/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:17:57,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:17:57,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:17:57,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:17:57,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:17:57,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:17:57,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:17:57,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:17:57,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:17:57,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:17:57,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:17:57,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:17:57,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:17:57,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:17:57,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:17:57,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:17:57,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:17:57,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:17:57,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:17:57,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:17:57,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:17:57,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:17:57,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:17:57,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:17:57,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:17:57,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:17:57,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:17:57,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:17:57,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:17:57,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:17:57,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:17:57,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:17:57,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:17:57,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:17:57,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:17:58,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:17:58,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:17:58,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:17:58,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:17:58,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:17:58,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:17:58,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 10:17:58,043 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:17:58,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:17:58,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:17:58,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:17:58,045 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:17:58,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:17:58,046 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:17:58,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:17:58,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:17:58,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:17:58,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:17:58,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:17:58,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:17:58,048 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:17:58,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:17:58,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:17:58,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:17:58,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:17:58,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:17:58,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:17:58,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:17:58,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:17:58,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:17:58,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:17:58,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:17:58,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:17:58,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:17:58,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:17:58,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:17:58,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 10:17:58,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:17:58,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:17:58,351 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:17:58,353 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:17:58,353 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:17:58,353 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-08-18 10:17:58,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/391da347e/1a672d64cc524e6aa8ca394433fd20a0/FLAGcc21fd3f8 [2020-08-18 10:17:58,950 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:17:58,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-08-18 10:17:58,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/391da347e/1a672d64cc524e6aa8ca394433fd20a0/FLAGcc21fd3f8 [2020-08-18 10:17:59,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/391da347e/1a672d64cc524e6aa8ca394433fd20a0 [2020-08-18 10:17:59,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:17:59,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:17:59,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:17:59,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:17:59,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:17:59,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:17:59" (1/1) ... [2020-08-18 10:17:59,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3210105d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:59, skipping insertion in model container [2020-08-18 10:17:59,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:17:59" (1/1) ... [2020-08-18 10:17:59,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:17:59,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:17:59,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:17:59,761 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:17:59,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:17:59,900 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:17:59,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:59 WrapperNode [2020-08-18 10:17:59,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:17:59,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:17:59,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:17:59,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:17:59,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:59" (1/1) ... [2020-08-18 10:17:59,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:59" (1/1) ... [2020-08-18 10:17:59,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:59" (1/1) ... [2020-08-18 10:17:59,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:59" (1/1) ... [2020-08-18 10:17:59,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:59" (1/1) ... [2020-08-18 10:17:59,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:59" (1/1) ... [2020-08-18 10:17:59,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:59" (1/1) ... [2020-08-18 10:18:00,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:18:00,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:18:00,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:18:00,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:18:00,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:18:00,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:18:00,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:18:00,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:18:00,064 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:18:00,065 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:18:00,065 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:18:00,065 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:18:00,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:18:00,066 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:18:00,066 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:18:00,066 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:18:00,067 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:18:00,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 10:18:00,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:18:00,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:18:00,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:18:00,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:18:00,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:18:00,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:18:00,069 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:18:00,069 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:18:00,070 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:18:00,070 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:18:00,070 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:18:00,071 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:18:00,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:18:00,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:18:00,072 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:18:00,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:18:00,073 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:18:00,073 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:18:00,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:18:00,073 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:18:00,073 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:18:00,074 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:18:00,074 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:18:00,074 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:18:00,074 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:18:00,074 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:18:00,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:18:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:18:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:18:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:18:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:18:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:18:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:18:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:18:00,076 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:18:00,077 