/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_VARIABLES --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_spec2_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:40:35,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:40:35,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:40:35,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:40:35,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:40:35,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:40:35,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:40:35,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:40:35,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:40:35,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:40:35,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:40:35,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:40:35,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:40:35,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:40:35,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:40:35,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:40:35,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:40:35,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:40:35,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:40:35,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:40:35,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:40:35,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:40:35,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:40:35,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:40:35,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 15:40:35,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 15:40:35,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 15:40:35,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 15:40:35,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 15:40:35,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 15:40:35,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 15:40:35,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 15:40:35,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 15:40:35,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 15:40:35,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 15:40:35,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 15:40:35,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 15:40:35,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 15:40:35,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:40:35,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:40:35,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:40:35,868 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 15:40:35,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:40:35,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:40:35,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:40:35,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:40:35,909 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:40:35,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:40:35,909 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:40:35,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:40:35,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:40:35,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:40:35,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:40:35,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:40:35,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:40:35,911 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:40:35,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:40:35,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:40:35,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:40:35,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:40:35,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:40:35,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:40:35,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:40:35,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:40:35,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:40:35,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:40:35,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:40:35,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:40:35,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:35,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:40:35,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:40:35,917 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_VARIABLES 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 15:40:36,206 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:40:36,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:40:36,232 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:40:36,234 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:40:36,234 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:40:36,236 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product44.cil.c [2020-07-21 15:40:36,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44d66e10a/e6add3eebfb0422c8ec851c85e24bbfe/FLAG15e422974 [2020-07-21 15:40:36,853 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:40:36,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product44.cil.c [2020-07-21 15:40:36,867 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44d66e10a/e6add3eebfb0422c8ec851c85e24bbfe/FLAG15e422974 [2020-07-21 15:40:37,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44d66e10a/e6add3eebfb0422c8ec851c85e24bbfe [2020-07-21 15:40:37,154 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:40:37,157 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:40:37,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:40:37,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:40:37,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:40:37,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7210537a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37, skipping insertion in model container [2020-07-21 15:40:37,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:40:37,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:40:37,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:40:37,631 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:40:37,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:40:37,779 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:40:37,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37 WrapperNode [2020-07-21 15:40:37,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:40:37,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:40:37,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:40:37,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:40:37,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:40:37,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:40:37,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:40:37,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:40:37,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (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 15:40:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:40:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:40:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 15:40:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 15:40:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 15:40:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 15:40:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 15:40:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 15:40:37,975 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-07-21 15:40:37,975 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 15:40:37,976 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 15:40:37,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 15:40:37,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 15:40:37,976 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 15:40:37,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 15:40:37,978 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-21 15:40:37,978 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-21 15:40:37,978 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 15:40:37,978 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 15:40:37,978 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 15:40:37,979 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 15:40:37,979 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 15:40:37,979 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 15:40:37,979 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 15:40:37,979 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 15:40:37,980 