/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 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 16:22:16,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 16:22:16,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 16:22:16,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 16:22:16,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 16:22:16,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 16:22:16,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 16:22:16,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 16:22:16,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 16:22:16,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 16:22:16,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 16:22:16,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 16:22:16,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 16:22:16,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 16:22:16,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 16:22:16,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 16:22:16,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 16:22:16,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 16:22:16,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 16:22:16,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 16:22:16,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 16:22:16,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 16:22:16,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 16:22:16,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 16:22:16,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 16:22:16,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 16:22:16,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 16:22:16,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 16:22:16,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 16:22:16,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 16:22:16,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 16:22:16,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 16:22:16,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 16:22:16,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 16:22:16,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 16:22:16,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 16:22:16,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 16:22:16,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 16:22:16,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 16:22:16,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 16:22:16,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 16:22:16,700 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 [2020-07-20 16:22:16,714 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 16:22:16,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 16:22:16,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 16:22:16,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 16:22:16,716 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 16:22:16,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 16:22:16,717 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 16:22:16,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 16:22:16,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 16:22:16,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 16:22:16,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 16:22:16,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 16:22:16,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 16:22:16,718 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 16:22:16,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 16:22:16,719 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 16:22:16,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 16:22:16,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 16:22:16,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 16:22:16,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 16:22:16,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 16:22:16,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:22:16,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 16:22:16,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 16:22:16,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 16:22:16,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 16:22:16,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:16,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 16:22:16,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 16:22:16,721 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 -> 4 [2020-07-20 16:22:17,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 16:22:17,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 16:22:17,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 16:22:17,030 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 16:22:17,030 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 16:22:17,031 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-07-20 16:22:17,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0e15e522/2151527bf2374348a6596288a7362ea7/FLAG04be5a5d8 [2020-07-20 16:22:17,672 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 16:22:17,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-07-20 16:22:17,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0e15e522/2151527bf2374348a6596288a7362ea7/FLAG04be5a5d8 [2020-07-20 16:22:18,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0e15e522/2151527bf2374348a6596288a7362ea7 [2020-07-20 16:22:18,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 16:22:18,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 16:22:18,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 16:22:18,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 16:22:18,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 16:22:18,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:22:18" (1/1) ... [2020-07-20 16:22:18,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16223c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:18, skipping insertion in model container [2020-07-20 16:22:18,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:22:18" (1/1) ... [2020-07-20 16:22:18,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 16:22:18,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 16:22:18,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:22:18,532 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 16:22:18,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:22:18,712 INFO L208 MainTranslator]: Completed translation [2020-07-20 16:22:18,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:18 WrapperNode [2020-07-20 16:22:18,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 16:22:18,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 16:22:18,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 16:22:18,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 16:22:18,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:18" (1/1) ... [2020-07-20 16:22:18,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:18" (1/1) ... [2020-07-20 16:22:18,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:18" (1/1) ... [2020-07-20 16:22:18,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:18" (1/1) ... [2020-07-20 16:22:18,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:18" (1/1) ... [2020-07-20 16:22:18,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:18" (1/1) ... [2020-07-20 16:22:18,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:18" (1/1) ... [2020-07-20 16:22:18,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 16:22:18,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 16:22:18,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 16:22:18,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 16:22:18,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:18" (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 [2020-07-20 16:22:18,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 16:22:18,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 16:22:18,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 16:22:18,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 16:22:18,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 16:22:18,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 16:22:18,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 16:22:18,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 16:22:18,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 16:22:18,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-20 16:22:18,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 16:22:18,870 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 16:22:18,870 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 16:22:18,870 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 16:22:18,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 16:22:18,870 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 16:22:18,871 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 16:22:18,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 16:22:18,871 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 16:22:18,871 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 16:22:18,871 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 16:22:18,871 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 16:22:18,871 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 16:22:18,872 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 16:22:18,872 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 16:22:18,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 16:22:18,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 16:22:18,872 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 16:22:18,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 16:22:18,873 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-20 16:22:18,873 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 16:22:18,873 