/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_spec4_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:53:10,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:53:10,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:53:10,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:53:10,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:53:10,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:53:10,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:53:10,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:53:10,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:53:10,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:53:10,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:53:10,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:53:10,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:53:10,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:53:10,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:53:10,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:53:10,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:53:10,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:53:11,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:53:11,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:53:11,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:53:11,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:53:11,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:53:11,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:53:11,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 12:53:11,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 12:53:11,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 12:53:11,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 12:53:11,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 12:53:11,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 12:53:11,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 12:53:11,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 12:53:11,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 12:53:11,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 12:53:11,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 12:53:11,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 12:53:11,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 12:53:11,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 12:53:11,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:53:11,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:53:11,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:53:11,020 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 12:53:11,034 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:53:11,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:53:11,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:53:11,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:53:11,036 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:53:11,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:53:11,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:53:11,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:53:11,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:53:11,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:53:11,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:53:11,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:53:11,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:53:11,038 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:53:11,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:53:11,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:53:11,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:53:11,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:53:11,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:53:11,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:53:11,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:53:11,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:53:11,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:53:11,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:53:11,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:53:11,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:53:11,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:11,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:53:11,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:53:11,042 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 12:53:11,345 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:53:11,361 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:53:11,366 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:53:11,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:53:11,367 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:53:11,368 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-07-21 12:53:11,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae5aeec69/bdd8a54bf6e74d67800815ad3840ade1/FLAG7c70d0091 [2020-07-21 12:53:12,043 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:53:12,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-07-21 12:53:12,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae5aeec69/bdd8a54bf6e74d67800815ad3840ade1/FLAG7c70d0091 [2020-07-21 12:53:12,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae5aeec69/bdd8a54bf6e74d67800815ad3840ade1 [2020-07-21 12:53:12,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:53:12,316 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:53:12,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:53:12,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:53:12,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:53:12,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:53:12" (1/1) ... [2020-07-21 12:53:12,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74274924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:12, skipping insertion in model container [2020-07-21 12:53:12,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:53:12" (1/1) ... [2020-07-21 12:53:12,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:53:12,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:53:12,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:53:12,881 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:53:12,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:53:13,006 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:53:13,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:13 WrapperNode [2020-07-21 12:53:13,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:53:13,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:53:13,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:53:13,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:53:13,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:13" (1/1) ... [2020-07-21 12:53:13,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:13" (1/1) ... [2020-07-21 12:53:13,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:13" (1/1) ... [2020-07-21 12:53:13,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:13" (1/1) ... [2020-07-21 12:53:13,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:13" (1/1) ... [2020-07-21 12:53:13,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:13" (1/1) ... [2020-07-21 12:53:13,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:13" (1/1) ... [2020-07-21 12:53:13,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:53:13,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:53:13,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:53:13,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:53:13,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:13" (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 12:53:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:53:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:53:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 12:53:13,164 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 12:53:13,164 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 12:53:13,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 12:53:13,165 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 12:53:13,165 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:53:13,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-07-21 12:53:13,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 12:53:13,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 12:53:13,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 12:53:13,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 