/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 16:22:30,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 16:22:30,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 16:22:30,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 16:22:30,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 16:22:30,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 16:22:30,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 16:22:30,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 16:22:30,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 16:22:30,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 16:22:30,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 16:22:30,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 16:22:30,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 16:22:30,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 16:22:30,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 16:22:30,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 16:22:30,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 16:22:30,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 16:22:30,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 16:22:30,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 16:22:30,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 16:22:30,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 16:22:30,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 16:22:30,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 16:22:30,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 16:22:30,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 16:22:30,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 16:22:30,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 16:22:30,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 16:22:30,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 16:22:30,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 16:22:30,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 16:22:30,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 16:22:30,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 16:22:30,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 16:22:30,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 16:22:30,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 16:22:30,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 16:22:30,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 16:22:30,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 16:22:30,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 16:22:30,636 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 16:22:30,650 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 16:22:30,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 16:22:30,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 16:22:30,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 16:22:30,652 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 16:22:30,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 16:22:30,652 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 16:22:30,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 16:22:30,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 16:22:30,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 16:22:30,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 16:22:30,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 16:22:30,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 16:22:30,654 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 16:22:30,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 16:22:30,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 16:22:30,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 16:22:30,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 16:22:30,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 16:22:30,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 16:22:30,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 16:22:30,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:22:30,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 16:22:30,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 16:22:30,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 16:22:30,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 16:22:30,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:30,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 16:22:30,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 16:22:30,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 16:22:30,936 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 16:22:30,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 16:22:30,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 16:22:30,954 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 16:22:30,955 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 16:22:30,955 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-07-20 16:22:31,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f216ac410/ae3be24a1a214f4ba6e7dc6c2e9c1074/FLAGfd4a301d1 [2020-07-20 16:22:31,572 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 16:22:31,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-07-20 16:22:31,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f216ac410/ae3be24a1a214f4ba6e7dc6c2e9c1074/FLAGfd4a301d1 [2020-07-20 16:22:31,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f216ac410/ae3be24a1a214f4ba6e7dc6c2e9c1074 [2020-07-20 16:22:31,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 16:22:31,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 16:22:31,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 16:22:31,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 16:22:31,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 16:22:31,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:22:31" (1/1) ... [2020-07-20 16:22:31,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33761369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:31, skipping insertion in model container [2020-07-20 16:22:31,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:22:31" (1/1) ... [2020-07-20 16:22:31,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 16:22:31,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 16:22:32,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:22:32,286 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 16:22:32,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:22:32,558 INFO L208 MainTranslator]: Completed translation [2020-07-20 16:22:32,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:32 WrapperNode [2020-07-20 16:22:32,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 16:22:32,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 16:22:32,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 16:22:32,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 16:22:32,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:32" (1/1) ... [2020-07-20 16:22:32,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:32" (1/1) ... [2020-07-20 16:22:32,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:32" (1/1) ... [2020-07-20 16:22:32,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:32" (1/1) ... [2020-07-20 16:22:32,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:32" (1/1) ... [2020-07-20 16:22:32,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:32" (1/1) ... [2020-07-20 16:22:32,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:32" (1/1) ... [2020-07-20 16:22:32,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 16:22:32,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 16:22:32,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 16:22:32,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 16:22:32,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:22:32,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 16:22:32,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 16:22:32,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 16:22:32,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-20 16:22:32,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 16:22:32,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 16:22:32,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 16:22:32,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 16:22:32,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 16:22:32,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 16:22:32,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 16:22:32,766 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 16:22:32,766 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 16:22:32,766 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 16:22:32,766 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 16:22:32,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 16:22:32,767 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 16:22:32,767 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 16:22:32,767 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 16:22:32,767 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-20 16:22:32,767 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 16:22:32,768 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 16:22:32,768 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 16:22:32,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 16:22:32,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 16:22:32,768 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 16:22:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 16:22:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-20 16:22:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 16:22:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 16:22:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 16:22:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 16:22:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 16:22:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 16:22:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 