/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --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_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:49:00,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:49:00,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:49:00,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:49:00,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:49:00,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:49:00,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:49:00,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:49:00,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:49:00,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:49:00,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:49:00,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:49:00,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:49:00,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:49:00,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:49:00,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:49:00,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:49:00,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:49:00,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:49:00,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:49:00,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:49:00,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:49:00,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:49:00,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:49:00,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:49:00,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:49:00,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:49:00,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:49:00,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:49:00,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:49:00,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:49:00,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:49:00,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:49:00,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:49:00,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:49:00,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:49:00,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:49:00,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:49:00,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:49:00,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:49:00,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:49:00,742 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 18:49:00,787 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:49:00,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:49:00,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:49:00,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:49:00,790 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:49:00,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:49:00,790 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:49:00,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:49:00,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:49:00,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:49:00,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:49:00,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:49:00,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:49:00,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:49:00,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:49:00,793 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:49:00,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:49:00,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:49:00,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:49:00,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:49:00,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:49:00,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:49:00,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:49:00,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:49:00,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:49:00,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:49:00,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:49:00,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:49:00,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:49:00,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:49:01,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:49:01,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:49:01,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:49:01,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:49:01,087 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:49:01,088 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2020-08-21 18:49:01,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6131acdf/2d9884f7b3a7464682c12a7a45a0d519/FLAG77380708b [2020-08-21 18:49:01,726 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:49:01,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2020-08-21 18:49:01,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6131acdf/2d9884f7b3a7464682c12a7a45a0d519/FLAG77380708b [2020-08-21 18:49:02,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6131acdf/2d9884f7b3a7464682c12a7a45a0d519 [2020-08-21 18:49:02,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:49:02,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:49:02,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:49:02,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:49:02,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:49:02,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:49:02" (1/1) ... [2020-08-21 18:49:02,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217e3fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:02, skipping insertion in model container [2020-08-21 18:49:02,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:49:02" (1/1) ... [2020-08-21 18:49:02,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:49:02,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:49:02,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:49:02,520 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:49:02,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:49:02,718 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:49:02,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:02 WrapperNode [2020-08-21 18:49:02,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:49:02,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:49:02,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:49:02,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:49:02,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:02" (1/1) ... [2020-08-21 18:49:02,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:02" (1/1) ... [2020-08-21 18:49:02,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:02" (1/1) ... [2020-08-21 18:49:02,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:02" (1/1) ... [2020-08-21 18:49:02,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:02" (1/1) ... [2020-08-21 18:49:02,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:02" (1/1) ... [2020-08-21 18:49:02,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:02" (1/1) ... [2020-08-21 18:49:02,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:49:02,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:49:02,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:49:02,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:49:02,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:02" (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 18:49:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:49:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:49:02,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:49:02,904 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:49:02,904 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:49:02,904 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 18:49:02,904 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:49:02,904 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:49:02,904 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:49:02,905 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:49:02,905 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:49:02,906 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:49:02,906 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 18:49:02,906 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 18:49:02,906 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 18:49:02,907 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:49:02,907 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:49:02,907 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:49:02,907 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:49:02,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:49:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:49:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:49:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:49:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:49:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:49:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:49:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:49:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:49:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:49:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:49:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:49:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:49:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:49:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:49:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:49:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:49:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:49:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 