12:53:13,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 12:53:13,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 12:53:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 12:53:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 12:53:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 12:53:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-07-21 12:53:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 12:53:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-07-21 12:53:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 12:53:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 12:53:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 12:53:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 12:53:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 12:53:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 12:53:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-21 12:53:13,171 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 12:53:13,171 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 12:53:13,171 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 12:53:13,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 12:53:13,171 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 12:53:13,171 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 12:53:13,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 12:53:13,172 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 12:53:13,172 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 12:53:13,172 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 12:53:13,172 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 12:53:13,172 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 12:53:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:53:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 12:53:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 12:53:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 12:53:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 12:53:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 12:53:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 12:53:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 12:53:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 12:53:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 12:53:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 12:53:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 12:53:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 12:53:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 12:53:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 12:53:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:53:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 12:53:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 12:53:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 12:53:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-07-21 12:53:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 12:53:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 12:53:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 12:53:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 12:53:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 12:53:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 12:53:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 12:53:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 12:53:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 12:53:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 12:53:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 12:53:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 12:53:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 12:53:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 12:53:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 12:53:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 12:53:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 12:53:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 12:53:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 12:53:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 12:53:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 12:53:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 12:53:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 12:53:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-21 12:53:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 12:53:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 12:53:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 12:53:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-07-21 12:53:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 12:53:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-07-21 12:53:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 12:53:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:53:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 12:53:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:53:14,295 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:53:14,296 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 12:53:14,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:53:14 BoogieIcfgContainer [2020-07-21 12:53:14,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:53:14,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:53:14,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:53:14,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:53:14,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:53:12" (1/3) ... [2020-07-21 12:53:14,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26fc830f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:53:14, skipping insertion in model container [2020-07-21 12:53:14,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:13" (2/3) ... [2020-07-21 12:53:14,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26fc830f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:53:14, skipping insertion in model container [2020-07-21 12:53:14,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:53:14" (3/3) ... [2020-07-21 12:53:14,310 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2020-07-21 12:53:14,321 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:53:14,330 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:53:14,341 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:53:14,362 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:53:14,362 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:53:14,362 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:53:14,362 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:53:14,363 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:53:14,363 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:53:14,363 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:53:14,363 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:53:14,395 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2020-07-21 12:53:14,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 12:53:14,405 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:14,407 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 12:53:14,407 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:14,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:14,414 INFO L82 PathProgramCache]: Analyzing trace with hash 580316159, now seen corresponding path program 1 times [2020-07-21 12:53:14,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:14,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484400377] [2020-07-21 12:53:14,422 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 12:53:14,819 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:14,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:14,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:53:14,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:14,866 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 12:53:14,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:14,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484400377] [2020-07-21 12:53:14,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:14,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:53:14,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507364970] [2020-07-21 12:53:14,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:53:14,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:14,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:53:14,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:53:14,897 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 