/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:36:40,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:36:40,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:36:40,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:36:40,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:36:40,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:36:40,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:36:40,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:36:40,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:36:40,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:36:40,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:36:40,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:36:40,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:36:40,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:36:40,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:36:40,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:36:40,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:36:40,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:36:40,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:36:40,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:36:40,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:36:40,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:36:40,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:36:40,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:36:40,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:36:40,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:36:40,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:36:40,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:36:40,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:36:40,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:36:40,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:36:40,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:36:40,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:36:40,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:36:40,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:36:40,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:36:40,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:36:40,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:36:40,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:36:40,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:36:40,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:36:40,750 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 06:36:40,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:36:40,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:36:40,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:36:40,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:36:40,802 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:36:40,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:36:40,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:36:40,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:36:40,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:36:40,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:36:40,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:36:40,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:36:40,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:36:40,804 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:36:40,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:36:40,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:36:40,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:36:40,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:36:40,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:36:40,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:36:40,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:36:40,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:36:40,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:36:40,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:36:40,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:36:40,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:36:40,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:36:40,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:36:40,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:36:40,812 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=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:36:41,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:36:41,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:36:41,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:36:41,187 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:36:41,187 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:36:41,188 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2020-08-19 06:36:41,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c49e306de/34945dd894784030833fef948649bdd9/FLAG632d7d65a [2020-08-19 06:36:41,762 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:36:41,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2020-08-19 06:36:41,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c49e306de/34945dd894784030833fef948649bdd9/FLAG632d7d65a [2020-08-19 06:36:42,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c49e306de/34945dd894784030833fef948649bdd9 [2020-08-19 06:36:42,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:36:42,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:36:42,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:36:42,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:36:42,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:36:42,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:36:42" (1/1) ... [2020-08-19 06:36:42,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4147517c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:42, skipping insertion in model container [2020-08-19 06:36:42,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:36:42" (1/1) ... [2020-08-19 06:36:42,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:36:42,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:36:42,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:36:42,641 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:36:42,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:36:42,788 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:36:42,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:42 WrapperNode [2020-08-19 06:36:42,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:36:42,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:36:42,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:36:42,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:36:42,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:42" (1/1) ... [2020-08-19 06:36:42,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:42" (1/1) ... [2020-08-19 06:36:42,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:42" (1/1) ... [2020-08-19 06:36:42,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:42" (1/1) ... [2020-08-19 06:36:42,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:42" (1/1) ... [2020-08-19 06:36:42,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:42" (1/1) ... [2020-08-19 06:36:42,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:42" (1/1) ... [2020-08-19 06:36:42,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:36:42,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:36:42,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:36:42,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:36:42,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:42" (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 06:36:42,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:36:42,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:36:42,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 06:36:42,963 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 06:36:42,963 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 06:36:42,963 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 06:36:42,964 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 06:36:42,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:36:42,964 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 06:36:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 06:36:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 06:36:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 