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:18:00,077 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:18:00,077 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:18:00,077 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:18:00,077 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:18:00,078 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:18:00,078 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:18:00,078 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:18:00,078 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:18:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:18:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:18:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 10:18:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:18:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:18:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:18:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:18:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:18:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:18:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:18:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:18:00,081 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:18:00,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:18:00,081 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:18:00,081 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:18:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:18:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:18:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:18:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:18:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:18:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:18:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:18:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:18:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:18:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:18:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:18:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:18:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:18:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:18:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:18:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:18:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:18:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:18:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:18:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:18:01,161 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:18:01,162 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:18:01,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:18:01 BoogieIcfgContainer [2020-08-18 10:18:01,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:18:01,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:18:01,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:18:01,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:18:01,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:17:59" (1/3) ... [2020-08-18 10:18:01,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37314dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:18:01, skipping insertion in model container [2020-08-18 10:18:01,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:59" (2/3) ... [2020-08-18 10:18:01,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37314dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:18:01, skipping insertion in model container [2020-08-18 10:18:01,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:18:01" (3/3) ... [2020-08-18 10:18:01,175 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2020-08-18 10:18:01,186 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:18:01,194 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:18:01,209 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:18:01,235 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:18:01,236 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:18:01,236 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:18:01,236 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:18:01,236 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:18:01,237 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:18:01,237 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:18:01,237 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:18:01,260 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-18 10:18:01,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 10:18:01,270 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:01,272 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 10:18:01,272 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:01,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:01,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1406508770, now seen corresponding path program 1 times [2020-08-18 10:18:01,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:01,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710283048] [2020-08-18 10:18:01,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:01,936 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:01,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:02,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:02,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:02,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:02,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:02,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:18:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:02,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:18:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:02,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:02,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710283048] [2020-08-18 10:18:02,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:02,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:18:02,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462589402] [2020-08-18 10:18:02,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:18:02,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:02,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:18:02,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:18:02,094 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-18 10:18:03,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:03,259 INFO L93 Difference]: Finished difference Result 296 states and 388 transitions. [2020-08-18 10:18:03,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:18:03,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 10:18:03,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:03,277 INFO L225 Difference]: With dead ends: 296 [2020-08-18 10:18:03,277 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 10:18:03,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:18:03,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 10:18:03,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-18 10:18:03,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-18 10:18:03,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 149 transitions. [2020-08-18 10:18:03,401 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 149 transitions. Word has length 46 [2020-08-18 10:18:03,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:03,402 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 149 transitions. [2020-08-18 10:18:03,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:18:03,403 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 149 transitions. [2020-08-18 10:18:03,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 10:18:03,414 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:03,414 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 10:18:03,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:18:03,414 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:03,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:03,415 INFO L82 PathProgramCache]: Analyzing trace with hash 297997714, now seen corresponding path program 1 times [2020-08-18 10:18:03,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:03,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126531793] [2020-08-18 10:18:03,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,829 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:03,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:18:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:18:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:03,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126531793] [2020-08-18 10:18:03,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:03,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:18:03,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744530686] [2020-08-18 10:18:03,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:18:03,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:03,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:18:03,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:18:03,921 INFO L87 Difference]: Start difference. First operand 127 states and 149 transitions. Second operand 4 states. [2020-08-18 10:18:04,325 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:05,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:05,138 INFO L93 Difference]: Finished difference Result 225 states and 275 transitions. [2020-08-18 10:18:05,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:18:05,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 10:18:05,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:05,146 INFO L225 Difference]: With dead ends: 225 [2020-08-18 10:18:05,146 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 10:18:05,152 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 10:18:05,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 10:18:05,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-18 10:18:05,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-18 10:18:05,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-08-18 10:18:05,193 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 47 [2020-08-18 10:18:05,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:05,193 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-08-18 10:18:05,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:18:05,194 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-08-18 10:18:05,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:18:05,195 