/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:00:59,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:00:59,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:00:59,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:00:59,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:00:59,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:00:59,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:00:59,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:00:59,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:00:59,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:00:59,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:00:59,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:00:59,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:00:59,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:00:59,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:00:59,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:00:59,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:00:59,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:00:59,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:00:59,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:00:59,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:00:59,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:00:59,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:00:59,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:00:59,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 13:00:59,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 13:00:59,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 13:00:59,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 13:00:59,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 13:00:59,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 13:00:59,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:00:59,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:00:59,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:00:59,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:00:59,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:00:59,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:00:59,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:00:59,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:00:59,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:00:59,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:00:59,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:00:59,778 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 13:00:59,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:00:59,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:00:59,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:00:59,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:00:59,804 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:00:59,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:00:59,804 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:00:59,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:00:59,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:00:59,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:00:59,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:00:59,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:00:59,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:00:59,807 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:00:59,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:00:59,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:00:59,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:00:59,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:00:59,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:00:59,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:00:59,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:00:59,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:00:59,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:00:59,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:00:59,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:00:59,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:00:59,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:59,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:00:59,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:00:59,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 13:01:00,165 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:01:00,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:01:00,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:01:00,184 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:01:00,185 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:01:00,185 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-07-20 13:01:00,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a879e96/87a15462cd704fedb797955196481f95/FLAG5bdd70fe1 [2020-07-20 13:01:00,775 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:01:00,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-07-20 13:01:00,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a879e96/87a15462cd704fedb797955196481f95/FLAG5bdd70fe1 [2020-07-20 13:01:01,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a879e96/87a15462cd704fedb797955196481f95 [2020-07-20 13:01:01,106 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:01:01,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:01:01,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:01:01,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:01:01,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:01:01,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:01:01" (1/1) ... [2020-07-20 13:01:01,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b260048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01, skipping insertion in model container [2020-07-20 13:01:01,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:01:01" (1/1) ... [2020-07-20 13:01:01,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:01:01,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:01:01,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:01:01,727 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:01:01,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:01:01,858 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:01:01,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01 WrapperNode [2020-07-20 13:01:01,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:01:01,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:01:01,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:01:01,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:01:01,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (1/1) ... [2020-07-20 13:01:01,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (1/1) ... [2020-07-20 13:01:01,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (1/1) ... [2020-07-20 13:01:01,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (1/1) ... [2020-07-20 13:01:01,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (1/1) ... [2020-07-20 13:01:01,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (1/1) ... [2020-07-20 13:01:01,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (1/1) ... [2020-07-20 13:01:01,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:01:01,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:01:01,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:01:01,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:01:01,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (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 13:01:02,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:01:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:01:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 13:01:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 13:01:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 13:01:02,076 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 13:01:02,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 13:01:02,076 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 13:01:02,076 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 13:01:02,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 13:01:02,077 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-20 13:01:02,078 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 13:01:02,078 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 13:01:02,078 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 13:01:02,078 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 13:01:02,079 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 13:01:02,079 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 13:01:02,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 13:01:02,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 13:01:02,080 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 13:01:02,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 13:01:02,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-20 13:01:02,080 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-20 13:01:02,080 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-20 13:01:02,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 13:01:02,081 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 13:01:02,081 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 13:01:02,081 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 13:01:02,081 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 13:01:02,082 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 13:01:02,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:01:02,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-20 13:01:02,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 13:01:02,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 