06:36:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 06:36:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 06:36:42,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 06:36:42,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 06:36:42,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 06:36:42,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 06:36:42,967 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 06:36:42,967 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 06:36:42,968 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 06:36:42,968 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 06:36:42,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 06:36:42,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 06:36:42,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 06:36:42,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 06:36:42,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 06:36:42,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 06:36:42,971 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 06:36:42,971 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 06:36:42,971 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 06:36:42,971 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 06:36:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 06:36:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 06:36:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 06:36:42,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 06:36:42,973 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 06:36:42,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 06:36:42,973 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 06:36:42,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:36:42,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:36:42,973 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 06:36:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 06:36:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 06:36:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 06:36:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 06:36:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 06:36:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 06:36:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 06:36:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 06:36:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 06:36:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 06:36:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 06:36:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 06:36:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 06:36:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:36:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 06:36:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 06:36:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 06:36:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 06:36:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 06:36:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:36:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 06:36:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 06:36:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 06:36:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 06:36:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 06:36:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:36:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:36:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 06:36:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:36:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:36:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:36:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:36:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 06:36:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:36:42,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 06:36:42,978 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 06:36:42,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:36:42,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 06:36:42,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 06:36:42,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 06:36:42,979 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 06:36:42,979 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 06:36:42,979 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 06:36:42,979 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 06:36:42,979 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 06:36:42,979 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 06:36:42,980 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 06:36:42,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:36:42,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:36:42,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:36:43,977 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:36:43,977 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:36:43,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:36:43 BoogieIcfgContainer [2020-08-19 06:36:43,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:36:43,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:36:43,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:36:43,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:36:43,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:36:42" (1/3) ... [2020-08-19 06:36:43,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f13e0ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:36:43, skipping insertion in model container [2020-08-19 06:36:43,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:42" (2/3) ... [2020-08-19 06:36:43,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f13e0ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:36:43, skipping insertion in model container [2020-08-19 06:36:43,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:36:43" (3/3) ... [2020-08-19 06:36:43,992 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product34.cil.c [2020-08-19 06:36:44,004 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:36:44,013 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:36:44,028 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:36:44,054 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:36:44,055 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:36:44,055 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:36:44,055 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:36:44,055 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:36:44,056 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:36:44,056 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:36:44,056 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:36:44,079 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-19 06:36:44,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 06:36:44,097 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:36:44,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:36:44,099 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:36:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:36:44,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1720198034, now seen corresponding path program 1 times [2020-08-19 06:36:44,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:36:44,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83525836] [2020-08-19 06:36:44,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:36:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:44,809 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:36:44,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:36:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:44,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:36:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:44,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:36:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:44,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:36:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:44,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:36:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:44,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:36:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:44,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 