/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:20:09,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:20:09,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:20:09,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:20:09,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:20:09,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:20:09,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:20:09,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:20:09,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:20:09,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:20:09,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:20:09,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:20:09,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:20:09,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:20:09,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:20:09,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:20:09,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:20:09,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:20:09,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:20:09,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:20:09,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:20:09,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:20:09,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:20:09,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:20:09,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:20:09,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:20:09,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:20:09,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:20:09,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:20:09,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:20:09,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:20:09,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:20:09,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:20:09,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:20:09,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:20:09,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:20:09,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:20:09,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:20:09,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:20:09,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:20:09,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:20:09,994 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 [2020-08-18 10:20:10,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:20:10,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:20:10,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:20:10,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:20:10,018 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:20:10,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:20:10,018 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:20:10,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:20:10,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:20:10,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:20:10,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:20:10,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:20:10,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:20:10,019 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:20:10,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:20:10,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:20:10,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:20:10,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:20:10,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:20:10,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:20:10,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:20:10,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:20:10,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:20:10,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:20:10,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:20:10,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:20:10,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:20:10,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:20:10,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:20:10,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 10:20:10,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:20:10,368 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:20:10,371 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:20:10,372 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:20:10,373 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:20:10,374 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2020-08-18 10:20:10,435 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca4c7d389/05431e1043874279a2bad6fe8f143883/FLAG0e143000c [2020-08-18 10:20:10,930 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:20:10,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2020-08-18 10:20:10,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca4c7d389/05431e1043874279a2bad6fe8f143883/FLAG0e143000c [2020-08-18 10:20:11,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca4c7d389/05431e1043874279a2bad6fe8f143883 [2020-08-18 10:20:11,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:20:11,273 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:20:11,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:20:11,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:20:11,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:20:11,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:20:11" (1/1) ... [2020-08-18 10:20:11,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd693c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:11, skipping insertion in model container [2020-08-18 10:20:11,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:20:11" (1/1) ... [2020-08-18 10:20:11,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:20:11,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:20:11,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:20:11,805 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:20:11,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:20:11,932 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:20:11,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:11 WrapperNode [2020-08-18 10:20:11,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:20:11,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:20:11,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:20:11,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:20:11,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:11" (1/1) ... [2020-08-18 10:20:11,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:11" (1/1) ... [2020-08-18 10:20:11,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:11" (1/1) ... [2020-08-18 10:20:11,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:11" (1/1) ... [2020-08-18 10:20:12,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:11" (1/1) ... [2020-08-18 10:20:12,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:11" (1/1) ... [2020-08-18 10:20:12,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:11" (1/1) ... [2020-08-18 10:20:12,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:20:12,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:20:12,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:20:12,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:20:12,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:11" (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 [2020-08-18 10:20:12,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:20:12,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:20:12,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:20:12,097 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:20:12,098 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:20:12,098 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:20:12,098 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:20:12,098 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:20:12,098 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:20:12,098 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:20:12,099 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:20:12,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:20:12,099 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:20:12,099 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:20:12,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:20:12,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:20:12,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 10:20:12,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 10:20:12,100 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:20:12,100 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:20:12,100 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:20:12,100 