13:01:02,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 13:01:02,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 13:01:02,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 13:01:02,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 13:01:02,083 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 13:01:02,083 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 13:01:02,084 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 13:01:02,084 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 13:01:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:01:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 13:01:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 13:01:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 13:01:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 13:01:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 13:01:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 13:01:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 13:01:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 13:01:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 13:01:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-20 13:01:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:01:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 13:01:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 13:01:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 13:01:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 13:01:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 13:01:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-20 13:01:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-20 13:01:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-20 13:01:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 13:01:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 13:01:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 13:01:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 13:01:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-20 13:01:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 13:01:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 13:01:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 13:01:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 13:01:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 13:01:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 13:01:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 13:01:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 13:01:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 13:01:02,093 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 13:01:02,093 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:01:02,094 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 13:01:02,094 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 13:01:02,094 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 13:01:02,094 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 13:01:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 13:01:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 13:01:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:01:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 13:01:02,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 13:01:02,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:01:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 13:01:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 13:01:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:01:02,103 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 13:01:02,103 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 13:01:02,103 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 13:01:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 13:01:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:01:02,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 13:01:02,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:01:03,292 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:01:03,293 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 13:01:03,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:01:03 BoogieIcfgContainer [2020-07-20 13:01:03,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:01:03,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:01:03,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:01:03,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:01:03,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:01:01" (1/3) ... [2020-07-20 13:01:03,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d69aeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:01:03, skipping insertion in model container [2020-07-20 13:01:03,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:01:01" (2/3) ... [2020-07-20 13:01:03,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d69aeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:01:03, skipping insertion in model container [2020-07-20 13:01:03,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:01:03" (3/3) ... [2020-07-20 13:01:03,306 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2020-07-20 13:01:03,316 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:01:03,324 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:01:03,339 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:01:03,361 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:01:03,361 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:01:03,361 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:01:03,362 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:01:03,362 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:01:03,362 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:01:03,362 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:01:03,362 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:01:03,386 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2020-07-20 13:01:03,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 13:01:03,396 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:03,397 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 13:01:03,398 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:03,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:03,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1875422794, now seen corresponding path program 1 times [2020-07-20 13:01:03,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:03,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842715053] [2020-07-20 13:01:03,414 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 13:01:03,851 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:01:03,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:01:03,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:01:03,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:01:03,900 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 13:01:03,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:01:03,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842715053] [2020-07-20 13:01:03,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:01:03,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:01:03,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527815015] [2020-07-20 13:01:03,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:01:03,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:01:03,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:01:03,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:01:03,932 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 2 states. [2020-07-20 13:01:03,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:01:03,986 INFO L93 Difference]: Finished difference Result 276 states and 341 transitions. [2020-07-20 13:01:03,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:01:03,988 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 13:01:03,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:01:04,004 INFO L225 Difference]: With dead ends: 276 [2020-07-20 13:01:04,004 INFO L226 Difference]: Without dead ends: 138 [2020-07-20 13:01:04,010 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 13:01:04,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-20 13:01:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-07-20 13:01:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-07-20 13:01:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-07-20 13:01:04,084 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 46 [2020-07-20 13:01:04,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:01:04,085 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-07-20 13:01:04,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:01:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-07-20 13:01:04,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 13:01:04,090 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:04,090 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 13:01:04,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:04,304 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:04,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:04,305 INFO L82 PathProgramCache]: Analyzing trace with hash -2108875382, now seen corresponding path program 1 times [2020-07-20 13:01:04,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:04,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513182491] [2020-07-20 13:01:04,307 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 13:01:04,730 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:01:04,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:01:04,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 13:01:04,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:01:04,777 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 