/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:01:38,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:01:38,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:01:38,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:01:38,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:01:38,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:01:38,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:01:38,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:01:38,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:01:38,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:01:38,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:01:38,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:01:38,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:01:38,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:01:38,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:01:38,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:01:38,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:01:38,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:01:38,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:01:38,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:01:38,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:01:38,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:01:38,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:01:38,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:01:38,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:01:38,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:01:38,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:01:38,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:01:38,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:01:38,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:01:38,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:01:38,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:01:38,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:01:38,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:01:38,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:01:38,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:01:38,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:01:38,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:01:38,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:01:38,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:01:38,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:01:38,740 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 [2020-09-21 10:01:38,795 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:01:38,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:01:38,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:01:38,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:01:38,799 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:01:38,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:01:38,799 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:01:38,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:01:38,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:01:38,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:01:38,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:01:38,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:01:38,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:01:38,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:01:38,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:01:38,801 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:01:38,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:01:38,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:01:38,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:01:38,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:01:38,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:01:38,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:01:38,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:01:38,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:01:38,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:01:38,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:01:38,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:01:38,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:01:38,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:01:38,806 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 -> false [2020-09-21 10:01:39,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:01:39,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:01:39,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:01:39,269 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:01:39,269 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:01:39,271 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-09-21 10:01:39,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a72f320e4/49fb526441224b6199fd26c21f5b4c81/FLAGcc691d4de [2020-09-21 10:01:39,943 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:01:39,944 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-09-21 10:01:39,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a72f320e4/49fb526441224b6199fd26c21f5b4c81/FLAGcc691d4de [2020-09-21 10:01:40,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a72f320e4/49fb526441224b6199fd26c21f5b4c81 [2020-09-21 10:01:40,226 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:01:40,232 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:01:40,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:01:40,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:01:40,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:01:40,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:01:40" (1/1) ... [2020-09-21 10:01:40,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc9c326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:01:40, skipping insertion in model container [2020-09-21 10:01:40,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:01:40" (1/1) ... [2020-09-21 10:01:40,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:01:40,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:01:40,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:01:40,771 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:01:40,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:01:40,919 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:01:40,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:01:40 WrapperNode [2020-09-21 10:01:40,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:01:40,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:01:40,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:01:40,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:01:40,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:01:40" (1/1) ... [2020-09-21 10:01:40,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:01:40" (1/1) ... [2020-09-21 10:01:40,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:01:40" (1/1) ... [2020-09-21 10:01:40,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:01:40" (1/1) ... [2020-09-21 10:01:40,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:01:40" (1/1) ... [2020-09-21 10:01:41,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:01:40" (1/1) ... [2020-09-21 10:01:41,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:01:40" (1/1) ... [2020-09-21 10:01:41,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:01:41,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:01:41,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:01:41,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:01:41,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:01:40" (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 [2020-09-21 10:01:41,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:01:41,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:01:41,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:01:41,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:01:41,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:01:41,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:01:41,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:01:41,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:01:41,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:01:41,109 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:01:41,109 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:01:41,109 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:01:41,109 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:01:41,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:01:41,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 10:01:41,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:01:41,110 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:01:41,110 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:01:41,110 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:01:41,111 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:01:41,111 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:01:41,111 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:01:41,111 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 10:01:41,112 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:01:41,112 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:01:41,112 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:01:41,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:01:41,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:01:41,112 