2 states. [2020-07-21 12:53:14,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:14,960 INFO L93 Difference]: Finished difference Result 274 states and 337 transitions. [2020-07-21 12:53:14,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:53:14,963 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 12:53:14,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:14,979 INFO L225 Difference]: With dead ends: 274 [2020-07-21 12:53:14,979 INFO L226 Difference]: Without dead ends: 137 [2020-07-21 12:53:14,985 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 12:53:15,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-07-21 12:53:15,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-07-21 12:53:15,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-07-21 12:53:15,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2020-07-21 12:53:15,050 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 46 [2020-07-21 12:53:15,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:15,051 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2020-07-21 12:53:15,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:53:15,051 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2020-07-21 12:53:15,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 12:53:15,055 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:15,055 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 12:53:15,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:15,270 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:15,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:15,271 INFO L82 PathProgramCache]: Analyzing trace with hash -2039927443, now seen corresponding path program 1 times [2020-07-21 12:53:15,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:15,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434734476] [2020-07-21 12:53:15,273 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 12:53:15,659 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:15,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:15,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:53:15,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:15,700 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 12:53:15,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:15,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434734476] [2020-07-21 12:53:15,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:15,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:53:15,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965375698] [2020-07-21 12:53:15,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:53:15,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:15,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:53:15,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:53:15,704 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 3 states. [2020-07-21 12:53:15,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:15,727 INFO L93 Difference]: Finished difference Result 219 states and 255 transitions. [2020-07-21 12:53:15,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:53:15,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 12:53:15,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:15,730 INFO L225 Difference]: With dead ends: 219 [2020-07-21 12:53:15,730 INFO L226 Difference]: Without dead ends: 128 [2020-07-21 12:53:15,732 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 12:53:15,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-21 12:53:15,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-07-21 12:53:15,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-21 12:53:15,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2020-07-21 12:53:15,753 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 47 [2020-07-21 12:53:15,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:15,753 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2020-07-21 12:53:15,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:53:15,753 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2020-07-21 12:53:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 12:53:15,758 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:15,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:53:15,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:15,960 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:15,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:15,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1891987703, now seen corresponding path program 1 times [2020-07-21 12:53:15,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:15,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518341099] [2020-07-21 12:53:15,962 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 12:53:16,299 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:16,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:16,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 12:53:16,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:16,333 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 12:53:16,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:16,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518341099] [2020-07-21 12:53:16,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:16,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:53:16,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371883019] [2020-07-21 12:53:16,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:53:16,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:16,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:53:16,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:53:16,336 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 3 states. [2020-07-21 12:53:16,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:16,358 INFO L93 Difference]: Finished difference Result 232 states and 273 transitions. [2020-07-21 12:53:16,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:53:16,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-21 12:53:16,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:16,361 INFO L225 Difference]: With dead ends: 232 [2020-07-21 12:53:16,361 INFO L226 Difference]: Without dead ends: 128 [2020-07-21 12:53:16,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 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 12:53:16,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-21 12:53:16,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-07-21 12:53:16,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-21 12:53:16,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2020-07-21 12:53:16,377 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 52 [2020-07-21 12:53:16,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:16,377 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2020-07-21 12:53:16,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:53:16,378 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2020-07-21 12:53:16,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-21 12:53:16,380 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:16,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:53:16,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:16,594 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:16,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:16,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1745786735, now seen corresponding path program 1 times [2020-07-21 12:53:16,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:16,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576468108] [2020-07-21 12:53:16,597 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 12:53:16,953 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:16,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:16,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 12:53:16,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:17,007 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 12:53:17,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:17,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576468108] [2020-07-21 12:53:17,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:17,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:53:17,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224941392] [2020-07-21 12:53:17,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:53:17,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:17,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:53:17,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:53:17,010 