16:22:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 16:22:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 16:22:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 16:22:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 16:22:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 16:22:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-20 16:22:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 16:22:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 16:22:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 16:22:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 16:22:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 16:22:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 16:22:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-20 16:22:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 16:22:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 16:22:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 16:22:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 16:22:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 16:22:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 16:22:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 16:22:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 16:22:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 16:22:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 16:22:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 16:22:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 16:22:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 16:22:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 16:22:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 16:22:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 16:22:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 16:22:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 16:22:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 16:22:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 16:22:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 16:22:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 16:22:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 16:22:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 16:22:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 16:22:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 16:22:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 16:22:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 16:22:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 16:22:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 16:22:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 16:22:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 16:22:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 16:22:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-20 16:22:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 16:22:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 16:22:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 16:22:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 16:22:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 16:22:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 16:22:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-20 16:22:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-20 16:22:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 16:22:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 16:22:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 16:22:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 16:22:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 16:22:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 16:22:34,107 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 16:22:34,108 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 16:22:34,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:22:34 BoogieIcfgContainer [2020-07-20 16:22:34,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 16:22:34,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 16:22:34,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 16:22:34,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 16:22:34,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:22:31" (1/3) ... [2020-07-20 16:22:34,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ed0244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:22:34, skipping insertion in model container [2020-07-20 16:22:34,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:32" (2/3) ... [2020-07-20 16:22:34,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ed0244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:22:34, skipping insertion in model container [2020-07-20 16:22:34,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:22:34" (3/3) ... [2020-07-20 16:22:34,122 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2020-07-20 16:22:34,133 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 16:22:34,141 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 16:22:34,156 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 16:22:34,182 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 16:22:34,182 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 16:22:34,182 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 16:22:34,182 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 16:22:34,183 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 16:22:34,183 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 16:22:34,183 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 16:22:34,183 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 16:22:34,207 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-07-20 16:22:34,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 16:22:34,217 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:34,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:34,218 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:34,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:34,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1737906003, now seen corresponding path program 1 times [2020-07-20 16:22:34,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:34,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412335070] [2020-07-20 16:22:34,235 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:34,722 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:34,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:34,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 16:22:34,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:34,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:34,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:34,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412335070] [2020-07-20 16:22:34,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:34,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 16:22:34,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775751608] [2020-07-20 16:22:34,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 16:22:34,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:34,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 16:22:34,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:22:34,796 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 2 states. [2020-07-20 16:22:34,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:34,841 INFO L93 Difference]: Finished difference Result 286 states and 357 transitions. [2020-07-20 16:22:34,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 16:22:34,843 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 16:22:34,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:34,858 INFO L225 Difference]: With dead ends: 286 [2020-07-20 16:22:34,858 INFO L226 Difference]: Without dead ends: 143 [2020-07-20 16:22:34,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:22:34,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-07-20 16:22:34,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-07-20 16:22:34,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-07-20 16:22:34,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2020-07-20 16:22:34,929 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 46 [2020-07-20 16:22:34,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:34,929 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2020-07-20 16:22:34,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 16:22:34,930 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2020-07-20 16:22:34,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 16:22:34,938 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:34,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:35,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:35,154 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:35,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:35,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1744597296, now seen corresponding path program 1 times [2020-07-20 16:22:35,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:35,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642488773] [2020-07-20 16:22:35,155 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:35,559 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:35,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:35,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 16:22:35,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:35,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:35,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642488773] [2020-07-20 16:22:35,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:35,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:35,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223188056] [2020-07-20 16:22:35,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:35,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:35,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:35,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:35,617 INFO L87 