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:05,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:05,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:18:05,196 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:05,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:05,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1416539958, now seen corresponding path program 1 times [2020-08-18 10:18:05,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:05,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978361350] [2020-08-18 10:18:05,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:05,553 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:05,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:05,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:05,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:05,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:05,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:05,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:18:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:05,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:18:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:05,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:05,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978361350] [2020-08-18 10:18:05,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:05,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:18:05,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499789921] [2020-08-18 10:18:05,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:18:05,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:05,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:18:05,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:18:05,639 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 8 states. [2020-08-18 10:18:05,983 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:06,323 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:06,585 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:06,826 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:08,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:08,040 INFO L93 Difference]: Finished difference Result 238 states and 293 transitions. [2020-08-18 10:18:08,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 10:18:08,044 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 10:18:08,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:08,046 INFO L225 Difference]: With dead ends: 238 [2020-08-18 10:18:08,046 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 10:18:08,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:18:08,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 10:18:08,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-18 10:18:08,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-18 10:18:08,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-18 10:18:08,083 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 52 [2020-08-18 10:18:08,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:08,084 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-18 10:18:08,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:18:08,084 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-18 10:18:08,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 10:18:08,086 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:08,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:08,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:18:08,087 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:08,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:08,087 INFO L82 PathProgramCache]: Analyzing trace with hash -819223945, now seen corresponding path program 1 times [2020-08-18 10:18:08,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:08,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726926162] [2020-08-18 10:18:08,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:08,387 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:08,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:08,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:08,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:08,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:08,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:08,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:18:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:08,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:08,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:08,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 10:18:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:08,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 10:18:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:08,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726926162] [2020-08-18 10:18:08,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:08,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:18:08,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160527955] [2020-08-18 10:18:08,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:18:08,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:08,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:18:08,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:18:08,518 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 6 states. [2020-08-18 10:18:08,842 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:09,986 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:10,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:10,624 INFO L93 Difference]: Finished difference Result 335 states and 415 transitions. [2020-08-18 10:18:10,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:18:10,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 10:18:10,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:10,629 INFO L225 Difference]: With dead ends: 335 [2020-08-18 10:18:10,629 INFO L226 Difference]: Without dead ends: 241 [2020-08-18 10:18:10,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:18:10,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-18 10:18:10,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 198. [2020-08-18 10:18:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-08-18 10:18:10,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 225 transitions. [2020-08-18 10:18:10,681 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 225 transitions. Word has length 65 [2020-08-18 10:18:10,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:10,682 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 225 transitions. [2020-08-18 10:18:10,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:18:10,682 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 225 transitions. [2020-08-18 10:18:10,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 10:18:10,683 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:10,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:10,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:18:10,684 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:10,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:10,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1180966768, now seen corresponding path program 1 times [2020-08-18 10:18:10,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:10,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701273333] [2020-08-18 10:18:10,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:11,011 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:11,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:11,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:11,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:11,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:11,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:11,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:18:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:11,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:11,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:11,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:11,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:11,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 10:18:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:11,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 10:18:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:11,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701273333] [2020-08-18 10:18:11,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:11,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:18:11,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962174875] [2020-08-18 10:18:11,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:18:11,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:11,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:18:11,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:18:11,100 INFO L87 Difference]: Start difference. First operand 198 states and 225 transitions. Second operand 8 states. [2020-08-18 10:18:11,434 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:12,563 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:12,830 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:13,060 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:13,270 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:13,594 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:14,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:14,596 INFO L93 Difference]: Finished difference Result 592 states and 731 transitions. [2020-08-18 10:18:14,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:18:14,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-18 10:18:14,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:14,602 INFO L225 Difference]: With dead ends: 592 [2020-08-18 10:18:14,603 INFO L226 Difference]: Without dead ends: 418 [2020-08-18 10:18:14,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 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 10:18:14,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-08-18 10:18:14,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 351. [2020-08-18 10:18:14,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-18 10:18:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 400 transitions. [2020-08-18 10:18:14,681 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 400 transitions. Word has length 79 [2020-08-18 10:18:14,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:14,682 