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:01:41,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:01:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:01:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:01:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:01:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:01:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:01:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:01:41,114 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:01:41,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:01:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:01:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:01:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:01:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:01:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:01:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:01:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:01:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:01:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:01:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:01:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:01:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:01:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:01:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:01:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:01:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:01:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:01:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:01:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:01:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:01:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:01:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:01:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:01:41,118 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:01:41,118 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:01:41,118 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:01:41,118 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:01:41,118 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:01:41,118 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:01:41,118 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:01:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:01:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:01:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:01:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:01:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:01:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:01:41,120 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 10:01:41,120 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:01:41,120 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:01:41,120 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:01:41,120 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:01:41,120 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:01:41,121 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:01:41,121 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:01:41,121 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:01:41,121 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:01:41,121 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 10:01:41,121 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:01:41,122 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:01:41,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:01:41,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:01:41,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:01:42,155 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:01:42,155 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:01:42,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:01:42 BoogieIcfgContainer [2020-09-21 10:01:42,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:01:42,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:01:42,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:01:42,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:01:42,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:01:40" (1/3) ... [2020-09-21 10:01:42,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ad5fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:01:42, skipping insertion in model container [2020-09-21 10:01:42,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:01:40" (2/3) ... [2020-09-21 10:01:42,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ad5fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:01:42, skipping insertion in model container [2020-09-21 10:01:42,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:01:42" (3/3) ... [2020-09-21 10:01:42,170 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2020-09-21 10:01:42,181 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:01:42,192 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:01:42,214 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:01:42,240 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:01:42,240 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:01:42,240 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:01:42,241 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:01:42,241 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:01:42,241 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:01:42,241 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:01:42,241 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:01:42,269 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-09-21 10:01:42,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 10:01:42,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:01:42,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:01:42,282 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:01:42,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:01:42,288 INFO L82 PathProgramCache]: Analyzing trace with hash -749162492, now seen corresponding path program 1 times [2020-09-21 10:01:42,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:01:42,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215660218] [2020-09-21 10:01:42,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:01:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:43,139 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:01:43,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:01:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:43,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:01:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:43,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:01:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:43,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:01:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:43,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:01:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:43,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:01:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:43,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:01:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:01:43,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215660218] [2020-09-21 10:01:43,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:01:43,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:01:43,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463999840] [2020-09-21 10:01:43,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:01:43,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:01:43,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:01:43,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:01:43,322 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-09-21 10:01:44,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:01:44,410 INFO L93 Difference]: Finished difference Result 287 states and 378 transitions. [2020-09-21 10:01:44,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:01:44,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 10:01:44,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:01:44,430 INFO L225 Difference]: With dead ends: 287 [2020-09-21 10:01:44,430 INFO L226 Difference]: Without dead ends: 155 [2020-09-21 10:01:44,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:01:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-21 10:01:44,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-09-21 10:01:44,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-21 10:01:44,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2020-09-21 10:01:44,537 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 46 [2020-09-21 10:01:44,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:01:44,538 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2020-09-21 10:01:44,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:01:44,538 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2020-09-21 10:01:44,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 10:01:44,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:01:44,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:01:44,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:01:44,545 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:01:44,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:01:44,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1435333190, now seen corresponding path program 1 times [2020-09-21 10:01:44,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:01:44,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48510502] [2020-09-21 