/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:29:22,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:29:22,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:29:22,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:29:22,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:29:22,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:29:22,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:29:22,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:29:22,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:29:22,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:29:22,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:29:22,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:29:22,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:29:22,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:29:22,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:29:22,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:29:22,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:29:22,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:29:22,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:29:22,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:29:22,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:29:22,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:29:22,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:29:22,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:29:23,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:29:23,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:29:23,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:29:23,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:29:23,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:29:23,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:29:23,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:29:23,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:29:23,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:29:23,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:29:23,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:29:23,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:29:23,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:29:23,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:29:23,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:29:23,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:29:23,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:29:23,026 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 22:29:23,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:29:23,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:29:23,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:29:23,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:29:23,067 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:29:23,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:29:23,068 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:29:23,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:29:23,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:29:23,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:29:23,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:29:23,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:29:23,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:29:23,069 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:29:23,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:29:23,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:29:23,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:29:23,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:29:23,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:29:23,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:29:23,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:29:23,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:29:23,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:29:23,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:29:23,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:29:23,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:29:23,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:29:23,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:29:23,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:29:23,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:29:23,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:29:23,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:29:23,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:29:23,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:29:23,358 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:29:23,358 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-08-18 22:29:23,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95bb585ae/4092edc422fc4a78b7359b56a9847a89/FLAG26488ab6e [2020-08-18 22:29:23,915 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:29:23,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-08-18 22:29:23,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95bb585ae/4092edc422fc4a78b7359b56a9847a89/FLAG26488ab6e [2020-08-18 22:29:24,275 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95bb585ae/4092edc422fc4a78b7359b56a9847a89 [2020-08-18 22:29:24,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:29:24,286 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:29:24,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:29:24,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:29:24,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:29:24,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:29:24" (1/1) ... [2020-08-18 22:29:24,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:24, skipping insertion in model container [2020-08-18 22:29:24,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:29:24" (1/1) ... [2020-08-18 22:29:24,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:29:24,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:29:24,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:29:24,783 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:29:24,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:29:24,973 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:29:24,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:24 WrapperNode [2020-08-18 22:29:24,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:29:24,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:29:24,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:29:24,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:29:24,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:24" (1/1) ... [2020-08-18 22:29:24,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:24" (1/1) ... [2020-08-18 22:29:25,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:24" (1/1) ... [2020-08-18 22:29:25,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:24" (1/1) ... [2020-08-18 22:29:25,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:24" (1/1) ... [2020-08-18 22:29:25,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:24" (1/1) ... [2020-08-18 22:29:25,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:24" (1/1) ... [2020-08-18 22:29:25,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:29:25,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:29:25,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:29:25,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:29:25,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:24" (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 22:29:25,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:29:25,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:29:25,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 22:29:25,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 22:29:25,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 22:29:25,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 22:29:25,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 22:29:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 22:29:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 22:29:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 22:29:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 22:29:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 22:29:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 22:29:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 22:29:25,132 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 22:29:25,132 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 22:29:25,132 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 22:29:25,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 22:29:25,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 22:29:25,133 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 22:29:25,133 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 22:29:25,133 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 22:29:25,133 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 22:29:25,133 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 22:29:25,133 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 22:29:25,134 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 22:29:25,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 22:29:25,134 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 22:29:25,134 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 22:29:25,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 22:29:25,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 22:29:25,134 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 22:29:25,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 22:29:25,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 22:29:25,135 