06:36:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:44,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 06:36:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:44,905 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 06:36:44,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83525836] [2020-08-19 06:36:44,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:36:44,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:36:44,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647600843] [2020-08-19 06:36:44,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:36:44,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:36:44,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:36:44,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:36:44,933 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 4 states. [2020-08-19 06:36:45,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:36:45,905 INFO L93 Difference]: Finished difference Result 258 states and 340 transitions. [2020-08-19 06:36:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:36:45,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 06:36:45,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:36:45,924 INFO L225 Difference]: With dead ends: 258 [2020-08-19 06:36:45,924 INFO L226 Difference]: Without dead ends: 145 [2020-08-19 06:36:45,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:36:45,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-19 06:36:46,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 114. [2020-08-19 06:36:46,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 06:36:46,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-19 06:36:46,032 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 51 [2020-08-19 06:36:46,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:36:46,033 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-19 06:36:46,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:36:46,033 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-19 06:36:46,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 06:36:46,039 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:36:46,039 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 06:36:46,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:36:46,040 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:36:46,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:36:46,040 INFO L82 PathProgramCache]: Analyzing trace with hash 220132220, now seen corresponding path program 1 times [2020-08-19 06:36:46,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:36:46,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350650361] [2020-08-19 06:36:46,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:36:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:46,368 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:36:46,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:36:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:46,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:36:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:46,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:36:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:46,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:36:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:46,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:36:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:46,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:36:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:46,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 06:36:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:46,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:36:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:46,448 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 06:36:46,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350650361] [2020-08-19 06:36:46,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:36:46,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:36:46,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942172552] [2020-08-19 06:36:46,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:36:46,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:36:46,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:36:46,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:36:46,454 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 5 states. [2020-08-19 06:36:46,876 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:36:47,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:36:47,624 INFO L93 Difference]: Finished difference Result 199 states and 247 transitions. [2020-08-19 06:36:47,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:36:47,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 06:36:47,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:36:47,629 INFO L225 Difference]: With dead ends: 199 [2020-08-19 06:36:47,629 INFO L226 Difference]: Without dead ends: 135 [2020-08-19 06:36:47,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:36:47,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-19 06:36:47,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-19 06:36:47,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-19 06:36:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-08-19 06:36:47,666 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 52 [2020-08-19 06:36:47,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:36:47,666 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-08-19 06:36:47,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:36:47,667 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-08-19 06:36:47,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 06:36:47,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:36:47,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:36:47,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:36:47,673 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:36:47,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:36:47,674 INFO L82 PathProgramCache]: Analyzing trace with hash 889380391, now seen corresponding path program 1 times [2020-08-19 06:36:47,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:36:47,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500295462] [2020-08-19 06:36:47,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:36:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:48,076 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:36:48,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:36:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:48,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:36:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:48,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:36:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:48,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:36:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:48,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:36:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:48,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:36:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:48,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 06:36:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:48,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:36:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:48,214 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 06:36:48,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500295462] [2020-08-19 06:36:48,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:36:48,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:36:48,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656671084] [2020-08-19 06:36:48,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:36:48,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:36:48,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:36:48,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:36:48,222 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 9 states. [2020-08-19 06:36:48,603 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:36:48,906 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:36:49,183 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:36:49,409 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:36:50,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:36:50,424 