/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_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:53:17,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:53:17,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:53:17,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:53:17,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:53:17,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:53:17,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:53:17,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:53:17,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:53:17,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:53:17,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:53:17,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:53:17,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:53:17,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:53:17,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:53:17,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:53:17,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:53:17,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:53:17,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:53:17,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:53:17,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:53:17,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:53:17,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:53:18,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:53:18,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 12:53:18,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 12:53:18,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 12:53:18,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 12:53:18,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 12:53:18,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 12:53:18,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 12:53:18,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 12:53:18,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 12:53:18,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 12:53:18,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 12:53:18,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 12:53:18,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 12:53:18,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 12:53:18,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:53:18,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:53:18,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:53:18,016 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 12:53:18,038 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:53:18,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:53:18,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:53:18,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:53:18,043 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:53:18,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:53:18,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:53:18,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:53:18,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:53:18,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:53:18,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:53:18,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:53:18,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:53:18,046 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:53:18,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:53:18,046 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:53:18,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:53:18,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:53:18,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:53:18,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:53:18,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:53:18,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:53:18,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:53:18,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:53:18,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:53:18,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:53:18,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:18,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:53:18,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:53:18,049 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 12:53:18,325 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:53:18,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:53:18,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:53:18,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:53:18,344 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:53:18,345 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product48.cil.c [2020-07-21 12:53:18,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17f6acaca/bcd4ea57f26f4f459337c19eec12be57/FLAGb182ee7f6 [2020-07-21 12:53:18,886 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:53:18,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product48.cil.c [2020-07-21 12:53:18,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17f6acaca/bcd4ea57f26f4f459337c19eec12be57/FLAGb182ee7f6 [2020-07-21 12:53:19,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17f6acaca/bcd4ea57f26f4f459337c19eec12be57 [2020-07-21 12:53:19,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:53:19,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:53:19,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:53:19,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:53:19,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:53:19,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:53:19" (1/1) ... [2020-07-21 12:53:19,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57fa8424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:19, skipping insertion in model container [2020-07-21 12:53:19,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:53:19" (1/1) ... [2020-07-21 12:53:19,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:53:19,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:53:19,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:53:19,749 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:53:19,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:53:19,952 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:53:19,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:19 WrapperNode [2020-07-21 12:53:19,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:53:19,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:53:19,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:53:19,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:53:19,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:19" (1/1) ... [2020-07-21 12:53:19,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:19" (1/1) ... [2020-07-21 12:53:19,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:19" (1/1) ... [2020-07-21 12:53:19,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:19" (1/1) ... [2020-07-21 12:53:20,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:19" (1/1) ... [2020-07-21 12:53:20,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:19" (1/1) ... [2020-07-21 12:53:20,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:19" (1/1) ... [2020-07-21 12:53:20,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:53:20,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:53:20,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:53:20,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:53:20,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:19" (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 12:53:20,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:53:20,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:53:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 12:53:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-07-21 12:53:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 12:53:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 12:53:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 12:53:20,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 12:53:20,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 12:53:20,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 12:53:20,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 12:53:20,154 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 12:53:20,154 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 12:53:20,155 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 12:53:20,155 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 12:53:20,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:53:20,156 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 12:53:20,156 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 12:53:20,156 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-07-21 12:53:20,156 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 12:53:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-07-21 12:53:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 12:53:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 12:53:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 