13:01:04,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:01:04,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513182491] [2020-07-20 13:01:04,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:01:04,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:01:04,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945135204] [2020-07-20 13:01:04,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:01:04,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:01:04,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:01:04,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:01:04,781 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 3 states. [2020-07-20 13:01:04,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:01:04,803 INFO L93 Difference]: Finished difference Result 215 states and 251 transitions. [2020-07-20 13:01:04,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:01:04,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 13:01:04,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:01:04,809 INFO L225 Difference]: With dead ends: 215 [2020-07-20 13:01:04,809 INFO L226 Difference]: Without dead ends: 129 [2020-07-20 13:01:04,810 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 13:01:04,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-07-20 13:01:04,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-07-20 13:01:04,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-07-20 13:01:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-07-20 13:01:04,824 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 47 [2020-07-20 13:01:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:01:04,824 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-07-20 13:01:04,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:01:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-07-20 13:01:04,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 13:01:04,827 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:04,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:01:05,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:05,043 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:05,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:05,044 INFO L82 PathProgramCache]: Analyzing trace with hash -2135499519, now seen corresponding path program 1 times [2020-07-20 13:01:05,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:05,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694160254] [2020-07-20 13:01:05,046 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 13:01:05,471 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:01:05,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:01:05,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 13:01:05,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:01:05,523 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 13:01:05,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:01:05,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694160254] [2020-07-20 13:01:05,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:01:05,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:01:05,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508119364] [2020-07-20 13:01:05,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:01:05,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:01:05,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:01:05,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:01:05,530 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 3 states. [2020-07-20 13:01:05,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:01:05,595 INFO L93 Difference]: Finished difference Result 335 states and 401 transitions. [2020-07-20 13:01:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:01:05,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-20 13:01:05,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:01:05,602 INFO L225 Difference]: With dead ends: 335 [2020-07-20 13:01:05,602 INFO L226 Difference]: Without dead ends: 230 [2020-07-20 13:01:05,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:01:05,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-07-20 13:01:05,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2020-07-20 13:01:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-07-20 13:01:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 267 transitions. [2020-07-20 13:01:05,642 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 267 transitions. Word has length 52 [2020-07-20 13:01:05,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:01:05,642 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 267 transitions. [2020-07-20 13:01:05,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:01:05,643 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 267 transitions. [2020-07-20 13:01:05,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 13:01:05,646 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:05,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:01:05,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:05,860 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:05,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:05,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1973278076, now seen corresponding path program 1 times [2020-07-20 13:01:05,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:05,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590768741] [2020-07-20 13:01:05,862 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 13:01:06,325 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:01:06,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:01:06,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 13:01:06,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:01:06,390 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 13:01:06,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:01:06,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590768741] [2020-07-20 13:01:06,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:01:06,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:01:06,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773661204] [2020-07-20 13:01:06,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:01:06,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:01:06,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:01:06,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:01:06,394 INFO L87 Difference]: Start difference. First operand 224 states and 267 transitions. Second operand 6 states. [2020-07-20 13:01:06,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:01:06,634 INFO L93 Difference]: Finished difference Result 613 states and 749 transitions. [2020-07-20 13:01:06,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 13:01:06,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-20 13:01:06,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:01:06,638 INFO L225 Difference]: With dead ends: 613 [2020-07-20 13:01:06,639 INFO L226 Difference]: Without dead ends: 413 [2020-07-20 13:01:06,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 13:01:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-07-20 13:01:06,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 409. [2020-07-20 13:01:06,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-07-20 13:01:06,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 492 transitions. [2020-07-20 13:01:06,685 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 492 transitions. Word has length 57 [2020-07-20 13:01:06,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:01:06,687 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 492 transitions. [2020-07-20 13:01:06,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:01:06,687 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 492 transitions. [2020-07-20 13:01:06,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-20 13:01:06,696 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:06,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:01:06,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:06,913 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:06,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:06,913 INFO L82 PathProgramCache]: Analyzing trace with hash -820899264, now seen corresponding path program 1 times [2020-07-20 13:01:06,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:06,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299547384] [2020-07-20 13:01:06,915 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 13:01:07,338 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:01:07,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:01:07,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 13:01:07,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:01:07,384 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 13:01:07,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:01:07,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299547384] [2020-07-20 13:01:07,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:01:07,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:01:07,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014439127] [2020-07-20 13:01:07,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:01:07,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:01:07,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:01:07,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:01:07,387 INFO L87 Difference]: Start difference. First operand 409 states and 492 transitions. Second operand 6 states. [2020-07-20 13:01:07,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:01:07,679 INFO L93 Difference]: Finished difference Result 1002 states and 1258 transitions. [2020-07-20 13:01:07,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 