18:49:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 18:49:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:49:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:49:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:49:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:49:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:49:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 18:49:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 18:49:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:49:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:49:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:49:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:49:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:49:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:49:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 18:49:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:49:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:49:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:49:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:49:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 18:49:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:49:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 18:49:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 18:49:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:49:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:49:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:49:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:49:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:49:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:49:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:49:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:49:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:49:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:49:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:49:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:49:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:49:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:49:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:49:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:49:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:49:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:49:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:49:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:49:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:49:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:49:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:49:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:49:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:49:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:49:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:49:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:49:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:49:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:49:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:49:04,000 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:49:04,001 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:49:04,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:49:04 BoogieIcfgContainer [2020-08-21 18:49:04,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:49:04,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:49:04,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:49:04,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:49:04,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:49:02" (1/3) ... [2020-08-21 18:49:04,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d0e018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:49:04, skipping insertion in model container [2020-08-21 18:49:04,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:49:02" (2/3) ... [2020-08-21 18:49:04,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d0e018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:49:04, skipping insertion in model container [2020-08-21 18:49:04,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:49:04" (3/3) ... [2020-08-21 18:49:04,015 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product36.cil.c [2020-08-21 18:49:04,025 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:49:04,033 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:49:04,047 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:49:04,071 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:49:04,071 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:49:04,071 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:49:04,072 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:49:04,072 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:49:04,072 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:49:04,072 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:49:04,072 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:49:04,092 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-08-21 18:49:04,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 18:49:04,102 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:49:04,103 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 18:49:04,104 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:49:04,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:49:04,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1806854140, now seen corresponding path program 1 times [2020-08-21 18:49:04,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:49:04,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443812569] [2020-08-21 18:49:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:49:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:04,753 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:49:04,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:49:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:04,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:49:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:49:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:04,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:49:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:04,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:49:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:04,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:49:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:04,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:49:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:04,838 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 18:49:04,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443812569] [2020-08-21 18:49:04,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:49:04,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 18:49:04,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910141930] [2020-08-21 18:49:04,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 18:49:04,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:49:04,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 18:49:04,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:49:04,872 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 3 states. [2020-08-21 18:49:05,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:49:05,899 INFO L93 Difference]: Finished difference Result 278 states and 364 transitions. [2020-08-21 18:49:05,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:49:05,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 18:49:05,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:49:05,915 INFO L225 Difference]: With dead ends: 278 [2020-08-21 18:49:05,916 INFO L226 Difference]: Without dead ends: 151 [2020-08-21 18:49:05,920 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 18:49:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-21 18:49:06,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 118. [2020-08-21 18:49:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 18:49:06,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-08-21 18:49:06,042 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 46 [2020-08-21 18:49:06,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:49:06,042 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-08-21 18:49:06,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 18:49:06,042 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-08-21 18:49:06,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 18:49:06,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:49:06,051 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 18:49:06,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:49:06,052 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:49:06,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:49:06,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1793827304, now seen corresponding path program 1 times [2020-08-21 18:49:06,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:49:06,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103961310] [2020-08-21 18:49:06,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:49:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:06,385 