10:01:44,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:01:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:44,948 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:01:44,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:01:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:44,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:01:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:44,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:01:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:44,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:01:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:44,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:01:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:44,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:01:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:44,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:01:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:01:45,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48510502] [2020-09-21 10:01:45,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:01:45,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:01:45,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111543693] [2020-09-21 10:01:45,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:01:45,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:01:45,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:01:45,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:01:45,007 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand 4 states. [2020-09-21 10:01:45,428 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:01:46,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:01:46,299 INFO L93 Difference]: Finished difference Result 220 states and 269 transitions. [2020-09-21 10:01:46,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:01:46,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 10:01:46,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:01:46,305 INFO L225 Difference]: With dead ends: 220 [2020-09-21 10:01:46,305 INFO L226 Difference]: Without dead ends: 139 [2020-09-21 10:01:46,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:01:46,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-09-21 10:01:46,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-09-21 10:01:46,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-21 10:01:46,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-09-21 10:01:46,345 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 47 [2020-09-21 10:01:46,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:01:46,345 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-09-21 10:01:46,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:01:46,345 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-09-21 10:01:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 10:01:46,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:01:46,348 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] [2020-09-21 10:01:46,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:01:46,348 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:01:46,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:01:46,349 INFO L82 PathProgramCache]: Analyzing trace with hash 325618258, now seen corresponding path program 1 times [2020-09-21 10:01:46,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:01:46,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765610313] [2020-09-21 10:01:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:01:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:46,722 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:01:46,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:01:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:46,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:01:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:46,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:01:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:46,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:01:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:46,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:01:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:46,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:01:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:46,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:01:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:46,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:01:46,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765610313] [2020-09-21 10:01:46,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:01:46,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:01:46,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210276867] [2020-09-21 10:01:46,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:01:46,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:01:46,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:01:46,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:01:46,813 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 8 states. [2020-09-21 10:01:47,213 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:01:47,579 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:01:47,848 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:01:48,133 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:01:49,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:01:49,382 INFO L93 Difference]: Finished difference Result 229 states and 283 transitions. [2020-09-21 10:01:49,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 10:01:49,382 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-21 10:01:49,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:01:49,385 INFO L225 Difference]: With dead ends: 229 [2020-09-21 10:01:49,385 INFO L226 Difference]: Without dead ends: 139 [2020-09-21 10:01:49,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:01:49,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-09-21 10:01:49,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-09-21 10:01:49,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-21 10:01:49,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-09-21 10:01:49,420 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 51 [2020-09-21 10:01:49,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:01:49,421 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-09-21 10:01:49,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:01:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-09-21 10:01:49,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-21 10:01:49,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:01:49,426 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] [2020-09-21 10:01:49,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:01:49,427 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:01:49,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:01:49,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1759847866, now seen corresponding path program 1 times [2020-09-21 10:01:49,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:01:49,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916785868] [2020-09-21 10:01:49,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:01:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:49,765 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:01:49,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:01:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:49,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:01:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:49,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:01:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:49,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:01:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:49,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:01:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:49,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 10:01:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:49,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:01:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:49,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:01:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:01:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:49,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-21 10:01:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:01:49,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916785868] [2020-09-21 10:01:49,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:01:49,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:01:49,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007468149] [2020-09-21 10:01:49,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:01:49,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:01:49,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:01:49,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:01:49,952 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 6 states. [2020-09-21 10:01:50,370 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:01:51,538 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:01:52,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:01:52,306 INFO L93 Difference]: Finished difference Result 321 states and 399 transitions. [2020-09-21 