/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:06:26,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:06:26,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:06:26,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:06:26,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:06:26,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:06:26,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:06:26,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:06:26,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:06:26,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:06:26,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:06:26,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:06:26,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:06:26,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:06:26,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:06:26,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:06:26,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:06:26,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:06:26,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:06:26,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:06:26,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:06:26,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:06:26,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:06:26,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:06:26,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:06:26,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:06:26,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:06:26,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:06:26,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:06:26,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:06:26,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:06:26,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:06:26,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:06:26,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:06:26,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:06:26,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:06:26,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:06:26,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:06:26,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:06:26,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:06:26,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:06:26,764 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:06:26,803 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:06:26,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:06:26,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:06:26,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:06:26,805 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:06:26,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:06:26,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:06:26,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:06:26,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:06:26,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:06:26,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:06:26,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:06:26,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:06:26,808 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:06:26,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:06:26,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:06:26,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:06:26,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:06:26,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:06:26,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:06:26,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:06:26,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:06:26,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:06:26,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:06:26,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:06:26,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:06:26,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:06:26,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:06:26,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:06:26,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:06:27,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:06:27,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:06:27,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:06:27,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:06:27,095 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:06:27,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-08-19 00:06:27,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5daa9b083/559a8ee4d4114819be8a3ec1f106c159/FLAG16afc9d1f [2020-08-19 00:06:27,639 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:06:27,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-08-19 00:06:27,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5daa9b083/559a8ee4d4114819be8a3ec1f106c159/FLAG16afc9d1f [2020-08-19 00:06:27,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5daa9b083/559a8ee4d4114819be8a3ec1f106c159 [2020-08-19 00:06:27,997 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:06:27,998 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:06:27,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:06:27,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:06:28,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:06:28,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:06:27" (1/1) ... [2020-08-19 00:06:28,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:28, skipping insertion in model container [2020-08-19 00:06:28,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:06:27" (1/1) ... [2020-08-19 00:06:28,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:06:28,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:06:28,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:06:28,490 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:06:28,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:06:28,598 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:06:28,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:28 WrapperNode [2020-08-19 00:06:28,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:06:28,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:06:28,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:06:28,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:06:28,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:28" (1/1) ... [2020-08-19 00:06:28,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:28" (1/1) ... [2020-08-19 00:06:28,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:28" (1/1) ... [2020-08-19 00:06:28,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:28" (1/1) ... [2020-08-19 00:06:28,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:28" (1/1) ... [2020-08-19 00:06:28,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:28" (1/1) ... [2020-08-19 00:06:28,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:28" (1/1) ... [2020-08-19 00:06:28,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:06:28,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:06:28,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:06:28,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:06:28,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:28" (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 [2020-08-19 00:06:28,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:06:28,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:06:28,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:06:28,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:06:28,788 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:06:28,788 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:06:28,788 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:06:28,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:06:28,789 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:06:28,791 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:06:28,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:06:28,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:06:28,791 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:06:28,791 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:06:28,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:06:28,792 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:06:28,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:06:28,792 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:06:28,792 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:06:28,792 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:06:28,792 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:06:28,792 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:06:28,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:06:28,793 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:06:28,793 