/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:50:26,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:50:26,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:50:27,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:50:27,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:50:27,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:50:27,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:50:27,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:50:27,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:50:27,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:50:27,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:50:27,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:50:27,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:50:27,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:50:27,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:50:27,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:50:27,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:50:27,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:50:27,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:50:27,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:50:27,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:50:27,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:50:27,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:50:27,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:50:27,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 12:50:27,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 12:50:27,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 12:50:27,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 12:50:27,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 12:50:27,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 12:50:27,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 12:50:27,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 12:50:27,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 12:50:27,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 12:50:27,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 12:50:27,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 12:50:27,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 12:50:27,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 12:50:27,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:50:27,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:50:27,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:50:27,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 12:50:27,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:50:27,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:50:27,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:50:27,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:50:27,107 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:50:27,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:50:27,108 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:50:27,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:50:27,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:50:27,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:50:27,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:50:27,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:50:27,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:50:27,109 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:50:27,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:50:27,110 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:50:27,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:50:27,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:50:27,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:50:27,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:50:27,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:50:27,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:50:27,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:50:27,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:50:27,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:50:27,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:50:27,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:27,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:50:27,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:50:27,114 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 12:50:27,404 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:50:27,420 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:50:27,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:50:27,425 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:50:27,426 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:50:27,426 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-07-21 12:50:27,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09f8724ae/79763004b1c04a5ab452808042b0f2d8/FLAGb72e00605 [2020-07-21 12:50:28,009 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:50:28,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-07-21 12:50:28,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09f8724ae/79763004b1c04a5ab452808042b0f2d8/FLAGb72e00605 [2020-07-21 12:50:28,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09f8724ae/79763004b1c04a5ab452808042b0f2d8 [2020-07-21 12:50:28,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:50:28,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:50:28,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:50:28,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:50:28,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:50:28,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:50:28" (1/1) ... [2020-07-21 12:50:28,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211823ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:28, skipping insertion in model container [2020-07-21 12:50:28,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:50:28" (1/1) ... [2020-07-21 12:50:28,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:50:28,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:50:28,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:50:29,004 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:50:29,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:50:29,162 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:50:29,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:29 WrapperNode [2020-07-21 12:50:29,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:50:29,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:50:29,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:50:29,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:50:29,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:29" (1/1) ... [2020-07-21 12:50:29,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:29" (1/1) ... [2020-07-21 12:50:29,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:29" (1/1) ... [2020-07-21 12:50:29,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:29" (1/1) ... [2020-07-21 12:50:29,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:29" (1/1) ... [2020-07-21 12:50:29,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:29" (1/1) ... [2020-07-21 12:50:29,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:29" (1/1) ... [2020-07-21 12:50:29,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:50:29,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:50:29,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:50:29,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:50:29,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-21 12:50:29,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:50:29,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:50:29,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 12:50:29,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 12:50:29,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 12:50:29,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 12:50:29,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 12:50:29,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 12:50:29,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 12:50:29,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-21 12:50:29,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 12:50:29,333 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 12:50:29,333 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 12:50:29,333 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 12:50:29,333 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 12:50:29,334 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 12:50:29,334 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 12:50:29,334 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 12:50:29,334 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 12:50:29,335 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 12:50:29,335 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 12:50:29,336 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-21 12:50:29,336 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 12:50:29,336 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 12:50:29,337 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 12:50:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 12:50:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 12:50:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 