/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:26:06,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:26:06,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:26:06,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:26:06,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:26:06,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:26:06,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:26:06,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:26:06,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:26:06,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:26:06,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:26:06,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:26:06,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:26:06,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:26:06,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:26:06,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:26:06,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:26:06,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:26:06,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:26:06,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:26:06,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:26:06,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:26:06,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:26:06,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:26:06,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:26:06,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:26:06,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:26:06,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:26:06,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:26:06,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:26:06,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:26:06,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:26:06,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:26:06,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:26:06,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:26:06,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:26:06,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:26:06,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:26:06,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:26:06,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:26:06,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:26:06,937 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 20:26:06,976 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:26:06,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:26:06,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:26:06,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:26:06,979 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:26:06,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:26:06,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:26:06,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:26:06,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:26:06,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:26:06,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:26:06,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:26:06,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:26:06,982 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:26:06,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:26:06,982 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:26:06,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:26:06,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:26:06,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:26:06,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:26:06,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:26:06,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:26:06,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:26:06,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:26:06,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:26:06,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:26:06,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:26:06,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:26:06,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:26:06,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:26:07,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:26:07,277 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:26:07,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:26:07,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:26:07,283 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:26:07,284 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2020-08-21 20:26:07,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94c53e906/05b419e487e94549a083495c2738ad38/FLAG9c3edafd5 [2020-08-21 20:26:07,902 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:26:07,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2020-08-21 20:26:07,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94c53e906/05b419e487e94549a083495c2738ad38/FLAG9c3edafd5 [2020-08-21 20:26:08,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94c53e906/05b419e487e94549a083495c2738ad38 [2020-08-21 20:26:08,278 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:26:08,279 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:26:08,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:26:08,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:26:08,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:26:08,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:26:08" (1/1) ... [2020-08-21 20:26:08,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75faffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:08, skipping insertion in model container [2020-08-21 20:26:08,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:26:08" (1/1) ... [2020-08-21 20:26:08,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:26:08,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:26:08,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:26:08,844 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:26:08,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:26:08,950 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:26:08,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:08 WrapperNode [2020-08-21 20:26:08,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:26:08,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:26:08,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:26:08,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:26:08,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:08" (1/1) ... [2020-08-21 20:26:08,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:08" (1/1) ... [2020-08-21 20:26:08,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:08" (1/1) ... [2020-08-21 20:26:08,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:08" (1/1) ... [2020-08-21 20:26:09,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:08" (1/1) ... [2020-08-21 20:26:09,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:08" (1/1) ... [2020-08-21 20:26:09,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:08" (1/1) ... [2020-08-21 20:26:09,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:26:09,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:26:09,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:26:09,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:26:09,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:26:09,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:26:09,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:26:09,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 20:26:09,115 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 20:26:09,116 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 20:26:09,116 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 20:26:09,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 20:26:09,116 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 20:26:09,116 