INFO L93 Difference]: Finished difference Result 212 states and 266 transitions. [2020-08-19 06:36:50,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 06:36:50,427 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 06:36:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:36:50,429 INFO L225 Difference]: With dead ends: 212 [2020-08-19 06:36:50,429 INFO L226 Difference]: Without dead ends: 135 [2020-08-19 06:36:50,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:36:50,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-19 06:36:50,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-19 06:36:50,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-19 06:36:50,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2020-08-19 06:36:50,486 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 57 [2020-08-19 06:36:50,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:36:50,488 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2020-08-19 06:36:50,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:36:50,488 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2020-08-19 06:36:50,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 06:36:50,498 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:36:50,498 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 06:36:50,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:36:50,498 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:36:50,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:36:50,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1390934310, now seen corresponding path program 1 times [2020-08-19 06:36:50,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:36:50,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973398163] [2020-08-19 06:36:50,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:36:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:50,802 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:36:50,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:36:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:50,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:36:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:50,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:36:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:50,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:36:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:50,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:36:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:50,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:36:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:50,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 06:36:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:50,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:36:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:50,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:36:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:50,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 06:36:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:50,895 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 06:36:50,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973398163] [2020-08-19 06:36:50,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:36:50,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 06:36:50,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860983891] [2020-08-19 06:36:50,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 06:36:50,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:36:50,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 06:36:50,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:36:50,898 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 7 states. [2020-08-19 06:36:51,276 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:36:52,544 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:36:53,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:36:53,036 INFO L93 Difference]: Finished difference Result 302 states and 382 transitions. [2020-08-19 06:36:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:36:53,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-08-19 06:36:53,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:36:53,041 INFO L225 Difference]: With dead ends: 302 [2020-08-19 06:36:53,041 INFO L226 Difference]: Without dead ends: 225 [2020-08-19 06:36:53,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:36:53,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-19 06:36:53,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 176. [2020-08-19 06:36:53,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-19 06:36:53,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 203 transitions. [2020-08-19 06:36:53,097 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 203 transitions. Word has length 65 [2020-08-19 06:36:53,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:36:53,098 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 203 transitions. [2020-08-19 06:36:53,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 06:36:53,098 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 203 transitions. [2020-08-19 06:36:53,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 06:36:53,100 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:36:53,100 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 06:36:53,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:36:53,100 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:36:53,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:36:53,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1075030192, now seen corresponding path program 1 times [2020-08-19 06:36:53,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:36:53,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045366888] [2020-08-19 06:36:53,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:36:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,374 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:36:53,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:36:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:36:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:36:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:36:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:36:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:36:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 06:36:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:36:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:36:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:36:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 06:36:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:36:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,511 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 06:36:53,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045366888] [2020-08-19 06:36:53,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:36:53,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:36:53,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703151587] [2020-08-19 06:36:53,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:36:53,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:36:53,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:36:53,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:36:53,514 INFO L87 Difference]: Start difference. First operand 176 states and 203 transitions. Second operand 12 states. [2020-08-19 06:36:54,056 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:36:54,302 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:36:54,533 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:36:55,244 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:36:55,485 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:36:55,730 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:36:55,963 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:36:56,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:36:56,725 INFO L93 Difference]: Finished difference Result 372 states and 462 transitions. [2020-08-19 06:36:56,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 06:36:56,726 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-19 06:36:56,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:36:56,730 INFO L225 Difference]: With dead ends: 372 [2020-08-19 