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:49:06,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:49:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:06,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:49:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:06,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:49:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:06,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:49:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:06,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:49:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:06,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:49:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:06,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:49:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:06,454 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 18:49:06,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103961310] [2020-08-21 18:49:06,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:49:06,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:49:06,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430141339] [2020-08-21 18:49:06,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:49:06,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:49:06,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:49:06,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:49:06,459 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 4 states. [2020-08-21 18:49:06,845 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:49:07,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:49:07,538 INFO L93 Difference]: Finished difference Result 198 states and 241 transitions. [2020-08-21 18:49:07,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:49:07,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 18:49:07,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:49:07,544 INFO L225 Difference]: With dead ends: 198 [2020-08-21 18:49:07,544 INFO L226 Difference]: Without dead ends: 135 [2020-08-21 18:49:07,546 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 18:49:07,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-21 18:49:07,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2020-08-21 18:49:07,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-21 18:49:07,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-08-21 18:49:07,580 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2020-08-21 18:49:07,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:49:07,581 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-08-21 18:49:07,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:49:07,581 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-08-21 18:49:07,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 18:49:07,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:49:07,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:49:07,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:49:07,584 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:49:07,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:49:07,584 INFO L82 PathProgramCache]: Analyzing trace with hash 25908157, now seen corresponding path program 1 times [2020-08-21 18:49:07,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:49:07,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593855773] [2020-08-21 18:49:07,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:49:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:07,891 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:49:07,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:49:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:07,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:49:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:07,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:49:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:07,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:49:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:07,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:49:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:07,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:49:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:07,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:49:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:07,967 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 18:49:07,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593855773] [2020-08-21 18:49:07,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:49:07,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:49:07,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796786126] [2020-08-21 18:49:07,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:49:07,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:49:07,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:49:07,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:49:07,969 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 8 states. [2020-08-21 18:49:08,363 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:49:08,678 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:49:08,936 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:49:09,197 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:49:09,956 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:49:11,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:49:11,463 INFO L93 Difference]: Finished difference Result 378 states and 466 transitions. [2020-08-21 18:49:11,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:49:11,463 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 18:49:11,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:49:11,469 INFO L225 Difference]: With dead ends: 378 [2020-08-21 18:49:11,469 INFO L226 Difference]: Without dead ends: 293 [2020-08-21 18:49:11,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:49:11,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-08-21 18:49:11,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 220. [2020-08-21 18:49:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-21 18:49:11,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 262 transitions. [2020-08-21 18:49:11,535 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 262 transitions. Word has length 52 [2020-08-21 18:49:11,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:49:11,535 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 262 transitions. [2020-08-21 18:49:11,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:49:11,535 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 262 transitions. [2020-08-21 18:49:11,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 18:49:11,538 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:49:11,538 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 18:49:11,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:49:11,538 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:49:11,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:49:11,539 INFO L82 PathProgramCache]: Analyzing trace with hash -388118307, now seen corresponding path program 1 times [2020-08-21 18:49:11,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:49:11,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40286218] [2020-08-21 18:49:11,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:49:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:11,862 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:49:11,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:49:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:11,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:49:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:11,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:49:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:11,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:49:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:11,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:49:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:11,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:49:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:11,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:49:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:11,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 18:49:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:11,972 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 18:49:11,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40286218] [2020-08-21 18:49:11,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:49:11,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 18:49:11,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635269509] [2020-08-21 18:49:11,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:49:11,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:49:11,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:49:11,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:49:11,975 INFO L87 Difference]: Start difference. First operand 220 states and 262 transitions. Second operand 12 states. [2020-08-21 18:49:12,457 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:49:12,803 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:49:13,063 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:49:13,312 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:49:13,893 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:49:14,712 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:49:15,068 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:49:15,358 