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:40:37,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-07-21 15:40:37,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-07-21 15:40:37,981 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 15:40:37,981 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 15:40:37,981 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 15:40:37,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 15:40:37,981 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 15:40:37,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 15:40:37,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 15:40:37,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 15:40:37,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 15:40:37,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 15:40:37,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 15:40:37,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 15:40:37,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 15:40:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:40:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 15:40:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 15:40:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 15:40:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 15:40:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 15:40:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-21 15:40:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-21 15:40:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 15:40:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 15:40:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 15:40:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 15:40:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 15:40:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 15:40:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 15:40:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 15:40:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 15:40:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 15:40:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 15:40:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-07-21 15:40:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 15:40:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 15:40:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 15:40:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-07-21 15:40:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 15:40:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 15:40:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 15:40:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 15:40:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 15:40:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 15:40:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 15:40:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 15:40:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-07-21 15:40:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 15:40:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:40:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 15:40:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 15:40:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 15:40:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 15:40:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 15:40:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 15:40:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 15:40:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 15:40:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 15:40:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 15:40:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 15:40:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 15:40:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 15:40:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 15:40:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 15:40:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 15:40:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 15:40:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:40:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 15:40:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:40:39,081 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:40:39,082 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 15:40:39,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:40:39 BoogieIcfgContainer [2020-07-21 15:40:39,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:40:39,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:40:39,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:40:39,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:40:39,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:40:37" (1/3) ... [2020-07-21 15:40:39,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739420ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:40:39, skipping insertion in model container [2020-07-21 15:40:39,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (2/3) ... [2020-07-21 15:40:39,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739420ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:40:39, skipping insertion in model container [2020-07-21 15:40:39,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:40:39" (3/3) ... [2020-07-21 15:40:39,095 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product44.cil.c [2020-07-21 15:40:39,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:40:39,114 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:40:39,127 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:40:39,151 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:40:39,151 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:40:39,151 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:40:39,151 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:40:39,152 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:40:39,152 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:40:39,152 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:40:39,152 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:40:39,176 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-07-21 15:40:39,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-21 15:40:39,185 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:39,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:39,187 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:39,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:39,192 INFO L82 PathProgramCache]: Analyzing trace with hash 925001116, now seen corresponding path program 1 times [2020-07-21 15:40:39,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:39,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432247835] [2020-07-21 15:40:39,200 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 15:40:39,577 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:39,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:39,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 15:40:39,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:39,632 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 15:40:39,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:39,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432247835] [2020-07-21 15:40:39,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:39,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 15:40:39,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802475118] [2020-07-21 15:40:39,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 15:40:39,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:39,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 15:40:39,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:40:39,665 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 2 states. [2020-07-21 15:40:39,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:39,714 INFO L93 Difference]: Finished difference Result 266 states and 327 transitions. [2020-07-21 15:40:39,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 15:40:39,715 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2020-07-21 15:40:39,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:39,732 INFO L225 Difference]: With dead ends: 266 [2020-07-21 15:40:39,733 INFO L226 Difference]: Without dead ends: 135 [2020-07-21 15:40:39,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 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 15:40:39,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-07-21 15:40:39,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-07-21 