10:01:52,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:01:52,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-09-21 10:01:52,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:01:52,311 INFO L225 Difference]: With dead ends: 321 [2020-09-21 10:01:52,311 INFO L226 Difference]: Without dead ends: 231 [2020-09-21 10:01:52,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:01:52,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-21 10:01:52,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 190. [2020-09-21 10:01:52,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-21 10:01:52,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 217 transitions. [2020-09-21 10:01:52,356 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 217 transitions. Word has length 64 [2020-09-21 10:01:52,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:01:52,357 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 217 transitions. [2020-09-21 10:01:52,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:01:52,357 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 217 transitions. [2020-09-21 10:01:52,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-21 10:01:52,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:01:52,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:01:52,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:01:52,360 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:01:52,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:01:52,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1017680522, now seen corresponding path program 1 times [2020-09-21 10:01:52,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:01:52,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577052074] [2020-09-21 10:01:52,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:01:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:52,790 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:01:52,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:01:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:52,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:01:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:52,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:01:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:52,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:01:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:52,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:01:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:52,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 10:01:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:52,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:01:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:52,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:01:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:52,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:01:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:52,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:01:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:52,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 10:01:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:52,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 10:01:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:52,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:01:52,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577052074] [2020-09-21 10:01:52,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:01:52,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:01:52,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995068336] [2020-09-21 10:01:52,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:01:52,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:01:52,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:01:52,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:01:52,925 INFO L87 Difference]: Start difference. First operand 190 states and 217 transitions. Second operand 8 states. [2020-09-21 10:01:53,362 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:01:54,682 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:01:55,035 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:01:55,341 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:01:55,636 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:01:56,023 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:01:57,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:01:57,229 INFO L93 Difference]: Finished difference Result 565 states and 701 transitions. [2020-09-21 10:01:57,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:01:57,230 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-09-21 10:01:57,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:01:57,234 INFO L225 Difference]: With dead ends: 565 [2020-09-21 10:01:57,234 INFO L226 Difference]: Without dead ends: 399 [2020-09-21 10:01:57,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:01:57,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-09-21 10:01:57,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 335. [2020-09-21 10:01:57,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-09-21 10:01:57,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 384 transitions. [2020-09-21 10:01:57,332 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 384 transitions. Word has length 78 [2020-09-21 10:01:57,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:01:57,333 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 384 transitions. [2020-09-21 10:01:57,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:01:57,333 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 384 transitions. [2020-09-21 10:01:57,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-21 10:01:57,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:01:57,335 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] [2020-09-21 10:01:57,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:01:57,336 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:01:57,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:01:57,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1476513266, now seen corresponding path program 1 times [2020-09-21 10:01:57,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:01:57,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270781103] [2020-09-21 10:01:57,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:01:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:57,740 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:01:57,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:01:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:57,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:01:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:57,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:01:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:57,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:01:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:57,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:01:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:57,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:01:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:57,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:01:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:57,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:01:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:57,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:01:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:57,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:01:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:57,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:01:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:57,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-21 10:01:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:57,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-21 10:01:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:01:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:01:57,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270781103] [2020-09-21 10:01:57,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:01:57,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:01:57,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55166662] [2020-09-21 10:01:57,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:01:57,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:01:57,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:01:57,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:01:57,887 INFO L87 Difference]: Start difference. First operand 335 states and 384 transitions. Second operand 9 states. [2020-09-21 10:01:58,565 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:01:59,834 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:00,128 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:00,498 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:00,825 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:01,135 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:02,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:02,260 INFO L93 Difference]: Finished difference Result 438 states and 552 transitions. [2020-09-21 10:02:02,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 10:02:02,261 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-09-21 10:02:02,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:02,266 INFO L225 Difference]: With dead ends: 438 [2020-09-21 