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:49:15,684 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:49:15,951 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:49:16,323 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:49:16,605 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:49:16,851 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:49:18,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:49:18,376 INFO L93 Difference]: Finished difference Result 881 states and 1222 transitions. [2020-08-21 18:49:18,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 18:49:18,376 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-21 18:49:18,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:49:18,389 INFO L225 Difference]: With dead ends: 881 [2020-08-21 18:49:18,389 INFO L226 Difference]: Without dead ends: 685 [2020-08-21 18:49:18,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 18:49:18,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-08-21 18:49:18,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 592. [2020-08-21 18:49:18,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-21 18:49:18,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 744 transitions. [2020-08-21 18:49:18,567 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 744 transitions. Word has length 57 [2020-08-21 18:49:18,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:49:18,567 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 744 transitions. [2020-08-21 18:49:18,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:49:18,568 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 744 transitions. [2020-08-21 18:49:18,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 18:49:18,571 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:49:18,571 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 18:49:18,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:49:18,572 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:49:18,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:49:18,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1713773635, now seen corresponding path program 1 times [2020-08-21 18:49:18,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:49:18,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952935449] [2020-08-21 18:49:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:49:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:18,892 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:49:18,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:49:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:18,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:49:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:18,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:49:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:18,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:49:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:18,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:49:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:18,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:49:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:18,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:49:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:18,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:49:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:18,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 18:49:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:18,999 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 18:49:19,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952935449] [2020-08-21 18:49:19,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:49:19,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:49:19,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662098840] [2020-08-21 18:49:19,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:49:19,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:49:19,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:49:19,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:49:19,002 INFO L87 Difference]: Start difference. First operand 592 states and 744 transitions. Second operand 6 states. [2020-08-21 18:49:19,338 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:49:20,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:49:20,938 INFO L93 Difference]: Finished difference Result 1481 states and 1983 transitions. [2020-08-21 18:49:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 18:49:20,945 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-21 18:49:20,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:49:20,952 INFO L225 Difference]: With dead ends: 1481 [2020-08-21 18:49:20,952 INFO L226 Difference]: Without dead ends: 913 [2020-08-21 18:49:20,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:49:20,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-21 18:49:21,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 846. [2020-08-21 18:49:21,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-08-21 18:49:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1064 transitions. [2020-08-21 18:49:21,165 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1064 transitions. Word has length 61 [2020-08-21 18:49:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:49:21,165 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 1064 transitions. [2020-08-21 18:49:21,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:49:21,166 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1064 transitions. [2020-08-21 18:49:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 18:49:21,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:49:21,173 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] [2020-08-21 18:49:21,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:49:21,173 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:49:21,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:49:21,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1637256011, now seen corresponding path program 1 times [2020-08-21 18:49:21,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:49:21,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132266798] [2020-08-21 18:49:21,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:49:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:21,493 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:49:21,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:49:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:21,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:49:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:21,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:49:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:21,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:49:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:21,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:49:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:21,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:49:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:21,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:49:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:21,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 18:49:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:21,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:21,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:49:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:21,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:49:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:21,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 18:49:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:21,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:49:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 18:49:21,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132266798] [2020-08-21 18:49:21,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:49:21,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 18:49:21,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362523777] [2020-08-21 18:49:21,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:49:21,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:49:21,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:49:21,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:49:21,678 INFO L87 Difference]: Start difference. First operand 846 states and 1064 transitions. Second operand 10 states. [2020-08-21 18:49:22,402 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-21 18:49:22,975 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:49:24,668 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:49:26,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:49:26,137 INFO L93 Difference]: Finished difference Result 1633 states and 2139 transitions. [2020-08-21 18:49:26,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 18:49:26,138 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-21 18:49:26,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:49:26,148 INFO L225 Difference]: With dead ends: 1633 [2020-08-21 18:49:26,148 INFO L226 Difference]: Without dead ends: 1048 [2020-08-21 18:49:26,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-21 18:49:26,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-08-21 18:49:26,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 953. [2020-08-21 18:49:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-21 18:49:26,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1176 