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 6 states. [2020-07-21 12:53:17,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:17,253 INFO L93 Difference]: Finished difference Result 325 states and 395 transitions. [2020-07-21 12:53:17,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 12:53:17,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-07-21 12:53:17,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:17,258 INFO L225 Difference]: With dead ends: 325 [2020-07-21 12:53:17,259 INFO L226 Difference]: Without dead ends: 221 [2020-07-21 12:53:17,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 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 12:53:17,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-07-21 12:53:17,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2020-07-21 12:53:17,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-07-21 12:53:17,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 266 transitions. [2020-07-21 12:53:17,285 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 266 transitions. Word has length 65 [2020-07-21 12:53:17,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:17,286 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 266 transitions. [2020-07-21 12:53:17,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:53:17,286 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 266 transitions. [2020-07-21 12:53:17,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-21 12:53:17,289 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:17,290 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] [2020-07-21 12:53:17,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:17,503 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:17,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:17,503 INFO L82 PathProgramCache]: Analyzing trace with hash 998090891, now seen corresponding path program 1 times [2020-07-21 12:53:17,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:17,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403881217] [2020-07-21 12:53:17,504 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 12:53:17,819 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:17,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:17,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 12:53:17,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:17,884 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 12:53:17,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:17,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403881217] [2020-07-21 12:53:17,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:17,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:53:17,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100134245] [2020-07-21 12:53:17,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:53:17,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:17,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:53:17,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:53:17,887 INFO L87 Difference]: Start difference. First operand 221 states and 266 transitions. Second operand 6 states. [2020-07-21 12:53:18,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:18,487 INFO L93 Difference]: Finished difference Result 541 states and 675 transitions. [2020-07-21 12:53:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:53:18,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-07-21 12:53:18,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:18,498 INFO L225 Difference]: With dead ends: 541 [2020-07-21 12:53:18,498 INFO L226 Difference]: Without dead ends: 344 [2020-07-21 12:53:18,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 12:53:18,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-07-21 12:53:18,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 328. [2020-07-21 12:53:18,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-07-21 12:53:18,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 380 transitions. [2020-07-21 12:53:18,553 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 380 transitions. Word has length 69 [2020-07-21 12:53:18,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:18,553 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 380 transitions. [2020-07-21 12:53:18,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:53:18,554 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 380 transitions. [2020-07-21 12:53:18,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-21 12:53:18,561 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:18,562 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:53:18,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:18,777 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:18,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:18,778 INFO L82 PathProgramCache]: Analyzing trace with hash -205804435, now seen corresponding path program 1 times [2020-07-21 12:53:18,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:18,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987371019] [2020-07-21 12:53:18,780 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 12:53:19,074 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:19,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:19,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:53:19,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 12:53:19,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:19,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987371019] [2020-07-21 12:53:19,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:19,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 12:53:19,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104813659] [2020-07-21 12:53:19,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 12:53:19,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:19,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 12:53:19,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:53:19,157 INFO L87 Difference]: Start difference. First operand 328 states and 380 transitions. Second operand 5 states. [2020-07-21 12:53:19,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:19,195 INFO L93 Difference]: Finished difference Result 639 states and 758 transitions. [2020-07-21 12:53:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 12:53:19,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-07-21 12:53:19,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:19,198 INFO L225 Difference]: With dead ends: 639 [2020-07-21 12:53:19,199 INFO L226 Difference]: Without dead ends: 335 [2020-07-21 12:53:19,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 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 12:53:19,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-07-21 12:53:19,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2020-07-21 12:53:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-07-21 12:53:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 386 transitions. [2020-07-21 12:53:19,221 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 386 transitions. Word has length 143 [2020-07-21 12:53:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:19,222 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 386 transitions. [2020-07-21 12:53:19,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 12:53:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 386 transitions. [2020-07-21 12:53:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-21 12:53:19,224 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:19,224 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:53:19,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:19,438 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:19,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:19,439 INFO L82 PathProgramCache]: Analyzing trace with hash 677704555, now seen corresponding path program 1 times [2020-07-21 12:53:19,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:19,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382872090] [2020-07-21 12:53:19,441 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 12:53:19,807 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:19,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:19,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 29 conjunts are in the unsatisfiable core [2020-07-21 12:53:19,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 