06:36:56,731 INFO L226 Difference]: Without dead ends: 224 [2020-08-19 06:36:56,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-19 06:36:56,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-08-19 06:36:56,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 181. [2020-08-19 06:36:56,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-08-19 06:36:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 208 transitions. [2020-08-19 06:36:56,778 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 208 transitions. Word has length 79 [2020-08-19 06:36:56,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:36:56,778 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 208 transitions. [2020-08-19 06:36:56,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:36:56,778 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 208 transitions. [2020-08-19 06:36:56,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 06:36:56,779 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:36:56,779 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 06:36:56,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:36:56,779 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:36:56,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:36:56,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1584503282, now seen corresponding path program 1 times [2020-08-19 06:36:56,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:36:56,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925299343] [2020-08-19 06:36:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:36:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:57,067 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:36:57,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:36:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:57,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:36:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:57,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:36:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:57,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:36:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:57,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:36:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:57,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:36:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:57,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 06:36:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:57,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:36:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:57,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:36:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:57,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:36:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:57,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 06:36:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:57,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:36:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:57,164 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 06:36:57,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925299343] [2020-08-19 06:36:57,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:36:57,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:36:57,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104237306] [2020-08-19 06:36:57,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:36:57,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:36:57,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:36:57,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:36:57,168 INFO L87 Difference]: Start difference. First operand 181 states and 208 transitions. Second operand 9 states. [2020-08-19 06:36:57,474 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:36:58,556 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:36:58,825 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:36:59,054 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:36:59,267 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:00,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:00,050 INFO L93 Difference]: Finished difference Result 539 states and 685 transitions. [2020-08-19 06:37:00,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 06:37:00,051 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-19 06:37:00,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:00,054 INFO L225 Difference]: With dead ends: 539 [2020-08-19 06:37:00,055 INFO L226 Difference]: Without dead ends: 386 [2020-08-19 06:37:00,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 06:37:00,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-08-19 06:37:00,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 310. [2020-08-19 06:37:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-08-19 06:37:00,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 356 transitions. [2020-08-19 06:37:00,130 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 356 transitions. Word has length 79 [2020-08-19 06:37:00,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:00,130 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 356 transitions. [2020-08-19 06:37:00,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:37:00,130 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 356 transitions. [2020-08-19 06:37:00,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 06:37:00,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:00,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:00,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:37:00,132 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:00,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:00,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1898506966, now seen corresponding path program 1 times [2020-08-19 06:37:00,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:00,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240857252] [2020-08-19 06:37:00,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:00,410 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:00,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:00,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:00,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:00,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:00,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:00,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:00,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:37:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:00,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:37:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:00,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:00,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:00,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:00,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 06:37:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:00,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 06:37:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:00,537 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 06:37:00,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240857252] [2020-08-19 06:37:00,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:00,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 06:37:00,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969399375] [2020-08-19 06:37:00,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:37:00,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:00,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:37:00,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:37:00,546 INFO L87 Difference]: Start difference. First operand 310 states and 356 transitions. Second operand 10 states. [2020-08-19 06:37:00,881 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:01,992 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:02,237 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:02,505 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:02,800 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:03,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:03,812 INFO L93 Difference]: Finished difference Result 706 states and 881 transitions. [2020-08-19 06:37:03,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 06:37:03,813 