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 16:22:18,873 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 16:22:18,873 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 16:22:18,873 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 16:22:18,874 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 16:22:18,874 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 16:22:18,874 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 16:22:18,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 16:22:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 16:22:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 16:22:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 16:22:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 16:22:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 16:22:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 16:22:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 16:22:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 16:22:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 16:22:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 16:22:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 16:22:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 16:22:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 16:22:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 16:22:18,877 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 16:22:18,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 16:22:18,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 16:22:18,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 16:22:18,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 16:22:18,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 16:22:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 16:22:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 16:22:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 16:22:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-20 16:22:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 16:22:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 16:22:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 16:22:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 16:22:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 16:22:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 16:22:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-20 16:22:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 16:22:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 16:22:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 16:22:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 16:22:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 16:22:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 16:22:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 16:22:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 16:22:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 16:22:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 16:22:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 16:22:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 16:22:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 16:22:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 16:22:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 16:22:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 16:22:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 16:22:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 16:22:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 16:22:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 16:22:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 16:22:18,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 16:22:20,023 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 16:22:20,023 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 16:22:20,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:22:20 BoogieIcfgContainer [2020-07-20 16:22:20,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 16:22:20,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 16:22:20,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 16:22:20,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 16:22:20,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:22:18" (1/3) ... [2020-07-20 16:22:20,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136e139e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:22:20, skipping insertion in model container [2020-07-20 16:22:20,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:18" (2/3) ... [2020-07-20 16:22:20,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136e139e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:22:20, skipping insertion in model container [2020-07-20 16:22:20,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:22:20" (3/3) ... [2020-07-20 16:22:20,038 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product39.cil.c [2020-07-20 16:22:20,050 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 16:22:20,059 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 16:22:20,073 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 16:22:20,100 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 16:22:20,100 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 16:22:20,100 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 16:22:20,101 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 16:22:20,101 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 16:22:20,101 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 16:22:20,101 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 16:22:20,101 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 16:22:20,125 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-07-20 16:22:20,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 16:22:20,135 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:20,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:20,137 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:20,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:20,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1081228888, now seen corresponding path program 1 times [2020-07-20 16:22:20,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:20,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647005827] [2020-07-20 16:22:20,150 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:22:20,639 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:20,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:20,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 16:22:20,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:20,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:20,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647005827] [2020-07-20 16:22:20,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:20,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 16:22:20,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109574900] [2020-07-20 16:22:20,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 16:22:20,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:20,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 16:22:20,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:22:20,710 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 2 states. [2020-07-20 16:22:20,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:20,751 INFO L93 Difference]: Finished difference Result 258 states and 323 transitions. [2020-07-20 16:22:20,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 16:22:20,753 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 16:22:20,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:20,765 INFO L225 Difference]: With dead ends: 258 [2020-07-20 16:22:20,765 INFO L226 Difference]: Without dead ends: 129 [2020-07-20 16:22:20,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:22:20,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-07-20 16:22:20,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-07-20 16:22:20,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-07-20 16:22:20,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2020-07-20 16:22:20,831 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 46 [2020-07-20 16:22:20,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:20,832 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2020-07-20 16:22:20,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 16:22:20,833 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2020-07-20 16:22:20,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 16:22:20,836 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:20,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:21,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:21,053 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:21,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:21,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1618039840, now seen corresponding path program 1 times [2020-07-20 16:22:21,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:21,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166288082] [2020-07-20 16:22:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:22:21,461 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:21,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:21,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 16:22:21,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:21,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:21,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166288082] [2020-07-20 16:22:21,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:21,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:21,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17222548] [2020-07-20 16:22:21,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:21,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:21,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:21,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:21,515 