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:20:12,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:20:12,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:20:12,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:20:12,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:20:12,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:20:12,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:20:12,101 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:20:12,102 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:20:12,102 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:20:12,102 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:20:12,102 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:20:12,102 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:20:12,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:20:12,103 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:20:12,103 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:20:12,103 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:20:12,103 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:20:12,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:20:12,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:20:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:20:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:20:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:20:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:20:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:20:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:20:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:20:12,105 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:20:12,105 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 10:20:12,105 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:20:12,105 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:20:12,105 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:20:12,105 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:20:12,105 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:20:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:20:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:20:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:20:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:20:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:20:12,107 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:20:12,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:20:12,107 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:20:12,107 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:20:12,107 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 10:20:12,107 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:20:12,107 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:20:12,108 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:20:12,108 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:20:12,108 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:20:12,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:20:12,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:20:12,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:20:12,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:20:12,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:20:12,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:20:12,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:20:12,109 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:20:12,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:20:12,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:20:12,110 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:20:12,110 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:20:12,110 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:20:12,110 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:20:12,110 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:20:12,110 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:20:12,111 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:20:12,111 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:20:12,111 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:20:12,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:20:12,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:20:12,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:20:13,172 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:20:13,172 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:20:13,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:20:13 BoogieIcfgContainer [2020-08-18 10:20:13,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:20:13,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:20:13,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:20:13,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:20:13,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:20:11" (1/3) ... [2020-08-18 10:20:13,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abbd3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:20:13, skipping insertion in model container [2020-08-18 10:20:13,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:11" (2/3) ... [2020-08-18 10:20:13,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abbd3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:20:13, skipping insertion in model container [2020-08-18 10:20:13,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:20:13" (3/3) ... [2020-08-18 10:20:13,187 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product34.cil.c [2020-08-18 10:20:13,198 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:20:13,207 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:20:13,221 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:20:13,248 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:20:13,249 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:20:13,249 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:20:13,249 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:20:13,249 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:20:13,249 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:20:13,250 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:20:13,250 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:20:13,273 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-18 10:20:13,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 10:20:13,283 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:13,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:13,285 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:13,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:13,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1720198034, now seen corresponding path program 1 times [2020-08-18 10:20:13,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:13,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371492076] [2020-08-18 10:20:13,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:13,957 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:13,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:14,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:14,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:14,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:14,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:14,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:20:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:14,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 10:20:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:14,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371492076] [2020-08-18 10:20:14,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:14,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:20:14,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187308978] [2020-08-18 10:20:14,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:20:14,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:14,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:20:14,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:20:14,101 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 4 states. [2020-08-18 10:20:15,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:15,123 INFO L93 Difference]: Finished difference Result 258 states and 340 transitions. [2020-08-18 10:20:15,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 10:20:15,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 10:20:15,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:15,140 INFO L225 Difference]: With dead ends: 258 [2020-08-18 10:20:15,140 INFO L226 Difference]: Without dead ends: 145 [2020-08-18 10:20:15,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:20:15,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-18 10:20:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 114. [2020-08-18 10:20:15,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 10:20:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-18 10:20:15,266 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 51 [2020-08-18 10:20:15,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:15,267 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-18 