12:53:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 12:53:20,158 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 12:53:20,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 12:53:20,158 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-21 12:53:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-21 12:53:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 12:53:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 12:53:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 12:53:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 12:53:20,160 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 12:53:20,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 12:53:20,160 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 12:53:20,160 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 12:53:20,160 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 12:53:20,160 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 12:53:20,161 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 12:53:20,161 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 12:53:20,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:53:20,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 12:53:20,161 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 12:53:20,161 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 12:53:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 12:53:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 12:53:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-07-21 12:53:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 12:53:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 12:53:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 12:53:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 12:53:20,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 12:53:20,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 12:53:20,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 12:53:20,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 12:53:20,163 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 12:53:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 12:53:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 12:53:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 12:53:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 12:53:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 12:53:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 12:53:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 12:53:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 12:53:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 12:53:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 12:53:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 12:53:20,166 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 12:53:20,166 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 12:53:20,166 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 12:53:20,166 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 12:53:20,167 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 12:53:20,167 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 12:53:20,167 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 12:53:20,168 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 12:53:20,168 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 12:53:20,168 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:53:20,169 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 12:53:20,169 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 12:53:20,169 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 12:53:20,169 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 12:53:20,170 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 12:53:20,170 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 12:53:20,170 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-21 12:53:20,170 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-21 12:53:20,171 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 12:53:20,171 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 12:53:20,171 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 12:53:20,171 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-07-21 12:53:20,171 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 12:53:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-07-21 12:53:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 12:53:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:53:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 12:53:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:53:23,521 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:53:23,521 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 12:53:23,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:53:23 BoogieIcfgContainer [2020-07-21 12:53:23,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:53:23,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:53:23,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:53:23,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:53:23,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:53:19" (1/3) ... [2020-07-21 12:53:23,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cefa5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:53:23, skipping insertion in model container [2020-07-21 12:53:23,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:53:19" (2/3) ... [2020-07-21 12:53:23,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cefa5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:53:23, skipping insertion in model container [2020-07-21 12:53:23,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:53:23" (3/3) ... [2020-07-21 12:53:23,539 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product48.cil.c [2020-07-21 12:53:23,549 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:53:23,560 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:53:23,576 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:53:23,597 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:53:23,597 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:53:23,597 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:53:23,597 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:53:23,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:53:23,597 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:53:23,598 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:53:23,598 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:53:23,621 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-07-21 12:53:23,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 12:53:23,631 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:23,633 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 12:53:23,633 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:23,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:23,640 INFO L82 PathProgramCache]: Analyzing trace with hash 267821041, now seen corresponding path program 1 times [2020-07-21 12:53:23,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:23,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127791420] [2020-07-21 12:53:23,649 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 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 12:53:24,026 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:24,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:24,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:53:24,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:24,070 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 12:53:24,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:24,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127791420] [2020-07-21 12:53:24,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:24,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:53:24,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646636122] [2020-07-21 12:53:24,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:53:24,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:24,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:53:24,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:53:24,101 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 2 states. [2020-07-21 12:53:24,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:24,149 INFO L93 Difference]: Finished difference Result 286 states and 353 transitions. [2020-07-21 12:53:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:53:24,151 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 12:53:24,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:24,166 INFO L225 Difference]: With dead ends: 286 [2020-07-21 12:53:24,166 INFO L226 Difference]: Without dead ends: 143 [2020-07-21 12:53:24,171 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 12:53:24,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-07-21 12:53:24,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-07-21 12:53:24,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-07-21 12:53:24,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2020-07-21 12:53:24,240 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 46 [2020-07-21 12:53:24,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:24,241 