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:06:28,793 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:06:28,793 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:06:28,793 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:06:28,793 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:06:28,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:06:28,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:06:28,794 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:06:28,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:06:28,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:06:28,794 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:06:28,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:06:28,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:06:28,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:06:28,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:06:28,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:06:28,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:06:28,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:06:28,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:06:28,796 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:06:28,796 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:06:28,796 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:06:28,796 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:06:28,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:06:28,796 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:06:28,797 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:06:28,797 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:06:28,797 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:06:28,797 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:06:28,797 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:06:28,797 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:06:28,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:06:28,798 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:06:28,798 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:06:28,798 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:06:28,798 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:06:28,798 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:06:28,798 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:06:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:06:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:06:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:06:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:06:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:06:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:06:28,800 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:06:28,800 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:06:28,800 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:06:28,800 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:06:28,800 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:06:28,800 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:06:28,800 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:06:28,801 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:06:28,801 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:06:28,801 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:06:28,801 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:06:28,801 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:06:28,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:06:28,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:06:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:06:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:06:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:06:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:06:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:06:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:06:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:06:28,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:06:28,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:06:28,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:06:28,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:06:28,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:06:28,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:06:28,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:06:29,924 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:06:29,924 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:06:29,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:06:29 BoogieIcfgContainer [2020-08-19 00:06:29,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:06:29,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:06:29,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:06:29,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:06:29,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:06:27" (1/3) ... [2020-08-19 00:06:29,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4deded06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:06:29, skipping insertion in model container [2020-08-19 00:06:29,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:28" (2/3) ... [2020-08-19 00:06:29,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4deded06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:06:29, skipping insertion in model container [2020-08-19 00:06:29,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:06:29" (3/3) ... [2020-08-19 00:06:29,942 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2020-08-19 00:06:29,952 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:06:29,961 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:06:29,971 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:06:29,994 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:06:29,994 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:06:29,995 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:06:29,995 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:06:29,995 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:06:29,995 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:06:29,996 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:06:29,996 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:06:30,017 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-08-19 00:06:30,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 00:06:30,027 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:30,028 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] [2020-08-19 00:06:30,028 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:30,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:30,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1040081704, now seen corresponding path program 1 times [2020-08-19 00:06:30,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:30,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657878778] [2020-08-19 00:06:30,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:30,693 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:30,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:30,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:30,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:30,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:30,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:30,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:06:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:30,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:06:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:30,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657878778] [2020-08-19 00:06:30,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:30,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:06:30,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144313833] [2020-08-19 00:06:30,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:06:30,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:30,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:06:30,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:06:30,810 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 3 states. [2020-08-19 00:06:31,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:31,881 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-08-19 00:06:31,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:06:31,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 00:06:31,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:31,897 INFO L225 Difference]: With dead ends: 306 [2020-08-19 00:06:31,897 INFO L226 Difference]: Without dead ends: 165 [2020-08-19 00:06:31,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:06:31,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-19 00:06:31,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-19 00:06:31,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-19 00:06:31,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-19 00:06:31,990 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-08-19 