13:01:07,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-07-20 13:01:07,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:01:07,685 INFO L225 Difference]: With dead ends: 1002 [2020-07-20 13:01:07,685 INFO L226 Difference]: Without dead ends: 617 [2020-07-20 13:01:07,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 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 13:01:07,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-07-20 13:01:07,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 605. [2020-07-20 13:01:07,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-07-20 13:01:07,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 734 transitions. [2020-07-20 13:01:07,746 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 734 transitions. Word has length 61 [2020-07-20 13:01:07,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:01:07,746 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 734 transitions. [2020-07-20 13:01:07,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:01:07,746 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 734 transitions. [2020-07-20 13:01:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-20 13:01:07,749 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:07,749 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] [2020-07-20 13:01:07,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:07,963 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:07,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:07,964 INFO L82 PathProgramCache]: Analyzing trace with hash 16386475, now seen corresponding path program 1 times [2020-07-20 13:01:07,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:07,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529776968] [2020-07-20 13:01:07,965 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 13:01:08,279 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:01:08,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:01:08,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 13:01:08,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:01:08,327 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 13:01:08,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:01:08,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529776968] [2020-07-20 13:01:08,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:01:08,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:01:08,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385991472] [2020-07-20 13:01:08,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:01:08,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:01:08,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:01:08,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:01:08,329 INFO L87 Difference]: Start difference. First operand 605 states and 734 transitions. Second operand 6 states. [2020-07-20 13:01:08,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:01:08,383 INFO L93 Difference]: Finished difference Result 1206 states and 1492 transitions. [2020-07-20 13:01:08,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:01:08,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-07-20 13:01:08,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:01:08,389 INFO L225 Difference]: With dead ends: 1206 [2020-07-20 13:01:08,389 INFO L226 Difference]: Without dead ends: 625 [2020-07-20 13:01:08,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 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 13:01:08,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2020-07-20 13:01:08,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 625. [2020-07-20 13:01:08,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-07-20 13:01:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 754 transitions. [2020-07-20 13:01:08,468 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 754 transitions. Word has length 84 [2020-07-20 13:01:08,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:01:08,469 INFO L479 AbstractCegarLoop]: Abstraction has 625 states and 754 transitions. [2020-07-20 13:01:08,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:01:08,469 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 754 transitions. [2020-07-20 13:01:08,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-20 13:01:08,471 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:08,472 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] [2020-07-20 13:01:08,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:08,685 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:08,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:08,685 INFO L82 PathProgramCache]: Analyzing trace with hash 39018729, now seen corresponding path program 1 times [2020-07-20 13:01:08,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:08,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073109660] [2020-07-20 13:01:08,686 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 13:01:08,966 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:01:08,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:01:08,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 13:01:08,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:01:09,004 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 13:01:09,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:01:09,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073109660] [2020-07-20 13:01:09,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:01:09,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:01:09,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227610124] [2020-07-20 13:01:09,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:01:09,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:01:09,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:01:09,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:01:09,006 INFO L87 Difference]: Start difference. First operand 625 states and 754 transitions. Second operand 5 states. [2020-07-20 13:01:09,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:01:09,048 INFO L93 Difference]: Finished difference Result 1254 states and 1568 transitions. [2020-07-20 13:01:09,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 13:01:09,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-07-20 13:01:09,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:01:09,053 INFO L225 Difference]: With dead ends: 1254 [2020-07-20 13:01:09,053 INFO L226 Difference]: Without dead ends: 653 [2020-07-20 13:01:09,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 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 13:01:09,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-07-20 13:01:09,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 641. [2020-07-20 13:01:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-07-20 13:01:09,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 770 transitions. [2020-07-20 13:01:09,092 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 770 transitions. Word has length 84 [2020-07-20 13:01:09,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:01:09,092 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 770 transitions. [2020-07-20 13:01:09,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:01:09,093 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 770 transitions. [2020-07-20 13:01:09,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-20 13:01:09,095 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:09,095 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] [2020-07-20 13:01:09,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:09,310 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:09,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:09,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1064510728, now seen corresponding path program 1 times [2020-07-20 13:01:09,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:09,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311092875] [2020-07-20 13:01:09,312 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 13:01:09,572 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:01:09,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:01:09,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 13:01:09,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:01:09,628 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 13:01:09,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:01:09,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311092875] [2020-07-20 13:01:09,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:01:09,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:01:09,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532211793] [2020-07-20 13:01:09,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:01:09,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:01:09,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:01:09,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:01:09,631 INFO L87 Difference]: Start difference. First operand 641 states and 770 transitions. Second operand 3 states. [2020-07-20 13:01:09,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:01:09,702 INFO L93 Difference]: Finished difference Result 1791 states and 2282 transitions. [2020-07-20 13:01:09,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:01:09,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-07-20 13:01:09,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:01:09,711 INFO L225 Difference]: With dead ends: 1791 [2020-07-20 13:01:09,711 INFO L226 Difference]: Without dead ends: 1174 [2020-07-20 13:01:09,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 81 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 13:01:09,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2020-07-20 