/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:50:25,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:50:25,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:50:25,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:50:25,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:50:25,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:50:25,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:50:25,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:50:25,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:50:25,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:50:25,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:50:25,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:50:25,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:50:25,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:50:25,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:50:25,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:50:25,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:50:25,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:50:25,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:50:25,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:50:25,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:50:25,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:50:25,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:50:25,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:50:25,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 12:50:25,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 12:50:25,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 12:50:25,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 12:50:25,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 12:50:25,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 12:50:25,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 12:50:25,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 12:50:25,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 12:50:25,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 12:50:25,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 12:50:25,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 12:50:25,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 12:50:25,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 12:50:25,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:50:25,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:50:25,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:50:25,690 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 12:50:25,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:50:25,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:50:25,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:50:25,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:50:25,716 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:50:25,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:50:25,716 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:50:25,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:50:25,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:50:25,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:50:25,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:50:25,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:50:25,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:50:25,719 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:50:25,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:50:25,719 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:50:25,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:50:25,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:50:25,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:50:25,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:50:25,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:50:25,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:50:25,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:50:25,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:50:25,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:50:25,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:50:25,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:25,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:50:25,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:50:25,723 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 12:50:26,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:50:26,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:50:26,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:50:26,028 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:50:26,028 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:50:26,029 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-07-21 12:50:26,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae7e86774/4aa92b315b854fc2955872298654235e/FLAG268269c70 [2020-07-21 12:50:26,624 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:50:26,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-07-21 12:50:26,652 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae7e86774/4aa92b315b854fc2955872298654235e/FLAG268269c70 [2020-07-21 12:50:26,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae7e86774/4aa92b315b854fc2955872298654235e [2020-07-21 12:50:26,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:50:26,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:50:26,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:50:26,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:50:26,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:50:26,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:50:26" (1/1) ... [2020-07-21 12:50:26,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9fa044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:26, skipping insertion in model container [2020-07-21 12:50:26,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:50:26" (1/1) ... [2020-07-21 12:50:26,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:50:26,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:50:27,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:50:27,407 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:50:27,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:50:27,562 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:50:27,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27 WrapperNode [2020-07-21 12:50:27,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:50:27,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:50:27,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:50:27,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:50:27,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (1/1) ... [2020-07-21 12:50:27,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (1/1) ... [2020-07-21 12:50:27,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (1/1) ... [2020-07-21 12:50:27,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (1/1) ... [2020-07-21 12:50:27,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (1/1) ... [2020-07-21 12:50:27,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (1/1) ... [2020-07-21 12:50:27,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (1/1) ... [2020-07-21 12:50:27,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:50:27,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:50:27,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:50:27,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:50:27,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:50:27,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:50:27,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:50:27,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 12:50:27,755 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 12:50:27,755 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 12:50:27,756 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 12:50:27,756 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 12:50:27,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:50:27,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 12:50:27,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 12:50:27,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 12:50:27,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 12:50:27,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 12:50:27,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 12:50:27,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 12:50:27,759 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 12:50:27,759 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 12:50:27,759 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 12:50:27,759 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 12:50:27,760 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 12:50:27,760 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 12:50:27,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 12:50:27,760 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 12:50:27,760 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 12:50:27,760 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 12:50:27,761 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 12:50:27,761 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 12:50:27,761 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 12:50:27,761 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 12:50:27,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 12:50:27,762 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 12:50:27,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 12:50:27,762 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-21 12:50:27,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-21 12:50:27,763 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 12:50:27,763 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 12:50:27,763 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 