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2020-07-21 12:53:24,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:53:24,242 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2020-07-21 12:53:24,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 12:53:24,246 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:24,246 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 12:53:24,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:24,460 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:24,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:24,461 INFO L82 PathProgramCache]: Analyzing trace with hash -395653053, now seen corresponding path program 1 times [2020-07-21 12:53:24,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:24,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244219245] [2020-07-21 12:53:24,463 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 12:53:24,793 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:24,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:24,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:53:24,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:24,841 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 12:53:24,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:24,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244219245] [2020-07-21 12:53:24,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:24,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:53:24,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205832318] [2020-07-21 12:53:24,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:53:24,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:24,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:53:24,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:53:24,845 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 3 states. [2020-07-21 12:53:24,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:24,868 INFO L93 Difference]: Finished difference Result 225 states and 263 transitions. [2020-07-21 12:53:24,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:53:24,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 12:53:24,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:24,872 INFO L225 Difference]: With dead ends: 225 [2020-07-21 12:53:24,872 INFO L226 Difference]: Without dead ends: 134 [2020-07-21 12:53:24,874 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 12:53:24,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-07-21 12:53:24,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-07-21 12:53:24,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-07-21 12:53:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 156 transitions. [2020-07-21 12:53:24,889 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 156 transitions. Word has length 47 [2020-07-21 12:53:24,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:24,890 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 156 transitions. [2020-07-21 12:53:24,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:53:24,890 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 156 transitions. [2020-07-21 12:53:24,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 12:53:24,893 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:24,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:53:25,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:25,108 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:25,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:25,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1814461049, now seen corresponding path program 1 times [2020-07-21 12:53:25,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:25,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42896185] [2020-07-21 12:53:25,109 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 12:53:25,418 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:25,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:25,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 12:53:25,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:25,471 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 12:53:25,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:25,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42896185] [2020-07-21 12:53:25,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:25,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:53:25,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522910911] [2020-07-21 12:53:25,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:53:25,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:25,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:53:25,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:53:25,476 INFO L87 Difference]: Start difference. First operand 134 states and 156 transitions. Second operand 3 states. [2020-07-21 12:53:25,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:25,531 INFO L93 Difference]: Finished difference Result 350 states and 419 transitions. [2020-07-21 12:53:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:53:25,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-21 12:53:25,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:25,539 INFO L225 Difference]: With dead ends: 350 [2020-07-21 12:53:25,539 INFO L226 Difference]: Without dead ends: 240 [2020-07-21 12:53:25,541 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 12:53:25,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-07-21 12:53:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 234. [2020-07-21 12:53:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-07-21 12:53:25,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 279 transitions. [2020-07-21 12:53:25,594 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 279 transitions. Word has length 52 [2020-07-21 12:53:25,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:25,599 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 279 transitions. [2020-07-21 12:53:25,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:53:25,600 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 279 transitions. [2020-07-21 12:53:25,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 12:53:25,605 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:25,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:53:25,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:25,823 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:25,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:25,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1060505325, now seen corresponding path program 1 times [2020-07-21 12:53:25,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:25,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654211958] [2020-07-21 12:53:25,825 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 12:53:26,220 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:26,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:26,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 12:53:26,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:26,290 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 12:53:26,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:26,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654211958] [2020-07-21 12:53:26,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:26,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:53:26,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865313020] [2020-07-21 12:53:26,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:53:26,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:26,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:53:26,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:53:26,293 INFO L87 Difference]: Start difference. First operand 234 states and 279 transitions. Second operand 6 states. [2020-07-21 12:53:26,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:26,661 INFO L93 Difference]: Finished difference Result 635 states and 795 transitions. [2020-07-21 12:53:26,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 12:53:26,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 12:53:26,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:26,667 INFO L225 Difference]: With dead ends: 635 [2020-07-21 12:53:26,668 INFO L226 Difference]: Without dead ends: 425 [2020-07-21 12:53:26,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:53:26,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-07-21 12:53:26,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2020-07-21 12:53:26,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-07-21 12:53:26,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 528 transitions. [2020-07-21 12:53:26,708 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 528 transitions. Word has length 57 [2020-07-21 12:53:26,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:26,709 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 528 transitions. [2020-07-21 12:53:26,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:53:26,709 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 528 transitions. [2020-07-21 12:53:26,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-21 12:53:26,712 