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 400 transitions. [2020-08-18 10:18:14,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:18:14,682 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 400 transitions. [2020-08-18 10:18:14,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 10:18:14,683 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:14,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:14,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:18:14,684 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:14,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:14,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1165038356, now seen corresponding path program 1 times [2020-08-18 10:18:14,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:14,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332127753] [2020-08-18 10:18:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:14,965 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:14,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:14,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:14,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:14,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:14,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:18:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:18:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 10:18:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 10:18:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:15,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332127753] [2020-08-18 10:18:15,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:15,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:18:15,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141176952] [2020-08-18 10:18:15,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:18:15,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:15,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:18:15,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:18:15,060 INFO L87 Difference]: Start difference. First operand 351 states and 400 transitions. Second operand 9 states. [2020-08-18 10:18:15,403 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:16,450 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:16,700 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:16,947 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:17,183 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:17,435 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:18,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:18,464 INFO L93 Difference]: Finished difference Result 460 states and 580 transitions. [2020-08-18 10:18:18,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 10:18:18,464 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 10:18:18,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:18,471 INFO L225 Difference]: With dead ends: 460 [2020-08-18 10:18:18,471 INFO L226 Difference]: Without dead ends: 457 [2020-08-18 10:18:18,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 10:18:18,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-08-18 10:18:18,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 351. [2020-08-18 10:18:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-18 10:18:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 399 transitions. [2020-08-18 10:18:18,551 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 399 transitions. Word has length 83 [2020-08-18 10:18:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:18,552 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 399 transitions. [2020-08-18 10:18:18,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:18:18,552 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 399 transitions. [2020-08-18 10:18:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 10:18:18,554 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:18,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:18,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:18:18,555 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:18,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:18,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1066260182, now seen corresponding path program 1 times [2020-08-18 10:18:18,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:18,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786903088] [2020-08-18 10:18:18,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,781 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:18,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:18:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:18:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:18:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 10:18:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:18,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786903088] [2020-08-18 10:18:18,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:18,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:18:18,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880828953] [2020-08-18 10:18:18,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:18:18,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:18,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:18:18,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:18:18,930 INFO L87 Difference]: Start difference. First operand 351 states and 399 transitions. Second operand 9 states. [2020-08-18 10:18:19,820 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:20,068 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:18:20,318 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:20,553 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:21,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:21,512 INFO L93 Difference]: Finished difference Result 788 states and 970 transitions. [2020-08-18 10:18:21,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:18:21,515 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 10:18:21,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:21,519 INFO L225 Difference]: With dead ends: 788 [2020-08-18 10:18:21,520 INFO L226 Difference]: Without dead ends: 461 [2020-08-18 10:18:21,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:18:21,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-08-18 10:18:21,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 361. [2020-08-18 10:18:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-18 10:18:21,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 409 transitions. [2020-08-18 10:18:21,595 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 409 transitions. Word has length 84 [2020-08-18 10:18:21,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:21,596 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 409 transitions. [2020-08-18 10:18:21,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:18:21,596 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 409 transitions. [2020-08-18 10:18:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 10:18:21,598 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:21,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:21,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:18:21,598 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:21,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:21,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1088892436, now seen corresponding path program 1 times [2020-08-18 10:18:21,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:21,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882861290] [2020-08-18 10:18:21,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:21,898 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:21,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:21,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:21,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:21,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:21,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:21,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:18:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:21,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:18:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:21,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:21,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:22,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:22,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:22,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:18:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:22,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 10:18:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:22,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882861290] [2020-08-18 10:18:22,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:22,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 10:18:22,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102378235] [2020-08-18 10:18:22,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 10:18:22,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:22,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 10:18:22,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:18:22,045 INFO L87 Difference]: Start difference. First operand 361 states and 409 transitions. Second operand 11 states. [2020-08-18 10:18:22,595 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:22,831 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:23,061 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:23,657 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:23,919 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:24,151 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:25,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:25,264 INFO L93 Difference]: Finished difference Result 812 states and 1010 transitions. [2020-08-18 10:18:25,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:18:25,265 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-18 10:18:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:25,269 INFO L225 Difference]: With dead ends: 812 [2020-08-18 10:18:25,270 INFO L226 Difference]: Without dead ends: 475 [2020-08-18 10:18:25,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 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 10:18:25,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-08-18 10:18:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 369. [2020-08-18 