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 20:26:09,117 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 20:26:09,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 20:26:09,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 20:26:09,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 20:26:09,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 20:26:09,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 20:26:09,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 20:26:09,119 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 20:26:09,119 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 20:26:09,119 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 20:26:09,119 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 20:26:09,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 20:26:09,120 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 20:26:09,120 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 20:26:09,120 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 20:26:09,120 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 20:26:09,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:26:09,121 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 20:26:09,122 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 20:26:09,122 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 20:26:09,122 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 20:26:09,122 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 20:26:09,122 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 20:26:09,122 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 20:26:09,122 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 20:26:09,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 20:26:09,123 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 20:26:09,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 20:26:09,123 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 20:26:09,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 20:26:09,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:26:09,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:26:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 20:26:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 20:26:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 20:26:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 20:26:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 20:26:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 20:26:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 20:26:09,125 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 20:26:09,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:26:09,126 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 20:26:09,126 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 20:26:09,126 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 20:26:09,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 20:26:09,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 20:26:09,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 20:26:09,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:26:09,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 20:26:09,127 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 20:26:09,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:26:09,128 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 20:26:09,128 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 20:26:09,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:26:09,128 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 20:26:09,128 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 20:26:09,128 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 20:26:09,129 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 20:26:09,129 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 20:26:09,129 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 20:26:09,129 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 20:26:09,129 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 20:26:09,130 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 20:26:09,130 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 20:26:09,131 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 20:26:09,131 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 20:26:09,132 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 20:26:09,132 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 20:26:09,132 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 20:26:09,132 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 20:26:09,133 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 20:26:09,133 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:26:09,134 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 20:26:09,134 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 20:26:09,134 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 20:26:09,134 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 20:26:09,134 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 20:26:09,135 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 20:26:09,135 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 20:26:09,135 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 20:26:09,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:26:09,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 20:26:09,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:26:10,201 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:26:10,201 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 20:26:10,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:26:10 BoogieIcfgContainer [2020-08-21 20:26:10,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:26:10,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:26:10,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:26:10,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:26:10,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:26:08" (1/3) ... [2020-08-21 20:26:10,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645d8ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:26:10, skipping insertion in model container [2020-08-21 20:26:10,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:26:08" (2/3) ... [2020-08-21 20:26:10,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645d8ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:26:10, skipping insertion in model container [2020-08-21 20:26:10,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:26:10" (3/3) ... [2020-08-21 20:26:10,215 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product42.cil.c [2020-08-21 20:26:10,226 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:26:10,234 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:26:10,248 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:26:10,272 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:26:10,273 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:26:10,273 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:26:10,273 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:26:10,273 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:26:10,274 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:26:10,274 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:26:10,274 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:26:10,297 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2020-08-21 20:26:10,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 20:26:10,306 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:26:10,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:26:10,308 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:26:10,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:26:10,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1708045389, now seen corresponding path program 1 times [2020-08-21 20:26:10,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:26:10,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012722071] [2020-08-21 