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 22:29:25,135 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 22:29:25,135 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 22:29:25,136 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 22:29:25,136 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 22:29:25,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:29:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:29:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:29:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 22:29:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 22:29:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 22:29:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:29:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:29:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 22:29:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:29:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:29:25,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:29:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:29:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 22:29:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:29:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 22:29:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 22:29:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:29:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 22:29:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 22:29:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:29:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 22:29:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 22:29:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 22:29:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 22:29:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 22:29:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 22:29:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 22:29:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 22:29:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 22:29:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 22:29:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 22:29:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 22:29:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 22:29:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 22:29:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 22:29:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 22:29:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 22:29:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 22:29:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 22:29:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 22:29:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 22:29:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 22:29:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 22:29:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 22:29:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 22:29:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 22:29:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 22:29:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 22:29:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 22:29:25,144 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 22:29:25,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:29:25,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:29:25,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:29:25,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:29:26,203 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:29:26,204 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 22:29:26,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:29:26 BoogieIcfgContainer [2020-08-18 22:29:26,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:29:26,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:29:26,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:29:26,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:29:26,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:29:24" (1/3) ... [2020-08-18 22:29:26,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ae4be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:29:26, skipping insertion in model container [2020-08-18 22:29:26,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:24" (2/3) ... [2020-08-18 22:29:26,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ae4be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:29:26, skipping insertion in model container [2020-08-18 22:29:26,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:29:26" (3/3) ... [2020-08-18 22:29:26,222 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2020-08-18 22:29:26,233 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:29:26,244 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:29:26,258 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:29:26,282 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:29:26,282 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:29:26,282 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:29:26,282 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:29:26,282 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:29:26,283 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:29:26,283 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:29:26,283 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:29:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-08-18 22:29:26,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 22:29:26,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:26,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:29:26,315 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:26,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:26,322 INFO L82 PathProgramCache]: Analyzing trace with hash -325582978, now seen corresponding path program 1 times [2020-08-18 22:29:26,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:26,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617705926] [2020-08-18 22:29:26,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:26,931 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:26,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:27,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:27,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:27,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:27,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:27,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:29:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:27,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:29:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:27,065 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 22:29:27,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617705926] [2020-08-18 22:29:27,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:27,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:29:27,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069937371] [2020-08-18 22:29:27,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:29:27,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:27,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:29:27,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:29:27,095 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2020-08-18 22:29:28,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:28,229 INFO L93 Difference]: Finished difference Result 304 states and 394 transitions. [2020-08-18 22:29:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:29:28,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 22:29:28,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:28,247 INFO L225 Difference]: With dead ends: 304 [2020-08-18 22:29:28,247 INFO L226 Difference]: Without dead ends: 165 [2020-08-18 22:29:28,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:29:28,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-18 22:29:28,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 130. [2020-08-18 22:29:28,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 22:29:28,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-18 22:29:28,347 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 46 [2020-08-18 22:29:28,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:28,347 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-18 22:29:28,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:29:28,348 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-18 22:29:28,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 22:29:28,351 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:28,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:29:28,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:29:28,352 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:28,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:28,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1889235753, now seen corresponding path program 1 times [2020-08-18 22:29:28,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:28,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578069973] [2020-08-18 22:29:28,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:28,743 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:28,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:28,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:28,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:28,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:28,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:28,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:29:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:28,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:29:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:28,785 