15:40:39,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-07-21 15:40:39,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 157 transitions. [2020-07-21 15:40:39,807 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 157 transitions. Word has length 51 [2020-07-21 15:40:39,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:39,808 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 157 transitions. [2020-07-21 15:40:39,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 15:40:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 157 transitions. [2020-07-21 15:40:39,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 15:40:39,812 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:39,812 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 15:40:40,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:40,026 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:40,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:40,027 INFO L82 PathProgramCache]: Analyzing trace with hash -214077655, now seen corresponding path program 1 times [2020-07-21 15:40:40,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:40,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208415188] [2020-07-21 15:40:40,028 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 15:40:40,376 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:40,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:40,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 15:40:40,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:40,431 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 15:40:40,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:40,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208415188] [2020-07-21 15:40:40,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:40,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:40:40,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404221825] [2020-07-21 15:40:40,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:40:40,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:40,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:40:40,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:40:40,438 INFO L87 Difference]: Start difference. First operand 135 states and 157 transitions. Second operand 3 states. [2020-07-21 15:40:40,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:40,477 INFO L93 Difference]: Finished difference Result 202 states and 235 transitions. [2020-07-21 15:40:40,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:40:40,479 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-21 15:40:40,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:40,487 INFO L225 Difference]: With dead ends: 202 [2020-07-21 15:40:40,488 INFO L226 Difference]: Without dead ends: 126 [2020-07-21 15:40:40,491 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 15:40:40,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-07-21 15:40:40,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-07-21 15:40:40,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-21 15:40:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 145 transitions. [2020-07-21 15:40:40,520 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 145 transitions. Word has length 52 [2020-07-21 15:40:40,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:40,521 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 145 transitions. [2020-07-21 15:40:40,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:40:40,521 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 145 transitions. [2020-07-21 15:40:40,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 15:40:40,525 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:40,526 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 15:40:40,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:40,727 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:40,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:40,728 INFO L82 PathProgramCache]: Analyzing trace with hash 784654360, now seen corresponding path program 1 times [2020-07-21 15:40:40,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:40,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532393187] [2020-07-21 15:40:40,729 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 15:40:41,032 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:41,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:41,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 15:40:41,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:41,072 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 15:40:41,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:41,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532393187] [2020-07-21 15:40:41,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:41,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:40:41,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603282752] [2020-07-21 15:40:41,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:40:41,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:41,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:40:41,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:40:41,075 INFO L87 Difference]: Start difference. First operand 126 states and 145 transitions. Second operand 3 states. [2020-07-21 15:40:41,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:41,103 INFO L93 Difference]: Finished difference Result 318 states and 378 transitions. [2020-07-21 15:40:41,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:40:41,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-07-21 15:40:41,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:41,106 INFO L225 Difference]: With dead ends: 318 [2020-07-21 15:40:41,107 INFO L226 Difference]: Without dead ends: 220 [2020-07-21 15:40:41,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 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 15:40:41,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-07-21 15:40:41,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 208. [2020-07-21 15:40:41,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-07-21 15:40:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 245 transitions. [2020-07-21 15:40:41,149 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 245 transitions. Word has length 57 [2020-07-21 15:40:41,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:41,151 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 245 transitions. [2020-07-21 15:40:41,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:40:41,151 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 245 transitions. [2020-07-21 15:40:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-21 15:40:41,159 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:41,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:41,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:41,360 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:41,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:41,362 INFO L82 PathProgramCache]: Analyzing trace with hash 402514829, now seen corresponding path program 1 times [2020-07-21 15:40:41,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:41,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172921779] [2020-07-21 15:40:41,363 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 15:40:41,685 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:41,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:41,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:40:41,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:41,744 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 15:40:41,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:41,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172921779] [2020-07-21 15:40:41,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:41,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:40:41,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985291189] [2020-07-21 15:40:41,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:40:41,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:41,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:40:41,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:40:41,748 INFO L87 Difference]: Start difference. First operand 208 states and 245 transitions. Second operand 6 states. [2020-07-21 15:40:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:42,001 INFO L93 Difference]: Finished difference Result 496 states and 608 transitions. [2020-07-21 15:40:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:40:42,001 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-07-21 