20:26:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:26:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:10,959 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:26:10,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:26:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:11,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:26:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:11,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:26:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:11,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:11,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:26:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:11,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:26:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:11,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 20:26:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:11,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:26:11,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012722071] [2020-08-21 20:26:11,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:26:11,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 20:26:11,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824702233] [2020-08-21 20:26:11,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 20:26:11,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:26:11,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 20:26:11,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 20:26:11,119 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 3 states. [2020-08-21 20:26:12,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:26:12,187 INFO L93 Difference]: Finished difference Result 290 states and 375 transitions. [2020-08-21 20:26:12,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 20:26:12,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 20:26:12,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:26:12,204 INFO L225 Difference]: With dead ends: 290 [2020-08-21 20:26:12,204 INFO L226 Difference]: Without dead ends: 157 [2020-08-21 20:26:12,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 20:26:12,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-21 20:26:12,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 124. [2020-08-21 20:26:12,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-21 20:26:12,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2020-08-21 20:26:12,300 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 46 [2020-08-21 20:26:12,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:26:12,301 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2020-08-21 20:26:12,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 20:26:12,301 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2020-08-21 20:26:12,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 20:26:12,304 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:26:12,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:26:12,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:26:12,305 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:26:12,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:26:12,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1677032245, now seen corresponding path program 1 times [2020-08-21 20:26:12,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:26:12,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680820414] [2020-08-21 20:26:12,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:26:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:12,646 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:26:12,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:26:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:12,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:26:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:12,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:26:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:12,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:12,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:26:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:12,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:26:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:12,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 20:26:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:26:12,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680820414] [2020-08-21 20:26:12,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:26:12,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:26:12,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186821678] [2020-08-21 20:26:12,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:26:12,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:26:12,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:26:12,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:26:12,693 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 4 states. [2020-08-21 20:26:13,134 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:13,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:26:13,834 INFO L93 Difference]: Finished difference Result 219 states and 262 transitions. [2020-08-21 20:26:13,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 20:26:13,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 20:26:13,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:26:13,838 INFO L225 Difference]: With dead ends: 219 [2020-08-21 20:26:13,838 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 20:26:13,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 20:26:13,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 20:26:13,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 115. [2020-08-21 20:26:13,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-21 20:26:13,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 131 transitions. [2020-08-21 20:26:13,875 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 131 transitions. Word has length 47 [2020-08-21 20:26:13,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:26:13,875 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 131 transitions. [2020-08-21 20:26:13,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:26:13,876 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 131 transitions. [2020-08-21 20:26:13,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 20:26:13,877 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:26:13,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:26:13,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:26:13,878 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:26:13,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:26:13,879 INFO L82 PathProgramCache]: Analyzing trace with hash -115096576, now seen corresponding path program 1 times [2020-08-21 20:26:13,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:26:13,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998659635] [2020-08-21 20:26:13,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:26:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:14,218 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:26:14,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:26:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:14,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:26:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:14,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:26:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:14,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:14,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:26:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:14,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 20:26:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:14,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:26:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:26:14,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998659635] [2020-08-21 20:26:14,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:26:14,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 