12:50:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 12:50:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-21 12:50:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 12:50:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 12:50:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 12:50:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 12:50:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 12:50:29,340 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 12:50:29,340 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 12:50:29,340 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 12:50:29,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:50:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:50:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 12:50:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 12:50:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 12:50:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 12:50:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 12:50:29,341 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 12:50:29,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 12:50:29,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 12:50:29,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 12:50:29,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 12:50:29,342 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 12:50:29,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 12:50:29,342 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 12:50:29,342 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 12:50:29,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 12:50:29,342 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 12:50:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 12:50:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 12:50:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 12:50:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 12:50:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 12:50:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 12:50:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-21 12:50:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 12:50:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 12:50:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 12:50:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 12:50:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 12:50:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 12:50:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-21 12:50:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 12:50:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 12:50:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 12:50:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 12:50:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 12:50:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 12:50:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 12:50:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 12:50:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 12:50:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-21 12:50:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 12:50:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 12:50:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 12:50:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 12:50:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 12:50:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 12:50:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 12:50:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 12:50:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:50:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:50:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 12:50:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:50:30,458 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:50:30,458 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 12:50:30,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:50:30 BoogieIcfgContainer [2020-07-21 12:50:30,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:50:30,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:50:30,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:50:30,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:50:30,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:50:28" (1/3) ... [2020-07-21 12:50:30,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224bb1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:50:30, skipping insertion in model container [2020-07-21 12:50:30,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:29" (2/3) ... [2020-07-21 12:50:30,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224bb1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:50:30, skipping insertion in model container [2020-07-21 12:50:30,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:50:30" (3/3) ... [2020-07-21 12:50:30,473 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product39.cil.c [2020-07-21 12:50:30,483 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:50:30,492 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:50:30,506 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:50:30,532 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:50:30,532 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:50:30,532 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:50:30,532 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:50:30,533 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:50:30,533 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:50:30,533 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:50:30,533 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:50:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-07-21 12:50:30,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 12:50:30,563 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:30,564 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] [2020-07-21 12:50:30,564 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:30,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:30,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1081228888, now seen corresponding path program 1 times [2020-07-21 12:50:30,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:30,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243069834] [2020-07-21 12:50:30,581 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:30,983 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:30,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:30,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:50:31,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:31,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:31,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243069834] [2020-07-21 12:50:31,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:31,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:50:31,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052427584] [2020-07-21 12:50:31,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:50:31,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:31,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:50:31,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:50:31,066 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 2 states. [2020-07-21 12:50:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:31,113 INFO L93 Difference]: Finished difference Result 258 states and 323 transitions. [2020-07-21 12:50:31,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:50:31,115 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 12:50:31,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:31,134 INFO L225 Difference]: With dead ends: 258 [2020-07-21 12:50:31,135 INFO L226 Difference]: Without dead ends: 129 [2020-07-21 12:50:31,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:50:31,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-07-21 12:50:31,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-07-21 12:50:31,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-07-21 12:50:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2020-07-21 12:50:31,252 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 46 [2020-07-21 12:50:31,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:31,253 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2020-07-21 12:50:31,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:50:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2020-07-21 12:50:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 12:50:31,257 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:31,257 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] [2020-07-21 12:50:31,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:31,472 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:31,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:31,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1618039840, now seen corresponding path program 1 times [2020-07-21 12:50:31,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:31,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647013564] [2020-07-21 12:50:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:31,844 