15:40:42,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:42,006 INFO L225 Difference]: With dead ends: 496 [2020-07-21 15:40:42,006 INFO L226 Difference]: Without dead ends: 316 [2020-07-21 15:40:42,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 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 15:40:42,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-07-21 15:40:42,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 308. [2020-07-21 15:40:42,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-07-21 15:40:42,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 367 transitions. [2020-07-21 15:40:42,046 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 367 transitions. Word has length 62 [2020-07-21 15:40:42,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:42,047 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 367 transitions. [2020-07-21 15:40:42,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:40:42,047 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 367 transitions. [2020-07-21 15:40:42,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-07-21 15:40:42,049 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:42,051 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:42,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:42,267 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:42,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:42,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1927913333, now seen corresponding path program 1 times [2020-07-21 15:40:42,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:42,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055379454] [2020-07-21 15:40:42,269 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 15:40:42,580 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:42,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:42,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 15:40:42,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 15:40:42,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:42,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055379454] [2020-07-21 15:40:42,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:42,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:40:42,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384620995] [2020-07-21 15:40:42,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:40:42,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:42,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:40:42,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:40:42,627 INFO L87 Difference]: Start difference. First operand 308 states and 367 transitions. Second operand 3 states. [2020-07-21 15:40:42,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:42,678 INFO L93 Difference]: Finished difference Result 860 states and 1091 transitions. [2020-07-21 15:40:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:40:42,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-07-21 15:40:42,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:42,684 INFO L225 Difference]: With dead ends: 860 [2020-07-21 15:40:42,684 INFO L226 Difference]: Without dead ends: 580 [2020-07-21 15:40:42,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:40:42,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-07-21 15:40:42,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 577. [2020-07-21 15:40:42,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-07-21 15:40:42,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 716 transitions. [2020-07-21 15:40:42,725 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 716 transitions. Word has length 95 [2020-07-21 15:40:42,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:42,726 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 716 transitions. [2020-07-21 15:40:42,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:40:42,726 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 716 transitions. [2020-07-21 15:40:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-07-21 15:40:42,729 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:42,729 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:42,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:42,943 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:42,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:42,944 INFO L82 PathProgramCache]: Analyzing trace with hash 729918396, now seen corresponding path program 1 times [2020-07-21 15:40:42,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:42,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059080389] [2020-07-21 15:40:42,945 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 15:40:43,130 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:40:43,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:43,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 15:40:43,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:43,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 15:40:43,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:43,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059080389] [2020-07-21 15:40:43,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:43,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:40:43,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970485534] [2020-07-21 15:40:43,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:40:43,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:43,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:40:43,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:40:43,179 INFO L87 Difference]: Start difference. First operand 577 states and 716 transitions. Second operand 5 states. [2020-07-21 15:40:43,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:43,216 INFO L93 Difference]: Finished difference Result 1126 states and 1440 transitions. [2020-07-21 15:40:43,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:40:43,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-07-21 15:40:43,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:43,220 INFO L225 Difference]: With dead ends: 1126 [2020-07-21 15:40:43,221 INFO L226 Difference]: Without dead ends: 577 [2020-07-21 15:40:43,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 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 15:40:43,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-07-21 15:40:43,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2020-07-21 15:40:43,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-07-21 15:40:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 714 transitions. [2020-07-21 15:40:43,253 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 714 transitions. Word has length 99 [2020-07-21 15:40:43,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:43,254 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 714 transitions. [2020-07-21 15:40:43,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:40:43,254 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 714 transitions. [2020-07-21 15:40:43,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-07-21 15:40:43,257 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:43,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:43,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:43,471 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:43,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:43,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1515661058, now seen corresponding path program 1 times [2020-07-21 15:40:43,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:43,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819034284] [2020-07-21 15:40:43,474 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 15:40:43,780 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:43,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:43,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 15:40:43,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:43,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 15:40:43,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:43,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819034284] [2020-07-21 15:40:43,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:43,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:40:43,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581175833] [2020-07-21 15:40:43,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:40:43,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:43,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:40:43,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:40:43,838 INFO L87 Difference]: Start difference. First operand 577 states and 714 transitions. Second operand 6 states. [2020-07-21 15:40:44,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:44,925 INFO L93 Difference]: Finished difference Result 1882 states and 2519 transitions. [2020-07-21 15:40:44,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 15:40:44,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-07-21 15:40:44,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:44,934 INFO L225 Difference]: With dead ends: 1882 [2020-07-21 15:40:44,934 INFO L226 Difference]: Without dead ends: 1333 [2020-07-21 15:40:44,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 15:40:44,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2020-07-21 15:40:45,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1223. [2020-07-21 15:40:45,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1223 states. [2020-07-21 15:40:45,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1577 transitions. [2020-07-21 15:40:45,010 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1577 transitions. Word has length 99 [2020-07-21 15:40:45,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:45,010 INFO L479 AbstractCegarLoop]: Abstraction has 1223 states and 1577 transitions. [2020-07-21 15:40:45,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:40:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1577 transitions. [2020-07-21 15:40:45,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-07-21 15:40:45,013 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:45,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:45,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:45,229 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:45,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:45,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1287247144, now seen corresponding path program 1 times [2020-07-21 15:40:45,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:45,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337143414] [2020-07-21 15:40:45,232 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 15:40:45,466 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:45,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:45,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 15:40:45,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 15:40:45,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:45,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337143414] [2020-07-21 15:40:45,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:45,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:40:45,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575146986] [2020-07-21 15:40:45,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:40:45,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:45,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:40:45,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:40:45,500 INFO L87 Difference]: Start difference. First operand 1223 states and 1577 transitions. Second operand 3 states. [2020-07-21 15:40:45,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:45,590 INFO L93 Difference]: Finished difference Result 2193 states and 2979 transitions. [2020-07-21 15:40:45,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:40:45,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-07-21 15:40:45,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:45,606 INFO L225 Difference]: With dead ends: 2193 [2020-07-21 15:40:45,606 INFO L226 Difference]: Without dead ends: 2190 [2020-07-21 15:40:45,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 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 15:40:45,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2020-07-21 15:40:45,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 2114. [2020-07-21 15:40:45,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2020-07-21 15:40:45,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 2881 transitions. [2020-07-21 15:40:45,789 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 2881 transitions. Word has length 95 [2020-07-21 15:40:45,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:45,790 INFO L479 AbstractCegarLoop]: Abstraction has 2114 states and 2881 transitions. [2020-07-21 15:40:45,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:40:45,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 2881 transitions. [2020-07-21 15:40:45,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-07-21 15:40:45,803 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:45,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 15:40:46,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:46,019 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:46,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:46,020 INFO L82 PathProgramCache]: Analyzing trace with hash -694145888, now seen corresponding path program 1 times [2020-07-21 15:40:46,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:46,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596999601] [2020-07-21 15:40:46,020 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 15:40:46,383 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:46,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:46,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 15:40:46,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-21 15:40:46,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:46,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596999601] [2020-07-21 15:40:46,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:46,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:40:46,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587323742] [2020-07-21 15:40:46,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:40:46,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:46,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:40:46,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:40:46,416 INFO L87 Difference]: Start difference. First operand 2114 states and 2881 transitions. Second operand 3 states. [2020-07-21 15:40:46,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:46,553 INFO L93 Difference]: Finished difference Result 3445 states and 4677 transitions. [2020-07-21 15:40:46,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:40:46,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2020-07-21 15:40:46,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:46,564 INFO L225 Difference]: With dead ends: 3445 [2020-07-21 15:40:46,564 INFO L226 Difference]: Without dead ends: 1359 [2020-07-21 15:40:46,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 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 15:40:46,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2020-07-21 15:40:46,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1305. [2020-07-21 15:40:46,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-07-21 15:40:46,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1702 transitions. [2020-07-21 15:40:46,670 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1702 transitions. Word has length 135 [2020-07-21 15:40:46,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:46,671 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1702 transitions. [2020-07-21 15:40:46,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:40:46,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1702 transitions. [2020-07-21 15:40:46,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-07-21 15:40:46,676 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:46,677 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 15:40:46,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:46,890 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:46,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:46,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1691508648, now seen corresponding path program 1 times [2020-07-21 15:40:46,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:46,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677455635] [2020-07-21 15:40:46,891 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 15:40:47,177 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:47,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:47,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-21 15:40:47,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 15:40:47,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:40:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 15:40:47,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677455635] [2020-07-21 