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:26,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:53:26,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:26,927 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:26,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:26,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1254258393, now seen corresponding path program 1 times [2020-07-21 12:53:26,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:26,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398335799] [2020-07-21 12:53:26,929 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 12:53:27,269 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:27,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:27,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 12:53:27,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:27,288 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 12:53:27,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:27,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398335799] [2020-07-21 12:53:27,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:27,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:53:27,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492584968] [2020-07-21 12:53:27,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:53:27,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:27,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:53:27,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:53:27,291 INFO L87 Difference]: Start difference. First operand 425 states and 528 transitions. Second operand 3 states. [2020-07-21 12:53:27,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:27,364 INFO L93 Difference]: Finished difference Result 1025 states and 1327 transitions. [2020-07-21 12:53:27,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:53:27,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-07-21 12:53:27,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:27,371 INFO L225 Difference]: With dead ends: 1025 [2020-07-21 12:53:27,371 INFO L226 Difference]: Without dead ends: 624 [2020-07-21 12:53:27,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 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 12:53:27,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-07-21 12:53:27,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 611. [2020-07-21 12:53:27,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-07-21 12:53:27,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 759 transitions. [2020-07-21 12:53:27,438 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 759 transitions. Word has length 61 [2020-07-21 12:53:27,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:27,439 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 759 transitions. [2020-07-21 12:53:27,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:53:27,439 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 759 transitions. [2020-07-21 12:53:27,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-21 12:53:27,446 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:27,447 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-21 12:53:27,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:27,660 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:27,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:27,661 INFO L82 PathProgramCache]: Analyzing trace with hash 98669811, now seen corresponding path program 1 times [2020-07-21 12:53:27,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:27,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986786718] [2020-07-21 12:53:27,662 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 12:53:27,842 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 12:53:27,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:27,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 12:53:27,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-21 12:53:27,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:27,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986786718] [2020-07-21 12:53:27,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:27,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:53:27,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666567055] [2020-07-21 12:53:27,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:53:27,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:27,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:53:27,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:53:27,879 INFO L87 Difference]: Start difference. First operand 611 states and 759 transitions. Second operand 3 states. [2020-07-21 12:53:28,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:28,021 INFO L93 Difference]: Finished difference Result 1005 states and 1252 transitions. [2020-07-21 12:53:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:53:28,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2020-07-21 12:53:28,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:28,025 INFO L225 Difference]: With dead ends: 1005 [2020-07-21 12:53:28,026 INFO L226 Difference]: Without dead ends: 418 [2020-07-21 12:53:28,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 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 12:53:28,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-07-21 12:53:28,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 405. [2020-07-21 12:53:28,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-07-21 12:53:28,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 493 transitions. [2020-07-21 12:53:28,072 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 493 transitions. Word has length 128 [2020-07-21 12:53:28,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:28,074 INFO L479 AbstractCegarLoop]: Abstraction has 405 states and 493 transitions. [2020-07-21 12:53:28,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:53:28,075 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 493 transitions. [2020-07-21 12:53:28,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-21 12:53:28,084 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:28,085 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 12:53:28,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:28,299 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:28,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:28,300 INFO L82 PathProgramCache]: Analyzing trace with hash -920784732, now seen corresponding path program 1 times [2020-07-21 12:53:28,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:28,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117269121] [2020-07-21 12:53:28,301 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 12:53:28,594 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:28,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:28,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 29 conjunts are in the unsatisfiable core [2020-07-21 12:53:28,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:28,703 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 12:53:28,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:28,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117269121] [2020-07-21 12:53:28,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:28,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 12:53:28,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939132598] [2020-07-21 12:53:28,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 12:53:28,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:28,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 12:53:28,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:53:28,707 INFO L87 Difference]: Start difference. First operand 405 states and 493 transitions. Second operand 8 states. [2020-07-21 12:53:29,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:29,412 INFO L93 Difference]: Finished difference Result 1174 states and 1452 transitions. [2020-07-21 12:53:29,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 12:53:29,412 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-07-21 12:53:29,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:29,418 INFO L225 Difference]: With dead ends: 1174 [2020-07-21 12:53:29,418 INFO L226 Difference]: Without dead ends: 793 [2020-07-21 12:53:29,420 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 12:53:29,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2020-07-21 12:53:29,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 790. [2020-07-21 12:53:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 790 states. [2020-07-21 12:53:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 965 transitions. [2020-07-21 12:53:29,463 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 965 transitions. Word has length 143 [2020-07-21 12:53:29,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:29,463 INFO L479 AbstractCegarLoop]: Abstraction has 790 states and 965 transitions. [2020-07-21 12:53:29,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 12:53:29,464 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 965 transitions. [2020-07-21 12:53:29,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-21 12:53:29,467 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:29,467 