10:20:15,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:20:15,267 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-18 10:20:15,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:20:15,271 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:15,271 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] [2020-08-18 10:20:15,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:20:15,271 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:15,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:15,272 INFO L82 PathProgramCache]: Analyzing trace with hash 220132220, now seen corresponding path program 1 times [2020-08-18 10:20:15,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:15,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361953664] [2020-08-18 10:20:15,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:15,610 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:15,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:15,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:15,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:15,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:15,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:15,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:15,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:20:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:15,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:20:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:15,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361953664] [2020-08-18 10:20:15,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:15,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 10:20:15,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065615488] [2020-08-18 10:20:15,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 10:20:15,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:15,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 10:20:15,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:20:15,684 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 5 states. [2020-08-18 10:20:16,114 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:16,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:16,814 INFO L93 Difference]: Finished difference Result 199 states and 247 transitions. [2020-08-18 10:20:16,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 10:20:16,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 10:20:16,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:16,817 INFO L225 Difference]: With dead ends: 199 [2020-08-18 10:20:16,817 INFO L226 Difference]: Without dead ends: 135 [2020-08-18 10:20:16,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:20:16,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-18 10:20:16,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-18 10:20:16,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 10:20:16,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-08-18 10:20:16,851 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 52 [2020-08-18 10:20:16,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:16,851 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-08-18 10:20:16,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 10:20:16,851 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-08-18 10:20:16,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 10:20:16,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:16,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:16,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:20:16,854 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:16,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:16,855 INFO L82 PathProgramCache]: Analyzing trace with hash 889380391, now seen corresponding path program 1 times [2020-08-18 10:20:16,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:16,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138977877] [2020-08-18 10:20:16,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:17,208 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:17,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:17,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:17,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:17,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:17,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:17,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 10:20:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:17,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 10:20:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:17,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138977877] [2020-08-18 10:20:17,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:17,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:20:17,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817600617] [2020-08-18 10:20:17,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:20:17,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:17,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:20:17,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:20:17,329 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 9 states. [2020-08-18 10:20:17,697 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:20:18,015 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:18,246 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:18,504 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:19,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:19,510 INFO L93 Difference]: Finished difference Result 212 states and 266 transitions. [2020-08-18 10:20:19,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 10:20:19,516 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 10:20:19,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:19,518 INFO L225 Difference]: With dead ends: 212 [2020-08-18 10:20:19,519 INFO L226 Difference]: Without dead ends: 135 [2020-08-18 10:20:19,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:20:19,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-18 10:20:19,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-18 10:20:19,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 10:20:19,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2020-08-18 10:20:19,554 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 57 [2020-08-18 10:20:19,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:19,555 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2020-08-18 10:20:19,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:20:19,555 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2020-08-18 10:20:19,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 10:20:19,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:19,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:19,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:20:19,557 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:19,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:19,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1390934310, now seen corresponding path program 1 times [2020-08-18 10:20:19,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:19,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580810724] [2020-08-18 10:20:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:19,851 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:19,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:19,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:19,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:19,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:19,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:19,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:19,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:20:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:19,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:19,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:20:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:19,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 10:20:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:19,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580810724] [2020-08-18 10:20:19,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:19,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 10:20:19,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532451577] [2020-08-18 10:20:19,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 10:20:19,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:19,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 10:20:19,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:20:19,933 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 7 states. [2020-08-18 10:20:20,242 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:20:21,444 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:21,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:21,966 INFO L93 Difference]: Finished difference Result 302 states and 382 transitions. [2020-08-18 10:20:21,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 