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-19 06:37:03,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:03,818 INFO L225 Difference]: With dead ends: 706 [2020-08-19 06:37:03,818 INFO L226 Difference]: Without dead ends: 424 [2020-08-19 06:37:03,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-08-19 06:37:03,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-08-19 06:37:03,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 309. [2020-08-19 06:37:03,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-19 06:37:03,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 353 transitions. [2020-08-19 06:37:03,885 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 353 transitions. Word has length 83 [2020-08-19 06:37:03,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:03,885 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 353 transitions. [2020-08-19 06:37:03,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:37:03,886 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 353 transitions. [2020-08-19 06:37:03,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 06:37:03,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:03,887 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 06:37:03,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:37:03,888 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:03,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:03,888 INFO L82 PathProgramCache]: Analyzing trace with hash -226819900, now seen corresponding path program 1 times [2020-08-19 06:37:03,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:03,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040563148] [2020-08-19 06:37:03,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:04,168 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:04,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:04,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:04,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:04,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:04,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:04,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:04,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:37:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:04,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:37:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:04,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:04,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:04,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:04,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 06:37:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:04,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 06:37:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:04,306 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 06:37:04,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040563148] [2020-08-19 06:37:04,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:04,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:37:04,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103356240] [2020-08-19 06:37:04,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:37:04,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:04,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:37:04,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:37:04,308 INFO L87 Difference]: Start difference. First operand 309 states and 353 transitions. Second operand 12 states. [2020-08-19 06:37:04,836 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:05,101 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:05,347 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:06,056 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:06,320 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:06,586 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:07,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:07,451 INFO L93 Difference]: Finished difference Result 713 states and 897 transitions. [2020-08-19 06:37:07,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:37:07,452 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-19 06:37:07,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:07,466 INFO L225 Difference]: With dead ends: 713 [2020-08-19 06:37:07,467 INFO L226 Difference]: Without dead ends: 432 [2020-08-19 06:37:07,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 06:37:07,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-08-19 06:37:07,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 317. [2020-08-19 06:37:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-08-19 06:37:07,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 361 transitions. [2020-08-19 06:37:07,573 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 361 transitions. Word has length 84 [2020-08-19 06:37:07,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:07,573 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 361 transitions. [2020-08-19 06:37:07,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:37:07,574 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 361 transitions. [2020-08-19 06:37:07,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 06:37:07,576 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:07,576 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 06:37:07,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:37:07,577 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:07,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:07,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1613023294, now seen corresponding path program 1 times [2020-08-19 06:37:07,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:07,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453875175] [2020-08-19 06:37:07,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:07,849 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:07,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:07,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:07,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:07,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:07,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:07,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:07,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:37:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:07,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:37:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:07,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:07,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:07,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:07,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 06:37:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:07,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 06:37:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:07,996 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 06:37:07,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453875175] [2020-08-19 06:37:07,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:07,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 06:37:07,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293389990] [2020-08-19 06:37:07,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:37:07,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:07,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:37:08,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:37:08,000 INFO L87 Difference]: Start difference. First operand 317 states and 361 transitions. Second operand 10 states. [2020-08-19 06:37:09,038 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:09,289 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 06:37:09,559 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:09,804 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:10,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:10,626 INFO L93 Difference]: Finished difference Result 715 states and 895 transitions. [2020-08-19 06:37:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:37:10,627 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-19 06:37:10,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:10,631 INFO L225 Difference]: With dead ends: 715 [2020-08-19 06:37:10,631 INFO L226 Difference]: Without dead ends: 426 [2020-08-19 06:37:10,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 