12:53:19,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:19,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382872090] [2020-07-21 12:53:19,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:19,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 12:53:19,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171265289] [2020-07-21 12:53:19,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 12:53:19,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:19,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 12:53:19,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:53:19,899 INFO L87 Difference]: Start difference. First operand 335 states and 386 transitions. Second operand 8 states. [2020-07-21 12:53:20,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:20,424 INFO L93 Difference]: Finished difference Result 948 states and 1110 transitions. [2020-07-21 12:53:20,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 12:53:20,424 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-07-21 12:53:20,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:20,429 INFO L225 Difference]: With dead ends: 948 [2020-07-21 12:53:20,429 INFO L226 Difference]: Without dead ends: 637 [2020-07-21 12:53:20,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:53:20,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2020-07-21 12:53:20,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 634. [2020-07-21 12:53:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-07-21 12:53:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 734 transitions. [2020-07-21 12:53:20,468 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 734 transitions. Word has length 143 [2020-07-21 12:53:20,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:20,469 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 734 transitions. [2020-07-21 12:53:20,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 12:53:20,469 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 734 transitions. [2020-07-21 12:53:20,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-21 12:53:20,472 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:20,472 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:53:20,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:20,687 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:20,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:20,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1825211087, now seen corresponding path program 1 times [2020-07-21 12:53:20,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:20,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133165441] [2020-07-21 12:53:20,689 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 12:53:20,937 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:20,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:20,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 12:53:20,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 12:53:21,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:21,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133165441] [2020-07-21 12:53:21,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:21,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 12:53:21,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497549901] [2020-07-21 12:53:21,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 12:53:21,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:21,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 12:53:21,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:53:21,027 INFO L87 Difference]: Start difference. First operand 634 states and 734 transitions. Second operand 8 states. [2020-07-21 12:53:21,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:21,555 INFO L93 Difference]: Finished difference Result 1206 states and 1409 transitions. [2020-07-21 12:53:21,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 12:53:21,555 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-07-21 12:53:21,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:21,560 INFO L225 Difference]: With dead ends: 1206 [2020-07-21 12:53:21,560 INFO L226 Difference]: Without dead ends: 596 [2020-07-21 12:53:21,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:53:21,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-07-21 12:53:21,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 593. [2020-07-21 12:53:21,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-07-21 12:53:21,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 676 transitions. [2020-07-21 12:53:21,602 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 676 transitions. Word has length 147 [2020-07-21 12:53:21,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:21,602 INFO L479 AbstractCegarLoop]: Abstraction has 593 states and 676 transitions. [2020-07-21 12:53:21,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 12:53:21,603 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 676 transitions. [2020-07-21 12:53:21,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-21 12:53:21,605 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:21,606 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:53:21,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:21,820 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:21,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:21,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1680687239, now seen corresponding path program 2 times [2020-07-21 12:53:21,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:21,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907662742] [2020-07-21 12:53:21,822 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 12:53:22,159 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:22,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:22,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:53:22,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 12:53:22,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:22,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907662742] [2020-07-21 12:53:22,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:22,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:53:22,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66493182] [2020-07-21 12:53:22,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:53:22,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:22,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:53:22,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:53:22,210 INFO L87 Difference]: Start difference. First operand 593 states and 676 transitions. Second operand 6 states. [2020-07-21 12:53:22,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:22,254 INFO L93 Difference]: Finished difference Result 1133 states and 1330 transitions. [2020-07-21 12:53:22,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 12:53:22,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2020-07-21 12:53:22,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:22,258 INFO L225 Difference]: With dead ends: 1133 [2020-07-21 12:53:22,258 INFO L226 Difference]: Without dead ends: 564 [2020-07-21 12:53:22,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 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 12:53:22,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-07-21 12:53:22,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 560. [2020-07-21 12:53:22,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-07-21 12:53:22,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 641 transitions. [2020-07-21 12:53:22,290 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 641 transitions. Word has length 147 [2020-07-21 12:53:22,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:22,291 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 641 transitions. [2020-07-21 12:53:22,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:53:22,291 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 641 transitions. [2020-07-21 12:53:22,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-21 12:53:22,293 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:22,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:53:22,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:22,508 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:22,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:22,509 INFO L82 PathProgramCache]: Analyzing trace with hash 480703498, now seen corresponding path program 1 times [2020-07-21 