20:26:14,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972794689] [2020-08-21 20:26:14,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 20:26:14,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:26:14,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 20:26:14,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:26:14,335 INFO L87 Difference]: Start difference. First operand 115 states and 131 transitions. Second operand 8 states. [2020-08-21 20:26:14,696 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:26:14,995 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:15,263 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:15,487 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:16,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:26:16,568 INFO L93 Difference]: Finished difference Result 232 states and 280 transitions. [2020-08-21 20:26:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 20:26:16,569 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 20:26:16,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:26:16,572 INFO L225 Difference]: With dead ends: 232 [2020-08-21 20:26:16,573 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 20:26:16,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:26:16,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 20:26:16,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 115. [2020-08-21 20:26:16,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-21 20:26:16,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2020-08-21 20:26:16,607 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 52 [2020-08-21 20:26:16,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:26:16,607 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2020-08-21 20:26:16,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 20:26:16,608 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2020-08-21 20:26:16,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 20:26:16,610 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:26:16,610 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] [2020-08-21 20:26:16,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:26:16,610 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:26:16,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:26:16,611 INFO L82 PathProgramCache]: Analyzing trace with hash -721685397, now seen corresponding path program 1 times [2020-08-21 20:26:16,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:26:16,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874330233] [2020-08-21 20:26:16,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:26:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:16,857 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:26:16,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:26:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:16,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:26:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:16,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:26:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:16,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:16,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:26:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:16,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 20:26:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:16,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:16,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 20:26:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:16,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 20:26:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:26:16,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874330233] [2020-08-21 20:26:16,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:26:16,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 20:26:16,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893010946] [2020-08-21 20:26:16,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 20:26:16,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:26:16,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 20:26:16,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 20:26:16,968 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand 6 states. [2020-08-21 20:26:17,431 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:26:18,599 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:19,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:26:19,040 INFO L93 Difference]: Finished difference Result 320 states and 390 transitions. [2020-08-21 20:26:19,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 20:26:19,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-21 20:26:19,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:26:19,047 INFO L225 Difference]: With dead ends: 320 [2020-08-21 20:26:19,048 INFO L226 Difference]: Without dead ends: 229 [2020-08-21 20:26:19,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:26:19,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-08-21 20:26:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 186. [2020-08-21 20:26:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-21 20:26:19,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 211 transitions. [2020-08-21 20:26:19,095 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 211 transitions. Word has length 60 [2020-08-21 20:26:19,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:26:19,096 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 211 transitions. [2020-08-21 20:26:19,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 20:26:19,096 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 211 transitions. [2020-08-21 20:26:19,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 20:26:19,098 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:26:19,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:26:19,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:26:19,098 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:26:19,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:26:19,099 INFO L82 PathProgramCache]: Analyzing trace with hash -468283367, now seen corresponding path program 1 times [2020-08-21 20:26:19,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:26:19,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67860235] [2020-08-21 20:26:19,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:26:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:19,389 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:26:19,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:26:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:19,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:26:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:19,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:26:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:19,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:19,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:26:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:19,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 20:26:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:19,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:19,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:19,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:26:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:19,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 20:26:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:19,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 20:26:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:26:19,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67860235] [2020-08-21 20:26:19,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:26:19,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 20:26:19,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839359789] [2020-08-21 