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 22:29:28,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578069973] [2020-08-18 22:29:28,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:28,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:29:28,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457076380] [2020-08-18 22:29:28,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:29:28,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:28,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:29:28,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:29:28,789 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 4 states. [2020-08-18 22:29:29,216 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:30,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:30,073 INFO L93 Difference]: Finished difference Result 224 states and 271 transitions. [2020-08-18 22:29:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:29:30,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 22:29:30,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:30,079 INFO L225 Difference]: With dead ends: 224 [2020-08-18 22:29:30,079 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 22:29:30,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:29:30,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 22:29:30,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 121. [2020-08-18 22:29:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-18 22:29:30,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-08-18 22:29:30,122 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 47 [2020-08-18 22:29:30,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:30,122 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-08-18 22:29:30,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:29:30,123 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-08-18 22:29:30,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 22:29:30,125 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:30,125 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 22:29:30,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:29:30,125 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:30,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:30,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1400660330, now seen corresponding path program 1 times [2020-08-18 22:29:30,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:30,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746027699] [2020-08-18 22:29:30,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:30,467 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:30,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:30,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:30,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:30,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:30,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:29:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:30,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:29:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:30,530 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 22:29:30,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746027699] [2020-08-18 22:29:30,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:30,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:29:30,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027584360] [2020-08-18 22:29:30,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:29:30,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:30,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:29:30,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:29:30,533 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 8 states. [2020-08-18 22:29:30,906 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:29:31,217 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:31,472 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:31,711 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:32,427 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:34,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:34,199 INFO L93 Difference]: Finished difference Result 418 states and 512 transitions. [2020-08-18 22:29:34,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:29:34,201 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 22:29:34,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:34,205 INFO L225 Difference]: With dead ends: 418 [2020-08-18 22:29:34,205 INFO L226 Difference]: Without dead ends: 321 [2020-08-18 22:29:34,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:29:34,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-08-18 22:29:34,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 244. [2020-08-18 22:29:34,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-18 22:29:34,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 290 transitions. [2020-08-18 22:29:34,271 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 290 transitions. Word has length 52 [2020-08-18 22:29:34,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:34,271 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 290 transitions. [2020-08-18 22:29:34,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:29:34,272 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 290 transitions. [2020-08-18 22:29:34,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 22:29:34,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:34,275 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 22:29:34,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:29:34,275 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:34,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:34,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1567525845, now seen corresponding path program 1 times [2020-08-18 22:29:34,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:34,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327210611] [2020-08-18 22:29:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:34,567 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:34,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:34,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:34,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:34,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:34,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:34,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:29:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:34,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:29:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:34,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 22:29:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:34,652 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 22:29:34,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327210611] [2020-08-18 22:29:34,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:34,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:29:34,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433276766] [2020-08-18 22:29:34,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:29:34,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:34,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:29:34,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:29:34,655 INFO L87 Difference]: Start difference. First operand 244 states and 290 transitions. Second operand 8 states. [2020-08-18 22:29:35,005 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:29:36,042 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:36,339 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:36,630 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:36,864 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:29:37,227 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:38,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:38,238 INFO L93 Difference]: Finished difference Result 793 states and 1017 transitions. [2020-08-18 22:29:38,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:29:38,239 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 22:29:38,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:38,247 INFO L225 Difference]: With dead ends: 793 [2020-08-18 22:29:38,247 INFO L226 Difference]: Without dead ends: 573 [2020-08-18 22:29:38,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:29:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-18 22:29:38,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 443. [2020-08-18 22:29:38,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-18 22:29:38,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 530 transitions. [2020-08-18 22:29:38,360 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 530 transitions. Word has length 57 [2020-08-18 22:29:38,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:38,361 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 530 transitions. [2020-08-18 22:29:38,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:29:38,361 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 530 transitions. [2020-08-18 22:29:38,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 22:29:38,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:38,365 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] [2020-08-18 22:29:38,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:29:38,365 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:38,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:38,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1743298223, now