Difference]: Start difference. First operand 143 states and 170 transitions. Second operand 3 states. [2020-07-20 16:22:35,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:35,657 INFO L93 Difference]: Finished difference Result 235 states and 279 transitions. [2020-07-20 16:22:35,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:35,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 16:22:35,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:35,665 INFO L225 Difference]: With dead ends: 235 [2020-07-20 16:22:35,665 INFO L226 Difference]: Without dead ends: 134 [2020-07-20 16:22:35,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:35,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-07-20 16:22:35,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-07-20 16:22:35,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-07-20 16:22:35,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-07-20 16:22:35,685 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 47 [2020-07-20 16:22:35,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:35,685 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-07-20 16:22:35,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:35,686 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-07-20 16:22:35,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 16:22:35,688 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:35,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:35,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:35,902 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:35,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:35,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1316795497, now seen corresponding path program 1 times [2020-07-20 16:22:35,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:35,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443200781] [2020-07-20 16:22:35,905 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:36,338 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:36,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:36,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 16:22:36,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:36,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:36,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443200781] [2020-07-20 16:22:36,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:36,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:36,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967706334] [2020-07-20 16:22:36,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:36,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:36,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:36,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:36,367 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 3 states. [2020-07-20 16:22:36,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:36,389 INFO L93 Difference]: Finished difference Result 244 states and 293 transitions. [2020-07-20 16:22:36,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:36,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-20 16:22:36,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:36,392 INFO L225 Difference]: With dead ends: 244 [2020-07-20 16:22:36,392 INFO L226 Difference]: Without dead ends: 134 [2020-07-20 16:22:36,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:36,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-07-20 16:22:36,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-07-20 16:22:36,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-07-20 16:22:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions. [2020-07-20 16:22:36,409 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 51 [2020-07-20 16:22:36,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:36,410 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 157 transitions. [2020-07-20 16:22:36,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:36,410 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions. [2020-07-20 16:22:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-20 16:22:36,413 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:36,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:36,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:36,627 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:36,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:36,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1654731465, now seen corresponding path program 1 times [2020-07-20 16:22:36,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:36,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804314908] [2020-07-20 16:22:36,629 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:36,971 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:36,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:36,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 16:22:36,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:37,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:37,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804314908] [2020-07-20 16:22:37,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:37,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:37,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750055628] [2020-07-20 16:22:37,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:37,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:37,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:37,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:37,025 INFO L87 Difference]: Start difference. First operand 134 states and 157 transitions. Second operand 6 states. [2020-07-20 16:22:37,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:37,844 INFO L93 Difference]: Finished difference Result 328 states and 401 transitions. [2020-07-20 16:22:37,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:22:37,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-07-20 16:22:37,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:37,848 INFO L225 Difference]: With dead ends: 328 [2020-07-20 16:22:37,849 INFO L226 Difference]: Without dead ends: 218 [2020-07-20 16:22:37,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 16:22:37,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-07-20 16:22:37,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 203. [2020-07-20 16:22:37,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-20 16:22:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 229 transitions. [2020-07-20 16:22:37,877 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 229 transitions. Word has length 69 [2020-07-20 16:22:37,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:37,877 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 229 transitions. [2020-07-20 16:22:37,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:37,878 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 229 transitions. [2020-07-20 16:22:37,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-20 16:22:37,880 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:37,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:38,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:38,095 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:38,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:38,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1727174811, now seen corresponding path program 1 times [2020-07-20 16:22:38,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:38,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86322019] [2020-07-20 16:22:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:38,528 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:38,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:38,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 16:22:38,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:38,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:38,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:38,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86322019] [2020-07-20 16:22:38,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:38,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:38,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375539527] [2020-07-20 16:22:38,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:38,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:38,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:38,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:38,588 INFO L87 Difference]: Start difference. First operand 203 states and 229 transitions. Second operand 6 states. [2020-07-20 16:22:38,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:38,788 INFO L93 Difference]: Finished difference Result 550 states and 641 transitions. [2020-07-20 16:22:38,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:22:38,789 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-07-20 16:22:38,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:38,799 INFO L225 Difference]: With dead ends: 550 [2020-07-20 16:22:38,800 INFO L226 Difference]: Without dead ends: 371 [2020-07-20 16:22:38,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:22:38,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-07-20 16:22:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2020-07-20 16:22:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-07-20 16:22:38,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 416 transitions. [2020-07-20 16:22:38,875 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 416 transitions. Word has length 83 [2020-07-20 16:22:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:38,876 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 416 transitions. [2020-07-20 16:22:38,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 416 transitions. [2020-07-20 16:22:38,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-20 16:22:38,881 