06:37:10,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-19 06:37:10,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 317. [2020-08-19 06:37:10,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-08-19 06:37:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 359 transitions. [2020-08-19 06:37:10,739 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 359 transitions. Word has length 84 [2020-08-19 06:37:10,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:10,742 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 359 transitions. [2020-08-19 06:37:10,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:37:10,742 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 359 transitions. [2020-08-19 06:37:10,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 06:37:10,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:10,746 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 06:37:10,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:37:10,747 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:10,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:10,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1884470469, now seen corresponding path program 1 times [2020-08-19 06:37:10,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:10,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855693007] [2020-08-19 06:37:10,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:11,094 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:11,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:11,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:11,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:11,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:11,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:11,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:11,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:37:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:11,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:37:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:11,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:11,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:11,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:11,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 06:37:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:11,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 06:37:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:11,282 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 06:37:11,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855693007] [2020-08-19 06:37:11,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:11,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:37:11,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245708321] [2020-08-19 06:37:11,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:37:11,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:11,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:37:11,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:37:11,285 INFO L87 Difference]: Start difference. First operand 317 states and 359 transitions. Second operand 8 states. [2020-08-19 06:37:11,642 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:12,227 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:14,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:14,295 INFO L93 Difference]: Finished difference Result 1041 states and 1362 transitions. [2020-08-19 06:37:14,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 06:37:14,295 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-19 06:37:14,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:14,301 INFO L225 Difference]: With dead ends: 1041 [2020-08-19 06:37:14,302 INFO L226 Difference]: Without dead ends: 752 [2020-08-19 06:37:14,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-19 06:37:14,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2020-08-19 06:37:14,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 607. [2020-08-19 06:37:14,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-08-19 06:37:14,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 711 transitions. [2020-08-19 06:37:14,434 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 711 transitions. Word has length 84 [2020-08-19 06:37:14,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:14,434 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 711 transitions. [2020-08-19 06:37:14,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:37:14,435 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 711 transitions. [2020-08-19 06:37:14,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 06:37:14,436 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:14,437 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 06:37:14,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:37:14,437 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:14,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:14,437 INFO L82 PathProgramCache]: Analyzing trace with hash 713728159, now seen corresponding path program 1 times [2020-08-19 06:37:14,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:14,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10863547] [2020-08-19 06:37:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:14,676 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:14,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:14,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:14,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:14,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:14,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:14,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:14,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:37:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:14,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:37:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:14,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:37:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:14,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:14,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:14,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:14,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 06:37:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:14,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 06:37:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:14,773 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 06:37:14,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10863547] [2020-08-19 06:37:14,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:14,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:37:14,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446040339] [2020-08-19 06:37:14,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:37:14,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:14,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:37:14,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:37:14,778 INFO L87 Difference]: Start difference. First operand 607 states and 711 transitions. Second operand 8 states. [2020-08-19 06:37:15,242 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:17,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:17,225 INFO L93 Difference]: Finished difference Result 1199 states and 1560 transitions. [2020-08-19 06:37:17,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 06:37:17,226 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-19 06:37:17,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:17,235 INFO L225 Difference]: With dead ends: 1199 [2020-08-19 06:37:17,235 INFO L226 Difference]: Without dead ends: 1196 [2020-08-19 06:37:17,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-19 06:37:17,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2020-08-19 06:37:17,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 975. [2020-08-19 06:37:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-08-19 06:37:17,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1150 transitions. [2020-08-19 06:37:17,424 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1150 transitions. Word has length 88 [2020-08-19 06:37:17,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:17,425 INFO L479 AbstractCegarLoop]: Abstraction has 975 states and 1150 