10:18:25,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-08-18 10:18:25,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 417 transitions. [2020-08-18 10:18:25,356 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 417 transitions. Word has length 84 [2020-08-18 10:18:25,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:25,357 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 417 transitions. [2020-08-18 10:18:25,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 10:18:25,357 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 417 transitions. [2020-08-18 10:18:25,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 10:18:25,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:25,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:25,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:18:25,361 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:25,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:25,361 INFO L82 PathProgramCache]: Analyzing trace with hash 2114384435, now seen corresponding path program 1 times [2020-08-18 10:18:25,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:25,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115787840] [2020-08-18 10:18:25,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:25,662 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:25,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:25,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:25,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:25,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:25,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:18:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:25,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:18:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:25,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:25,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:25,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:25,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:25,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:18:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:25,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 10:18:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:25,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:25,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115787840] [2020-08-18 10:18:25,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:25,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 10:18:25,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259239578] [2020-08-18 10:18:25,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 10:18:25,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:25,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 10:18:25,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:18:25,812 INFO L87 Difference]: Start difference. First operand 369 states and 417 transitions. Second operand 7 states. [2020-08-18 10:18:26,236 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:26,827 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:28,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:28,719 INFO L93 Difference]: Finished difference Result 1154 states and 1484 transitions. [2020-08-18 10:18:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 10:18:28,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-18 10:18:28,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:28,725 INFO L225 Difference]: With dead ends: 1154 [2020-08-18 10:18:28,725 INFO L226 Difference]: Without dead ends: 809 [2020-08-18 10:18:28,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 10:18:28,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-08-18 10:18:28,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 689. [2020-08-18 10:18:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-08-18 10:18:28,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 811 transitions. [2020-08-18 10:18:28,913 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 811 transitions. Word has length 84 [2020-08-18 10:18:28,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:28,915 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 811 transitions. [2020-08-18 10:18:28,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 10:18:28,915 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 811 transitions. [2020-08-18 10:18:28,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 10:18:28,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:28,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:28,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:18:28,922 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:28,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:28,923 INFO L82 PathProgramCache]: Analyzing trace with hash 166319437, now seen corresponding path program 1 times [2020-08-18 10:18:28,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:28,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728452890] [2020-08-18 10:18:28,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:18:29,021 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:18:29,021 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:18:29,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:18:29,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:18:29 BoogieIcfgContainer [2020-08-18 10:18:29,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:18:29,077 INFO L168 Benchmark]: Toolchain (without parser) took 29813.19 ms. Allocated memory was 147.8 MB in the beginning and 625.0 MB in the end (delta: 477.1 MB). Free memory was 103.0 MB in the beginning and 381.7 MB in the end (delta: -278.6 MB). Peak memory consumption was 198.5 MB. Max. memory is 7.1 GB. [2020-08-18 10:18:29,079 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 10:18:29,084 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.52 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.8 MB in the beginning and 171.8 MB in the end (delta: -69.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-08-18 10:18:29,088 INFO L168 Benchmark]: Boogie Preprocessor took 103.56 ms. Allocated memory is still 204.5 MB. Free memory was 171.8 MB in the beginning and 167.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-18 10:18:29,091 INFO L168 Benchmark]: RCFGBuilder took 1162.24 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 167.8 MB in the beginning and 193.0 MB in the end (delta: -25.2 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. [2020-08-18 10:18:29,092 INFO L168 Benchmark]: TraceAbstraction took 27903.28 ms. Allocated memory was 234.9 MB in the beginning and 625.0 MB in the end (delta: 390.1 MB). Free memory was 193.0 MB in the beginning and 381.7 MB in the end (delta: -188.6 MB). Peak memory consumption was 201.4 MB. Max. memory is 7.1 GB. [2020-08-18 10:18:29,101 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 639.52 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.8 MB in the beginning and 171.8 MB in the end (delta: -69.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.56 ms. Allocated memory is still 204.5 MB. Free memory was 171.8 MB in the beginning and 167.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1162.24 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 167.8 MB in the beginning and 193.0 MB in the end (delta: -25.2 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27903.28 ms. Allocated memory was 234.9 MB in the beginning and 625.0 MB in the end (delta: 390.1 MB). Free memory was 193.0 MB in the beginning and 381.7 MB in the end (delta: -188.6 MB). Peak memory consumption was 201.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 837]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L377] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L580] int pumpRunning = 0; [L581] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L767] int splverifierCounter ; [L768] int tmp ; [L769] int tmp___0 ; [L770] int tmp___1 ; [L771] int tmp___2 ; [L774] splverifierCounter = 0 [L776] COND TRUE 1 [L778] COND TRUE splverifierCounter < 4 [L784] tmp = __VERIFIER_nondet_int() [L786] COND TRUE \read(tmp) [L788] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L788] RET waterRise() [L794] tmp___0 = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp___0) [L798] CALL changeMethaneLevel() [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 [L798] RET changeMethaneLevel() [L804] tmp___2 = __VERIFIER_nondet_int() [L806] COND FALSE !(\read(tmp___2)) [L812] tmp___1 = __VERIFIER_nondet_int() [L814] COND TRUE \read(tmp___1) [L821] CALL timeShift() [L587] COND FALSE !(\read(pumpRunning)) [L594] COND TRUE \read(systemActive) [L596] CALL processEnvironment() [L642] int tmp ; [L645] COND FALSE !(\read(pumpRunning)) [L660] CALL processEnvironment__wrappee__highWaterSensor() [L616] int tmp ; [L619] COND TRUE ! pumpRunning [L621] CALL, EXPR isHighWaterLevel() [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; [L745] CALL, EXPR isHighWaterSensorDry() [L923] int retValue_acc ; [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); [L745] RET, EXPR isHighWaterSensorDry() [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] tmp___0 = 1 [L752] retValue_acc = tmp___0 [L753] return (retValue_acc); [L621] RET, EXPR isHighWaterLevel() [L621] tmp = isHighWaterLevel() [L623] COND TRUE \read(tmp) [L625] CALL activatePump() [L670] pumpRunning = 1 [L625] RET activatePump() [L660] RET processEnvironment__wrappee__highWaterSensor() [L596] RET processEnvironment() [L602] CALL __utac_acc__Specification1_spec__1() [L183] int tmp ; [L184] int tmp___0 ; [L188] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L188] RET, EXPR isMethaneLevelCritical() [L188] tmp = isMethaneLevelCritical() [L190] COND TRUE \read(tmp) [L192] CALL, EXPR isPumpRunning() [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); [L192] RET, EXPR isPumpRunning() [L192] tmp___0 = isPumpRunning() [L194] COND TRUE \read(tmp___0) [L196] CALL __automaton_fail() [L837] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 229 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1049 SDtfs, 1883 SDslu, 983 SDs, 0 SdLazy, 4949 SolverSat, 1282 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 222 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=689occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 627 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 615 ConstructedInterpolants, 0 QuantifiedInterpolants, 190312 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...