10:20:21,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-08-18 10:20:21,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:21,970 INFO L225 Difference]: With dead ends: 302 [2020-08-18 10:20:21,970 INFO L226 Difference]: Without dead ends: 225 [2020-08-18 10:20:21,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:20:21,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-18 10:20:22,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 176. [2020-08-18 10:20:22,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-18 10:20:22,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 203 transitions. [2020-08-18 10:20:22,016 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 203 transitions. Word has length 65 [2020-08-18 10:20:22,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:22,017 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 203 transitions. [2020-08-18 10:20:22,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 10:20:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 203 transitions. [2020-08-18 10:20:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 10:20:22,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:22,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:22,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:20:22,019 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:22,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:22,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1075030192, now seen corresponding path program 1 times [2020-08-18 10:20:22,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:22,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138622244] [2020-08-18 10:20:22,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:22,318 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:22,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:22,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:22,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:22,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:22,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:22,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:22,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:20:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:22,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:22,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:20:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:22,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:20:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:22,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 10:20:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:22,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:20:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:22,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:22,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138622244] [2020-08-18 10:20:22,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:22,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:20:22,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416714336] [2020-08-18 10:20:22,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:20:22,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:22,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:20:22,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:20:22,485 INFO L87 Difference]: Start difference. First operand 176 states and 203 transitions. Second operand 12 states. [2020-08-18 10:20:22,947 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:23,202 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:23,459 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:24,216 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:24,484 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:20:24,759 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:25,027 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:25,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:25,832 INFO L93 Difference]: Finished difference Result 372 states and 462 transitions. [2020-08-18 10:20:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 10:20:25,834 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-18 10:20:25,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:25,838 INFO L225 Difference]: With dead ends: 372 [2020-08-18 10:20:25,838 INFO L226 Difference]: Without dead ends: 224 [2020-08-18 10:20:25,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 10:20:25,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-08-18 10:20:25,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 181. [2020-08-18 10:20:25,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-08-18 10:20:25,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 208 transitions. [2020-08-18 10:20:25,890 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 208 transitions. Word has length 79 [2020-08-18 10:20:25,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:25,891 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 208 transitions. [2020-08-18 10:20:25,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:20:25,891 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 208 transitions. [2020-08-18 10:20:25,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 10:20:25,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:25,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:25,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:20:25,893 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:25,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:25,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1584503282, now seen corresponding path program 1 times [2020-08-18 10:20:25,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:25,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113795187] [2020-08-18 10:20:25,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:26,302 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:26,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:26,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:26,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:26,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:26,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:26,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:20:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:26,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:26,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:20:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:26,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:20:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:26,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 10:20:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:26,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:20:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:26,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113795187] [2020-08-18 10:20:26,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:26,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:20:26,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420002321] [2020-08-18 10:20:26,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:20:26,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:26,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:20:26,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:20:26,438 INFO L87 Difference]: Start difference. First operand 181 states and 208 transitions. Second operand 9 states. [2020-08-18 10:20:26,784 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:20:28,000 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:28,285 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:28,534 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:28,765 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:20:29,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:29,607 INFO L93 Difference]: Finished difference Result 539 states and 685 transitions. [2020-08-18 10:20:29,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 10:20:29,607 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-18 10:20:29,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:29,612 INFO L225 Difference]: With dead ends: 539 [2020-08-18 10:20:29,612 INFO L226 Difference]: Without dead ends: 386 [2020-08-18 10:20:29,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 10:20:29,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-08-18 10:20:29,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 310. [2020-08-18 10:20:29,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-08-18 10:20:29,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 356 transitions. [2020-08-18 10:20:29,677 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 356 transitions. Word has length 79 [2020-08-18 10:20:29,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:29,677 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 356 transitions. [2020-08-18 10:20:29,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:20:29,677 