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand 3 states. [2020-07-20 16:22:21,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:21,537 INFO L93 Difference]: Finished difference Result 201 states and 237 transitions. [2020-07-20 16:22:21,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:21,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 16:22:21,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:21,540 INFO L225 Difference]: With dead ends: 201 [2020-07-20 16:22:21,540 INFO L226 Difference]: Without dead ends: 120 [2020-07-20 16:22:21,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:21,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-07-20 16:22:21,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-07-20 16:22:21,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-20 16:22:21,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2020-07-20 16:22:21,560 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 47 [2020-07-20 16:22:21,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:21,560 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2020-07-20 16:22:21,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:21,560 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2020-07-20 16:22:21,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 16:22:21,563 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:21,563 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] [2020-07-20 16:22:21,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:21,778 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:21,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1339561462, now seen corresponding path program 1 times [2020-07-20 16:22:21,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:21,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454843476] [2020-07-20 16:22:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:22:22,243 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:22,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:22,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 16:22:22,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:22,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:22,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454843476] [2020-07-20 16:22:22,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:22,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:22,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167259980] [2020-07-20 16:22:22,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:22,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:22,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:22,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:22,304 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand 3 states. [2020-07-20 16:22:22,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:22,358 INFO L93 Difference]: Finished difference Result 310 states and 375 transitions. [2020-07-20 16:22:22,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:22,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-20 16:22:22,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:22,369 INFO L225 Difference]: With dead ends: 310 [2020-07-20 16:22:22,369 INFO L226 Difference]: Without dead ends: 214 [2020-07-20 16:22:22,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-20 16:22:22,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 210. [2020-07-20 16:22:22,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-07-20 16:22:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 253 transitions. [2020-07-20 16:22:22,428 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 253 transitions. Word has length 51 [2020-07-20 16:22:22,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:22,428 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 253 transitions. [2020-07-20 16:22:22,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:22,429 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 253 transitions. [2020-07-20 16:22:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 16:22:22,432 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:22,432 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] [2020-07-20 16:22:22,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:22,646 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:22,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:22,647 INFO L82 PathProgramCache]: Analyzing trace with hash 857479477, now seen corresponding path program 1 times [2020-07-20 16:22:22,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:22,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800297612] [2020-07-20 16:22:22,649 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:22:23,143 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:23,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:23,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:22:23,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:23,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:23,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800297612] [2020-07-20 16:22:23,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:23,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:23,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521094916] [2020-07-20 16:22:23,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:23,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:23,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:23,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:23,199 INFO L87 Difference]: Start difference. First operand 210 states and 253 transitions. Second operand 6 states. [2020-07-20 16:22:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:23,479 INFO L93 Difference]: Finished difference Result 506 states and 639 transitions. [2020-07-20 16:22:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:22:23,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-20 16:22:23,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:23,484 INFO L225 Difference]: With dead ends: 506 [2020-07-20 16:22:23,484 INFO L226 Difference]: Without dead ends: 320 [2020-07-20 16:22:23,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:22:23,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-07-20 16:22:23,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 310. [2020-07-20 16:22:23,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-07-20 16:22:23,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 377 transitions. [2020-07-20 16:22:23,518 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 377 transitions. Word has length 57 [2020-07-20 16:22:23,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:23,519 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 377 transitions. [2020-07-20 16:22:23,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:23,519 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 377 transitions. [2020-07-20 16:22:23,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 16:22:23,523 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:23,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:23,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:23,724 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:23,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:23,724 INFO L82 PathProgramCache]: Analyzing trace with hash -2089178819, now seen corresponding path program 1 times [2020-07-20 16:22:23,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:23,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114243682] [2020-07-20 16:22:23,726 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:22:23,868 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 16:22:23,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:23,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 16:22:23,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:23,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:23,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114243682] [2020-07-20 16:22:23,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:23,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 16:22:23,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987516253] [2020-07-20 16:22:23,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 16:22:23,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:23,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 16:22:23,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:23,905 INFO L87 Difference]: Start difference. First operand 310 states and 377 transitions. Second operand 5 states. [2020-07-20 16:22:23,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:23,931 INFO L93 Difference]: Finished difference Result 610 states and 772 transitions. [2020-07-20 16:22:23,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 16:22:23,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-07-20 16:22:23,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:23,935 INFO L225 Difference]: With dead ends: 610 [2020-07-20 16:22:23,936 INFO L226 Difference]: Without dead ends: 324 [2020-07-20 16:22:23,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:23,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-07-20 16:22:23,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 318. [2020-07-20 16:22:23,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-07-20 16:22:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 385 transitions. [2020-07-20 16:22:23,964 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 385 transitions. Word has length 79 [2020-07-20 16:22:23,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:23,965 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 385 transitions. [2020-07-20 16:22:23,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 16:22:23,965 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 385 transitions. [2020-07-20 16:22:23,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 16:22:23,973 