seen corresponding path program 1 times [2020-08-18 22:29:38,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:38,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272698739] [2020-08-18 22:29:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:38,697 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:38,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:38,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:38,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:38,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:38,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:38,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 22:29:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:38,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:29:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:38,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:29:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:38,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 22:29:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:38,806 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 22:29:38,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272698739] [2020-08-18 22:29:38,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:38,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:29:38,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027043984] [2020-08-18 22:29:38,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:29:38,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:38,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:29:38,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:29:38,809 INFO L87 Difference]: Start difference. First operand 443 states and 530 transitions. Second operand 9 states. [2020-08-18 22:29:39,200 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:29:40,208 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:40,518 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:40,773 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:41,421 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:29:41,699 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:42,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:42,580 INFO L93 Difference]: Finished difference Result 1254 states and 1644 transitions. [2020-08-18 22:29:42,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 22:29:42,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-18 22:29:42,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:42,589 INFO L225 Difference]: With dead ends: 1254 [2020-08-18 22:29:42,589 INFO L226 Difference]: Without dead ends: 835 [2020-08-18 22:29:42,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 22:29:42,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-08-18 22:29:42,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 671. [2020-08-18 22:29:42,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-08-18 22:29:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 815 transitions. [2020-08-18 22:29:42,740 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 815 transitions. Word has length 61 [2020-08-18 22:29:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:42,741 INFO L479 AbstractCegarLoop]: Abstraction has 671 states and 815 transitions. [2020-08-18 22:29:42,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:29:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 815 transitions. [2020-08-18 22:29:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 22:29:42,748 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:42,749 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:29:42,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:29:42,752 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:42,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:42,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1614775342, now seen corresponding path program 1 times [2020-08-18 22:29:42,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:42,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3253488] [2020-08-18 22:29:42,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:43,056 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:43,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:43,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:43,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:43,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:43,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:43,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 22:29:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:43,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:29:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:43,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:29:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:43,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:43,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:29:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:43,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:43,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:43,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:43,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 22:29:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:43,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:29:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:29:43,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3253488] [2020-08-18 22:29:43,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:43,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:29:43,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957362273] [2020-08-18 22:29:43,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:29:43,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:43,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:29:43,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:29:43,214 INFO L87 Difference]: Start difference. First operand 671 states and 815 transitions. Second operand 9 states. [2020-08-18 22:29:43,650 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:29:44,638 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:44,903 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:29:45,185 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:45,455 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:47,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:47,380 INFO L93 Difference]: Finished difference Result 2315 states and 3234 transitions. [2020-08-18 22:29:47,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 22:29:47,381 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-18 22:29:47,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:47,397 INFO L225 Difference]: With dead ends: 2315 [2020-08-18 22:29:47,397 INFO L226 Difference]: Without dead ends: 1668 [2020-08-18 22:29:47,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:29:47,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-08-18 22:29:47,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1271. [2020-08-18 22:29:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-08-18 22:29:47,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1540 transitions. [2020-08-18 22:29:47,766 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1540 transitions. Word has length 94 [2020-08-18 22:29:47,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:47,766 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1540 transitions. [2020-08-18 22:29:47,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:29:47,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1540 transitions. [2020-08-18 22:29:47,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 22:29:47,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:47,771 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:29:47,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:29:47,772 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:47,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:47,772 INFO L82 PathProgramCache]: Analyzing trace with hash 709252497, now seen corresponding path program 1 times [2020-08-18 22:29:47,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:47,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841665508] [2020-08-18 22:29:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:48,055 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:48,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:48,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:48,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:48,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:48,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:48,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 22:29:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:48,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:29:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:48,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:29:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:48,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:48,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:29:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:48,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:48,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:48,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:48,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 22:29:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:48,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:29:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:48,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:29:48,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841665508] [2020-08-18 