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 356 transitions. [2020-08-18 10:20:29,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 10:20:29,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:29,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:29,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:20:29,680 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:29,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:29,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1898506966, now seen corresponding path program 1 times [2020-08-18 10:20:29,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:29,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161049712] [2020-08-18 10:20:29,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:30,012 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:30,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:30,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:30,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:30,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:30,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:30,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:30,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:20:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:30,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:20:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:30,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:30,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:20:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:30,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:20:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:30,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 10:20:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:30,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 10:20:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:30,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161049712] [2020-08-18 10:20:30,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:30,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 10:20:30,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537434630] [2020-08-18 10:20:30,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:20:30,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:30,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:20:30,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:20:30,149 INFO L87 Difference]: Start difference. First operand 310 states and 356 transitions. Second operand 10 states. [2020-08-18 10:20:30,523 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:20:31,682 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:31,919 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:20:32,176 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:32,454 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:33,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:33,453 INFO L93 Difference]: Finished difference Result 706 states and 881 transitions. [2020-08-18 10:20:33,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 10:20:33,453 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-18 10:20:33,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:33,458 INFO L225 Difference]: With dead ends: 706 [2020-08-18 10:20:33,458 INFO L226 Difference]: Without dead ends: 424 [2020-08-18 10:20:33,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-08-18 10:20:33,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-08-18 10:20:33,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 309. [2020-08-18 10:20:33,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-18 10:20:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 353 transitions. [2020-08-18 10:20:33,525 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 353 transitions. Word has length 83 [2020-08-18 10:20:33,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:33,525 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 353 transitions. [2020-08-18 10:20:33,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:20:33,526 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 353 transitions. [2020-08-18 10:20:33,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 10:20:33,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:33,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:33,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:20:33,528 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:33,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:33,528 INFO L82 PathProgramCache]: Analyzing trace with hash -226819900, now seen corresponding path program 1 times [2020-08-18 10:20:33,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:33,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738580173] [2020-08-18 10:20:33,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:33,819 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:33,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:33,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:33,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:33,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:33,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:33,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:33,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:20:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:33,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:20:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:33,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:33,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:20:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:33,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:20:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:33,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 10:20:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:33,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 10:20:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:33,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738580173] [2020-08-18 10:20:33,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:33,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:20:33,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187731596] [2020-08-18 10:20:33,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:20:33,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:33,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:20:33,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:20:33,965 INFO L87 Difference]: Start difference. First operand 309 states and 353 transitions. Second operand 12 states. [2020-08-18 10:20:34,449 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:34,713 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:34,950 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:35,612 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:35,863 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:36,114 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:36,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:36,937 INFO L93 Difference]: Finished difference Result 713 states and 897 transitions. [2020-08-18 10:20:36,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 10:20:36,938 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-18 10:20:36,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:36,942 INFO L225 Difference]: With dead ends: 713 [2020-08-18 10:20:36,942 INFO L226 Difference]: Without dead ends: 432 [2020-08-18 10:20:36,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 10:20:36,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-08-18 10:20:37,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 317. [2020-08-18 10:20:37,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-08-18 10:20:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 361 transitions. [2020-08-18 10:20:37,027 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 361 transitions. Word has length 84 [2020-08-18 10:20:37,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:37,027 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 361 transitions. [2020-08-18 10:20:37,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:20:37,027 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 361 transitions. [2020-08-18 10:20:37,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 10:20:37,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:37,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:37,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:20:37,030 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:37,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:37,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1613023294, now seen corresponding path program 1 times [2020-08-18 10:20:37,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:37,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389726367] [2020-08-18 10:20:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,293 