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:31,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:31,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:50:31,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:31,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:31,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647013564] [2020-07-21 12:50:31,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:31,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:31,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118049878] [2020-07-21 12:50:31,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:31,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:31,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:31,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:31,887 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand 3 states. [2020-07-21 12:50:31,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:31,910 INFO L93 Difference]: Finished difference Result 201 states and 237 transitions. [2020-07-21 12:50:31,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:31,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 12:50:31,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:31,913 INFO L225 Difference]: With dead ends: 201 [2020-07-21 12:50:31,913 INFO L226 Difference]: Without dead ends: 120 [2020-07-21 12:50:31,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:31,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-07-21 12:50:31,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-07-21 12:50:31,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-21 12:50:31,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2020-07-21 12:50:31,935 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 47 [2020-07-21 12:50:31,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:31,935 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2020-07-21 12:50:31,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:31,935 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2020-07-21 12:50:31,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-21 12:50:31,938 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:31,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:32,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:32,139 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:32,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:32,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1339561462, now seen corresponding path program 1 times [2020-07-21 12:50:32,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:32,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743869623] [2020-07-21 12:50:32,142 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:32,437 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:32,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:32,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 12:50:32,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:32,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:32,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743869623] [2020-07-21 12:50:32,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:32,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:32,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147196222] [2020-07-21 12:50:32,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:32,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:32,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:32,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:32,478 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand 3 states. [2020-07-21 12:50:32,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:32,506 INFO L93 Difference]: Finished difference Result 310 states and 375 transitions. [2020-07-21 12:50:32,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:32,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-21 12:50:32,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:32,511 INFO L225 Difference]: With dead ends: 310 [2020-07-21 12:50:32,511 INFO L226 Difference]: Without dead ends: 214 [2020-07-21 12:50:32,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:32,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-21 12:50:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 210. [2020-07-21 12:50:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-07-21 12:50:32,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 253 transitions. [2020-07-21 12:50:32,540 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 253 transitions. Word has length 51 [2020-07-21 12:50:32,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:32,540 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 253 transitions. [2020-07-21 12:50:32,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:32,540 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 253 transitions. [2020-07-21 12:50:32,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 12:50:32,543 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:32,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:32,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:32,759 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:32,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:32,759 INFO L82 PathProgramCache]: Analyzing trace with hash 857479477, now seen corresponding path program 1 times [2020-07-21 12:50:32,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:32,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690686546] [2020-07-21 12:50:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:33,154 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:33,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:33,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:50:33,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:33,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:33,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690686546] [2020-07-21 12:50:33,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:33,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:33,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134136325] [2020-07-21 12:50:33,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:33,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:33,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:33,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:33,216 INFO L87 Difference]: Start difference. First operand 210 states and 253 transitions. Second operand 6 states. [2020-07-21 12:50:33,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:33,435 INFO L93 Difference]: Finished difference Result 506 states and 639 transitions. [2020-07-21 12:50:33,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:50:33,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 12:50:33,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:33,440 INFO L225 Difference]: With dead ends: 506 [2020-07-21 12:50:33,440 INFO L226 Difference]: Without dead ends: 320 [2020-07-21 12:50:33,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:50:33,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-07-21 12:50:33,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 310. [2020-07-21 12:50:33,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-07-21 12:50:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 377 transitions. [2020-07-21 12:50:33,473 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 377 transitions. Word has length 57 [2020-07-21 12:50:33,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:33,474 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 377 transitions. [2020-07-21 12:50:33,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:33,474 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 377 transitions. [2020-07-21 12:50:33,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 12:50:33,477 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:33,477 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] [2020-07-21 12:50:33,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:33,691 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:33,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:33,692 INFO L82 PathProgramCache]: Analyzing trace with hash -2089178819, now seen corresponding path program 1 times [2020-07-21 12:50:33,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:33,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245928494] [2020-07-21 12:50:33,693 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:33,950 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:33,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:33,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 12:50:33,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:34,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:34,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:34,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245928494] [2020-07-21 12:50:34,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:34,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:34,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125020304] [2020-07-21 12:50:34,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:34,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:34,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:34,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:34,017 