22:29:48,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:48,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:29:48,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506464583] [2020-08-18 22:29:48,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:29:48,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:48,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:29:48,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:29:48,248 INFO L87 Difference]: Start difference. First operand 1271 states and 1540 transitions. Second operand 9 states. [2020-08-18 22:29:49,358 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:49,644 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:29:49,908 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:50,143 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:51,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:51,224 INFO L93 Difference]: Finished difference Result 2944 states and 3942 transitions. [2020-08-18 22:29:51,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:29:51,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-18 22:29:51,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:51,237 INFO L225 Difference]: With dead ends: 2944 [2020-08-18 22:29:51,237 INFO L226 Difference]: Without dead ends: 1697 [2020-08-18 22:29:51,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:29:51,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-08-18 22:29:51,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1311. [2020-08-18 22:29:51,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-08-18 22:29:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1580 transitions. [2020-08-18 22:29:51,574 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1580 transitions. Word has length 94 [2020-08-18 22:29:51,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:51,575 INFO L479 AbstractCegarLoop]: Abstraction has 1311 states and 1580 transitions. [2020-08-18 22:29:51,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:29:51,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1580 transitions. [2020-08-18 22:29:51,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 22:29:51,581 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:51,581 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:29:51,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:29:51,582 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:51,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:51,582 INFO L82 PathProgramCache]: Analyzing trace with hash -188140781, now seen corresponding path program 1 times [2020-08-18 22:29:51,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:51,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274112085] [2020-08-18 22:29:51,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:51,921 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:51,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:51,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:51,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:51,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:51,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:51,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 22:29:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:51,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:29:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:51,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:29:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:52,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:52,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:29:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:52,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:52,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:52,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:52,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 22:29:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:52,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:29:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:29:52,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274112085] [2020-08-18 22:29:52,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:52,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 22:29:52,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183330535] [2020-08-18 22:29:52,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 22:29:52,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:52,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 22:29:52,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:29:52,101 INFO L87 Difference]: Start difference. First operand 1311 states and 1580 transitions. Second operand 11 states. [2020-08-18 22:29:52,622 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:52,860 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:53,080 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:53,853 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:54,122 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:54,365 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:55,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:55,458 INFO L93 Difference]: Finished difference Result 2566 states and 3327 transitions. [2020-08-18 22:29:55,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:29:55,458 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-08-18 22:29:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:55,467 INFO L225 Difference]: With dead ends: 2566 [2020-08-18 22:29:55,467 INFO L226 Difference]: Without dead ends: 1279 [2020-08-18 22:29:55,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:29:55,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-08-18 22:29:55,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1029. [2020-08-18 22:29:55,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-08-18 22:29:55,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1212 transitions. [2020-08-18 22:29:55,638 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1212 transitions. Word has length 94 [2020-08-18 22:29:55,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:55,638 INFO L479 AbstractCegarLoop]: Abstraction has 1029 states and 1212 transitions. [2020-08-18 22:29:55,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 22:29:55,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1212 transitions. [2020-08-18 22:29:55,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 22:29:55,642 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:55,642 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:29:55,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 22:29:55,642 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:55,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:55,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1347463022, now seen corresponding path program 1 times [2020-08-18 22:29:55,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:55,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343329757] [2020-08-18 22:29:55,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:55,917 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:55,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:55,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:55,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:55,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:55,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:55,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:29:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:55,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 22:29:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:55,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:29:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:56,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:29:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:56,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:56,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:29:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:56,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:56,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:56,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:56,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 22:29:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:56,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 22:29:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 22:29:56,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343329757] [2020-08-18 22:29:56,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:29:56,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 22:29:56,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706963096] [2020-08-18 22:29:56,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 22:29:56,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:56,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 22:29:56,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 22:29:56,150 INFO L87 Difference]: Start difference. First operand 1029 states and 1212 transitions. Second operand 17 states. [2020-08-18 22:29:56,601 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:29:56,900 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:29:57,156 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:29:57,403 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:29:58,034 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:29:58,649 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:59,025 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:30:00,064 