10:02:02,266 INFO L226 Difference]: Without dead ends: 435 [2020-09-21 10:02:02,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 10:02:02,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-09-21 10:02:02,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 335. [2020-09-21 10:02:02,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-09-21 10:02:02,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 383 transitions. [2020-09-21 10:02:02,365 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 383 transitions. Word has length 82 [2020-09-21 10:02:02,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:02,365 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 383 transitions. [2020-09-21 10:02:02,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:02:02,366 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 383 transitions. [2020-09-21 10:02:02,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-21 10:02:02,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:02,368 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] [2020-09-21 10:02:02,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:02:02,368 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:02,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:02,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1573868364, now seen corresponding path program 1 times [2020-09-21 10:02:02,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:02,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874030822] [2020-09-21 10:02:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:02,643 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:02,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:02,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:02,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:02,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:02,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:02,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:02:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:02,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:02:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:02,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:02,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:02,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:02,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:02,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-21 10:02:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:02,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 10:02:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:02,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874030822] [2020-09-21 10:02:02,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:02,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:02:02,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626081929] [2020-09-21 10:02:02,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:02:02,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:02,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:02:02,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:02:02,803 INFO L87 Difference]: Start difference. First operand 335 states and 383 transitions. Second operand 9 states. [2020-09-21 10:02:03,855 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:04,240 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:02:04,601 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:04,947 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:06,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:06,009 INFO L93 Difference]: Finished difference Result 750 states and 926 transitions. [2020-09-21 10:02:06,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:02:06,010 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-09-21 10:02:06,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:06,013 INFO L225 Difference]: With dead ends: 750 [2020-09-21 10:02:06,013 INFO L226 Difference]: Without dead ends: 439 [2020-09-21 10:02:06,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:02:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-09-21 10:02:06,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 345. [2020-09-21 10:02:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-09-21 10:02:06,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-09-21 10:02:06,082 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 83 [2020-09-21 10:02:06,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:06,082 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-09-21 10:02:06,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:02:06,082 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-09-21 10:02:06,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-21 10:02:06,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:06,084 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] [2020-09-21 10:02:06,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:02:06,084 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:06,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:06,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1596500618, now seen corresponding path program 1 times [2020-09-21 10:02:06,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:06,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055240274] [2020-09-21 10:02:06,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:06,401 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:06,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:06,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:06,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:06,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:06,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:06,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:02:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:06,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:02:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:06,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:06,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:06,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:06,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:06,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-21 10:02:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:06,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 10:02:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:06,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:06,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055240274] [2020-09-21 10:02:06,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:06,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 10:02:06,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796666787] [2020-09-21 10:02:06,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 10:02:06,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:06,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 10:02:06,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:02:06,573 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 11 states. [2020-09-21 10:02:07,208 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:07,521 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:07,822 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:08,461 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:08,783 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:09,084 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:10,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:10,364 INFO L93 Difference]: Finished difference Result 774 states and 966 transitions. [2020-09-21 10:02:10,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:02:10,365 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-09-21 10:02:10,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:10,369 INFO L225 Difference]: With dead ends: 774 [2020-09-21 10:02:10,369 INFO L226 Difference]: Without dead ends: 453 [2020-09-21 10:02:10,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:02:10,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-09-21 10:02:10,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 353. [2020-09-21 10:02:10,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-09-21 10:02:10,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 401 transitions. [2020-09-21 10:02:10,436 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 401 transitions. Word has length 83 [2020-09-21 10:02:10,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:10,437 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 401 transitions. [2020-09-21 10:02:10,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 10:02:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 401 transitions. [2020-09-21 10:02:10,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-21 10:02:10,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:10,438 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] [2020-09-21 10:02:10,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:02:10,439 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:10,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:10,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1672974679, now seen corresponding path program 1 times [2020-09-21 10:02:10,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:10,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641663532] [2020-09-21 10:02:10,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:10,787 