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:23,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:24,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:24,188 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:24,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:24,189 INFO L82 PathProgramCache]: Analyzing trace with hash -2066546565, now seen corresponding path program 1 times [2020-07-20 16:22:24,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:24,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622728225] [2020-07-20 16:22:24,191 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:22:24,683 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:24,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:24,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 16:22:24,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:24,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:24,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622728225] [2020-07-20 16:22:24,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:24,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:24,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401338659] [2020-07-20 16:22:24,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:24,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:24,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:24,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:24,724 INFO L87 Difference]: Start difference. First operand 318 states and 385 transitions. Second operand 3 states. [2020-07-20 16:22:24,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:24,760 INFO L93 Difference]: Finished difference Result 882 states and 1151 transitions. [2020-07-20 16:22:24,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:24,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-07-20 16:22:24,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:24,765 INFO L225 Difference]: With dead ends: 882 [2020-07-20 16:22:24,765 INFO L226 Difference]: Without dead ends: 588 [2020-07-20 16:22:24,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:24,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-07-20 16:22:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 585. [2020-07-20 16:22:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-07-20 16:22:24,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 746 transitions. [2020-07-20 16:22:24,804 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 746 transitions. Word has length 79 [2020-07-20 16:22:24,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:24,804 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 746 transitions. [2020-07-20 16:22:24,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:24,804 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 746 transitions. [2020-07-20 16:22:24,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 16:22:24,807 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:24,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:25,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:25,022 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:25,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:25,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1180296478, now seen corresponding path program 1 times [2020-07-20 16:22:25,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:25,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630985576] [2020-07-20 16:22:25,024 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:22:25,390 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:25,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:25,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:22:25,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:25,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:25,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630985576] [2020-07-20 16:22:25,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:25,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:25,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617649887] [2020-07-20 16:22:25,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:25,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:25,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:25,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:25,429 INFO L87 Difference]: Start difference. First operand 585 states and 746 transitions. Second operand 6 states. [2020-07-20 16:22:25,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:25,476 INFO L93 Difference]: Finished difference Result 1156 states and 1506 transitions. [2020-07-20 16:22:25,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 16:22:25,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-20 16:22:25,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:25,481 INFO L225 Difference]: With dead ends: 1156 [2020-07-20 16:22:25,481 INFO L226 Difference]: Without dead ends: 595 [2020-07-20 16:22:25,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 16:22:25,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2020-07-20 16:22:25,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2020-07-20 16:22:25,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-07-20 16:22:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 758 transitions. [2020-07-20 16:22:25,519 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 758 transitions. Word has length 79 [2020-07-20 16:22:25,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:25,519 INFO L479 AbstractCegarLoop]: Abstraction has 595 states and 758 transitions. [2020-07-20 16:22:25,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:25,520 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 758 transitions. [2020-07-20 16:22:25,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 16:22:25,522 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:25,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:25,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:25,737 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:25,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:25,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1202928732, now seen corresponding path program 1 times [2020-07-20 16:22:25,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:25,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687600131] [2020-07-20 16:22:25,739 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:22:25,910 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 16:22:25,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:25,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 16:22:25,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:25,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:25,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687600131] [2020-07-20 16:22:25,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:25,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 16:22:25,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598505440] [2020-07-20 16:22:25,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 16:22:25,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:25,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 16:22:25,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:25,946 INFO L87 Difference]: Start difference. First operand 595 states and 758 transitions. Second operand 5 states. [2020-07-20 16:22:25,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:25,979 INFO L93 Difference]: Finished difference Result 1148 states and 1506 transitions. [2020-07-20 16:22:25,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 16:22:25,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-07-20 16:22:25,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:25,984 INFO L225 Difference]: With dead ends: 1148 [2020-07-20 16:22:25,984 INFO L226 Difference]: Without dead ends: 577 [2020-07-20 16:22:25,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:25,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-07-20 16:22:26,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2020-07-20 16:22:26,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-07-20 16:22:26,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 718 transitions. [2020-07-20 16:22:26,015 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 718 transitions. Word has length 79 [2020-07-20 16:22:26,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:26,015 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 718 transitions. [2020-07-20 16:22:26,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 16:22:26,016 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 718 transitions. [2020-07-20 16:22:26,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-20 16:22:26,017 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:26,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:26,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:26,231 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:26,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:26,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1381014239, now seen corresponding path program 1 times [2020-07-20 16:22:26,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:26,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42238310] [2020-07-20 16:22:26,234 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:22:26,634 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:26,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:26,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 16:22:26,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:26,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:26,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42238310] [2020-07-20 16:22:26,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:26,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:26,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91302711] [2020-07-20 