transitions. [2020-08-21 18:49:26,353 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1176 transitions. Word has length 89 [2020-08-21 18:49:26,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:49:26,354 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1176 transitions. [2020-08-21 18:49:26,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:49:26,354 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1176 transitions. [2020-08-21 18:49:26,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-21 18:49:26,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:49:26,360 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] [2020-08-21 18:49:26,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:49:26,361 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:49:26,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:49:26,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1243870907, now seen corresponding path program 1 times [2020-08-21 18:49:26,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:49:26,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791645358] [2020-08-21 18:49:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:49:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,619 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:49:26,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:49:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:49:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:49:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:49:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:49:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:49:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:49:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:49:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 18:49:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:49:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 18:49:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 18:49:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 18:49:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 18:49:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 18:49:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 18:49:26,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791645358] [2020-08-21 18:49:26,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:49:26,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 18:49:26,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329174798] [2020-08-21 18:49:26,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:49:26,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:49:26,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:49:26,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:49:26,816 INFO L87 Difference]: Start difference. First operand 953 states and 1176 transitions. Second operand 12 states. [2020-08-21 18:49:27,495 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:49:27,728 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:49:27,964 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:49:28,615 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:49:28,858 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:49:29,092 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:49:30,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:49:30,045 INFO L93 Difference]: Finished difference Result 1984 states and 2566 transitions. [2020-08-21 18:49:30,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:49:30,045 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-08-21 18:49:30,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:49:30,058 INFO L225 Difference]: With dead ends: 1984 [2020-08-21 18:49:30,058 INFO L226 Difference]: Without dead ends: 1055 [2020-08-21 18:49:30,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 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 18:49:30,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-08-21 18:49:30,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 953. [2020-08-21 18:49:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-21 18:49:30,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1172 transitions. [2020-08-21 18:49:30,297 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1172 transitions. Word has length 115 [2020-08-21 18:49:30,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:49:30,297 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1172 transitions. [2020-08-21 18:49:30,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:49:30,298 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1172 transitions. [2020-08-21 18:49:30,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-21 18:49:30,302 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:49:30,302 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] [2020-08-21 18:49:30,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:49:30,302 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:49:30,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:49:30,303 INFO L82 PathProgramCache]: Analyzing trace with hash 289930749, now seen corresponding path program 1 times [2020-08-21 18:49:30,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:49:30,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793690790] [2020-08-21 18:49:30,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:49:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,548 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:49:30,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:49:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:49:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:49:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:49:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:49:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:49:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:49:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:49:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 18:49:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:49:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 18:49:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 18:49:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 18:49:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 18:49:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 18:49:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 18:49:30,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793690790] [2020-08-21 18:49:30,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:49:30,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 18:49:30,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201757231] [2020-08-21 18:49:30,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:49:30,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:49:30,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:49:30,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:49:30,742 INFO L87 Difference]: Start difference. First operand 953 states and 1172 transitions. Second operand 10 states. [2020-08-21 18:49:31,963 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:49:32,256 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:49:32,543 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:49:32,768 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:49:33,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:49:33,443 INFO L93 Difference]: Finished difference Result 1803 states and 2279 transitions. [2020-08-21 18:49:33,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:49:33,444 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2020-08-21 18:49:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:49:33,449 INFO L225 Difference]: With dead ends: 1803 [2020-08-21 18:49:33,449 INFO L226 Difference]: Without dead ends: 874 [2020-08-21 18:49:33,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:49:33,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-08-21 18:49:33,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 822. [2020-08-21 18:49:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-08-21 18:49:33,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 993 transitions. [2020-08-21 18:49:33,630 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 993 transitions. Word has length 115 [2020-08-21 18:49:33,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:49:33,631 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 993 transitions. [2020-08-21 18:49:33,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:49:33,631 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 993 transitions. [2020-08-21 18:49:33,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-21 18:49:33,635 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:49:33,635 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] [2020-08-21 18:49:33,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:49:33,636 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:49:33,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:49:33,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1415201690, now seen corresponding path program 1 times [2020-08-21 18:49:33,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:49:33,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441589478] [2020-08-21 18:49:33,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:49:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,032 