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 12:53:29,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:29,682 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:29,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:29,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1255744520, now seen corresponding path program 1 times [2020-07-21 12:53:29,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:29,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813176519] [2020-07-21 12:53:29,683 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 12:53:29,953 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:29,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:29,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 12:53:29,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:30,038 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 12:53:30,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:30,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813176519] [2020-07-21 12:53:30,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:30,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 12:53:30,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623102327] [2020-07-21 12:53:30,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 12:53:30,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:30,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 12:53:30,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:53:30,041 INFO L87 Difference]: Start difference. First operand 790 states and 965 transitions. Second operand 8 states. [2020-07-21 12:53:30,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:30,507 INFO L93 Difference]: Finished difference Result 1525 states and 1880 transitions. [2020-07-21 12:53:30,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 12:53:30,507 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-07-21 12:53:30,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:30,513 INFO L225 Difference]: With dead ends: 1525 [2020-07-21 12:53:30,513 INFO L226 Difference]: Without dead ends: 759 [2020-07-21 12:53:30,516 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 12:53:30,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-07-21 12:53:30,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 756. [2020-07-21 12:53:30,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2020-07-21 12:53:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 904 transitions. [2020-07-21 12:53:30,554 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 904 transitions. Word has length 147 [2020-07-21 12:53:30,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:30,555 INFO L479 AbstractCegarLoop]: Abstraction has 756 states and 904 transitions. [2020-07-21 12:53:30,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 12:53:30,555 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 904 transitions. [2020-07-21 12:53:30,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-21 12:53:30,558 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:30,558 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 12:53:30,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:30,772 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:30,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:30,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1166802752, now seen corresponding path program 2 times [2020-07-21 12:53:30,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:30,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629391900] [2020-07-21 12:53:30,774 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 12:53:31,075 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:31,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:31,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:53:31,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:31,115 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 12:53:31,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:31,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629391900] [2020-07-21 12:53:31,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:31,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:53:31,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307280298] [2020-07-21 12:53:31,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:53:31,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:31,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:53:31,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:53:31,118 INFO L87 Difference]: Start difference. First operand 756 states and 904 transitions. Second operand 6 states. [2020-07-21 12:53:31,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:31,175 INFO L93 Difference]: Finished difference Result 1516 states and 1879 transitions. [2020-07-21 12:53:31,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 12:53:31,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2020-07-21 12:53:31,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:31,181 INFO L225 Difference]: With dead ends: 1516 [2020-07-21 12:53:31,181 INFO L226 Difference]: Without dead ends: 784 [2020-07-21 12:53:31,184 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 12:53:31,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-07-21 12:53:31,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 776. [2020-07-21 12:53:31,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2020-07-21 12:53:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 926 transitions. [2020-07-21 12:53:31,222 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 926 transitions. Word has length 147 [2020-07-21 12:53:31,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:31,222 INFO L479 AbstractCegarLoop]: Abstraction has 776 states and 926 transitions. [2020-07-21 12:53:31,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:53:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 926 transitions. [2020-07-21 12:53:31,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-21 12:53:31,226 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:31,226 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 12:53:31,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:31,441 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:31,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:31,442 INFO L82 PathProgramCache]: Analyzing trace with hash 434268354, now seen corresponding path program 1 times [2020-07-21 12:53:31,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:31,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272710810] [2020-07-21 12:53:31,443 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 12:53:31,744 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:31,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:31,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:53:31,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:31,785 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 12:53:31,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:31,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272710810] [2020-07-21 12:53:31,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:31,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 12:53:31,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126630055] [2020-07-21 12:53:31,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 12:53:31,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:31,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 12:53:31,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:53:31,788 INFO L87 Difference]: Start difference. First operand 776 states and 926 transitions. Second operand 5 states. [2020-07-21 12:53:31,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:31,826 INFO L93 Difference]: Finished difference Result 1494 states and 1829 transitions. [2020-07-21 12:53:31,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 12:53:31,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-07-21 12:53:31,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:31,831 INFO L225 Difference]: With dead ends: 1494 [2020-07-21 12:53:31,831 INFO L226 Difference]: Without dead ends: 742 [2020-07-21 12:53:31,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 143 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 12:53:31,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-07-21 12:53:31,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 742. [2020-07-21 12:53:31,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2020-07-21 12:53:31,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 884 transitions. [2020-07-21 12:53:31,895 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 884 transitions. Word has length 147 [2020-07-21 12:53:31,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:31,896 INFO L479 AbstractCegarLoop]: Abstraction has 742 states and 884 transitions. [2020-07-21 12:53:31,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 12:53:31,896 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 884 transitions. [2020-07-21 12:53:31,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-21 12:53:31,899 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:31,899 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 12:53:32,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:32,114 