00:06:31,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:31,991 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-19 00:06:31,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:06:31,991 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-19 00:06:31,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 00:06:31,994 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:31,994 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] [2020-08-19 00:06:31,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:06:31,995 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:31,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:31,995 INFO L82 PathProgramCache]: Analyzing trace with hash -849158610, now seen corresponding path program 1 times [2020-08-19 00:06:31,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:31,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034670276] [2020-08-19 00:06:31,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:32,340 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:32,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:32,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:32,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:32,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:32,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:32,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:06:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:32,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:06:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:32,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034670276] [2020-08-19 00:06:32,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:32,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:06:32,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886805735] [2020-08-19 00:06:32,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:06:32,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:32,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:06:32,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:06:32,386 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-19 00:06:32,811 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:33,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:33,606 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-08-19 00:06:33,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:06:33,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 00:06:33,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:33,609 INFO L225 Difference]: With dead ends: 235 [2020-08-19 00:06:33,609 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 00:06:33,612 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 [2020-08-19 00:06:33,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 00:06:33,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-19 00:06:33,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 00:06:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-19 00:06:33,651 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-08-19 00:06:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:33,652 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-19 00:06:33,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:06:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-19 00:06:33,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:06:33,654 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:33,654 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] [2020-08-19 00:06:33,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:06:33,655 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:33,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:33,655 INFO L82 PathProgramCache]: Analyzing trace with hash 846018297, now seen corresponding path program 1 times [2020-08-19 00:06:33,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:33,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844083869] [2020-08-19 00:06:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:33,947 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:33,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:34,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:34,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:34,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:34,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:34,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:06:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:34,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:06:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:34,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844083869] [2020-08-19 00:06:34,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:34,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:06:34,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368454308] [2020-08-19 00:06:34,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:06:34,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:34,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:06:34,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:06:34,053 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-19 00:06:34,406 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:34,721 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:34,952 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:35,189 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:36,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:36,308 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-08-19 00:06:36,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 00:06:36,308 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-19 00:06:36,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:36,312 INFO L225 Difference]: With dead ends: 248 [2020-08-19 00:06:36,312 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 00:06:36,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:06:36,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 00:06:36,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-19 00:06:36,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 00:06:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-08-19 00:06:36,356 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-08-19 00:06:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:36,357 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-08-19 00:06:36,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:06:36,357 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-08-19 00:06:36,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 00:06:36,359 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:36,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:06:36,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:06:36,359 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:36,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:36,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1478840967, now seen corresponding path program 1 times [2020-08-19 00:06:36,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:36,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289501640] [2020-08-19 00:06:36,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:36,622 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:36,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:36,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:36,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:36,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:36,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:36,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:06:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:36,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:36,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:36,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 00:06:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:36,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 00:06:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:36,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289501640] [2020-08-19 00:06:36,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:36,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 00:06:36,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182127477] [2020-08-19 00:06:36,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:06:36,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:36,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:06:36,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:06:36,706 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-08-19 00:06:36,996 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:38,040 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:38,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:38,690 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-08-19 00:06:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:06:38,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-19 