15:40:47,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:40:47,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2020-07-21 15:40:47,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337419701] [2020-07-21 15:40:47,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-21 15:40:47,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:47,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-21 15:40:47,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-07-21 15:40:47,813 INFO L87 Difference]: Start difference. First operand 1305 states and 1702 transitions. Second operand 17 states. [2020-07-21 15:40:48,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:48,807 INFO L93 Difference]: Finished difference Result 3438 states and 4800 transitions. [2020-07-21 15:40:48,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-21 15:40:48,807 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 138 [2020-07-21 15:40:48,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:48,826 INFO L225 Difference]: With dead ends: 3438 [2020-07-21 15:40:48,827 INFO L226 Difference]: Without dead ends: 2161 [2020-07-21 15:40:48,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2020-07-21 15:40:48,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2020-07-21 15:40:48,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2096. [2020-07-21 15:40:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-07-21 15:40:48,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 2715 transitions. [2020-07-21 15:40:48,976 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 2715 transitions. Word has length 138 [2020-07-21 15:40:48,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:48,977 INFO L479 AbstractCegarLoop]: Abstraction has 2096 states and 2715 transitions. [2020-07-21 15:40:48,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-21 15:40:48,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 2715 transitions. [2020-07-21 15:40:48,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-07-21 15:40:48,987 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:48,987 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:40:49,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:49,201 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:49,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:49,201 INFO L82 PathProgramCache]: Analyzing trace with hash 359416899, now seen corresponding path program 1 times [2020-07-21 15:40:49,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:49,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447497095] [2020-07-21 15:40:49,202 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 15:40:49,561 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:49,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:49,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 15:40:49,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 66 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-07-21 15:40:49,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:40:49,844 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:40:49,859 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:40:49,906 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:40:49,907 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:40:49,977 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:40:50,010 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:40:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-07-21 15:40:50,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447497095] [2020-07-21 15:40:50,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:40:50,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2020-07-21 15:40:50,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697871758] [2020-07-21 15:40:50,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 15:40:50,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:50,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 15:40:50,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-07-21 15:40:50,130 INFO L87 Difference]: Start difference. First operand 2096 states and 2715 transitions. Second operand 10 states. [2020-07-21 15:40:51,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:51,612 INFO L93 Difference]: Finished difference Result 5840 states and 8266 transitions. [2020-07-21 15:40:51,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 15:40:51,613 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 178 [2020-07-21 15:40:51,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:51,639 INFO L225 Difference]: With dead ends: 5840 [2020-07-21 15:40:51,639 INFO L226 Difference]: Without dead ends: 3772 [2020-07-21 15:40:51,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 341 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2020-07-21 15:40:51,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3772 states. [2020-07-21 15:40:51,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3772 to 2656. [2020-07-21 15:40:51,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2656 states. [2020-07-21 15:40:51,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 3401 transitions. [2020-07-21 15:40:51,833 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 3401 transitions. Word has length 178 [2020-07-21 15:40:51,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:51,834 INFO L479 AbstractCegarLoop]: Abstraction has 2656 states and 3401 transitions. [2020-07-21 15:40:51,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 15:40:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 3401 transitions. [2020-07-21 15:40:51,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-07-21 15:40:51,844 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:51,844 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 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 15:40:52,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:52,058 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:52,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:52,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1055052641, now seen corresponding path program 1 times [2020-07-21 15:40:52,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:52,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441595392] [2020-07-21 15:40:52,060 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 15:40:52,247 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:40:52,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:52,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 15:40:52,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 15:40:52,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:52,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441595392] [2020-07-21 15:40:52,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:52,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:40:52,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493348438] [2020-07-21 15:40:52,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:40:52,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:52,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:40:52,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:40:52,323 INFO L87 Difference]: Start difference. First operand 2656 states and 3401 transitions. Second operand 6 states. [2020-07-21 15:40:52,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:52,789 INFO L93 Difference]: Finished difference Result 5374 states and 6958 transitions. [2020-07-21 15:40:52,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:40:52,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2020-07-21 15:40:52,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:52,810 INFO L225 Difference]: With dead ends: 5374 [2020-07-21 15:40:52,810 INFO L226 Difference]: Without dead ends: 2646 [2020-07-21 15:40:52,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:40:52,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2020-07-21 15:40:52,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2646. [2020-07-21 15:40:52,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2646 states. [2020-07-21 15:40:52,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 3247 transitions. [2020-07-21 15:40:52,981 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 3247 transitions. Word has length 182 [2020-07-21 15:40:52,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:52,981 INFO L479 AbstractCegarLoop]: Abstraction has 2646 states and 3247 transitions. [2020-07-21 15:40:52,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:40:52,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 3247 transitions. [2020-07-21 15:40:52,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-07-21 