INFO L87 Difference]: Start difference. First operand 310 states and 377 transitions. Second operand 3 states. [2020-07-21 12:50:34,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:34,080 INFO L93 Difference]: Finished difference Result 874 states and 1145 transitions. [2020-07-21 12:50:34,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:34,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-07-21 12:50:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:34,090 INFO L225 Difference]: With dead ends: 874 [2020-07-21 12:50:34,090 INFO L226 Difference]: Without dead ends: 588 [2020-07-21 12:50:34,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:34,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-07-21 12:50:34,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 585. [2020-07-21 12:50:34,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-07-21 12:50:34,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 748 transitions. [2020-07-21 12:50:34,139 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 748 transitions. Word has length 79 [2020-07-21 12:50:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:34,139 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 748 transitions. [2020-07-21 12:50:34,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:34,139 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 748 transitions. [2020-07-21 12:50:34,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 12:50:34,143 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:34,143 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] [2020-07-21 12:50:34,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:34,358 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:34,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:34,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1180296478, now seen corresponding path program 1 times [2020-07-21 12:50:34,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:34,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726057460] [2020-07-21 12:50:34,360 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:34,681 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:34,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:34,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 12:50:34,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:34,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:34,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:34,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726057460] [2020-07-21 12:50:34,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:34,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:34,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967672734] [2020-07-21 12:50:34,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:34,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:34,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:34,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:34,735 INFO L87 Difference]: Start difference. First operand 585 states and 748 transitions. Second operand 6 states. [2020-07-21 12:50:34,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:34,986 INFO L93 Difference]: Finished difference Result 1672 states and 2206 transitions. [2020-07-21 12:50:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:50:34,986 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-21 12:50:34,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:35,000 INFO L225 Difference]: With dead ends: 1672 [2020-07-21 12:50:35,000 INFO L226 Difference]: Without dead ends: 1111 [2020-07-21 12:50:35,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:50:35,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2020-07-21 12:50:35,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1095. [2020-07-21 12:50:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-07-21 12:50:35,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1410 transitions. [2020-07-21 12:50:35,111 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1410 transitions. Word has length 79 [2020-07-21 12:50:35,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:35,111 INFO L479 AbstractCegarLoop]: Abstraction has 1095 states and 1410 transitions. [2020-07-21 12:50:35,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:35,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1410 transitions. [2020-07-21 12:50:35,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-21 12:50:35,118 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:35,119 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] [2020-07-21 12:50:35,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:35,334 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:35,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:35,335 INFO L82 PathProgramCache]: Analyzing trace with hash 547997666, now seen corresponding path program 1 times [2020-07-21 12:50:35,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:35,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205483169] [2020-07-21 12:50:35,337 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:35,598 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:35,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:35,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:50:35,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:35,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:35,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205483169] [2020-07-21 12:50:35,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:35,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:35,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169399022] [2020-07-21 12:50:35,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:35,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:35,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:35,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:35,642 INFO L87 Difference]: Start difference. First operand 1095 states and 1410 transitions. Second operand 6 states. [2020-07-21 12:50:35,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:35,734 INFO L93 Difference]: Finished difference Result 2206 states and 2920 transitions. [2020-07-21 12:50:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 12:50:35,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-07-21 12:50:35,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:35,745 INFO L225 Difference]: With dead ends: 2206 [2020-07-21 12:50:35,748 INFO L226 Difference]: Without dead ends: 1135 [2020-07-21 12:50:35,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 12:50:35,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2020-07-21 12:50:35,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1135. [2020-07-21 12:50:35,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1135 states. [2020-07-21 12:50:35,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1454 transitions. [2020-07-21 12:50:35,843 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1454 transitions. Word has length 83 [2020-07-21 12:50:35,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:35,843 INFO L479 AbstractCegarLoop]: Abstraction has 1135 states and 1454 transitions. [2020-07-21 12:50:35,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:35,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1454 transitions. [2020-07-21 12:50:35,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-21 12:50:35,851 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:35,852 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] [2020-07-21 12:50:36,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:36,065 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:36,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:36,066 INFO L82 PathProgramCache]: Analyzing trace with hash 570629920, now seen corresponding path program 1 times [2020-07-21 12:50:36,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:36,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741208825] [2020-07-21 12:50:36,067 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:36,290 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:36,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:36,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:50:36,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:36,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:36,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:36,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741208825] [2020-07-21 12:50:36,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:36,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 12:50:36,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305006800] [2020-07-21 12:50:36,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 12:50:36,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:36,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 12:50:36,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:50:36,336 INFO L87 Difference]: Start difference. First operand 1135 states and 1454 transitions. Second operand 5 states. [2020-07-21 12:50:36,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:36,402 INFO L93 Difference]: Finished difference Result 2210 states and 2912 transitions. [2020-07-21 12:50:36,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 