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:30:00,354 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:30:00,685 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:30:00,932 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:30:01,498 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-18 22:30:02,008 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-18 22:30:03,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:30:03,358 INFO L93 Difference]: Finished difference Result 2268 states and 2829 transitions. [2020-08-18 22:30:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 22:30:03,359 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 98 [2020-08-18 22:30:03,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:30:03,367 INFO L225 Difference]: With dead ends: 2268 [2020-08-18 22:30:03,367 INFO L226 Difference]: Without dead ends: 1263 [2020-08-18 22:30:03,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=328, Invalid=1312, Unknown=0, NotChecked=0, Total=1640 [2020-08-18 22:30:03,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2020-08-18 22:30:03,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1007. [2020-08-18 22:30:03,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1007 states. [2020-08-18 22:30:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1163 transitions. [2020-08-18 22:30:03,552 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1163 transitions. Word has length 98 [2020-08-18 22:30:03,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:30:03,554 INFO L479 AbstractCegarLoop]: Abstraction has 1007 states and 1163 transitions. [2020-08-18 22:30:03,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 22:30:03,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1163 transitions. [2020-08-18 22:30:03,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 22:30:03,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:30:03,560 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:30:03,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 22:30:03,561 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:30:03,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:30:03,561 INFO L82 PathProgramCache]: Analyzing trace with hash 555633972, now seen corresponding path program 1 times [2020-08-18 22:30:03,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:30:03,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602226328] [2020-08-18 22:30:03,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:30:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:30:03,642 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:30:03,642 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:30:03,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 22:30:03,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:30:03 BoogieIcfgContainer [2020-08-18 22:30:03,702 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:30:03,707 INFO L168 Benchmark]: Toolchain (without parser) took 39417.33 ms. Allocated memory was 141.0 MB in the beginning and 709.4 MB in the end (delta: 568.3 MB). Free memory was 102.8 MB in the beginning and 275.5 MB in the end (delta: -172.7 MB). Peak memory consumption was 395.6 MB. Max. memory is 7.1 GB. [2020-08-18 22:30:03,708 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 22:30:03,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.50 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 170.9 MB in the end (delta: -68.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-18 22:30:03,709 INFO L168 Benchmark]: Boogie Preprocessor took 90.13 ms. Allocated memory is still 204.5 MB. Free memory was 170.9 MB in the beginning and 166.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-18 22:30:03,712 INFO L168 Benchmark]: RCFGBuilder took 1146.79 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 166.9 MB in the beginning and 191.8 MB in the end (delta: -24.9 MB). Peak memory consumption was 79.8 MB. Max. memory is 7.1 GB. [2020-08-18 22:30:03,715 INFO L168 Benchmark]: TraceAbstraction took 37487.44 ms. Allocated memory was 234.9 MB in the beginning and 709.4 MB in the end (delta: 474.5 MB). Free memory was 190.4 MB in the beginning and 275.5 MB in the end (delta: -85.1 MB). Peak memory consumption was 389.3 MB. Max. memory is 7.1 GB. [2020-08-18 22:30:03,723 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 686.50 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 170.9 MB in the end (delta: -68.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.13 ms. Allocated memory is still 204.5 MB. Free memory was 170.9 MB in the beginning and 166.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1146.79 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 166.9 MB in the beginning and 191.8 MB in the end (delta: -24.9 MB). Peak memory consumption was 79.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37487.44 ms. Allocated memory was 234.9 MB in the beginning and 709.4 MB in the end (delta: 474.5 MB). Free memory was 190.4 MB in the beginning and 275.5 MB in the end (delta: -85.1 MB). Peak memory consumption was 389.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L498] int pumpRunning = 0; [L499] int systemActive = 1; [L693] int waterLevel = 1; [L694] int methaneLevelCritical = 0; [L851] int cleanupTimeShifts = 4; [L924] int retValue_acc ; [L925] int tmp ; [L929] FCALL select_helpers() [L930] FCALL select_features() [L931] CALL, EXPR valid_product() [L842] int retValue_acc ; [L845] retValue_acc = 1 [L846] return (retValue_acc); [L931] RET, EXPR valid_product() [L931] tmp = valid_product() [L933] COND TRUE \read(tmp) [L935] FCALL setup() [L936] CALL runTest() [L918] CALL test() [L422] int splverifierCounter ; [L423] int tmp ; [L424] int tmp___0 ; [L425] int tmp___1 ; [L426] int tmp___2 ; [L429] splverifierCounter = 0 [L431] COND TRUE 1 [L433] COND TRUE splverifierCounter < 4 [L439] tmp = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp) [L443] CALL waterRise() [L711] COND TRUE waterLevel < 2 [L712] waterLevel = waterLevel + 1 [L443] RET waterRise() [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___0)) [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) [L478] CALL timeShift() [L506] COND FALSE !(\read(pumpRunning)) [L513] COND TRUE \read(systemActive) [L515] CALL processEnvironment() [L535] int tmp ; [L538] COND TRUE ! pumpRunning [L540] CALL, EXPR isHighWaterLevel() [L650] int retValue_acc ; [L651] int tmp ; [L652] int tmp___0 ; [L656] CALL, EXPR isHighWaterSensorDry() [L773] int retValue_acc ; [L776] COND FALSE !(waterLevel < 2) [L780] retValue_acc = 0 [L781] return (retValue_acc); [L656] RET, EXPR isHighWaterSensorDry() [L656] tmp = isHighWaterSensorDry() [L658] COND FALSE !(\read(tmp)) [L661] tmp___0 = 1 [L663] retValue_acc = tmp___0 [L664] return (retValue_acc); [L540] RET, EXPR isHighWaterLevel() [L540] tmp = isHighWaterLevel() [L542] COND TRUE \read(tmp) [L544] CALL activatePump() [L569] int tmp ; [L573] CALL, EXPR isMethaneAlarm() [L594] int retValue_acc ; [L598] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L598] RET, EXPR isMethaneLevelCritical() [L598] retValue_acc = isMethaneLevelCritical() [L600] return (retValue_acc); [L573] RET, EXPR isMethaneAlarm() [L573] tmp = isMethaneAlarm() [L575] COND FALSE !(\read(tmp)) [L579] CALL activatePump__wrappee__highWaterSensor() [L563] pumpRunning = 1 [L579] RET activatePump__wrappee__highWaterSensor() [L544] RET activatePump() [L515] RET processEnvironment() [L521] CALL __utac_acc__Specification1_spec__1() [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L793] RET, EXPR isMethaneLevelCritical() [L793] tmp = isMethaneLevelCritical() [L795] COND FALSE !(\read(tmp)) [L521] RET __utac_acc__Specification1_spec__1() [L478] RET timeShift() [L431] COND TRUE 1 [L433] COND TRUE splverifierCounter < 4 [L439] tmp = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp)) [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp___0) [L453] CALL changeMethaneLevel() [L723] COND FALSE !(\read(methaneLevelCritical)) [L726] methaneLevelCritical = 1 [L453] RET changeMethaneLevel() [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) [L478] CALL timeShift() [L506] COND TRUE \read(pumpRunning) [L508] CALL lowerWaterLevel() [L699] COND TRUE waterLevel > 0 [L700] waterLevel = waterLevel - 1 [L508] RET lowerWaterLevel() [L513] COND TRUE \read(systemActive) [L515] CALL processEnvironment() [L535] int tmp ; [L538] COND FALSE !(! pumpRunning) [L553] FCALL processEnvironment__wrappee__base() [L515] RET processEnvironment() [L521] CALL __utac_acc__Specification1_spec__1() [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L793] RET, EXPR isMethaneLevelCritical() [L793] tmp = isMethaneLevelCritical() [L795] COND TRUE \read(tmp) [L797] CALL, EXPR isPumpRunning() [L605] int retValue_acc ; [L608] retValue_acc = pumpRunning [L609] return (retValue_acc); [L797] RET, EXPR isPumpRunning() [L797] tmp___0 = isPumpRunning() [L799] COND TRUE \read(tmp___0) [L801] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 37.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 31.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1086 SDtfs, 2271 SDslu, 1554 SDs, 0 SdLazy, 7793 SolverSat, 1524 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 13.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1311occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 1723 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 777 NumberOfCodeBlocks, 777 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 634 ConstructedInterpolants, 0 QuantifiedInterpolants, 196729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 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...