00:06:38,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:38,695 INFO L225 Difference]: With dead ends: 345 [2020-08-19 00:06:38,695 INFO L226 Difference]: Without dead ends: 246 [2020-08-19 00:06:38,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:06:38,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-19 00:06:38,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-08-19 00:06:38,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-19 00:06:38,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-08-19 00:06:38,741 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-08-19 00:06:38,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:38,742 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-08-19 00:06:38,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:06:38,742 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-08-19 00:06:38,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 00:06:38,744 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:38,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:06:38,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:06:38,744 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:38,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:38,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1284194314, now seen corresponding path program 1 times [2020-08-19 00:06:38,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:38,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228334489] [2020-08-19 00:06:38,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:39,001 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:39,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:39,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:39,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:39,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:39,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:39,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:06:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:39,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:39,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:39,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:06:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:39,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:06:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:39,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 00:06:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:39,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 00:06:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:39,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228334489] [2020-08-19 00:06:39,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:39,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:06:39,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016537886] [2020-08-19 00:06:39,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:06:39,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:39,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:06:39,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:06:39,147 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 8 states. [2020-08-19 00:06:39,539 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:40,601 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:40,856 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:41,115 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:41,324 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:41,594 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:42,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:42,577 INFO L93 Difference]: Finished difference Result 607 states and 746 transitions. [2020-08-19 00:06:42,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:06:42,582 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-19 00:06:42,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:42,586 INFO L225 Difference]: With dead ends: 607 [2020-08-19 00:06:42,586 INFO L226 Difference]: Without dead ends: 428 [2020-08-19 00:06:42,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:06:42,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-08-19 00:06:42,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 361. [2020-08-19 00:06:42,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-19 00:06:42,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 410 transitions. [2020-08-19 00:06:42,671 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 410 transitions. Word has length 79 [2020-08-19 00:06:42,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:42,672 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 410 transitions. [2020-08-19 00:06:42,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:06:42,672 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 410 transitions. [2020-08-19 00:06:42,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 00:06:42,674 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:42,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:06:42,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:06:42,674 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:42,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:42,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1377771002, now seen corresponding path program 1 times [2020-08-19 00:06:42,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:42,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413624660] [2020-08-19 00:06:42,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,921 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:42,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:06:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:06:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:06:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:06:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 00:06:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 00:06:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:43,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:43,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413624660] [2020-08-19 00:06:43,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:43,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:06:43,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025288343] [2020-08-19 00:06:43,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:06:43,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:43,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:06:43,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:06:43,019 INFO L87 Difference]: Start difference. First operand 361 states and 410 transitions. Second operand 9 states. [2020-08-19 00:06:43,403 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:44,422 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:44,628 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:44,884 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:45,142 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:45,381 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:46,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:46,366 INFO L93 Difference]: Finished difference Result 470 states and 590 transitions. [2020-08-19 00:06:46,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 00:06:46,367 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 00:06:46,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:46,372 INFO L225 Difference]: With dead ends: 470 [2020-08-19 00:06:46,372 INFO L226 Difference]: Without dead ends: 467 [2020-08-19 00:06:46,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:06:46,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-08-19 00:06:46,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 361. [2020-08-19 00:06:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-19 00:06:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 409 transitions. [2020-08-19 00:06:46,441 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 409 transitions. Word has length 83 [2020-08-19 00:06:46,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:46,441 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 409 transitions. [2020-08-19 00:06:46,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:06:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 409 transitions. [2020-08-19 00:06:46,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:06:46,443 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:46,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:06:46,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:06:46,444 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:46,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:46,444 INFO L82 PathProgramCache]: Analyzing trace with hash 453090503, now seen corresponding path program 1 times [2020-08-19 00:06:46,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:46,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119751113] [2020-08-19 00:06:46,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:46,706 