15:40:52,990 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:52,990 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:40:53,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:53,205 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:53,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:53,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1745620293, now seen corresponding path program 2 times [2020-07-21 15:40:53,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:53,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558534674] [2020-07-21 15:40:53,207 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 15:40:53,441 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:40:53,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:53,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:40:53,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-07-21 15:40:53,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:53,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558534674] [2020-07-21 15:40:53,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:53,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:40:53,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973856847] [2020-07-21 15:40:53,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:40:53,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:53,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:40:53,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:40:53,491 INFO L87 Difference]: Start difference. First operand 2646 states and 3247 transitions. Second operand 6 states. [2020-07-21 15:40:53,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:53,590 INFO L93 Difference]: Finished difference Result 4986 states and 6249 transitions. [2020-07-21 15:40:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:40:53,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2020-07-21 15:40:53,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:53,606 INFO L225 Difference]: With dead ends: 4986 [2020-07-21 15:40:53,606 INFO L226 Difference]: Without dead ends: 2368 [2020-07-21 15:40:53,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 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 15:40:53,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2020-07-21 15:40:53,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2281. [2020-07-21 15:40:53,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-07-21 15:40:53,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 2769 transitions. [2020-07-21 15:40:53,737 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 2769 transitions. Word has length 178 [2020-07-21 15:40:53,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:53,738 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 2769 transitions. [2020-07-21 15:40:53,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:40:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 2769 transitions. [2020-07-21 15:40:53,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-07-21 15:40:53,745 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:53,745 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:53,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:53,959 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:53,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:53,959 INFO L82 PathProgramCache]: Analyzing trace with hash 464766112, now seen corresponding path program 1 times [2020-07-21 15:40:53,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:53,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673390990] [2020-07-21 15:40:53,959 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 15:40:54,347 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:54,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 15:40:54,347 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:40:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 15:40:54,459 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:40:54,816 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 15:40:54,817 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 15:40:55,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:55,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:40:55 BoogieIcfgContainer [2020-07-21 15:40:55,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:40:55,276 INFO L168 Benchmark]: Toolchain (without parser) took 18118.98 ms. Allocated memory was 145.8 MB in the beginning and 486.5 MB in the end (delta: 340.8 MB). Free memory was 101.3 MB in the beginning and 295.4 MB in the end (delta: -194.1 MB). Peak memory consumption was 146.7 MB. Max. memory is 7.1 GB. [2020-07-21 15:40:55,276 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 145.8 MB. Free memory is still 120.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 15:40:55,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 621.62 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 100.9 MB in the beginning and 173.3 MB in the end (delta: -72.4 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-07-21 15:40:55,278 INFO L168 Benchmark]: Boogie Preprocessor took 92.14 ms. Allocated memory is still 204.5 MB. Free memory was 173.3 MB in the beginning and 169.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-07-21 15:40:55,279 INFO L168 Benchmark]: RCFGBuilder took 1214.64 ms. Allocated memory was 204.5 MB in the beginning and 237.5 MB in the end (delta: 33.0 MB). Free memory was 169.0 MB in the beginning and 199.5 MB in the end (delta: -30.5 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. [2020-07-21 15:40:55,280 INFO L168 Benchmark]: TraceAbstraction took 16184.70 ms. Allocated memory was 237.5 MB in the beginning and 486.5 MB in the end (delta: 249.0 MB). Free memory was 197.8 MB in the beginning and 295.4 MB in the end (delta: -97.6 MB). Peak memory consumption was 151.4 MB. Max. memory is 7.1 GB. [2020-07-21 15:40:55,282 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 145.8 MB. Free memory is still 120.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 621.62 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 100.9 MB in the beginning and 173.3 MB in the end (delta: -72.4 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.14 ms. Allocated memory is still 204.5 MB. Free memory was 173.3 MB in the beginning and 169.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1214.64 ms. Allocated memory was 204.5 MB in the beginning and 237.5 MB in the end (delta: 33.0 MB). Free memory was 169.0 MB in the beginning and 199.5 MB in the end (delta: -30.5 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16184.70 ms. Allocated memory was 237.5 MB in the beginning and 486.5 MB in the end (delta: 249.0 MB). Free memory was 197.8 MB in the beginning and 295.4 MB in the end (delta: -97.6 MB). Peak memory consumption was 151.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L132] int pumpRunning = 0; [L133] int systemActive = 1; [L364] int cleanupTimeShifts = 4; [L462] int methAndRunningLastTime ; [L502] int waterLevel = 1; [L503] int methaneLevelCritical = 0; [L765] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=85, \old(head)=81, \old(head)=23, \old(methAndRunningLastTime)=28, \old(methaneLevelCritical)=33, \old(pumpRunning)=59, \old(systemActive)=90, \old(waterLevel)=36, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L439] int retValue_acc ; [L440] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L444] FCALL select_helpers() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L445] FCALL select_features() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L446] CALL, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L355] int retValue_acc ; [L358] retValue_acc = 1 [L359] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L446] RET, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L446] tmp = valid_product() [L448] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L450] FCALL setup() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L451] CALL runTest() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L432] CALL __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L467] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L432] RET __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L433] CALL test() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] splverifierCounter = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L65] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L67] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L73] tmp = __VERIFIER_nondet_int() [L75] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L77] CALL waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L520] COND TRUE waterLevel < 2 [L521] waterLevel = waterLevel + 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L77] RET waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___2)) [L101] tmp___1 = __VERIFIER_nondet_int() [L103] COND FALSE !