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:49:34,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:49:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:49:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:49:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:49:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:49:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:49:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:49:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:49:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:49:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 18:49:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:49:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 18:49:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 18:49:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 18:49:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 18:49:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:49:34,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441589478] [2020-08-21 18:49:34,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:49:34,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 18:49:34,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014954175] [2020-08-21 18:49:34,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:49:34,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:49:34,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:49:34,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:49:34,208 INFO L87 Difference]: Start difference. First operand 822 states and 993 transitions. Second operand 12 states. [2020-08-21 18:49:35,109 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:49:35,927 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:49:36,218 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:49:36,451 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:49:36,688 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:49:36,910 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:49:37,249 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:49:37,849 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:49:38,108 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:49:38,378 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:49:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:49:39,906 INFO L93 Difference]: Finished difference Result 2004 states and 2576 transitions. [2020-08-21 18:49:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 18:49:39,906 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-08-21 18:49:39,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:49:39,915 INFO L225 Difference]: With dead ends: 2004 [2020-08-21 18:49:39,916 INFO L226 Difference]: Without dead ends: 1355 [2020-08-21 18:49:39,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-21 18:49:39,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2020-08-21 18:49:40,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1183. [2020-08-21 18:49:40,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2020-08-21 18:49:40,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1447 transitions. [2020-08-21 18:49:40,163 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1447 transitions. Word has length 115 [2020-08-21 18:49:40,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:49:40,165 INFO L479 AbstractCegarLoop]: Abstraction has 1183 states and 1447 transitions. [2020-08-21 18:49:40,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:49:40,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1447 transitions. [2020-08-21 18:49:40,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-21 18:49:40,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:49:40,174 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:49:40,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:49:40,174 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:49:40,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:49:40,175 INFO L82 PathProgramCache]: Analyzing trace with hash -182454868, now seen corresponding path program 1 times [2020-08-21 18:49:40,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:49:40,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208388842] [2020-08-21 18:49:40,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:49:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,536 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:49:40,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:49:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:49:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:49:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:49:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:49:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:49:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:49:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:49:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:49:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 18:49:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:49:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 18:49:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:49:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:49:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:49:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:49:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 18:49:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 18:49:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-21 18:49:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 18:49:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:40,754 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-21 18:49:40,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208388842] [2020-08-21 18:49:40,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:49:40,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 18:49:40,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263456469] [2020-08-21 18:49:40,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 18:49:40,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:49:40,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 18:49:40,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:49:40,759 INFO L87 Difference]: Start difference. First operand 1183 states and 1447 transitions. Second operand 13 states. [2020-08-21 18:49:41,343 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:49:41,573 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:49:41,793 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:49:42,245 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:49:43,185 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:49:44,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:49:44,709 INFO L93 Difference]: Finished difference Result 2158 states and 2710 transitions. [2020-08-21 18:49:44,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 18:49:44,715 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 148 [2020-08-21 18:49:44,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:49:44,722 INFO L225 Difference]: With dead ends: 2158 [2020-08-21 18:49:44,722 INFO L226 Difference]: Without dead ends: 1199 [2020-08-21 18:49:44,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-08-21 18:49:44,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-08-21 18:49:44,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 877. [2020-08-21 18:49:44,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-08-21 18:49:44,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1022 transitions. [2020-08-21 18:49:44,932 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1022 transitions. Word has length 148 [2020-08-21 18:49:44,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:49:44,933 INFO L479 AbstractCegarLoop]: Abstraction has 877 states and 1022 transitions. [2020-08-21 18:49:44,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 18:49:44,933 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1022 transitions. [2020-08-21 18:49:44,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 18:49:44,936 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:49:44,936 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, 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] [2020-08-21 18:49:44,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:49:44,936 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:49:44,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:49:44,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1037640305, now seen corresponding path program 2 times [2020-08-21 18:49:44,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:49:44,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046284470] [2020-08-21 18:49:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:49:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,332 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:49:45,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:49:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:49:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:49:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:49:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:49:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:49:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:49:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:49:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:49:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 18:49:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:49:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 18:49:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:49:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:49:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:49:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:49:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 18:49:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 18:49:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-21 18:49:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:49:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 18:49:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 18:49:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:49:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 39 proven. 