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:46,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:46,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:46,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:46,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:06:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:46,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:06:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:46,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:46,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:46,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:06:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:46,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:06:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:46,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 00:06:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:46,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 00:06:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:46,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119751113] [2020-08-19 00:06:46,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:46,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:06:46,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367024689] [2020-08-19 00:06:46,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:06:46,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:46,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:06:46,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:06:46,870 INFO L87 Difference]: Start difference. First operand 361 states and 409 transitions. Second operand 9 states. [2020-08-19 00:06:47,803 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:48,035 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:06:48,269 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:48,499 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:49,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:49,428 INFO L93 Difference]: Finished difference Result 808 states and 990 transitions. [2020-08-19 00:06:49,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:06:49,428 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-19 00:06:49,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:49,431 INFO L225 Difference]: With dead ends: 808 [2020-08-19 00:06:49,431 INFO L226 Difference]: Without dead ends: 471 [2020-08-19 00:06:49,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:06:49,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-19 00:06:49,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 371. [2020-08-19 00:06:49,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-08-19 00:06:49,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 419 transitions. [2020-08-19 00:06:49,499 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 419 transitions. Word has length 84 [2020-08-19 00:06:49,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:49,500 INFO L479 AbstractCegarLoop]: Abstraction has 371 states and 419 transitions. [2020-08-19 00:06:49,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:06:49,500 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 419 transitions. [2020-08-19 00:06:49,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:06:49,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:49,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:06:49,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:06:49,502 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:49,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:49,502 INFO L82 PathProgramCache]: Analyzing trace with hash 475722757, now seen corresponding path program 1 times [2020-08-19 00:06:49,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:49,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385675632] [2020-08-19 00:06:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:49,764 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:49,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:49,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:49,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:49,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:49,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:49,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:06:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:49,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:06:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:49,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:49,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:49,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:06:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:49,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:06:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:49,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 00:06:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:49,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 00:06:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:49,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385675632] [2020-08-19 00:06:49,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:49,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 00:06:49,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832531742] [2020-08-19 00:06:49,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:06:49,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:49,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:06:49,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:06:49,904 INFO L87 Difference]: Start difference. First operand 371 states and 419 transitions. Second operand 11 states. [2020-08-19 00:06:50,398 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:50,631 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:50,849 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:51,441 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:51,676 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:51,911 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:52,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:52,978 INFO L93 Difference]: Finished difference Result 832 states and 1030 transitions. [2020-08-19 00:06:52,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:06:52,981 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-19 00:06:52,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:52,984 INFO L225 Difference]: With dead ends: 832 [2020-08-19 00:06:52,985 INFO L226 Difference]: Without dead ends: 485 [2020-08-19 00:06:52,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:06:52,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-19 00:06:53,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 379. [2020-08-19 00:06:53,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-19 00:06:53,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 427 transitions. [2020-08-19 00:06:53,056 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 427 transitions. Word has length 84 [2020-08-19 00:06:53,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:53,056 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 427 transitions. [2020-08-19 00:06:53,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:06:53,056 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 427 transitions. [2020-08-19 00:06:53,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:06:53,058 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:53,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:06:53,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:06:53,058 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:53,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:53,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1501214756, now seen corresponding path program 1 times [2020-08-19 00:06:53,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:53,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571305492] [2020-08-19 00:06:53,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:53,292 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:53,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:53,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:53,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:53,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:53,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:53,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:06:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:53,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:06:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:53,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:53,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:53,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:06:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:53,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:06:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:53,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 