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:32,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:32,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1928180803, now seen corresponding path program 1 times [2020-07-21 12:53:32,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:32,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269080884] [2020-07-21 12:53:32,116 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 12:53:32,301 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 12:53:32,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:32,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 12:53:32,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:32,362 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 12:53:32,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:32,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269080884] [2020-07-21 12:53:32,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:32,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:53:32,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948473573] [2020-07-21 12:53:32,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:53:32,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:32,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:53:32,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:53:32,364 INFO L87 Difference]: Start difference. First operand 742 states and 884 transitions. Second operand 6 states. [2020-07-21 12:53:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:33,438 INFO L93 Difference]: Finished difference Result 2136 states and 2678 transitions. [2020-07-21 12:53:33,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:53:33,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2020-07-21 12:53:33,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:33,449 INFO L225 Difference]: With dead ends: 2136 [2020-07-21 12:53:33,449 INFO L226 Difference]: Without dead ends: 1418 [2020-07-21 12:53:33,453 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 12:53:33,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2020-07-21 12:53:33,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1363. [2020-07-21 12:53:33,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-07-21 12:53:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1633 transitions. [2020-07-21 12:53:33,565 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1633 transitions. Word has length 147 [2020-07-21 12:53:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:33,566 INFO L479 AbstractCegarLoop]: Abstraction has 1363 states and 1633 transitions. [2020-07-21 12:53:33,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:53:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1633 transitions. [2020-07-21 12:53:33,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-07-21 12:53:33,570 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:33,570 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 12:53:33,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:33,784 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:33,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:33,785 INFO L82 PathProgramCache]: Analyzing trace with hash 628739049, now seen corresponding path program 1 times [2020-07-21 12:53:33,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:33,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120940289] [2020-07-21 12:53:33,785 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 12:53:34,085 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:34,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:34,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:53:34,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:34,195 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 12:53:34,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:53:34,568 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 12:53:34,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120940289] [2020-07-21 12:53:34,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:53:34,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-07-21 12:53:34,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115893379] [2020-07-21 12:53:34,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 12:53:34,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:34,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 12:53:34,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-21 12:53:34,570 INFO L87 Difference]: Start difference. First operand 1363 states and 1633 transitions. Second operand 12 states. [2020-07-21 12:53:36,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:36,179 INFO L93 Difference]: Finished difference Result 3719 states and 4816 transitions. [2020-07-21 12:53:36,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 12:53:36,179 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 151 [2020-07-21 12:53:36,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:36,196 INFO L225 Difference]: With dead ends: 3719 [2020-07-21 12:53:36,196 INFO L226 Difference]: Without dead ends: 2380 [2020-07-21 12:53:36,202 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 12:53:36,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2020-07-21 12:53:36,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1839. [2020-07-21 12:53:36,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1839 states. [2020-07-21 12:53:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2205 transitions. [2020-07-21 12:53:36,317 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2205 transitions. Word has length 151 [2020-07-21 12:53:36,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:36,318 INFO L479 AbstractCegarLoop]: Abstraction has 1839 states and 2205 transitions. [2020-07-21 12:53:36,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 12:53:36,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2205 transitions. [2020-07-21 12:53:36,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-07-21 12:53:36,324 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:36,324 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 12:53:36,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:36,539 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:36,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:36,539 INFO L82 PathProgramCache]: Analyzing trace with hash -936418590, now seen corresponding path program 1 times [2020-07-21 12:53:36,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:36,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327990886] [2020-07-21 12:53:36,540 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 12:53:36,855 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:36,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:36,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 12:53:36,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:36,959 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 12:53:36,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:36,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327990886] [2020-07-21 12:53:36,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:36,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 12:53:36,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020615773] [2020-07-21 12:53:36,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 12:53:36,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:36,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 12:53:36,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:53:36,962 INFO L87 Difference]: Start difference. First operand 1839 states and 2205 transitions. Second operand 8 states. [2020-07-21 12:53:37,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:37,363 INFO L93 Difference]: Finished difference Result 3246 states and 3946 transitions. [2020-07-21 12:53:37,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 12:53:37,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 203 [2020-07-21 12:53:37,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:37,373 INFO L225 Difference]: With dead ends: 3246 [2020-07-21 12:53:37,374 INFO L226 Difference]: Without dead ends: 1715 [2020-07-21 12:53:37,379 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 12:53:37,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2020-07-21 12:53:37,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1712. [2020-07-21 12:53:37,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1712 states. [2020-07-21 12:53:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2049 transitions. [2020-07-21 12:53:37,458 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2049 transitions. Word has length 203 [2020-07-21 12:53:37,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:37,459 INFO L479 AbstractCegarLoop]: Abstraction has 1712 states and 2049 transitions. [2020-07-21 12:53:37,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 12:53:37,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2049 transitions. [2020-07-21 12:53:37,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-07-21 12:53:37,464 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:37,465 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 