20:26:19,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:26:19,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:26:19,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:26:19,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:26:19,551 INFO L87 Difference]: Start difference. First operand 186 states and 211 transitions. Second operand 10 states. [2020-08-21 20:26:20,057 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:20,289 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:20,505 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:21,116 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:21,365 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:21,601 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:22,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:26:22,411 INFO L93 Difference]: Finished difference Result 392 states and 476 transitions. [2020-08-21 20:26:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 20:26:22,412 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-08-21 20:26:22,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:26:22,415 INFO L225 Difference]: With dead ends: 392 [2020-08-21 20:26:22,416 INFO L226 Difference]: Without dead ends: 230 [2020-08-21 20:26:22,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-21 20:26:22,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-08-21 20:26:22,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 190. [2020-08-21 20:26:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-21 20:26:22,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 215 transitions. [2020-08-21 20:26:22,477 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 215 transitions. Word has length 74 [2020-08-21 20:26:22,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:26:22,477 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 215 transitions. [2020-08-21 20:26:22,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 20:26:22,478 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 215 transitions. [2020-08-21 20:26:22,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 20:26:22,479 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:26:22,479 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] [2020-08-21 20:26:22,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:26:22,480 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:26:22,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:26:22,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1903455895, now seen corresponding path program 1 times [2020-08-21 20:26:22,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:26:22,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716700814] [2020-08-21 20:26:22,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:26:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:22,801 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:26:22,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:26:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:22,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:26:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:22,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:26:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:22,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:22,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:26:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:22,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 20:26:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:22,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:22,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:22,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:26:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:22,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 20:26:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:22,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 20:26:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:26:22,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716700814] [2020-08-21 20:26:22,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:26:22,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 20:26:22,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318975524] [2020-08-21 20:26:22,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 20:26:22,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:26:22,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 20:26:22,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:26:22,952 INFO L87 Difference]: Start difference. First operand 190 states and 215 transitions. Second operand 12 states. [2020-08-21 20:26:23,589 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:26:23,884 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:24,153 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:24,407 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:24,931 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:25,784 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:26,067 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:26:26,347 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:26:26,577 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:26,877 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:26:27,145 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:26:28,300 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:26:28,602 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:29,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:26:29,193 INFO L93 Difference]: Finished difference Result 680 states and 868 transitions. [2020-08-21 20:26:29,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 20:26:29,194 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-08-21 20:26:29,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:26:29,198 INFO L225 Difference]: With dead ends: 680 [2020-08-21 20:26:29,199 INFO L226 Difference]: Without dead ends: 514 [2020-08-21 20:26:29,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 20:26:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-08-21 20:26:29,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 452. [2020-08-21 20:26:29,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-08-21 20:26:29,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 523 transitions. [2020-08-21 20:26:29,300 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 523 transitions. Word has length 74 [2020-08-21 20:26:29,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:26:29,300 INFO L479 AbstractCegarLoop]: Abstraction has 452 states and 523 transitions. [2020-08-21 20:26:29,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 20:26:29,301 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 523 transitions. [2020-08-21 20:26:29,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 20:26:29,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:26:29,305 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:26:29,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 20:26:29,306 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:26:29,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:26:29,307 INFO L82 PathProgramCache]: Analyzing trace with hash -2107961577, now seen corresponding path program 1 times [2020-08-21 20:26:29,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:26:29,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861034501] [2020-08-21 20:26:29,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:26:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,605 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:26:29,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:26:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:26:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:26:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:26:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 20:26:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:26:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:26:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:26:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 20:26:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 