16:22:26,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:26,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:26,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:26,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:26,680 INFO L87 Difference]: Start difference. First operand 577 states and 718 transitions. Second operand 6 states. [2020-07-20 16:22:26,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:26,920 INFO L93 Difference]: Finished difference Result 1648 states and 2112 transitions. [2020-07-20 16:22:26,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:22:26,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-07-20 16:22:26,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:26,928 INFO L225 Difference]: With dead ends: 1648 [2020-07-20 16:22:26,928 INFO L226 Difference]: Without dead ends: 1095 [2020-07-20 16:22:26,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:22:26,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-07-20 16:22:26,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1079. [2020-07-20 16:22:26,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2020-07-20 16:22:26,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1350 transitions. [2020-07-20 16:22:26,987 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1350 transitions. Word has length 83 [2020-07-20 16:22:26,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:26,987 INFO L479 AbstractCegarLoop]: Abstraction has 1079 states and 1350 transitions. [2020-07-20 16:22:26,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:26,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1350 transitions. [2020-07-20 16:22:26,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-20 16:22:26,990 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:26,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:27,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:27,205 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:27,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:27,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1146127589, now seen corresponding path program 1 times [2020-07-20 16:22:27,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:27,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328489325] [2020-07-20 16:22:27,207 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:22:27,569 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:27,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 16:22:27,570 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:22:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 16:22:27,656 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:22:27,948 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 16:22:27,948 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 16:22:28,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:28,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:22:28 BoogieIcfgContainer [2020-07-20 16:22:28,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 16:22:28,313 INFO L168 Benchmark]: Toolchain (without parser) took 10290.78 ms. Allocated memory was 136.3 MB in the beginning and 336.1 MB in the end (delta: 199.8 MB). Free memory was 100.1 MB in the beginning and 206.3 MB in the end (delta: -106.2 MB). Peak memory consumption was 93.6 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:28,314 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 16:22:28,315 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.88 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 99.7 MB in the beginning and 164.8 MB in the end (delta: -65.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:28,315 INFO L168 Benchmark]: Boogie Preprocessor took 89.89 ms. Allocated memory is still 200.3 MB. Free memory was 164.8 MB in the beginning and 160.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:28,316 INFO L168 Benchmark]: RCFGBuilder took 1225.74 ms. Allocated memory was 200.3 MB in the beginning and 229.1 MB in the end (delta: 28.8 MB). Free memory was 160.6 MB in the beginning and 190.1 MB in the end (delta: -29.5 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:28,317 INFO L168 Benchmark]: TraceAbstraction took 8280.41 ms. Allocated memory was 229.1 MB in the beginning and 336.1 MB in the end (delta: 107.0 MB). Free memory was 190.1 MB in the beginning and 206.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 90.8 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:28,320 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 688.88 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 99.7 MB in the beginning and 164.8 MB in the end (delta: -65.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.89 ms. Allocated memory is still 200.3 MB. Free memory was 164.8 MB in the beginning and 160.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1225.74 ms. Allocated memory was 200.3 MB in the beginning and 229.1 MB in the end (delta: 28.8 MB). Free memory was 160.6 MB in the beginning and 190.1 MB in the end (delta: -29.5 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8280.41 ms. Allocated memory was 229.1 MB in the beginning and 336.1 MB in the end (delta: 107.0 MB). Free memory was 190.1 MB in the beginning and 206.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 90.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L450] int waterLevel = 1; [L451] int methaneLevelCritical = 0; [L617] int pumpRunning = 0; [L618] int systemActive = 1; [L848] int cleanupTimeShifts = 4; VAL [\old(cleanupTimeShifts)=95, \old(head)=56, \old(head)=69, \old(methaneLevelCritical)=40, \old(pumpRunning)=88, \old(systemActive)=60, \old(waterLevel)=70, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L921] int retValue_acc ; [L922] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L926] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L927] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L928] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L839] int retValue_acc ; [L842] retValue_acc = 1 [L843] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L928] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L928] tmp = valid_product() [L930] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L932] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L933] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L915] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L557] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L559] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L565] tmp = __VERIFIER_nondet_int() [L567] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L569] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L468] COND TRUE waterLevel < 2 [L469] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L569] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L579] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L480] COND FALSE !(\read(methaneLevelCritical)) [L483] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L579] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=-1, waterLevel=2] [L602] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L624] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L631] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L633] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L679] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L682] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L697] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L653] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L656] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L658] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L776] int retValue_acc ; [L777] int tmp ; [L778] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L782] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L530] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L533] COND FALSE !(waterLevel < 2) [L537] retValue_acc = 0 [L538] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L782] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L782] tmp = isHighWaterSensorDry() [L784] COND FALSE !(\read(tmp)) [L787] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L789] retValue_acc = tmp___0 [L790] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L658] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L658] tmp = isHighWaterLevel() [L660] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L662] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L707] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L662] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L697] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L633] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L639] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L410] int tmp ; [L411] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L415] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L415] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L415] tmp = isMethaneLevelCritical() [L417] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L419] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L731] int retValue_acc ; [L734] retValue_acc = pumpRunning [L735] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L419] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L419] tmp___0 = isPumpRunning() [L421] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L423] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L439] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1367 SDtfs, 381 SDslu, 2664 SDs, 0 SdLazy, 200 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 596 GetRequests, 569 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1079occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 39 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 687 NumberOfCodeBlocks, 529 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 591 ConstructedInterpolants, 0 QuantifiedInterpolants, 67969 SizeOfPredicates, 21 NumberOfNonLiveVariables, 5379 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...