12:53:22,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:22,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936797434] [2020-07-21 12:53:22,510 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:22,701 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 12:53:22,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:22,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 12:53:22,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:53:22,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:22,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936797434] [2020-07-21 12:53:22,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:22,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:53:22,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141113496] [2020-07-21 12:53:22,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:53:22,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:22,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:53:22,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:53:22,767 INFO L87 Difference]: Start difference. First operand 560 states and 641 transitions. Second operand 6 states. [2020-07-21 12:53:23,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:23,543 INFO L93 Difference]: Finished difference Result 1511 states and 1833 transitions. [2020-07-21 12:53:23,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:53:23,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2020-07-21 12:53:23,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:23,554 INFO L225 Difference]: With dead ends: 1511 [2020-07-21 12:53:23,556 INFO L226 Difference]: Without dead ends: 975 [2020-07-21 12:53:23,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 12:53:23,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-07-21 12:53:23,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 946. [2020-07-21 12:53:23,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 946 states. [2020-07-21 12:53:23,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1103 transitions. [2020-07-21 12:53:23,634 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1103 transitions. Word has length 147 [2020-07-21 12:53:23,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:23,635 INFO L479 AbstractCegarLoop]: Abstraction has 946 states and 1103 transitions. [2020-07-21 12:53:23,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:53:23,635 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1103 transitions. [2020-07-21 12:53:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-07-21 12:53:23,639 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:23,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:53:23,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:23,853 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:23,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:23,853 INFO L82 PathProgramCache]: Analyzing trace with hash 857110512, now seen corresponding path program 1 times [2020-07-21 12:53:23,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:23,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945725143] [2020-07-21 12:53:23,854 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:24,104 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:24,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:24,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:53:24,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:53:24,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:53:24,653 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-21 12:53:24,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945725143] [2020-07-21 12:53:24,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:53:24,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-07-21 12:53:24,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114068739] [2020-07-21 12:53:24,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 12:53:24,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:24,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 12:53:24,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-21 12:53:24,655 INFO L87 Difference]: Start difference. First operand 946 states and 1103 transitions. Second operand 12 states. [2020-07-21 12:53:26,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:26,160 INFO L93 Difference]: Finished difference Result 2492 states and 3107 transitions. [2020-07-21 12:53:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 12:53:26,161 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 151 [2020-07-21 12:53:26,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:26,171 INFO L225 Difference]: With dead ends: 2492 [2020-07-21 12:53:26,171 INFO L226 Difference]: Without dead ends: 1570 [2020-07-21 12:53:26,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 290 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-07-21 12:53:26,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2020-07-21 12:53:26,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1231. [2020-07-21 12:53:26,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2020-07-21 12:53:26,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1418 transitions. [2020-07-21 12:53:26,277 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1418 transitions. Word has length 151 [2020-07-21 12:53:26,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:26,279 INFO L479 AbstractCegarLoop]: Abstraction has 1231 states and 1418 transitions. [2020-07-21 12:53:26,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 12:53:26,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1418 transitions. [2020-07-21 12:53:26,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-07-21 12:53:26,283 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:26,283 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:53:26,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:26,499 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:26,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:26,500 INFO L82 PathProgramCache]: Analyzing trace with hash -477217899, now seen corresponding path program 1 times [2020-07-21 12:53:26,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:26,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016865560] [2020-07-21 12:53:26,501 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:26,785 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:26,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:26,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 12:53:26,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:26,890 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 12:53:26,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:26,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016865560] [2020-07-21 12:53:26,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:26,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 12:53:26,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697800769] [2020-07-21 12:53:26,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 12:53:26,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:26,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 12:53:26,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:53:26,892 INFO L87 Difference]: Start difference. First operand 1231 states and 1418 transitions. Second operand 8 states. [2020-07-21 12:53:27,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:27,340 INFO L93 Difference]: Finished difference Result 2190 states and 2546 transitions. [2020-07-21 12:53:27,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 12:53:27,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 203 [2020-07-21 12:53:27,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:27,348 INFO L225 Difference]: With dead ends: 2190 [2020-07-21 12:53:27,348 INFO L226 Difference]: Without dead ends: 1105 [2020-07-21 12:53:27,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:53:27,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-07-21 12:53:27,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1102. [2020-07-21 12:53:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-07-21 12:53:27,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1267 transitions. [2020-07-21 12:53:27,426 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1267 transitions. Word has length 203 [2020-07-21 12:53:27,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:27,426 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1267 transitions. [2020-07-21 