20:26:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 20:26:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 20:26:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:29,833 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 20:26:29,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861034501] [2020-08-21 20:26:29,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:26:29,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 20:26:29,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729073587] [2020-08-21 20:26:29,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 20:26:29,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:26:29,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 20:26:29,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 20:26:29,836 INFO L87 Difference]: Start difference. First operand 452 states and 523 transitions. Second operand 13 states. [2020-08-21 20:26:30,313 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:26:30,899 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:26:31,418 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:31,653 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:26:31,912 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:32,139 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:32,370 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:32,625 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:26:32,925 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:33,201 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:34,554 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:34,776 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:35,002 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:35,221 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:26:35,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:26:35,624 INFO L93 Difference]: Finished difference Result 815 states and 1025 transitions. [2020-08-21 20:26:35,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 20:26:35,624 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-21 20:26:35,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:26:35,629 INFO L225 Difference]: With dead ends: 815 [2020-08-21 20:26:35,629 INFO L226 Difference]: Without dead ends: 387 [2020-08-21 20:26:35,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 20:26:35,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-08-21 20:26:35,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 333. [2020-08-21 20:26:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-08-21 20:26:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 388 transitions. [2020-08-21 20:26:35,697 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 388 transitions. Word has length 130 [2020-08-21 20:26:35,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:26:35,697 INFO L479 AbstractCegarLoop]: Abstraction has 333 states and 388 transitions. [2020-08-21 20:26:35,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 20:26:35,698 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 388 transitions. [2020-08-21 20:26:35,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 20:26:35,700 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:26:35,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:26:35,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 20:26:35,700 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:26:35,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:26:35,701 INFO L82 PathProgramCache]: Analyzing trace with hash 942189914, now seen corresponding path program 1 times [2020-08-21 20:26:35,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:26:35,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741488084] [2020-08-21 20:26:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:26:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,027 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:26:36,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:26:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:26:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:26:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:26:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 20:26:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:26:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:26:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:26:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:26:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:26:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 20:26:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 20:26:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:26:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 20:26:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 20:26:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:26:36,218 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:26:36,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741488084] [2020-08-21 20:26:36,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:26:36,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 20:26:36,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986872595] [2020-08-21 20:26:36,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 20:26:36,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:26:36,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 20:26:36,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:26:36,221 INFO L87 Difference]: Start difference. First operand 333 states and 388 transitions. Second operand 12 states. [2020-08-21 20:26:36,812 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:26:37,570 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:26:38,459 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:38,724 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:38,963 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:39,196 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:26:39,472 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:39,733 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:26:40,682 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:26:41,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:26:41,461 INFO L93 Difference]: Finished difference Result 783 states and 991 transitions. [2020-08-21 20:26:41,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 20:26:41,463 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-21 20:26:41,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:26:41,468 INFO L225 Difference]: With dead ends: 783 [2020-08-21 20:26:41,469 INFO L226 Difference]: Without dead ends: 532 [2020-08-21 20:26:41,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2020-08-21 20:26:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-21 20:26:41,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 439. [2020-08-21 20:26:41,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-08-21 20:26:41,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 520 transitions. [2020-08-21 20:26:41,560 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 520 transitions. Word has length 130 [2020-08-21 20:26:41,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:26:41,560 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 520 transitions. [2020-08-21 20:26:41,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 20:26:41,561 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 520 transitions. [2020-08-21 20:26:41,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-21 20:26:41,563 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:26:41,563 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:26:41,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 20:26:41,564 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:26:41,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:26:41,564 INFO L82 PathProgramCache]: Analyzing trace with hash 223073758, now seen corresponding path program 2 times [2020-08-21 20:26:41,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:26:41,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24749951] [2020-08-21 20:26:41,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:26:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 20:26:41,632 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 20:26:41,632 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 20:26:41,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 20:26:41,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 08:26:41 BoogieIcfgContainer [2020-08-21 20:26:41,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 20:26:41,668 INFO L168 Benchmark]: Toolchain (without parser) took 33388.73 ms. Allocated memory was 141.0 MB in the beginning and 633.9 MB in the end (delta: 492.8 MB). Free memory was 102.5 MB in the beginning and 162.3 MB in the end (delta: -59.8 MB). Peak memory consumption was 433.1 MB. Max. memory is 7.1 GB. [2020-08-21 20:26:41,669 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 20:26:41,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.53 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 102.3 MB in the beginning and 170.1 MB in the end (delta: -67.