12:50:27,763 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 12:50:27,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:50:27,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 12:50:27,764 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 12:50:27,764 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 12:50:27,764 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 12:50:27,764 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 12:50:27,764 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 12:50:27,764 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 12:50:27,766 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 12:50:27,766 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 12:50:27,766 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 12:50:27,767 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 12:50:27,767 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 12:50:27,767 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 12:50:27,767 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 12:50:27,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:50:27,767 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 12:50:27,767 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 12:50:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 12:50:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 12:50:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 12:50:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 12:50:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 12:50:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 12:50:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 12:50:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 12:50:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 12:50:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 12:50:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 12:50:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 12:50:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 12:50:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 12:50:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 12:50:27,771 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 12:50:27,771 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 12:50:27,771 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 12:50:27,771 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 12:50:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 12:50:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 12:50:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-21 12:50:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 12:50:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 12:50:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 12:50:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-21 12:50:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 12:50:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 12:50:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 12:50:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 12:50:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 12:50:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:50:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 12:50:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:50:28,883 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:50:28,883 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 12:50:28,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:50:28 BoogieIcfgContainer [2020-07-21 12:50:28,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:50:28,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:50:28,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:50:28,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:50:28,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:50:26" (1/3) ... [2020-07-21 12:50:28,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3a4979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:50:28, skipping insertion in model container [2020-07-21 12:50:28,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (2/3) ... [2020-07-21 12:50:28,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3a4979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:50:28, skipping insertion in model container [2020-07-21 12:50:28,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:50:28" (3/3) ... [2020-07-21 12:50:28,899 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-07-21 12:50:28,909 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:50:28,919 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:50:28,933 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:50:28,958 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:50:28,958 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:50:28,958 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:50:28,958 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:50:28,959 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:50:28,959 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:50:28,959 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:50:28,959 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:50:28,982 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-07-21 12:50:28,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 12:50:28,992 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:28,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:28,993 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:28,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:29,000 INFO L82 PathProgramCache]: Analyzing trace with hash 591069479, now seen corresponding path program 1 times [2020-07-21 12:50:29,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:29,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993110899] [2020-07-21 12:50:29,010 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:29,433 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:29,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:29,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:50:29,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:29,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:29,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993110899] [2020-07-21 12:50:29,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:29,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:50:29,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058830716] [2020-07-21 12:50:29,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:50:29,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:29,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:50:29,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:50:29,505 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 2 states. [2020-07-21 12:50:29,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:29,545 INFO L93 Difference]: Finished difference Result 218 states and 271 transitions. [2020-07-21 12:50:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:50:29,548 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 12:50:29,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:29,564 INFO L225 Difference]: With dead ends: 218 [2020-07-21 12:50:29,564 INFO L226 Difference]: Without dead ends: 109 [2020-07-21 12:50:29,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:50:29,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-21 12:50:29,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-07-21 12:50:29,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-21 12:50:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-07-21 12:50:29,622 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-07-21 12:50:29,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:29,623 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-07-21 12:50:29,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:50:29,624 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-07-21 12:50:29,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 12:50:29,627 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:29,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:29,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:29,842 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:29,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:29,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1158422735, now seen corresponding path program 1 times [2020-07-21 12:50:29,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:29,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658321274] [2020-07-21 12:50:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:30,201 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:30,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:30,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:50:30,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:30,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:30,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658321274] [2020-07-21 12:50:30,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:30,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:30,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118627859] [2020-07-21 12:50:30,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:30,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:30,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:30,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:30,266 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 3 states. [2020-07-21 12:50:30,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:30,303 INFO L93 Difference]: Finished difference Result 163 states and 189 transitions. [2020-07-21 12:50:30,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:30,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 12:50:30,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:30,306 INFO L225 Difference]: With dead ends: 163 [2020-07-21 12:50:30,307 INFO L226 Difference]: Without dead ends: 100 [2020-07-21 12:50:30,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:30,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-21 12:50:30,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-07-21 12:50:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-21 12:50:30,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-07-21 12:50:30,338 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-07-21 12:50:30,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:30,342 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-07-21 12:50:30,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:30,342 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-07-21 12:50:30,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 12:50:30,344 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:30,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:30,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:30,562 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:30,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:30,562 INFO L82 PathProgramCache]: Analyzing trace with hash -870171294, now seen corresponding path program 1 times [2020-07-21 12:50:30,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:30,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341048822] [2020-07-21 12:50:30,563 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:30,890 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:30,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:30,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 12:50:30,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:30,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:30,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341048822] [2020-07-21 12:50:30,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:30,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:30,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116162648] [2020-07-21 12:50:30,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:30,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:30,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:30,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:30,937 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 3 states. [2020-07-21 12:50:30,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:30,952 INFO L93 Difference]: Finished difference Result 176 states and 207 transitions. [2020-07-21 12:50:30,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:30,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-21 12:50:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:30,955 INFO L225 Difference]: With dead ends: 176 [2020-07-21 12:50:30,955 INFO L226 Difference]: Without dead ends: 100 [2020-07-21 12:50:30,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:30,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-21 12:50:30,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-07-21 12:50:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-21 12:50:30,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-07-21 12:50:30,967 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-07-21 12:50:30,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:30,967 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-07-21 12:50:30,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:30,967 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-07-21 12:50:30,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-21 12:50:30,970 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:30,970 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] [2020-07-21 12:50:31,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:31,184 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:31,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:31,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1248327953, now seen corresponding path program 1 times [2020-07-21 12:50:31,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:31,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235143297] [2020-07-21 12:50:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:31,500 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:31,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:31,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 12:50:31,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:31,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:31,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235143297] [2020-07-21 12:50:31,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:31,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:31,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718808642] [2020-07-21 12:50:31,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:31,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:31,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:31,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:31,547 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-07-21 12:50:32,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:32,012 INFO L93 Difference]: Finished difference Result 233 states and 274 transitions. [2020-07-21 12:50:32,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:50:32,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-07-21 12:50:32,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:32,016 INFO L225 Difference]: With dead ends: 233 [2020-07-21 12:50:32,017 INFO L226 Difference]: Without dead ends: 157 [2020-07-21 12:50:32,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 12:50:32,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-07-21 12:50:32,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 154. [2020-07-21 12:50:32,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-07-21 12:50:32,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 174 transitions. [2020-07-21 12:50:32,074 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 174 transitions. Word has length 60 [2020-07-21 12:50:32,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:32,075 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 174 transitions. [2020-07-21 12:50:32,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:32,076 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 174 transitions. [2020-07-21 12:50:32,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-07-21 12:50:32,081 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:32,081 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] [2020-07-21 12:50:32,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:32,282 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:32,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:32,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1574039554, now seen corresponding path program 1 times [2020-07-21 12:50:32,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:32,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347491435] [2020-07-21 12:50:32,283 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:32,584 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:32,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:32,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:50:32,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:32,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:32,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:32,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347491435] [2020-07-21 12:50:32,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:32,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:32,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648348752] [2020-07-21 12:50:32,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:32,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:32,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:32,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:32,635 INFO L87 Difference]: Start difference. First operand 154 states and 174 transitions. Second operand 6 states. [2020-07-21 12:50:32,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:32,819 INFO L93 Difference]: Finished difference Result 161 states and 181 transitions. [2020-07-21 12:50:32,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:50:32,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-07-21 12:50:32,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:32,823 INFO L225 Difference]: With dead ends: 161 [2020-07-21 12:50:32,828 INFO L226 Difference]: Without dead ends: 158 [2020-07-21 12:50:32,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:50:32,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-21 12:50:32,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2020-07-21 12:50:32,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-07-21 12:50:32,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 173 transitions. [2020-07-21 12:50:32,852 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 173 transitions. Word has length 74 [2020-07-21 12:50:32,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:32,853 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 173 transitions. [2020-07-21 12:50:32,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:32,854 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 173 transitions. [2020-07-21 12:50:32,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-07-21 12:50:32,858 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:32,859 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] [2020-07-21 12:50:33,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:33,072 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:33,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:33,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1143489070, now seen corresponding path program 1 times [2020-07-21 