transitions. [2020-08-19 06:37:17,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:37:17,425 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1150 transitions. [2020-08-19 06:37:17,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-19 06:37:17,428 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:17,429 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:17,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:37:17,429 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:17,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:17,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1128183326, now seen corresponding path program 1 times [2020-08-19 06:37:17,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:17,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480495554] [2020-08-19 06:37:17,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:37:17,485 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:37:17,486 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:37:17,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 06:37:17,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:37:17 BoogieIcfgContainer [2020-08-19 06:37:17,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:37:17,519 INFO L168 Benchmark]: Toolchain (without parser) took 35423.97 ms. Allocated memory was 140.0 MB in the beginning and 634.4 MB in the end (delta: 494.4 MB). Free memory was 101.7 MB in the beginning and 160.7 MB in the end (delta: -59.0 MB). Peak memory consumption was 435.4 MB. Max. memory is 7.1 GB. [2020-08-19 06:37:17,519 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-19 06:37:17,520 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.66 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.7 MB in the beginning and 170.6 MB in the end (delta: -68.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-08-19 06:37:17,521 INFO L168 Benchmark]: Boogie Preprocessor took 108.39 ms. Allocated memory is still 203.4 MB. Free memory was 170.6 MB in the beginning and 165.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-08-19 06:37:17,521 INFO L168 Benchmark]: RCFGBuilder took 1085.13 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 165.7 MB in the beginning and 194.7 MB in the end (delta: -28.9 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. [2020-08-19 06:37:17,522 INFO L168 Benchmark]: TraceAbstraction took 33532.57 ms. Allocated memory was 235.9 MB in the beginning and 634.4 MB in the end (delta: 398.5 MB). Free memory was 194.7 MB in the beginning and 160.7 MB in the end (delta: 34.0 MB). Peak memory consumption was 432.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:37:17,525 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.66 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.7 MB in the beginning and 170.6 MB in the end (delta: -68.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.39 ms. Allocated memory is still 203.4 MB. Free memory was 170.6 MB in the beginning and 165.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1085.13 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 165.7 MB in the beginning and 194.7 MB in the end (delta: -28.9 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33532.57 ms. Allocated memory was 235.9 MB in the beginning and 634.4 MB in the end (delta: 398.5 MB). Free memory was 194.7 MB in the beginning and 160.7 MB in the end (delta: 34.0 MB). Peak memory consumption was 432.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 249]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L151] int waterLevel = 1; [L152] int methaneLevelCritical = 0; [L255] int methAndRunningLastTime ; [L498] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L765] int pumpRunning = 0; [L766] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L320] int retValue_acc ; [L323] retValue_acc = 1 [L324] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L113] CALL __utac_acc__Specification2_spec__1() [L260] methAndRunningLastTime = 0 [L113] RET __utac_acc__Specification2_spec__1() [L114] CALL test() [L697] int splverifierCounter ; [L698] int tmp ; [L699] int tmp___0 ; [L700] int tmp___1 ; [L701] int tmp___2 ; [L704] splverifierCounter = 0 [L706] COND TRUE 1 [L708] COND TRUE splverifierCounter < 4 [L714] tmp = __VERIFIER_nondet_int() [L716] COND TRUE \read(tmp) [L718] CALL waterRise() [L169] COND TRUE waterLevel < 2 [L170] waterLevel = waterLevel + 1 [L718] RET waterRise() [L724] tmp___0 = __VERIFIER_nondet_int() [L726] COND TRUE \read(tmp___0) [L728] CALL changeMethaneLevel() [L181] COND FALSE !(\read(methaneLevelCritical)) [L184] methaneLevelCritical = 1 [L728] RET changeMethaneLevel() [L734] tmp___2 = __VERIFIER_nondet_int() [L736] COND FALSE !(\read(tmp___2)) [L742] tmp___1 = __VERIFIER_nondet_int() [L744] COND TRUE \read(tmp___1) [L751] CALL timeShift() [L772] COND FALSE !(\read(pumpRunning)) [L779] COND TRUE \read(systemActive) [L781] CALL processEnvironment() [L801] int tmp ; [L804] COND TRUE ! pumpRunning [L806] CALL, EXPR isHighWaterLevel() [L898] int retValue_acc ; [L899] int tmp ; [L900] int tmp___0 ; [L904] CALL, EXPR isHighWaterSensorDry() [L231] int retValue_acc ; [L234] COND FALSE !(waterLevel < 2) [L238] retValue_acc = 0 [L239] return (retValue_acc); [L904] RET, EXPR isHighWaterSensorDry() [L904] tmp = isHighWaterSensorDry() [L906] COND FALSE !(\read(tmp)) [L909] tmp___0 = 1 [L911] retValue_acc = tmp___0 [L912] return (retValue_acc); [L806] RET, EXPR isHighWaterLevel() [L806] tmp = isHighWaterLevel() [L808] COND TRUE \read(tmp) [L810] CALL activatePump() [L829] pumpRunning = 1 [L810] RET activatePump() [L781] RET processEnvironment() [L787] CALL __utac_acc__Specification2_spec__2() [L265] int tmp ; [L266] int tmp___0 ; [L270] CALL, EXPR isMethaneLevelCritical() [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L270] RET, EXPR isMethaneLevelCritical() [L270] tmp = isMethaneLevelCritical() [L272] COND TRUE \read(tmp) [L274] CALL, EXPR isPumpRunning() [L853] int retValue_acc ; [L856] retValue_acc = pumpRunning [L857] return (retValue_acc); [L274] RET, EXPR isPumpRunning() [L274] tmp___0 = isPumpRunning() [L276] COND TRUE \read(tmp___0) [L277] COND FALSE !(\read(methAndRunningLastTime)) [L282] methAndRunningLastTime = 1 [L787] RET __utac_acc__Specification2_spec__2() [L751] RET timeShift() [L706] COND TRUE 1 [L708] COND TRUE splverifierCounter < 4 [L714] tmp = __VERIFIER_nondet_int() [L716] COND FALSE !(\read(tmp)) [L724] tmp___0 = __VERIFIER_nondet_int() [L726] COND FALSE !(\read(tmp___0)) [L734] tmp___2 = __VERIFIER_nondet_int() [L736] COND FALSE !(\read(tmp___2)) [L742] tmp___1 = __VERIFIER_nondet_int() [L744] COND TRUE \read(tmp___1) [L751] CALL timeShift() [L772] COND TRUE \read(pumpRunning) [L774] CALL lowerWaterLevel() [L157] COND TRUE waterLevel > 0 [L158] waterLevel = waterLevel - 1 [L774] RET lowerWaterLevel() [L779] COND TRUE \read(systemActive) [L781] CALL processEnvironment() [L801] int tmp ; [L804] COND FALSE !(! pumpRunning) [L819] FCALL processEnvironment__wrappee__base() [L781] RET processEnvironment() [L787] CALL __utac_acc__Specification2_spec__2() [L265] int tmp ; [L266] int tmp___0 ; [L270] CALL, EXPR isMethaneLevelCritical() [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L270] RET, EXPR isMethaneLevelCritical() [L270] tmp = isMethaneLevelCritical() [L272] COND TRUE \read(tmp) [L274] CALL, EXPR isPumpRunning() [L853] int retValue_acc ; [L856] retValue_acc = pumpRunning [L857] return (retValue_acc); [L274] RET, EXPR isPumpRunning() [L274] tmp___0 = isPumpRunning() [L276] COND TRUE \read(tmp___0) [L277] COND TRUE \read(methAndRunningLastTime) [L279] CALL __automaton_fail() [L249] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 224 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.4s, OverallIterations: 12, TraceHistogramMax: 2, AutomataDifference: 27.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1100 SDtfs, 3134 SDslu, 1445 SDs, 0 SdLazy, 6082 SolverSat, 2326 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 464 GetRequests, 288 SyntacticMatches, 3 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=975occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 964 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 937 NumberOfCodeBlocks, 937 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 795 ConstructedInterpolants, 0 QuantifiedInterpolants, 249077 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...