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:10,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:10,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:10,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:10,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:10,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:10,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:02:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:02:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:10,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:10,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:10,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:10,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:10,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-21 10:02:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:10,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 10:02:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:10,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641663532] [2020-09-21 10:02:10,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:10,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:02:10,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777064473] [2020-09-21 10:02:10,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:02:10,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:10,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:02:10,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:02:10,943 INFO L87 Difference]: Start difference. First operand 353 states and 401 transitions. Second operand 7 states. [2020-09-21 10:02:11,331 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:11,879 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:14,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:14,059 INFO L93 Difference]: Finished difference Result 1077 states and 1388 transitions. [2020-09-21 10:02:14,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 10:02:14,060 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-09-21 10:02:14,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:14,065 INFO L225 Difference]: With dead ends: 1077 [2020-09-21 10:02:14,065 INFO L226 Difference]: Without dead ends: 748 [2020-09-21 10:02:14,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:02:14,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-09-21 10:02:14,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 649. [2020-09-21 10:02:14,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-09-21 10:02:14,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 771 transitions. [2020-09-21 10:02:14,201 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 771 transitions. Word has length 83 [2020-09-21 10:02:14,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:14,205 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 771 transitions. [2020-09-21 10:02:14,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:02:14,205 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 771 transitions. [2020-09-21 10:02:14,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-21 10:02:14,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:14,210 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] [2020-09-21 10:02:14,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:02:14,210 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:14,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:14,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1457224847, now seen corresponding path program 1 times [2020-09-21 10:02:14,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:14,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707339095] [2020-09-21 10:02:14,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:02:14,294 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:02:14,295 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:02:14,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:02:14,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:02:14 BoogieIcfgContainer [2020-09-21 10:02:14,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:02:14,344 INFO L168 Benchmark]: Toolchain (without parser) took 34116.76 ms. Allocated memory was 141.6 MB in the beginning and 616.6 MB in the end (delta: 475.0 MB). Free memory was 102.9 MB in the beginning and 475.7 MB in the end (delta: -372.8 MB). Peak memory consumption was 102.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:02:14,345 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:02:14,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.69 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 173.9 MB in the end (delta: -71.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-09-21 10:02:14,347 INFO L168 Benchmark]: Boogie Preprocessor took 98.45 ms. Allocated memory is still 205.0 MB. Free memory was 173.9 MB in the beginning and 169.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-21 10:02:14,347 INFO L168 Benchmark]: RCFGBuilder took 1142.09 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 169.9 MB in the beginning and 193.6 MB in the end (delta: -23.7 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:02:14,348 INFO L168 Benchmark]: TraceAbstraction took 32179.98 ms. Allocated memory was 234.9 MB in the beginning and 616.6 MB in the end (delta: 381.7 MB). Free memory was 193.6 MB in the beginning and 475.7 MB in the end (delta: -282.1 MB). Peak memory consumption was 99.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:02:14,352 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 686.69 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 173.9 MB in the end (delta: -71.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.45 ms. Allocated memory is still 205.0 MB. Free memory was 173.9 MB in the beginning and 169.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1142.09 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 169.9 MB in the beginning and 193.6 MB in the end (delta: -23.7 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32179.98 ms. Allocated memory was 234.9 MB in the beginning and 616.6 MB in the end (delta: 381.7 MB). Free memory was 193.6 MB in the beginning and 475.7 MB in the end (delta: -282.1 MB). Peak memory consumption was 99.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 543]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L588] int pumpRunning = 0; [L589] int systemActive = 1; [L832] int waterLevel = 1; [L833] int methaneLevelCritical = 0; [L487] int retValue_acc ; [L488] int tmp ; [L492] FCALL select_helpers() [L493] FCALL select_features() [L494] CALL, EXPR valid_product() [L574] int retValue_acc ; [L577] retValue_acc = 1 [L578] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L767] int splverifierCounter ; [L768] int tmp ; [L769] int tmp___0 ; [L770] int tmp___1 ; [L771] int tmp___2 ; [L774] splverifierCounter = 0 [L776] COND TRUE 1 [L778] COND TRUE splverifierCounter < 4 [L784] tmp = __VERIFIER_nondet_int() [L786] COND TRUE \read(tmp) [L788] CALL waterRise() [L850] COND TRUE waterLevel < 2 [L851] waterLevel = waterLevel + 1 [L788] RET waterRise() [L794] tmp___0 = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp___0) [L798] CALL changeMethaneLevel() [L862] COND FALSE !(\read(methaneLevelCritical)) [L865] methaneLevelCritical = 1 [L798] RET changeMethaneLevel() [L804] tmp___2 = __VERIFIER_nondet_int() [L806] COND TRUE \read(tmp___2) [L819] CALL timeShift() [L595] COND FALSE !(\read(pumpRunning)) [L602] COND TRUE \read(systemActive) [L604] CALL processEnvironment() [L650] int tmp ; [L653] COND FALSE !(\read(pumpRunning)) [L668] CALL processEnvironment__wrappee__highWaterSensor() [L624] int tmp ; [L627] COND TRUE ! pumpRunning [L629] CALL, EXPR isHighWaterLevel() [L747] int retValue_acc ; [L748] int tmp ; [L749] int tmp___0 ; [L753] CALL, EXPR isHighWaterSensorDry() [L912] int retValue_acc ; [L915] COND FALSE !(waterLevel < 2) [L919] retValue_acc = 0 [L920] return (retValue_acc); [L753] RET, EXPR isHighWaterSensorDry() [L753] tmp = isHighWaterSensorDry() [L755] COND FALSE !(\read(tmp)) [L758] tmp___0 = 1 [L760] retValue_acc = tmp___0 [L761] return (retValue_acc); [L629] RET, EXPR isHighWaterLevel() [L629] tmp = isHighWaterLevel() [L631] COND TRUE \read(tmp) [L633] CALL activatePump() [L678] pumpRunning = 1 [L633] RET activatePump() [L668] RET processEnvironment__wrappee__highWaterSensor() [L604] RET processEnvironment() [L610] CALL __utac_acc__Specification1_spec__1() [L514] int tmp ; [L515] int tmp___0 ; [L519] CALL, EXPR isMethaneLevelCritical() [L871] int retValue_acc ; [L874] retValue_acc = methaneLevelCritical [L875] return (retValue_acc); [L519] RET, EXPR isMethaneLevelCritical() [L519] tmp = isMethaneLevelCritical() [L521] COND TRUE \read(tmp) [L523] CALL, EXPR isPumpRunning() [L702] int retValue_acc ; [L705] retValue_acc = pumpRunning [L706] return (retValue_acc); [L523] RET, EXPR isPumpRunning() [L523] tmp___0 = isPumpRunning() [L525] COND TRUE \read(tmp___0) [L527] CALL __automaton_fail() [L543] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 26.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1008 SDtfs, 1711 SDslu, 941 SDs, 0 SdLazy, 4735 SolverSat, 1066 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=649occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 580 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 704 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 608 ConstructedInterpolants, 0 QuantifiedInterpolants, 186785 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...