12:50:36,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-07-21 12:50:36,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:36,440 INFO L225 Difference]: With dead ends: 2210 [2020-07-21 12:50:36,440 INFO L226 Difference]: Without dead ends: 1099 [2020-07-21 12:50:36,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:50:36,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2020-07-21 12:50:36,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1099. [2020-07-21 12:50:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-07-21 12:50:36,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1374 transitions. [2020-07-21 12:50:36,500 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1374 transitions. Word has length 83 [2020-07-21 12:50:36,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:36,501 INFO L479 AbstractCegarLoop]: Abstraction has 1099 states and 1374 transitions. [2020-07-21 12:50:36,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 12:50:36,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1374 transitions. [2020-07-21 12:50:36,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-21 12:50:36,503 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:36,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:36,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:36,719 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:36,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:36,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1146127589, now seen corresponding path program 1 times [2020-07-21 12:50:36,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:36,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588126433] [2020-07-21 12:50:36,721 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:36,992 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:36,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 12:50:36,992 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:50:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 12:50:37,095 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:50:37,349 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 12:50:37,349 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 12:50:37,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:37,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:50:37 BoogieIcfgContainer [2020-07-21 12:50:37,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 12:50:37,718 INFO L168 Benchmark]: Toolchain (without parser) took 9371.59 ms. Allocated memory was 138.9 MB in the beginning and 332.4 MB in the end (delta: 193.5 MB). Free memory was 101.3 MB in the beginning and 168.5 MB in the end (delta: -67.2 MB). Peak memory consumption was 126.2 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:37,719 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 138.9 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 12:50:37,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 816.01 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 172.3 MB in the end (delta: -71.4 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:37,720 INFO L168 Benchmark]: Boogie Preprocessor took 93.34 ms. Allocated memory is still 203.4 MB. Free memory was 172.3 MB in the beginning and 167.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:37,721 INFO L168 Benchmark]: RCFGBuilder took 1208.53 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 167.6 MB in the beginning and 198.0 MB in the end (delta: -30.4 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:37,721 INFO L168 Benchmark]: TraceAbstraction took 7248.43 ms. Allocated memory was 237.0 MB in the beginning and 332.4 MB in the end (delta: 95.4 MB). Free memory was 196.6 MB in the beginning and 168.5 MB in the end (delta: 28.0 MB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:37,725 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 138.9 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 816.01 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 172.3 MB in the end (delta: -71.4 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.34 ms. Allocated memory is still 203.4 MB. Free memory was 172.3 MB in the beginning and 167.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1208.53 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 167.6 MB in the beginning and 198.0 MB in the end (delta: -30.4 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7248.43 ms. Allocated memory was 237.0 MB in the beginning and 332.4 MB in the end (delta: 95.4 MB). Free memory was 196.6 MB in the beginning and 168.5 MB in the end (delta: 28.0 MB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L450] int waterLevel = 1; [L451] int methaneLevelCritical = 0; [L617] int pumpRunning = 0; [L618] int systemActive = 1; [L848] int cleanupTimeShifts = 4; VAL [\old(cleanupTimeShifts)=95, \old(head)=69, \old(head)=56, \old(methaneLevelCritical)=40, \old(pumpRunning)=88, \old(systemActive)=60, \old(waterLevel)=70, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L921] int retValue_acc ; [L922] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L926] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L927] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L928] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L839] int retValue_acc ; [L842] retValue_acc = 1 [L843] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L928] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L928] tmp = valid_product() [L930] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L932] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L933] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L915] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L557] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L559] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L565] tmp = __VERIFIER_nondet_int() [L567] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L569] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L468] COND TRUE waterLevel < 2 [L469] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L569] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L579] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L480] COND FALSE !(\read(methaneLevelCritical)) [L483] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L579] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=1, waterLevel=2] [L602] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L624] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L631] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L633] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L679] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L682] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L697] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L653] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L656] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L658] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L776] int retValue_acc ; [L777] int tmp ; [L778] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L782] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L530] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L533] COND FALSE !(waterLevel < 2) [L537] retValue_acc = 0 [L538] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L782] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L782] tmp = isHighWaterSensorDry() [L784] COND FALSE !(\read(tmp)) [L787] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L789] retValue_acc = tmp___0 [L790] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L658] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L658] tmp = isHighWaterLevel() [L660] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L662] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L707] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L662] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L697] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L633] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L639] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L410] int tmp ; [L411] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L415] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L415] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L415] tmp = isMethaneLevelCritical() [L417] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L419] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L731] int retValue_acc ; [L734] retValue_acc = pumpRunning [L735] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L419] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L419] tmp___0 = isPumpRunning() [L421] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L423] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L439] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1228 SDtfs, 382 SDslu, 2284 SDs, 0 SdLazy, 193 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 522 GetRequests, 498 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1135occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 33 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 612 NumberOfCodeBlocks, 612 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 517 ConstructedInterpolants, 0 QuantifiedInterpolants, 60733 SizeOfPredicates, 20 NumberOfNonLiveVariables, 5527 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...