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:37,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:20:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:20:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:20:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:20:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 10:20:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 10:20:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:37,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389726367] [2020-08-18 10:20:37,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:37,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 10:20:37,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357219555] [2020-08-18 10:20:37,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:20:37,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:37,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:20:37,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:20:37,427 INFO L87 Difference]: Start difference. First operand 317 states and 361 transitions. Second operand 10 states. [2020-08-18 10:20:38,332 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:38,570 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:20:38,842 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:39,074 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:39,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:39,933 INFO L93 Difference]: Finished difference Result 715 states and 895 transitions. [2020-08-18 10:20:39,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 10:20:39,934 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-18 10:20:39,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:39,937 INFO L225 Difference]: With dead ends: 715 [2020-08-18 10:20:39,938 INFO L226 Difference]: Without dead ends: 426 [2020-08-18 10:20:39,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:20:39,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-18 10:20:40,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 317. [2020-08-18 10:20:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-08-18 10:20:40,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 359 transitions. [2020-08-18 10:20:40,024 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 359 transitions. Word has length 84 [2020-08-18 10:20:40,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:40,028 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 359 transitions. [2020-08-18 10:20:40,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:20:40,028 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 359 transitions. [2020-08-18 10:20:40,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 10:20:40,034 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:40,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:40,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:20:40,035 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:40,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:40,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1884470469, now seen corresponding path program 1 times [2020-08-18 10:20:40,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:40,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545713505] [2020-08-18 10:20:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:40,301 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:40,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:40,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:40,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:40,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:40,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:40,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:40,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:20:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:40,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:20:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:40,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:40,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:20:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:40,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:20:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:40,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 10:20:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:40,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 10:20:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:40,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545713505] [2020-08-18 10:20:40,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:40,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:20:40,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149528055] [2020-08-18 10:20:40,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:20:40,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:40,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:20:40,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:20:40,425 INFO L87 Difference]: Start difference. First operand 317 states and 359 transitions. Second operand 8 states. [2020-08-18 10:20:40,938 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:20:41,775 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:20:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:44,128 INFO L93 Difference]: Finished difference Result 1041 states and 1362 transitions. [2020-08-18 10:20:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 10:20:44,128 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-18 10:20:44,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:44,134 INFO L225 Difference]: With dead ends: 1041 [2020-08-18 10:20:44,135 INFO L226 Difference]: Without dead ends: 752 [2020-08-18 10:20:44,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-18 10:20:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2020-08-18 10:20:44,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 607. [2020-08-18 10:20:44,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-08-18 10:20:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 711 transitions. [2020-08-18 10:20:44,291 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 711 transitions. Word has length 84 [2020-08-18 10:20:44,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:44,291 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 711 transitions. [2020-08-18 10:20:44,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:20:44,291 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 711 transitions. [2020-08-18 10:20:44,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 10:20:44,295 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:44,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:44,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:20:44,296 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:44,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:44,296 INFO L82 PathProgramCache]: Analyzing trace with hash 713728159, now seen corresponding path program 1 times [2020-08-18 10:20:44,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:44,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835644606] [2020-08-18 10:20:44,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,611 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:44,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:20:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:20:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 10:20:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:20:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:20:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 10:20:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 10:20:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:44,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835644606] [2020-08-18 10:20:44,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:44,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:20:44,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83371724] [2020-08-18 10:20:44,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:20:44,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:44,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:20:44,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:20:44,711 INFO L87 Difference]: Start difference. First operand 607 states and 711 transitions. Second operand 8 states. [2020-08-18 10:20:45,012 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:20:46,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:46,909 INFO L93 Difference]: Finished difference Result 1199 states and 1560 transitions. [2020-08-18 10:20:46,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 10:20:46,912 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-18 10:20:46,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:46,920 INFO L225 Difference]: With dead ends: 1199 [2020-08-18 10:20:46,920 INFO L226 Difference]: Without dead ends: 1196 [2020-08-18 10:20:46,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-18 