12:53:27,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 12:53:27,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1267 transitions. [2020-07-21 12:53:27,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-07-21 12:53:27,431 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:27,431 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:53:27,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:27,647 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:27,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:27,648 INFO L82 PathProgramCache]: Analyzing trace with hash 589477653, now seen corresponding path program 2 times [2020-07-21 12:53:27,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:27,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564536803] [2020-07-21 12:53:27,649 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:27,984 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:27,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:27,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:53:27,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-07-21 12:53:28,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:28,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564536803] [2020-07-21 12:53:28,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:28,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:53:28,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382332562] [2020-07-21 12:53:28,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:53:28,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:28,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:53:28,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:53:28,044 INFO L87 Difference]: Start difference. First operand 1102 states and 1267 transitions. Second operand 6 states. [2020-07-21 12:53:28,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:28,307 INFO L93 Difference]: Finished difference Result 1115 states and 1282 transitions. [2020-07-21 12:53:28,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:53:28,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-07-21 12:53:28,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:28,315 INFO L225 Difference]: With dead ends: 1115 [2020-07-21 12:53:28,315 INFO L226 Difference]: Without dead ends: 1112 [2020-07-21 12:53:28,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 199 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 12:53:28,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2020-07-21 12:53:28,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1102. [2020-07-21 12:53:28,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-07-21 12:53:28,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1264 transitions. [2020-07-21 12:53:28,381 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1264 transitions. Word has length 203 [2020-07-21 12:53:28,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:28,384 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1264 transitions. [2020-07-21 12:53:28,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:53:28,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1264 transitions. [2020-07-21 12:53:28,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-07-21 12:53:28,388 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:28,389 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:53:28,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:28,602 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:28,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:28,602 INFO L82 PathProgramCache]: Analyzing trace with hash -939199605, now seen corresponding path program 1 times [2020-07-21 12:53:28,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:28,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559578433] [2020-07-21 12:53:28,603 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:28,925 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:28,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 12:53:28,926 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:53:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 12:53:29,032 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:53:29,542 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 12:53:29,542 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 12:53:29,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:30,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:53:30 BoogieIcfgContainer [2020-07-21 12:53:30,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 12:53:30,042 INFO L168 Benchmark]: Toolchain (without parser) took 17726.52 ms. Allocated memory was 145.2 MB in the beginning and 445.6 MB in the end (delta: 300.4 MB). Free memory was 100.4 MB in the beginning and 335.9 MB in the end (delta: -235.5 MB). Peak memory consumption was 272.6 MB. Max. memory is 7.1 GB. [2020-07-21 12:53:30,044 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 12:53:30,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.83 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 100.0 MB in the beginning and 168.9 MB in the end (delta: -69.0 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-07-21 12:53:30,056 INFO L168 Benchmark]: Boogie Preprocessor took 88.69 ms. Allocated memory is still 201.9 MB. Free memory was 168.9 MB in the beginning and 164.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-07-21 12:53:30,058 INFO L168 Benchmark]: RCFGBuilder took 1204.58 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 164.3 MB in the beginning and 192.8 MB in the end (delta: -28.5 MB). Peak memory consumption was 82.4 MB. Max. memory is 7.1 GB. [2020-07-21 12:53:30,059 INFO L168 Benchmark]: TraceAbstraction took 15736.57 ms. Allocated memory was 234.9 MB in the beginning and 445.6 MB in the end (delta: 210.8 MB). Free memory was 192.8 MB in the beginning and 335.9 MB in the end (delta: -143.1 MB). Peak memory consumption was 275.4 MB. Max. memory is 7.1 GB. [2020-07-21 12:53:30,064 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 689.83 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 100.0 MB in the beginning and 168.9 MB in the end (delta: -69.0 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.69 ms. Allocated memory is still 201.9 MB. Free memory was 168.9 MB in the beginning and 164.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1204.58 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 164.3 MB in the beginning and 192.8 MB in the end (delta: -28.5 MB). Peak memory consumption was 82.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15736.57 ms. Allocated memory was 234.9 MB in the beginning and 445.6 MB in the end (delta: 210.8 MB). Free memory was 192.8 MB in the beginning and 335.9 MB in the end (delta: -143.1 MB). Peak memory consumption was 275.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 543]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L758] int waterLevel = 1; [L759] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=68, \old(head)=35, \old(head)=29, \old(methaneLevelCritical)=64, \old(pumpRunning)=76, \old(systemActive)=34, \old(waterLevel)=36, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L121] int retValue_acc ; [L122] 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] [L126] 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] [L127] 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] [L128] 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] [L945] int retValue_acc ; [L948] retValue_acc = 1 [L949] 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] [L128] 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] [L128] tmp = valid_product() [L130] 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] [L132] 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] [L133] 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] [L112] 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] [L853] int splverifierCounter ; [L854] int tmp ; [L855] int tmp___0 ; [L856] int tmp___1 ; [L857] int tmp___2 ; [L860] 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] [L862] 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] [L864] 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] [L870] tmp = __VERIFIER_nondet_int() [L872] 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] [L874] 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] [L776] COND TRUE waterLevel < 2 [L777] 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] [L874] 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] [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\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=0, waterLevel=2] [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___2)) [L898] tmp___1 = __VERIFIER_nondet_int() [L900] COND TRUE \read(tmp___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, tmp=-1, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L907] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L562] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L569] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L571] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L617] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L620] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L635] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L591] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L594] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L731] int retValue_acc ; [L732] int tmp ; [L733] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L737] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L838] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L841] COND FALSE !