12:53:37,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:37,680 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:37,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:37,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1251841122, now seen corresponding path program 2 times [2020-07-21 12:53:37,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:37,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937393151] [2020-07-21 12:53:37,682 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 12:53:38,076 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:38,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:53:38,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:53:38,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:53:38,196 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 12:53:38,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:53:38,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937393151] [2020-07-21 12:53:38,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:53:38,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:53:38,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490100827] [2020-07-21 12:53:38,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:53:38,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:53:38,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:53:38,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:53:38,199 INFO L87 Difference]: Start difference. First operand 1712 states and 2049 transitions. Second operand 6 states. [2020-07-21 12:53:38,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:53:38,441 INFO L93 Difference]: Finished difference Result 1733 states and 2072 transitions. [2020-07-21 12:53:38,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:53:38,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-07-21 12:53:38,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:53:38,451 INFO L225 Difference]: With dead ends: 1733 [2020-07-21 12:53:38,451 INFO L226 Difference]: Without dead ends: 1730 [2020-07-21 12:53:38,453 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 12:53:38,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2020-07-21 12:53:38,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1712. [2020-07-21 12:53:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1712 states. [2020-07-21 12:53:38,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2042 transitions. [2020-07-21 12:53:38,531 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2042 transitions. Word has length 203 [2020-07-21 12:53:38,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:53:38,532 INFO L479 AbstractCegarLoop]: Abstraction has 1712 states and 2042 transitions. [2020-07-21 12:53:38,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:53:38,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2042 transitions. [2020-07-21 12:53:38,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-07-21 12:53:38,537 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:53:38,538 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 12:53:38,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:38,752 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:53:38,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:53:38,752 INFO L82 PathProgramCache]: Analyzing trace with hash 402231489, now seen corresponding path program 1 times [2020-07-21 12:53:38,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:53:38,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265870493] [2020-07-21 12:53:38,753 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:39,101 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:53:39,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 12:53:39,101 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:53:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 12:53:39,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:53:39,531 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 12:53:39,531 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 12:53:39,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:53:40,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:53:40 BoogieIcfgContainer [2020-07-21 12:53:40,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 12:53:40,017 INFO L168 Benchmark]: Toolchain (without parser) took 20800.74 ms. Allocated memory was 140.0 MB in the beginning and 451.9 MB in the end (delta: 312.0 MB). Free memory was 103.3 MB in the beginning and 102.8 MB in the end (delta: 593.4 kB). Peak memory consumption was 312.5 MB. Max. memory is 7.1 GB. [2020-07-21 12:53:40,023 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 12:53:40,028 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.87 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 102.9 MB in the beginning and 173.4 MB in the end (delta: -70.5 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2020-07-21 12:53:40,029 INFO L168 Benchmark]: Boogie Preprocessor took 109.98 ms. Allocated memory is still 205.0 MB. Free memory was 173.4 MB in the beginning and 169.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-21 12:53:40,030 INFO L168 Benchmark]: RCFGBuilder took 3465.32 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 169.3 MB in the beginning and 194.1 MB in the end (delta: -24.7 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-07-21 12:53:40,030 INFO L168 Benchmark]: TraceAbstraction took 16482.50 ms. Allocated memory was 235.9 MB in the beginning and 451.9 MB in the end (delta: 216.0 MB). Free memory was 192.7 MB in the beginning and 102.8 MB in the end (delta: 89.9 MB). Peak memory consumption was 305.9 MB. Max. memory is 7.1 GB. [2020-07-21 12:53:40,035 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 736.87 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 102.9 MB in the beginning and 173.4 MB in the end (delta: -70.5 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.98 ms. Allocated memory is still 205.0 MB. Free memory was 173.4 MB in the beginning and 169.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3465.32 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 169.3 MB in the beginning and 194.1 MB in the end (delta: -24.7 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16482.50 ms. Allocated memory was 235.9 MB in the beginning and 451.9 MB in the end (delta: 216.0 MB). Free memory was 192.7 MB in the beginning and 102.8 MB in the end (delta: 89.9 MB). Peak memory consumption was 305.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L556] int pumpRunning = 0; [L557] int systemActive = 1; [L774] int waterLevel = 1; [L775] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=74, \old(head)=35, \old(head)=38, \old(methaneLevelCritical)=71, \old(pumpRunning)=46, \old(systemActive)=37, \old(waterLevel)=39, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L525] int retValue_acc ; [L526] 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] [L530] 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] [L531] 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] [L532] 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] [L963] int retValue_acc ; [L966] retValue_acc = 1 [L967] 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] [L532] 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] [L532] tmp = valid_product() [L534] 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] [L536] 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] [L537] 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] [L516] 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] [L869] int splverifierCounter ; [L870] int tmp ; [L871] int tmp___0 ; [L872] int tmp___1 ; [L873] int tmp___2 ; [L876] 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] [L878] 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] [L880] 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] [L886] tmp = __VERIFIER_nondet_int() [L888] 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] [L890] 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] [L792] COND TRUE waterLevel < 2 [L793] 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] [L890] 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] [L896] tmp___0 = __VERIFIER_nondet_int() [L898] 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] [L906] tmp___2 = __VERIFIER_nondet_int() [L908] COND FALSE !(\read(tmp___2)) [L914] tmp___1 = __VERIFIER_nondet_int() [L916] COND FALSE !(\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=0, tmp___2=0, waterLevel=2] [L925] 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] [L563] 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] [L570] 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] [L572] 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] [L618] 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] [L621] 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] [L636] 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] [L592] 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] [L595] 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] [L597] 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] [L732] int retValue_acc ; [L733] int tmp ; [L734] 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] [L738] 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] [L854] 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] [L857] COND FALSE !