(\read(tmp___1)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L112] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L147] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L149] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L169] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L172] COND TRUE ! pumpRunning VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L174] CALL, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L284] int retValue_acc ; [L285] int tmp ; [L286] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L290] CALL, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L582] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L585] COND FALSE !(waterLevel < 2) [L589] retValue_acc = 0 [L590] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L290] RET, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L290] tmp = isHighWaterSensorDry() [L292] COND FALSE !(\read(tmp)) [L295] tmp___0 = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L297] retValue_acc = tmp___0 [L298] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L174] RET, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L174] tmp = isHighWaterLevel() [L176] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L178] CALL activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L203] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L207] CALL, EXPR isMethaneAlarm() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L228] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L232] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L541] int retValue_acc ; [L544] retValue_acc = methaneLevelCritical [L545] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L232] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L232] retValue_acc = isMethaneLevelCritical() [L234] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L207] RET, EXPR isMethaneAlarm() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L207] tmp = isMethaneAlarm() [L209] COND FALSE !(\read(tmp)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L213] CALL activatePump__wrappee__highWaterSensor() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L197] pumpRunning = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L213] RET activatePump__wrappee__highWaterSensor() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L178] RET activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L149] RET processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L155] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L472] int tmp ; [L473] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L477] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L541] int retValue_acc ; [L544] retValue_acc = methaneLevelCritical [L545] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=2] [L477] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L477] tmp = isMethaneLevelCritical() [L479] COND FALSE !(\read(tmp)) [L495] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L155] RET __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L112] RET timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L65] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L67] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L73] tmp = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L87] CALL changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L532] COND FALSE !(\read(methaneLevelCritical)) [L535] methaneLevelCritical = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L87] RET changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___2)) [L101] tmp___1 = __VERIFIER_nondet_int() [L103] COND FALSE !(\read(tmp___1)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L112] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L140] COND TRUE \read(pumpRunning) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L142] CALL lowerWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L508] COND TRUE waterLevel > 0 [L509] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L142] RET lowerWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L147] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L149] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L169] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L172] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L187] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L149] RET processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L155] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L472] int tmp ; [L473] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L477] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L541] int retValue_acc ; [L544] retValue_acc = methaneLevelCritical [L545] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L477] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L477] tmp = isMethaneLevelCritical() [L479] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L481] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L239] int retValue_acc ; [L242] retValue_acc = pumpRunning [L243] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L481] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L481] tmp___0 = isPumpRunning() [L483] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L484] COND FALSE !(\read(methAndRunningLastTime)) [L489] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L155] RET __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L112] RET timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=1] [L65] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=1] [L67] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=1] [L73] tmp = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=1] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___2)) [L101] tmp___1 = __VERIFIER_nondet_int() [L103] COND FALSE !(\read(tmp___1)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L112] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L140] COND TRUE \read(pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L142] CALL lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L508] COND TRUE waterLevel > 0 [L509] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L142] RET lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L147] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L149] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L169] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L172] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L187] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L149] RET processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L155] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L472] int tmp ; [L473] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L477] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L541] int retValue_acc ; [L544] retValue_acc = methaneLevelCritical [L545] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L477] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L477] tmp = isMethaneLevelCritical() [L479] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=0] [L481] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L239] int retValue_acc ; [L242] retValue_acc = pumpRunning [L243] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L481] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=0] [L481] tmp___0 = isPumpRunning() [L483] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=0] [L484] COND TRUE \read(methAndRunningLastTime) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=0] [L486] CALL __automaton_fail() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L44] __VERIFIER_error() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 237 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.8s, OverallIterations: 14, TraceHistogramMax: 4, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2304 SDtfs, 1978 SDslu, 4127 SDs, 0 SdLazy, 2046 SolverSat, 944 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1748 GetRequests, 1669 SyntacticMatches, 12 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2656occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 1531 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1603 NumberOfCodeBlocks, 1374 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1722 ConstructedInterpolants, 0 QuantifiedInterpolants, 397769 SizeOfPredicates, 37 NumberOfNonLiveVariables, 10281 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 515/533 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...