(waterLevel < 2) [L845] retValue_acc = 0 [L846] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L737] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L737] tmp = isHighWaterSensorDry() [L739] COND FALSE !(\read(tmp)) [L742] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L744] retValue_acc = tmp___0 [L745] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L596] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L600] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L650] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L654] CALL, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L675] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L679] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L679] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L654] RET, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L654] tmp = isMethaneAlarm() [L656] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L660] CALL activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L645] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L660] RET activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L600] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L635] RET processEnvironment__wrappee__methaneQuery() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L571] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L577] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L148] int tmp ; [L149] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L153] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L153] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L153] tmp = getWaterLevel() [L155] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L577] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L907] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L862] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L864] 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=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L870] tmp = __VERIFIER_nondet_int() [L872] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___2)) [L898] tmp___1 = __VERIFIER_nondet_int() [L900] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L907] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L562] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L564] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L764] COND TRUE waterLevel > 0 [L765] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L564] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L569] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L571] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L617] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L620] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L622] CALL, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L675] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L679] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L679] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L622] RET, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L622] tmp = isMethaneAlarm() [L624] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L630] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L591] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L594] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L609] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L630] RET processEnvironment__wrappee__methaneQuery() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L571] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L577] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L148] int tmp ; [L149] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L153] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L153] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=1, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L153] tmp = getWaterLevel() [L155] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L577] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L907] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L862] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L864] 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=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L870] tmp = __VERIFIER_nondet_int() [L872] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___2)) [L898] tmp___1 = __VERIFIER_nondet_int() [L900] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=1] [L907] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L562] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L564] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L764] COND TRUE waterLevel > 0 [L765] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L564] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L569] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L571] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L617] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L620] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L622] CALL, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L675] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L679] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L679] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L622] RET, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L622] tmp = isMethaneAlarm() [L624] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L630] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L591] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L594] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L609] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L630] RET processEnvironment__wrappee__methaneQuery() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L571] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L577] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L148] int tmp ; [L149] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L153] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L153] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, getWaterLevel()=0, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L153] tmp = getWaterLevel() [L155] COND TRUE tmp == 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L157] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L686] int retValue_acc ; [L689] retValue_acc = pumpRunning [L690] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L157] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L157] tmp___0 = isPumpRunning() [L159] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=0] [L161] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L543] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 236 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.3s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2288 SDtfs, 1409 SDslu, 5429 SDs, 0 SdLazy, 2648 SolverSat, 559 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1727 GetRequests, 1648 SyntacticMatches, 8 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1231occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 407 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1766 NumberOfCodeBlocks, 1693 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1700 ConstructedInterpolants, 0 QuantifiedInterpolants, 411090 SizeOfPredicates, 43 NumberOfNonLiveVariables, 10558 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 438/459 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...