00:06:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:53,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 00:06:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:53,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571305492] [2020-08-19 00:06:53,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:53,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:06:53,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375581358] [2020-08-19 00:06:53,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:06:53,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:53,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:06:53,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:06:53,407 INFO L87 Difference]: Start difference. First operand 379 states and 427 transitions. Second operand 7 states. [2020-08-19 00:06:53,891 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:54,352 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:56,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:56,394 INFO L93 Difference]: Finished difference Result 1174 states and 1504 transitions. [2020-08-19 00:06:56,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:06:56,395 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-19 00:06:56,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:56,403 INFO L225 Difference]: With dead ends: 1174 [2020-08-19 00:06:56,403 INFO L226 Difference]: Without dead ends: 819 [2020-08-19 00:06:56,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:06:56,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-08-19 00:06:56,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 699. [2020-08-19 00:06:56,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-08-19 00:06:56,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 821 transitions. [2020-08-19 00:06:56,615 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 821 transitions. Word has length 84 [2020-08-19 00:06:56,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:56,616 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 821 transitions. [2020-08-19 00:06:56,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:06:56,616 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 821 transitions. [2020-08-19 00:06:56,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:06:56,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:56,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:06:56,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:06:56,625 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:56,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:56,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1300385726, now seen corresponding path program 1 times [2020-08-19 00:06:56,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:56,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186313563] [2020-08-19 00:06:56,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:06:56,712 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:06:56,713 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:06:56,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:06:56,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:06:56 BoogieIcfgContainer [2020-08-19 00:06:56,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:06:56,775 INFO L168 Benchmark]: Toolchain (without parser) took 28773.65 ms. Allocated memory was 142.1 MB in the beginning and 601.4 MB in the end (delta: 459.3 MB). Free memory was 103.8 MB in the beginning and 274.2 MB in the end (delta: -170.3 MB). Peak memory consumption was 288.9 MB. Max. memory is 7.1 GB. [2020-08-19 00:06:56,777 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 00:06:56,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.22 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 103.6 MB in the beginning and 174.0 MB in the end (delta: -70.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-08-19 00:06:56,788 INFO L168 Benchmark]: Boogie Preprocessor took 115.27 ms. Allocated memory is still 205.5 MB. Free memory was 174.0 MB in the beginning and 169.1 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:06:56,789 INFO L168 Benchmark]: RCFGBuilder took 1218.01 ms. Allocated memory was 205.5 MB in the beginning and 233.3 MB in the end (delta: 27.8 MB). Free memory was 169.1 MB in the beginning and 189.5 MB in the end (delta: -20.4 MB). Peak memory consumption was 78.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:06:56,790 INFO L168 Benchmark]: TraceAbstraction took 26835.43 ms. Allocated memory was 233.3 MB in the beginning and 601.4 MB in the end (delta: 368.1 MB). Free memory was 188.1 MB in the beginning and 274.2 MB in the end (delta: -86.0 MB). Peak memory consumption was 282.0 MB. Max. memory is 7.1 GB. [2020-08-19 00:06:56,795 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 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 600.22 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 103.6 MB in the beginning and 174.0 MB in the end (delta: -70.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.27 ms. Allocated memory is still 205.5 MB. Free memory was 174.0 MB in the beginning and 169.1 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1218.01 ms. Allocated memory was 205.5 MB in the beginning and 233.3 MB in the end (delta: 27.8 MB). Free memory was 169.1 MB in the beginning and 189.5 MB in the end (delta: -20.4 MB). Peak memory consumption was 78.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26835.43 ms. Allocated memory was 233.3 MB in the beginning and 601.4 MB in the end (delta: 368.1 MB). Free memory was 188.1 MB in the beginning and 274.2 MB in the end (delta: -86.0 MB). Peak memory consumption was 282.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 388]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L76] int waterLevel = 1; [L77] int methaneLevelCritical = 0; [L179] int cleanupTimeShifts = 4; [L395] int pumpRunning = 0; [L396] int systemActive = 1; [L769] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L258] int retValue_acc ; [L259] int tmp ; [L263] FCALL select_helpers() [L264] FCALL select_features() [L265] CALL, EXPR valid_product() [L307] int retValue_acc ; [L310] retValue_acc = 1 [L311] return (retValue_acc); [L265] RET, EXPR valid_product() [L265] tmp = valid_product() [L267] COND TRUE \read(tmp) [L269] FCALL setup() [L270] CALL runTest() [L249] CALL test() [L318] int splverifierCounter ; [L319] int tmp ; [L320] int tmp___0 ; [L321] int tmp___1 ; [L322] int tmp___2 ; [L325] splverifierCounter = 0 [L327] COND TRUE 1 [L329] COND TRUE splverifierCounter < 4 [L335] tmp = __VERIFIER_nondet_int() [L337] COND TRUE \read(tmp) [L339] CALL waterRise() [L94] COND TRUE waterLevel < 2 [L95] waterLevel = waterLevel + 1 [L339] RET waterRise() [L345] tmp___0 = __VERIFIER_nondet_int() [L347] COND TRUE \read(tmp___0) [L349] CALL changeMethaneLevel() [L106] COND FALSE !(\read(methaneLevelCritical)) [L109] methaneLevelCritical = 1 [L349] RET changeMethaneLevel() [L355] tmp___2 = __VERIFIER_nondet_int() [L357] COND FALSE !(\read(tmp___2)) [L363] tmp___1 = __VERIFIER_nondet_int() [L365] COND TRUE \read(tmp___1) [L372] CALL timeShift() [L402] COND FALSE !(\read(pumpRunning)) [L409] COND TRUE \read(systemActive) [L411] CALL processEnvironment() [L457] int tmp ; [L460] COND FALSE !(\read(pumpRunning)) [L475] CALL processEnvironment__wrappee__highWaterSensor() [L431] int tmp ; [L434] COND TRUE ! pumpRunning [L436] CALL, EXPR isHighWaterLevel() [L554] int retValue_acc ; [L555] int tmp ; [L556] int tmp___0 ; [L560] CALL, EXPR isHighWaterSensorDry() [L156] int retValue_acc ; [L159] COND FALSE !(waterLevel < 2) [L163] retValue_acc = 0 [L164] return (retValue_acc); [L560] RET, EXPR isHighWaterSensorDry() [L560] tmp = isHighWaterSensorDry() [L562] COND FALSE !(\read(tmp)) [L565] tmp___0 = 1 [L567] retValue_acc = tmp___0 [L568] return (retValue_acc); [L436] RET, EXPR isHighWaterLevel() [L436] tmp = isHighWaterLevel() [L438] COND TRUE \read(tmp) [L440] CALL activatePump() [L485] pumpRunning = 1 [L440] RET activatePump() [L475] RET processEnvironment__wrappee__highWaterSensor() [L411] RET processEnvironment() [L417] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L115] int retValue_acc ; [L118] retValue_acc = methaneLevelCritical [L119] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L509] int retValue_acc ; [L512] retValue_acc = pumpRunning [L513] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L388] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 239 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1082 SDtfs, 1822 SDslu, 979 SDs, 0 SdLazy, 5106 SolverSat, 1184 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 222 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=699occurred 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: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 627 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 615 ConstructedInterpolants, 0 QuantifiedInterpolants, 190976 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...