(waterLevel < 2) [L861] retValue_acc = 0 [L862] 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] [L738] 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] [L738] tmp = isHighWaterSensorDry() [L740] COND FALSE !(\read(tmp)) [L743] 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] [L745] retValue_acc = tmp___0 [L746] 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] [L597] 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] [L597] tmp = isHighWaterLevel() [L599] 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] [L601] 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] [L651] 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] [L655] 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] [L676] 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] [L680] 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] [L813] int retValue_acc ; [L816] retValue_acc = methaneLevelCritical [L817] 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] [L680] 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] [L680] retValue_acc = isMethaneLevelCritical() [L682] 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] [L655] 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] [L655] tmp = isMethaneAlarm() [L657] 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] [L661] 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] [L646] 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] [L661] 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] [L601] 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] [L636] 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] [L572] 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] [L578] 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] [L44] int tmp ; [L45] 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] [L49] 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] [L845] int retValue_acc ; [L848] retValue_acc = waterLevel [L849] 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] [L49] 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] [L49] tmp = getWaterLevel() [L51] 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] [L578] 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] [L925] 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=0, tmp___2=0, waterLevel=2] [L878] 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=0, tmp___2=0, waterLevel=2] [L880] 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=0, tmp___2=0, waterLevel=2] [L886] tmp = __VERIFIER_nondet_int() [L888] 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=0, tmp___2=0, waterLevel=2] [L896] tmp___0 = __VERIFIER_nondet_int() [L898] 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=0, tmp___2=0, waterLevel=2] [L906] tmp___2 = __VERIFIER_nondet_int() [L908] COND FALSE !(\read(tmp___2)) [L914] tmp___1 = __VERIFIER_nondet_int() [L916] COND FALSE !(\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=0, tmp___2=0, waterLevel=2] [L925] 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] [L563] 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] [L565] 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] [L780] COND TRUE waterLevel > 0 [L781] 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] [L565] 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] [L570] 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] [L572] 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] [L618] 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] [L621] 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] [L623] 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] [L676] 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] [L680] 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] [L813] int retValue_acc ; [L816] retValue_acc = methaneLevelCritical [L817] 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] [L680] 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] [L680] retValue_acc = isMethaneLevelCritical() [L682] 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] [L623] 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] [L623] tmp = isMethaneAlarm() [L625] 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] [L631] 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] [L592] 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] [L595] 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] [L610] 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] [L631] 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] [L572] 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] [L578] 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] [L44] int tmp ; [L45] 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] [L49] 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] [L845] int retValue_acc ; [L848] retValue_acc = waterLevel [L849] 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] [L49] 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] [L49] tmp = getWaterLevel() [L51] 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] [L578] 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] [L925] 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=0, tmp___2=0, waterLevel=1] [L878] 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=0, tmp___2=0, waterLevel=1] [L880] 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=0, tmp___2=0, waterLevel=1] [L886] tmp = __VERIFIER_nondet_int() [L888] 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=0, tmp___2=0, waterLevel=1] [L896] tmp___0 = __VERIFIER_nondet_int() [L898] 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=0, tmp___2=0, waterLevel=1] [L906] tmp___2 = __VERIFIER_nondet_int() [L908] COND FALSE !(\read(tmp___2)) [L914] tmp___1 = __VERIFIER_nondet_int() [L916] COND FALSE !(\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=0, tmp___2=0, waterLevel=1] [L925] 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] [L563] 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] [L565] 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] [L780] COND TRUE waterLevel > 0 [L781] 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] [L565] 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] [L570] 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] [L572] 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] [L618] 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] [L621] 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] [L623] 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] [L676] 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] [L680] 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] [L813] int retValue_acc ; [L816] retValue_acc = methaneLevelCritical [L817] 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] [L680] 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] [L680] retValue_acc = isMethaneLevelCritical() [L682] 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] [L623] 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] [L623] tmp = isMethaneAlarm() [L625] 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] [L631] 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] [L592] 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] [L595] 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] [L610] 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] [L631] 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] [L572] 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] [L578] 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] [L44] int tmp ; [L45] 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] [L49] 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] [L845] int retValue_acc ; [L848] retValue_acc = waterLevel [L849] 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] [L49] 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] [L49] tmp = getWaterLevel() [L51] 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] [L53] 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] [L687] int retValue_acc ; [L690] retValue_acc = pumpRunning [L691] 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] [L53] 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] [L53] tmp___0 = isPumpRunning() [L55] 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] [L57] 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] [L439] __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 41 procedures, 242 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.1s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2661 SDtfs, 1434 SDslu, 5270 SDs, 0 SdLazy, 2544 SolverSat, 503 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1840 GetRequests, 1764 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1839occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 663 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1882 NumberOfCodeBlocks, 1745 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1815 ConstructedInterpolants, 0 QuantifiedInterpolants, 424205 SizeOfPredicates, 44 NumberOfNonLiveVariables, 11293 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 458/479 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...