18 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-08-21 18:49:45,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046284470] [2020-08-21 18:49:45,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:49:45,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 18:49:45,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812236418] [2020-08-21 18:49:45,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 18:49:45,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:49:45,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 18:49:45,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:49:45,614 INFO L87 Difference]: Start difference. First operand 877 states and 1022 transitions. Second operand 14 states. [2020-08-21 18:49:46,203 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:49:46,876 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:49:47,424 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:49:47,731 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:49:47,999 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:49:48,290 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:49:48,618 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:49:48,878 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:49:50,236 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:49:50,496 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:49:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:49:51,493 INFO L93 Difference]: Finished difference Result 2124 states and 2708 transitions. [2020-08-21 18:49:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 18:49:51,493 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-21 18:49:51,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:49:51,501 INFO L225 Difference]: With dead ends: 2124 [2020-08-21 18:49:51,502 INFO L226 Difference]: Without dead ends: 1420 [2020-08-21 18:49:51,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 18:49:51,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2020-08-21 18:49:51,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 870. [2020-08-21 18:49:51,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2020-08-21 18:49:51,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1022 transitions. [2020-08-21 18:49:51,722 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1022 transitions. Word has length 155 [2020-08-21 18:49:51,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:49:51,723 INFO L479 AbstractCegarLoop]: Abstraction has 870 states and 1022 transitions. [2020-08-21 18:49:51,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 18:49:51,723 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1022 transitions. [2020-08-21 18:49:51,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 18:49:51,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:49:51,727 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, 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] [2020-08-21 18:49:51,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 18:49:51,728 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:49:51,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:49:51,729 INFO L82 PathProgramCache]: Analyzing trace with hash 59332245, now seen corresponding path program 3 times [2020-08-21 18:49:51,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:49:51,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46006377] [2020-08-21 18:49:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:49:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:49:51,801 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:49:51,802 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:49:51,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 18:49:51,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:49:51 BoogieIcfgContainer [2020-08-21 18:49:51,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:49:51,840 INFO L168 Benchmark]: Toolchain (without parser) took 49818.69 ms. Allocated memory was 140.0 MB in the beginning and 842.5 MB in the end (delta: 702.5 MB). Free memory was 101.4 MB in the beginning and 498.9 MB in the end (delta: -397.5 MB). Peak memory consumption was 305.1 MB. Max. memory is 7.1 GB. [2020-08-21 18:49:51,841 INFO L168 Benchmark]: CDTParser took 0.21 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 18:49:51,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.00 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.2 MB in the beginning and 173.4 MB in the end (delta: -72.2 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:49:51,842 INFO L168 Benchmark]: Boogie Preprocessor took 89.50 ms. Allocated memory is still 203.9 MB. Free memory was 173.4 MB in the beginning and 169.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 18:49:51,843 INFO L168 Benchmark]: RCFGBuilder took 1195.23 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 169.4 MB in the beginning and 200.6 MB in the end (delta: -31.2 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2020-08-21 18:49:51,843 INFO L168 Benchmark]: TraceAbstraction took 47831.47 ms. Allocated memory was 237.0 MB in the beginning and 842.5 MB in the end (delta: 605.6 MB). Free memory was 199.2 MB in the beginning and 498.9 MB in the end (delta: -299.7 MB). Peak memory consumption was 305.9 MB. Max. memory is 7.1 GB. [2020-08-21 18:49:51,846 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 698.00 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.2 MB in the beginning and 173.4 MB in the end (delta: -72.2 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.50 ms. Allocated memory is still 203.9 MB. Free memory was 173.4 MB in the beginning and 169.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1195.23 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 169.4 MB in the beginning and 200.6 MB in the end (delta: -31.2 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 47831.47 ms. Allocated memory was 237.0 MB in the beginning and 842.5 MB in the end (delta: 605.6 MB). Free memory was 199.2 MB in the beginning and 498.9 MB in the end (delta: -299.7 MB). Peak memory consumption was 305.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 437]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L299] int cleanupTimeShifts = 4; [L611] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L809] int waterLevel = 1; [L810] int methaneLevelCritical = 0; [L375] int retValue_acc ; [L376] int tmp ; [L380] FCALL select_helpers() [L381] FCALL select_features() [L382] CALL, EXPR valid_product() [L424] int retValue_acc ; [L427] retValue_acc = 1 [L428] return (retValue_acc); [L382] RET, EXPR valid_product() [L382] tmp = valid_product() [L384] COND TRUE \read(tmp) [L386] FCALL setup() [L387] CALL runTest() [L366] CALL test() [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) [L68] CALL waterRise() [L827] COND TRUE waterLevel < 2 [L828] waterLevel = waterLevel + 1 [L68] RET waterRise() [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND FALSE !(\read(pumpRunning)) [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND TRUE ! pumpRunning [L165] CALL, EXPR isHighWaterLevel() [L257] int retValue_acc ; [L258] int tmp ; [L259] int tmp___0 ; [L263] CALL, EXPR isHighWaterSensorDry() [L889] int retValue_acc ; [L892] COND FALSE !(waterLevel < 2) [L896] retValue_acc = 0 [L897] return (retValue_acc); [L263] RET, EXPR isHighWaterSensorDry() [L263] tmp = isHighWaterSensorDry() [L265] COND FALSE !(\read(tmp)) [L268] tmp___0 = 1 [L270] retValue_acc = tmp___0 [L271] return (retValue_acc); [L165] RET, EXPR isHighWaterLevel() [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L169] CALL activatePump() [L188] pumpRunning = 1 [L169] RET activatePump() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L815] COND TRUE waterLevel > 0 [L816] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L815] COND TRUE waterLevel > 0 [L816] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND TRUE tmp == 0 [L913] CALL, EXPR isPumpRunning() [L212] int retValue_acc ; [L215] retValue_acc = pumpRunning [L216] return (retValue_acc); [L913] RET, EXPR isPumpRunning() [L913] tmp___0 = isPumpRunning() [L915] COND TRUE \read(tmp___0) [L917] CALL __automaton_fail() [L437] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 47.7s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 40.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1363 SDtfs, 3563 SDslu, 1919 SDs, 0 SdLazy, 9413 SolverSat, 2712 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 547 GetRequests, 348 SyntacticMatches, 11 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 17.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1183occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 1585 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1151 NumberOfCodeBlocks, 1151 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 989 ConstructedInterpolants, 0 QuantifiedInterpolants, 375157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 224/262 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...