12:50:33,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:33,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461473534] [2020-07-21 12:50:33,074 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:33,317 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:33,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:33,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 12:50:33,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:33,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:33,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461473534] [2020-07-21 12:50:33,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:33,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:33,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081631213] [2020-07-21 12:50:33,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:33,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:33,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:33,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:33,379 INFO L87 Difference]: Start difference. First operand 154 states and 173 transitions. Second operand 6 states. [2020-07-21 12:50:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:33,551 INFO L93 Difference]: Finished difference Result 403 states and 471 transitions. [2020-07-21 12:50:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:50:33,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-07-21 12:50:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:33,557 INFO L225 Difference]: With dead ends: 403 [2020-07-21 12:50:33,558 INFO L226 Difference]: Without dead ends: 273 [2020-07-21 12:50:33,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:50:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-07-21 12:50:33,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 269. [2020-07-21 12:50:33,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-07-21 12:50:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 305 transitions. [2020-07-21 12:50:33,593 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 305 transitions. Word has length 75 [2020-07-21 12:50:33,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:33,594 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 305 transitions. [2020-07-21 12:50:33,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:33,594 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 305 transitions. [2020-07-21 12:50:33,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 12:50:33,596 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:33,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:33,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:33,811 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:33,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1769050262, now seen corresponding path program 1 times [2020-07-21 12:50:33,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:33,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105880317] [2020-07-21 12:50:33,814 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:34,118 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:34,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:34,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:50:34,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:34,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:34,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105880317] [2020-07-21 12:50:34,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:34,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:34,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344751938] [2020-07-21 12:50:34,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:34,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:34,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:34,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:34,155 INFO L87 Difference]: Start difference. First operand 269 states and 305 transitions. Second operand 6 states. [2020-07-21 12:50:34,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:34,202 INFO L93 Difference]: Finished difference Result 402 states and 457 transitions. [2020-07-21 12:50:34,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 12:50:34,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-21 12:50:34,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:34,206 INFO L225 Difference]: With dead ends: 402 [2020-07-21 12:50:34,207 INFO L226 Difference]: Without dead ends: 279 [2020-07-21 12:50:34,208 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 [2020-07-21 12:50:34,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-07-21 12:50:34,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2020-07-21 12:50:34,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-07-21 12:50:34,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 315 transitions. [2020-07-21 12:50:34,241 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 315 transitions. Word has length 79 [2020-07-21 12:50:34,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:34,242 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 315 transitions. [2020-07-21 12:50:34,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:34,242 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 315 transitions. [2020-07-21 12:50:34,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 12:50:34,247 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:34,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:34,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:34,462 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:34,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:34,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1259577172, now seen corresponding path program 1 times [2020-07-21 12:50:34,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:34,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463376723] [2020-07-21 12:50:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:34,675 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:34,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:34,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:50:34,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:34,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:34,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463376723] [2020-07-21 12:50:34,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:34,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 12:50:34,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261790899] [2020-07-21 12:50:34,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 12:50:34,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:34,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 12:50:34,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:50:34,708 INFO L87 Difference]: Start difference. First operand 279 states and 315 transitions. Second operand 5 states. [2020-07-21 12:50:34,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:34,747 INFO L93 Difference]: Finished difference Result 548 states and 632 transitions. [2020-07-21 12:50:34,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 12:50:34,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-07-21 12:50:34,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:34,752 INFO L225 Difference]: With dead ends: 548 [2020-07-21 12:50:34,752 INFO L226 Difference]: Without dead ends: 293 [2020-07-21 12:50:34,754 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 [2020-07-21 12:50:34,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-07-21 12:50:34,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 287. [2020-07-21 12:50:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-07-21 12:50:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 323 transitions. [2020-07-21 12:50:34,784 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 323 transitions. Word has length 79 [2020-07-21 12:50:34,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:34,784 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 323 transitions. [2020-07-21 12:50:34,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 12:50:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 323 transitions. [2020-07-21 12:50:34,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 12:50:34,790 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:34,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:34,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:35,000 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:35,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:35,001 INFO L82 PathProgramCache]: Analyzing trace with hash -750526669, now seen corresponding path program 1 times [2020-07-21 12:50:35,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:35,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031648590] [2020-07-21 12:50:35,002 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:35,283 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:35,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:35,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 12:50:35,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:35,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:35,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:35,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031648590] [2020-07-21 12:50:35,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:35,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:35,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329821971] [2020-07-21 12:50:35,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:35,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:35,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:35,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:35,319 INFO L87 Difference]: Start difference. First operand 287 states and 323 transitions. Second operand 3 states. [2020-07-21 12:50:35,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:35,365 INFO L93 