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:38,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:39,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:39,095 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:39,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:39,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1108418135, now seen corresponding path program 1 times [2020-07-20 16:22:39,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:39,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389267958] [2020-07-20 16:22:39,098 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:39,451 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:39,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:39,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:22:39,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:39,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:39,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:39,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389267958] [2020-07-20 16:22:39,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:39,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:39,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698700156] [2020-07-20 16:22:39,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:39,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:39,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:39,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:39,504 INFO L87 Difference]: Start difference. First operand 367 states and 416 transitions. Second operand 6 states. [2020-07-20 16:22:39,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:39,752 INFO L93 Difference]: Finished difference Result 374 states and 424 transitions. [2020-07-20 16:22:39,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:22:39,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-07-20 16:22:39,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:39,760 INFO L225 Difference]: With dead ends: 374 [2020-07-20 16:22:39,760 INFO L226 Difference]: Without dead ends: 371 [2020-07-20 16:22:39,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:22:39,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-07-20 16:22:39,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2020-07-20 16:22:39,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-07-20 16:22:39,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 415 transitions. [2020-07-20 16:22:39,829 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 415 transitions. Word has length 87 [2020-07-20 16:22:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:39,830 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 415 transitions. [2020-07-20 16:22:39,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:39,831 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 415 transitions. [2020-07-20 16:22:39,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-20 16:22:39,832 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:39,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:40,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:40,046 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:40,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:40,047 INFO L82 PathProgramCache]: Analyzing trace with hash 661895326, now seen corresponding path program 1 times [2020-07-20 16:22:40,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:40,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62224417] [2020-07-20 16:22:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:40,365 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:40,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:40,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:22:40,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:40,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:40,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62224417] [2020-07-20 16:22:40,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:40,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:40,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289618771] [2020-07-20 16:22:40,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:40,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:40,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:40,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:40,412 INFO L87 Difference]: Start difference. First operand 367 states and 415 transitions. Second operand 6 states. [2020-07-20 16:22:40,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:40,465 INFO L93 Difference]: Finished difference Result 720 states and 826 transitions. [2020-07-20 16:22:40,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 16:22:40,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-07-20 16:22:40,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:40,469 INFO L225 Difference]: With dead ends: 720 [2020-07-20 16:22:40,469 INFO L226 Difference]: Without dead ends: 377 [2020-07-20 16:22:40,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 16:22:40,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-07-20 16:22:40,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2020-07-20 16:22:40,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-07-20 16:22:40,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 425 transitions. [2020-07-20 16:22:40,494 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 425 transitions. Word has length 88 [2020-07-20 16:22:40,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:40,494 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 425 transitions. [2020-07-20 16:22:40,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:40,494 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 425 transitions. [2020-07-20 16:22:40,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-20 16:22:40,496 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:40,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:40,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:40,711 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:40,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:40,712 INFO L82 PathProgramCache]: Analyzing trace with hash 936654940, now seen corresponding path program 1 times [2020-07-20 16:22:40,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:40,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158847619] [2020-07-20 16:22:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:40,877 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 16:22:40,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:40,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 16:22:40,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:40,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:40,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158847619] [2020-07-20 16:22:40,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:40,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 16:22:40,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860840986] [2020-07-20 16:22:40,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 16:22:40,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:40,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 16:22:40,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:40,912 INFO L87 Difference]: Start difference. First operand 377 states and 425 transitions. Second operand 5 states. [2020-07-20 16:22:40,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:40,939 INFO L93 Difference]: Finished difference Result 744 states and 860 transitions. [2020-07-20 16:22:40,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 16:22:40,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-07-20 16:22:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:40,943 INFO L225 Difference]: With dead ends: 744 [2020-07-20 16:22:40,943 INFO L226 Difference]: Without dead ends: 391 [2020-07-20 16:22:40,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:40,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-07-20 16:22:40,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 385. [2020-07-20 16:22:40,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-07-20 16:22:40,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 433 transitions. [2020-07-20 16:22:40,987 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 433 transitions. Word has length 88 [2020-07-20 16:22:40,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:40,987 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 433 transitions. [2020-07-20 16:22:40,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 16:22:40,988 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 433 transitions. [2020-07-20 16:22:40,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-20 16:22:40,989 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:40,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:41,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:41,204 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:41,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:41,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1408012101, now seen corresponding path program 1 times [2020-07-20 16:22:41,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:41,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430604846] [2020-07-20 16:22:41,206 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:41,493 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:41,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:41,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 16:22:41,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:41,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:41,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430604846] [2020-07-20 16:22:41,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:41,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:41,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039722374] [2020-07-20 