10:20:46,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2020-08-18 10:20:47,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 975. [2020-08-18 10:20:47,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-08-18 10:20:47,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1150 transitions. [2020-08-18 10:20:47,137 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1150 transitions. Word has length 88 [2020-08-18 10:20:47,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:47,137 INFO L479 AbstractCegarLoop]: Abstraction has 975 states and 1150 transitions. [2020-08-18 10:20:47,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:20:47,138 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1150 transitions. [2020-08-18 10:20:47,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-18 10:20:47,141 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:47,141 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:47,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 10:20:47,142 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:47,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:47,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1128183326, now seen corresponding path program 1 times [2020-08-18 10:20:47,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:47,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865500720] [2020-08-18 10:20:47,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:20:47,207 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:20:47,207 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:20:47,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 10:20:47,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:20:47 BoogieIcfgContainer [2020-08-18 10:20:47,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:20:47,261 INFO L168 Benchmark]: Toolchain (without parser) took 35987.23 ms. Allocated memory was 138.4 MB in the beginning and 673.7 MB in the end (delta: 535.3 MB). Free memory was 100.4 MB in the beginning and 253.4 MB in the end (delta: -153.0 MB). Peak memory consumption was 382.3 MB. Max. memory is 7.1 GB. [2020-08-18 10:20:47,265 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-08-18 10:20:47,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.26 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.4 MB in the beginning and 171.8 MB in the end (delta: -71.4 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-08-18 10:20:47,269 INFO L168 Benchmark]: Boogie Preprocessor took 96.03 ms. Allocated memory is still 201.9 MB. Free memory was 171.8 MB in the beginning and 167.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-18 10:20:47,271 INFO L168 Benchmark]: RCFGBuilder took 1147.57 ms. Allocated memory was 201.9 MB in the beginning and 233.3 MB in the end (delta: 31.5 MB). Free memory was 167.6 MB in the beginning and 198.5 MB in the end (delta: -30.8 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. [2020-08-18 10:20:47,271 INFO L168 Benchmark]: TraceAbstraction took 34078.55 ms. Allocated memory was 233.3 MB in the beginning and 673.7 MB in the end (delta: 440.4 MB). Free memory was 198.5 MB in the beginning and 253.4 MB in the end (delta: -55.0 MB). Peak memory consumption was 385.4 MB. Max. memory is 7.1 GB. [2020-08-18 10:20:47,279 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 659.26 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.4 MB in the beginning and 171.8 MB in the end (delta: -71.4 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.03 ms. Allocated memory is still 201.9 MB. Free memory was 171.8 MB in the beginning and 167.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1147.57 ms. Allocated memory was 201.9 MB in the beginning and 233.3 MB in the end (delta: 31.5 MB). Free memory was 167.6 MB in the beginning and 198.5 MB in the end (delta: -30.8 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34078.55 ms. Allocated memory was 233.3 MB in the beginning and 673.7 MB in the end (delta: 440.4 MB). Free memory was 198.5 MB in the beginning and 253.4 MB in the end (delta: -55.0 MB). Peak memory consumption was 385.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 249]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L151] int waterLevel = 1; [L152] int methaneLevelCritical = 0; [L255] int methAndRunningLastTime ; [L498] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L765] int pumpRunning = 0; [L766] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L320] int retValue_acc ; [L323] retValue_acc = 1 [L324] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L113] CALL __utac_acc__Specification2_spec__1() [L260] methAndRunningLastTime = 0 [L113] RET __utac_acc__Specification2_spec__1() [L114] CALL test() [L697] int splverifierCounter ; [L698] int tmp ; [L699] int tmp___0 ; [L700] int tmp___1 ; [L701] int tmp___2 ; [L704] splverifierCounter = 0 [L706] COND TRUE 1 [L708] COND TRUE splverifierCounter < 4 [L714] tmp = __VERIFIER_nondet_int() [L716] COND TRUE \read(tmp) [L718] CALL waterRise() [L169] COND TRUE waterLevel < 2 [L170] waterLevel = waterLevel + 1 [L718] RET waterRise() [L724] tmp___0 = __VERIFIER_nondet_int() [L726] COND TRUE \read(tmp___0) [L728] CALL changeMethaneLevel() [L181] COND FALSE !(\read(methaneLevelCritical)) [L184] methaneLevelCritical = 1 [L728] RET changeMethaneLevel() [L734] tmp___2 = __VERIFIER_nondet_int() [L736] COND FALSE !(\read(tmp___2)) [L742] tmp___1 = __VERIFIER_nondet_int() [L744] COND TRUE \read(tmp___1) [L751] CALL timeShift() [L772] COND FALSE !(\read(pumpRunning)) [L779] COND TRUE \read(systemActive) [L781] CALL processEnvironment() [L801] int tmp ; [L804] COND TRUE ! pumpRunning [L806] CALL, EXPR isHighWaterLevel() [L898] int retValue_acc ; [L899] int tmp ; [L900] int tmp___0 ; [L904] CALL, EXPR isHighWaterSensorDry() [L231] int retValue_acc ; [L234] COND FALSE !(waterLevel < 2) [L238] retValue_acc = 0 [L239] return (retValue_acc); [L904] RET, EXPR isHighWaterSensorDry() [L904] tmp = isHighWaterSensorDry() [L906] COND FALSE !(\read(tmp)) [L909] tmp___0 = 1 [L911] retValue_acc = tmp___0 [L912] return (retValue_acc); [L806] RET, EXPR isHighWaterLevel() [L806] tmp = isHighWaterLevel() [L808] COND TRUE \read(tmp) [L810] CALL activatePump() [L829] pumpRunning = 1 [L810] RET activatePump() [L781] RET processEnvironment() [L787] CALL __utac_acc__Specification2_spec__2() [L265] int tmp ; [L266] int tmp___0 ; [L270] CALL, EXPR isMethaneLevelCritical() [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L270] RET, EXPR isMethaneLevelCritical() [L270] tmp = isMethaneLevelCritical() [L272] COND TRUE \read(tmp) [L274] CALL, EXPR isPumpRunning() [L853] int retValue_acc ; [L856] retValue_acc = pumpRunning [L857] return (retValue_acc); [L274] RET, EXPR isPumpRunning() [L274] tmp___0 = isPumpRunning() [L276] COND TRUE \read(tmp___0) [L277] COND FALSE !(\read(methAndRunningLastTime)) [L282] methAndRunningLastTime = 1 [L787] RET __utac_acc__Specification2_spec__2() [L751] RET timeShift() [L706] COND TRUE 1 [L708] COND TRUE splverifierCounter < 4 [L714] tmp = __VERIFIER_nondet_int() [L716] COND FALSE !(\read(tmp)) [L724] tmp___0 = __VERIFIER_nondet_int() [L726] COND FALSE !(\read(tmp___0)) [L734] tmp___2 = __VERIFIER_nondet_int() [L736] COND FALSE !(\read(tmp___2)) [L742] tmp___1 = __VERIFIER_nondet_int() [L744] COND TRUE \read(tmp___1) [L751] CALL timeShift() [L772] COND TRUE \read(pumpRunning) [L774] CALL lowerWaterLevel() [L157] COND TRUE waterLevel > 0 [L158] waterLevel = waterLevel - 1 [L774] RET lowerWaterLevel() [L779] COND TRUE \read(systemActive) [L781] CALL processEnvironment() [L801] int tmp ; [L804] COND FALSE !(! pumpRunning) [L819] FCALL processEnvironment__wrappee__base() [L781] RET processEnvironment() [L787] CALL __utac_acc__Specification2_spec__2() [L265] int tmp ; [L266] int tmp___0 ; [L270] CALL, EXPR isMethaneLevelCritical() [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L270] RET, EXPR isMethaneLevelCritical() [L270] tmp = isMethaneLevelCritical() [L272] COND TRUE \read(tmp) [L274] CALL, EXPR isPumpRunning() [L853] int retValue_acc ; [L856] retValue_acc = pumpRunning [L857] return (retValue_acc); [L274] RET, EXPR isPumpRunning() [L274] tmp___0 = isPumpRunning() [L276] COND TRUE \read(tmp___0) [L277] COND TRUE \read(methAndRunningLastTime) [L279] CALL __automaton_fail() [L249] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 224 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.9s, OverallIterations: 12, TraceHistogramMax: 2, AutomataDifference: 27.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1105 SDtfs, 3134 SDslu, 1473 SDs, 0 SdLazy, 6121 SolverSat, 2321 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 464 GetRequests, 288 SyntacticMatches, 3 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=975occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 964 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 937 NumberOfCodeBlocks, 937 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 795 ConstructedInterpolants, 0 QuantifiedInterpolants, 249077 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...