Difference]: Finished difference Result 761 states and 897 transitions. [2020-07-21 12:50:35,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:35,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-07-21 12:50:35,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:35,369 INFO L225 Difference]: With dead ends: 761 [2020-07-21 12:50:35,370 INFO L226 Difference]: Without dead ends: 498 [2020-07-21 12:50:35,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-07-21 12:50:35,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 495. [2020-07-21 12:50:35,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-07-21 12:50:35,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 572 transitions. [2020-07-21 12:50:35,405 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 572 transitions. Word has length 79 [2020-07-21 12:50:35,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:35,406 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 572 transitions. [2020-07-21 12:50:35,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:35,406 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 572 transitions. [2020-07-21 12:50:35,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-21 12:50:35,408 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:35,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:35,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:35,624 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:35,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:35,624 INFO L82 PathProgramCache]: Analyzing trace with hash 893739545, now seen corresponding path program 1 times [2020-07-21 12:50:35,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:35,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842524593] [2020-07-21 12:50:35,625 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:35,924 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:35,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 12:50:35,925 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:50:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 12:50:36,083 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:50:36,385 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 12:50:36,386 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 12:50:36,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:36,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:50:36 BoogieIcfgContainer [2020-07-21 12:50:36,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 12:50:36,788 INFO L168 Benchmark]: Toolchain (without parser) took 9889.72 ms. Allocated memory was 145.2 MB in the beginning and 314.6 MB in the end (delta: 169.3 MB). Free memory was 102.5 MB in the beginning and 118.0 MB in the end (delta: -15.5 MB). Peak memory consumption was 153.9 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:36,788 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 12:50:36,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.51 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 102.1 MB in the beginning and 171.3 MB in the end (delta: -69.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:36,790 INFO L168 Benchmark]: Boogie Preprocessor took 106.93 ms. Allocated memory is still 202.9 MB. Free memory was 171.3 MB in the beginning and 167.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:36,792 INFO L168 Benchmark]: RCFGBuilder took 1219.90 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 167.2 MB in the beginning and 198.0 MB in the end (delta: -30.8 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:36,793 INFO L168 Benchmark]: TraceAbstraction took 7893.32 ms. Allocated memory was 235.9 MB in the beginning and 314.6 MB in the end (delta: 78.6 MB). Free memory was 198.0 MB in the beginning and 118.0 MB in the end (delta: 80.0 MB). Peak memory consumption was 158.7 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:36,800 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 663.51 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 102.1 MB in the beginning and 171.3 MB in the end (delta: -69.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.93 ms. Allocated memory is still 202.9 MB. Free memory was 171.3 MB in the beginning and 167.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1219.90 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 167.2 MB in the beginning and 198.0 MB in the end (delta: -30.8 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7893.32 ms. Allocated memory was 235.9 MB in the beginning and 314.6 MB in the end (delta: 78.6 MB). Free memory was 198.0 MB in the beginning and 118.0 MB in the end (delta: 80.0 MB). Peak memory consumption was 158.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 514]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int waterLevel = 1; [L525] int methaneLevelCritical = 0; [L689] int pumpRunning = 0; [L690] int systemActive = 1; VAL [\old(cleanupTimeShifts)=87, \old(head)=62, \old(head)=37, \old(methaneLevelCritical)=46, \old(pumpRunning)=70, \old(systemActive)=40, \old(waterLevel)=38, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L121] int retValue_acc ; [L122] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L126] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L127] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L902] int retValue_acc ; [L905] retValue_acc = 1 [L906] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L128] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L132] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L133] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L112] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L620] int splverifierCounter ; [L621] int tmp ; [L622] int tmp___0 ; [L623] int tmp___1 ; [L624] int tmp___2 ; [L627] 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] [L629] 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] [L631] 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] [L637] tmp = __VERIFIER_nondet_int() [L639] 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] [L641] 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] [L542] COND TRUE waterLevel < 2 [L543] 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] [L641] 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] [L647] tmp___0 = __VERIFIER_nondet_int() [L649] 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] [L651] 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] [L554] COND FALSE !(\read(methaneLevelCritical)) [L557] 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] [L651] 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] [L657] tmp___2 = __VERIFIER_nondet_int() [L659] COND FALSE !(\read(tmp___2)) [L665] tmp___1 = __VERIFIER_nondet_int() [L667] COND TRUE \read(tmp___1) 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___1=-1, tmp___2=0, waterLevel=2] [L674] 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] [L697] 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] [L704] 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] [L706] 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] [L726] 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] [L729] 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] [L731] 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] [L823] int retValue_acc ; [L824] int tmp ; [L825] 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] [L829] 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] [L604] 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] [L607] COND FALSE !(waterLevel < 2) [L611] retValue_acc = 0 [L612] 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] [L829] 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] [L829] tmp = isHighWaterSensorDry() [L831] COND FALSE !(\read(tmp)) [L834] 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] [L836] retValue_acc = tmp___0 [L837] 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] [L731] 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] [L731] tmp = isHighWaterLevel() [L733] 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] [L735] 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] [L754] 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] [L735] 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] [L706] 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] [L712] 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] [L851] int tmp ; [L852] 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] [L856] 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] [L563] int retValue_acc ; [L566] retValue_acc = methaneLevelCritical [L567] 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] [L856] 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] [L856] tmp = isMethaneLevelCritical() [L858] 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] [L860] 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] [L778] int retValue_acc ; [L781] retValue_acc = pumpRunning [L782] 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] [L860] 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] [L860] tmp___0 = isPumpRunning() [L862] 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] [L864] 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] [L514] __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 38 procedures, 219 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1115 SDtfs, 442 SDslu, 1862 SDs, 0 SdLazy, 422 SolverSat, 103 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 589 GetRequests, 560 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=495occurred 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: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 674 NumberOfCodeBlocks, 674 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 582 ConstructedInterpolants, 0 QuantifiedInterpolants, 69191 SizeOfPredicates, 20 NumberOfNonLiveVariables, 6238 ConjunctsInSsa, 78 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...