13:01:09,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1171. [2020-07-20 13:01:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2020-07-20 13:01:09,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1446 transitions. [2020-07-20 13:01:09,779 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1446 transitions. Word has length 84 [2020-07-20 13:01:09,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:01:09,779 INFO L479 AbstractCegarLoop]: Abstraction has 1171 states and 1446 transitions. [2020-07-20 13:01:09,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:01:09,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1446 transitions. [2020-07-20 13:01:09,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-20 13:01:09,783 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:01:09,783 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 13:01:09,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:09,998 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:01:09,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:01:09,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1546821858, now seen corresponding path program 1 times [2020-07-20 13:01:09,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:01:10,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849400908] [2020-07-20 13:01:10,000 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 13:01:10,367 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:01:10,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:01:10,368 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:01:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:01:10,442 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:01:10,745 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:01:10,745 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:01:10,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:01:11,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:01:11 BoogieIcfgContainer [2020-07-20 13:01:11,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:01:11,132 INFO L168 Benchmark]: Toolchain (without parser) took 10022.61 ms. Allocated memory was 147.3 MB in the beginning and 308.3 MB in the end (delta: 161.0 MB). Free memory was 104.2 MB in the beginning and 121.0 MB in the end (delta: -16.9 MB). Peak memory consumption was 144.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:01:11,132 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 147.3 MB. Free memory was 123.5 MB in the beginning and 123.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 13:01:11,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 746.82 ms. Allocated memory was 147.3 MB in the beginning and 202.4 MB in the end (delta: 55.1 MB). Free memory was 103.8 MB in the beginning and 170.1 MB in the end (delta: -66.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:01:11,134 INFO L168 Benchmark]: Boogie Preprocessor took 124.44 ms. Allocated memory is still 202.4 MB. Free memory was 170.1 MB in the beginning and 165.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-07-20 13:01:11,135 INFO L168 Benchmark]: RCFGBuilder took 1312.46 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 165.5 MB in the beginning and 188.3 MB in the end (delta: -22.9 MB). Peak memory consumption was 78.9 MB. Max. memory is 7.1 GB. [2020-07-20 13:01:11,136 INFO L168 Benchmark]: TraceAbstraction took 7830.11 ms. Allocated memory was 234.4 MB in the beginning and 308.3 MB in the end (delta: 73.9 MB). Free memory was 188.3 MB in the beginning and 121.0 MB in the end (delta: 67.3 MB). Peak memory consumption was 141.2 MB. Max. memory is 7.1 GB. [2020-07-20 13:01:11,140 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 147.3 MB. Free memory was 123.5 MB in the beginning and 123.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 746.82 ms. Allocated memory was 147.3 MB in the beginning and 202.4 MB in the end (delta: 55.1 MB). Free memory was 103.8 MB in the beginning and 170.1 MB in the end (delta: -66.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.44 ms. Allocated memory is still 202.4 MB. Free memory was 170.1 MB in the beginning and 165.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1312.46 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 165.5 MB in the beginning and 188.3 MB in the end (delta: -22.9 MB). Peak memory consumption was 78.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7830.11 ms. Allocated memory was 234.4 MB in the beginning and 308.3 MB in the end (delta: 73.9 MB). Free memory was 188.3 MB in the beginning and 121.0 MB in the end (delta: 67.3 MB). Peak memory consumption was 141.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 383]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L158] int pumpRunning = 0; [L159] int systemActive = 1; [L458] int cleanupTimeShifts = 4; [L752] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=53, \old(head)=51, \old(head)=88, \old(methaneLevelCritical)=38, \old(pumpRunning)=42, \old(systemActive)=28, \old(waterLevel)=59, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L534] int retValue_acc ; [L535] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L539] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L540] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L541] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L975] int retValue_acc ; [L978] retValue_acc = 1 [L979] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L541] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L541] tmp = valid_product() [L543] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L545] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L546] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L525] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L390] int splverifierCounter ; [L391] int tmp ; [L392] int tmp___0 ; [L393] int tmp___1 ; [L394] int tmp___2 ; [L397] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L399] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L401] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L407] tmp = __VERIFIER_nondet_int() [L409] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L411] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L411] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L417] tmp___0 = __VERIFIER_nondet_int() [L419] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L421] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L78] COND FALSE !(\read(methaneLevelCritical)) [L81] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L421] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L427] tmp___2 = __VERIFIER_nondet_int() [L429] COND FALSE !(\read(tmp___2)) [L435] tmp___1 = __VERIFIER_nondet_int() [L437] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L446] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L166] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L173] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L175] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L221] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L224] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L239] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L195] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L198] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L200] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L318] int retValue_acc ; [L319] int tmp ; [L320] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L324] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L128] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L131] COND FALSE !(waterLevel < 2) [L135] retValue_acc = 0 [L136] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L324] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L324] tmp = isHighWaterSensorDry() [L326] COND FALSE !(\read(tmp)) [L329] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L331] retValue_acc = tmp___0 [L332] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L200] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L200] tmp = isHighWaterLevel() [L202] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L204] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L249] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L204] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L239] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L175] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L181] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L558] int tmp ; [L559] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L563] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L563] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L563] tmp = isMethaneLevelCritical() [L565] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L567] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L273] int retValue_acc ; [L276] retValue_acc = pumpRunning [L277] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L567] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L567] tmp___0 = isPumpRunning() [L569] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L571] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L383] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1313 SDtfs, 423 SDslu, 2402 SDs, 0 SdLazy, 197 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 512 GetRequests, 488 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1171occurred in iteration=8, 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, 8 MinimizatonAttempts, 37 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 603 NumberOfCodeBlocks, 561 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 507 ConstructedInterpolants, 0 QuantifiedInterpolants, 55417 SizeOfPredicates, 20 NumberOfNonLiveVariables, 5454 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...