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-08-21 20:26:41,670 INFO L168 Benchmark]: Boogie Preprocessor took 86.46 ms. Allocated memory is still 203.4 MB. Free memory was 170.1 MB in the beginning and 166.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-21 20:26:41,671 INFO L168 Benchmark]: RCFGBuilder took 1169.03 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 166.3 MB in the beginning and 191.4 MB in the end (delta: -25.2 MB). Peak memory consumption was 79.7 MB. Max. memory is 7.1 GB. [2020-08-21 20:26:41,672 INFO L168 Benchmark]: TraceAbstraction took 31458.06 ms. Allocated memory was 234.4 MB in the beginning and 633.9 MB in the end (delta: 399.5 MB). Free memory was 191.4 MB in the beginning and 162.3 MB in the end (delta: 29.1 MB). Peak memory consumption was 428.7 MB. Max. memory is 7.1 GB. [2020-08-21 20:26:41,675 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 670.53 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 102.3 MB in the beginning and 170.1 MB in the end (delta: -67.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.46 ms. Allocated memory is still 203.4 MB. Free memory was 170.1 MB in the beginning and 166.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1169.03 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 166.3 MB in the beginning and 191.4 MB in the end (delta: -25.2 MB). Peak memory consumption was 79.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31458.06 ms. Allocated memory was 234.4 MB in the beginning and 633.9 MB in the end (delta: 399.5 MB). Free memory was 191.4 MB in the beginning and 162.3 MB in the end (delta: 29.1 MB). Peak memory consumption was 428.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 924]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L573] int cleanupTimeShifts = 4; [L742] int pumpRunning = 0; [L743] int systemActive = 1; [L649] int retValue_acc ; [L650] int tmp ; [L654] FCALL select_helpers() [L655] FCALL select_features() [L656] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L656] RET, EXPR valid_product() [L656] tmp = valid_product() [L658] COND TRUE \read(tmp) [L660] FCALL setup() [L661] CALL runTest() [L643] CALL test() [L674] int splverifierCounter ; [L675] int tmp ; [L676] int tmp___0 ; [L677] int tmp___1 ; [L678] int tmp___2 ; [L681] splverifierCounter = 0 [L683] COND TRUE 1 [L685] COND TRUE splverifierCounter < 4 [L691] tmp = __VERIFIER_nondet_int() [L693] COND TRUE \read(tmp) [L695] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L695] RET waterRise() [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___2)) [L719] tmp___1 = __VERIFIER_nondet_int() [L721] COND TRUE \read(tmp___1) [L728] CALL timeShift() [L749] COND FALSE !(\read(pumpRunning)) [L756] COND TRUE \read(systemActive) [L758] CALL processEnvironment() [L778] int tmp ; [L781] COND TRUE ! pumpRunning [L783] CALL, EXPR isHighWaterLevel() [L893] int retValue_acc ; [L894] int tmp ; [L895] int tmp___0 ; [L899] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L899] RET, EXPR isHighWaterSensorDry() [L899] tmp = isHighWaterSensorDry() [L901] COND FALSE !(\read(tmp)) [L904] tmp___0 = 1 [L906] retValue_acc = tmp___0 [L907] return (retValue_acc); [L783] RET, EXPR isHighWaterLevel() [L783] tmp = isHighWaterLevel() [L785] COND TRUE \read(tmp) [L787] CALL activatePump() [L812] int tmp ; [L816] CALL, EXPR isMethaneAlarm() [L837] int retValue_acc ; [L841] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L841] RET, EXPR isMethaneLevelCritical() [L841] retValue_acc = isMethaneLevelCritical() [L843] return (retValue_acc); [L816] RET, EXPR isMethaneAlarm() [L816] tmp = isMethaneAlarm() [L818] COND FALSE !(\read(tmp)) [L822] CALL activatePump__wrappee__highWaterSensor() [L806] pumpRunning = 1 [L822] RET activatePump__wrappee__highWaterSensor() [L787] RET activatePump() [L758] RET processEnvironment() [L764] CALL __utac_acc__Specification4_spec__1() [L548] int tmp ; [L549] int tmp___0 ; [L553] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L553] RET, EXPR getWaterLevel() [L553] tmp = getWaterLevel() [L555] COND FALSE !(tmp == 0) [L764] RET __utac_acc__Specification4_spec__1() [L728] RET timeShift() [L683] COND TRUE 1 [L685] COND TRUE splverifierCounter < 4 [L691] tmp = __VERIFIER_nondet_int() [L693] COND FALSE !(\read(tmp)) [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___2)) [L719] tmp___1 = __VERIFIER_nondet_int() [L721] COND TRUE \read(tmp___1) [L728] CALL timeShift() [L749] COND TRUE \read(pumpRunning) [L751] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L751] RET lowerWaterLevel() [L756] COND TRUE \read(systemActive) [L758] CALL processEnvironment() [L778] int tmp ; [L781] COND FALSE !(! pumpRunning) [L796] FCALL processEnvironment__wrappee__base() [L758] RET processEnvironment() [L764] CALL __utac_acc__Specification4_spec__1() [L548] int tmp ; [L549] int tmp___0 ; [L553] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L553] RET, EXPR getWaterLevel() [L553] tmp = getWaterLevel() [L555] COND FALSE !(tmp == 0) [L764] RET __utac_acc__Specification4_spec__1() [L728] RET timeShift() [L683] COND TRUE 1 [L685] COND TRUE splverifierCounter < 4 [L691] tmp = __VERIFIER_nondet_int() [L693] COND FALSE !(\read(tmp)) [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___2)) [L719] tmp___1 = __VERIFIER_nondet_int() [L721] COND TRUE \read(tmp___1) [L728] CALL timeShift() [L749] COND TRUE \read(pumpRunning) [L751] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L751] RET lowerWaterLevel() [L756] COND TRUE \read(systemActive) [L758] CALL processEnvironment() [L778] int tmp ; [L781] COND FALSE !(! pumpRunning) [L796] FCALL processEnvironment__wrappee__base() [L758] RET processEnvironment() [L764] CALL __utac_acc__Specification4_spec__1() [L548] int tmp ; [L549] int tmp___0 ; [L553] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L553] RET, EXPR getWaterLevel() [L553] tmp = getWaterLevel() [L555] COND TRUE tmp == 0 [L557] CALL, EXPR isPumpRunning() [L848] int retValue_acc ; [L851] retValue_acc = pumpRunning [L852] return (retValue_acc); [L557] RET, EXPR isPumpRunning() [L557] tmp___0 = isPumpRunning() [L559] COND TRUE \read(tmp___0) [L561] CALL __automaton_fail() [L924] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 226 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 31.3s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 26.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 940 SDtfs, 1885 SDslu, 1154 SDs, 0 SdLazy, 5710 SolverSat, 1261 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=452occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 377 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 779 NumberOfCodeBlocks, 779 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 605 ConstructedInterpolants, 0 QuantifiedInterpolants, 204121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 44/50 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...