16:22:41,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:41,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:41,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:41,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:41,531 INFO L87 Difference]: Start difference. First operand 385 states and 433 transitions. Second operand 3 states. [2020-07-20 16:22:41,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:41,581 INFO L93 Difference]: Finished difference Result 1047 states and 1233 transitions. [2020-07-20 16:22:41,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:41,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-07-20 16:22:41,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:41,586 INFO L225 Difference]: With dead ends: 1047 [2020-07-20 16:22:41,586 INFO L226 Difference]: Without dead ends: 686 [2020-07-20 16:22:41,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:41,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-07-20 16:22:41,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 683. [2020-07-20 16:22:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2020-07-20 16:22:41,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 790 transitions. [2020-07-20 16:22:41,627 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 790 transitions. Word has length 88 [2020-07-20 16:22:41,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:41,627 INFO L479 AbstractCegarLoop]: Abstraction has 683 states and 790 transitions. [2020-07-20 16:22:41,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:41,628 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 790 transitions. [2020-07-20 16:22:41,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-07-20 16:22:41,630 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:41,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:41,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:41,843 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:41,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:41,844 INFO L82 PathProgramCache]: Analyzing trace with hash 350479285, now seen corresponding path program 1 times [2020-07-20 16:22:41,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:41,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210814836] [2020-07-20 16:22:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:42,203 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:42,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 16:22:42,204 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:22:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 16:22:42,294 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:22:42,607 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 16:22:42,608 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 16:22:42,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:43,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:22:43 BoogieIcfgContainer [2020-07-20 16:22:43,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 16:22:43,017 INFO L168 Benchmark]: Toolchain (without parser) took 11152.37 ms. Allocated memory was 137.9 MB in the beginning and 322.4 MB in the end (delta: 184.5 MB). Free memory was 100.4 MB in the beginning and 290.1 MB in the end (delta: -189.7 MB). Peak memory consumption was 197.5 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:43,018 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 16:22:43,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.81 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 100.0 MB in the beginning and 172.5 MB in the end (delta: -72.5 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:43,020 INFO L168 Benchmark]: Boogie Preprocessor took 116.25 ms. Allocated memory is still 203.4 MB. Free memory was 172.5 MB in the beginning and 168.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:43,026 INFO L168 Benchmark]: RCFGBuilder took 1436.99 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 168.4 MB in the beginning and 196.1 MB in the end (delta: -27.7 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:43,027 INFO L168 Benchmark]: TraceAbstraction took 8900.01 ms. Allocated memory was 235.4 MB in the beginning and 322.4 MB in the end (delta: 87.0 MB). Free memory was 196.1 MB in the beginning and 290.1 MB in the end (delta: -94.1 MB). Peak memory consumption was 195.6 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:43,033 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.81 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 100.0 MB in the beginning and 172.5 MB in the end (delta: -72.5 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.25 ms. Allocated memory is still 203.4 MB. Free memory was 172.5 MB in the beginning and 168.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1436.99 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 168.4 MB in the beginning and 196.1 MB in the end (delta: -27.7 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8900.01 ms. Allocated memory was 235.4 MB in the beginning and 322.4 MB in the end (delta: 87.0 MB). Free memory was 196.1 MB in the beginning and 290.1 MB in the end (delta: -94.1 MB). Peak memory consumption was 195.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 73]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L554] int pumpRunning = 0; [L555] int systemActive = 1; [L878] int waterLevel = 1; [L879] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=38, \old(head)=83, \old(head)=47, \old(methaneLevelCritical)=56, \old(pumpRunning)=54, \old(systemActive)=92, \old(waterLevel)=87, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L525] int retValue_acc ; [L526] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L530] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L531] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L532] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L868] int retValue_acc ; [L871] retValue_acc = 1 [L872] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L532] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L532] tmp = valid_product() [L534] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L536] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L537] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L516] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L778] int splverifierCounter ; [L779] int tmp ; [L780] int tmp___0 ; [L781] int tmp___1 ; [L782] int tmp___2 ; [L785] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L787] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L789] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L795] tmp = __VERIFIER_nondet_int() [L797] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L799] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L896] COND TRUE waterLevel < 2 [L897] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L799] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L805] tmp___0 = __VERIFIER_nondet_int() [L807] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L809] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L908] COND FALSE !(\read(methaneLevelCritical)) [L911] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L809] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L815] tmp___2 = __VERIFIER_nondet_int() [L817] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, tmp___2=1, waterLevel=2] [L830] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L561] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L568] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L570] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L642] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L645] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L660] CALL processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L616] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L619] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L634] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L590] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L593] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L595] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L745] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L958] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L961] COND FALSE !(waterLevel < 2) [L965] retValue_acc = 0 [L966] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L745] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L752] retValue_acc = tmp___0 [L753] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \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] [L595] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L595] tmp = isHighWaterLevel() [L597] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L599] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L670] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L599] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L634] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L660] RET processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L570] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L576] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L44] int tmp ; [L45] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L49] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L49] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L53] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L53] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L57] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L73] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1519 SDtfs, 629 SDslu, 2533 SDs, 0 SdLazy, 532 SolverSat, 126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 645 GetRequests, 616 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=683occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 32 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 739 NumberOfCodeBlocks, 615 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 638 ConstructedInterpolants, 0 QuantifiedInterpolants, 83940 SizeOfPredicates, 17 NumberOfNonLiveVariables, 5962 ConjunctsInSsa, 72 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...