/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:40:38,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:40:38,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:40:38,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:40:38,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:40:38,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:40:38,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:40:38,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:40:38,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:40:38,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:40:38,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:40:38,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:40:38,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:40:38,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:40:38,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:40:38,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:40:38,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:40:38,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:40:38,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:40:38,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:40:38,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:40:38,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:40:38,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:40:38,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:40:38,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 10:40:38,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 10:40:38,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 10:40:38,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 10:40:38,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 10:40:38,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 10:40:38,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 10:40:38,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 10:40:38,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 10:40:38,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 10:40:38,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 10:40:38,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 10:40:38,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 10:40:38,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 10:40:38,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:40:38,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:40:38,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:40:38,958 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 10:40:38,993 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:40:38,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:40:38,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:40:39,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:40:39,000 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:40:39,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:40:39,000 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:40:39,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:40:39,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:40:39,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:40:39,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:40:39,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:40:39,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:40:39,002 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:40:39,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:40:39,002 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:40:39,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:40:39,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:40:39,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:40:39,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:40:39,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:40:39,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:40:39,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:40:39,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:40:39,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:40:39,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:40:39,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:39,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:40:39,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:40:39,006 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 -> NOT_INCREMENTALLY [2020-07-20 10:40:39,329 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:40:39,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:40:39,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:40:39,347 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:40:39,348 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:40:39,349 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-07-20 10:40:39,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e218c2537/beb2b23a458a4757a1c063671bd94c81/FLAGef86539ff [2020-07-20 10:40:39,912 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:40:39,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-07-20 10:40:39,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e218c2537/beb2b23a458a4757a1c063671bd94c81/FLAGef86539ff [2020-07-20 10:40:40,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e218c2537/beb2b23a458a4757a1c063671bd94c81 [2020-07-20 10:40:40,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:40:40,240 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:40:40,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:40:40,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:40:40,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:40:40,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:40:40" (1/1) ... [2020-07-20 10:40:40,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@acd029a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:40, skipping insertion in model container [2020-07-20 10:40:40,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:40:40" (1/1) ... [2020-07-20 10:40:40,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:40:40,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:40:40,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:40:40,785 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:40:40,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:40:40,902 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:40:40,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:40 WrapperNode [2020-07-20 10:40:40,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:40:40,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:40:40,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:40:40,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:40:40,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:40" (1/1) ... [2020-07-20 10:40:40,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:40" (1/1) ... [2020-07-20 10:40:40,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:40" (1/1) ... [2020-07-20 10:40:40,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:40" (1/1) ... [2020-07-20 10:40:40,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:40" (1/1) ... [2020-07-20 10:40:40,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:40" (1/1) ... [2020-07-20 10:40:40,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:40" (1/1) ... [2020-07-20 10:40:40,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:40:40,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:40:40,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:40:40,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:40:40,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:40" (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 10:40:41,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:40:41,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:40:41,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 10:40:41,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-20 10:40:41,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 10:40:41,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 10:40:41,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 10:40:41,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 10:40:41,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 10:40:41,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 10:40:41,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 10:40:41,059 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 10:40:41,059 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 10:40:41,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 10:40:41,059 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 10:40:41,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:40:41,060 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 10:40:41,060 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 10:40:41,060 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 10:40:41,060 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-20 10:40:41,060 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 10:40:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 10:40:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 10:40:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 10:40:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 10:40:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 10:40:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 10:40:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-20 10:40:41,062 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 10:40:41,062 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 10:40:41,062 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 10:40:41,062 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 10:40:41,062 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 10:40:41,062 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 10:40:41,062 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 10:40:41,062 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 10:40:41,062 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 10:40:41,063 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 10:40:41,063 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 10:40:41,063 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 10:40:41,063 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-20 10:40:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:40:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 10:40:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 10:40:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 10:40:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 10:40:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 10:40:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-20 10:40:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 10:40:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 10:40:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 10:40:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 10:40:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 10:40:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 10:40:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:40:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 10:40:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 10:40:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:40:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 10:40:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 10:40:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:40:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 10:40:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 10:40:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:40:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 10:40:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 10:40:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 10:40:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 10:40:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 10:40:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 10:40:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 10:40:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 10:40:41,067 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 10:40:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 10:40:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 10:40:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 10:40:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 10:40:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:40:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 10:40:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 10:40:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 10:40:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-20 10:40:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 10:40:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 10:40:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 10:40:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 10:40:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 10:40:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 10:40:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-20 10:40:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-20 10:40:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 10:40:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 10:40:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 10:40:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:40:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 10:40:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:40:42,238 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:40:42,239 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 10:40:42,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:40:42 BoogieIcfgContainer [2020-07-20 10:40:42,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:40:42,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:40:42,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:40:42,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:40:42,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:40:40" (1/3) ... [2020-07-20 10:40:42,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bd57c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:40:42, skipping insertion in model container [2020-07-20 10:40:42,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:40" (2/3) ... [2020-07-20 10:40:42,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bd57c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:40:42, skipping insertion in model container [2020-07-20 10:40:42,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:40:42" (3/3) ... [2020-07-20 10:40:42,253 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2020-07-20 10:40:42,264 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:40:42,272 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:40:42,287 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:40:42,313 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:40:42,314 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:40:42,314 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:40:42,314 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:40:42,314 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:40:42,315 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:40:42,315 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:40:42,315 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:40:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-07-20 10:40:42,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 10:40:42,349 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:42,350 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 10:40:42,351 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:42,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:42,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1737906003, now seen corresponding path program 1 times [2020-07-20 10:40:42,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:42,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017162278] [2020-07-20 10:40:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:40:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:42,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:40:42,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:42,647 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 10:40:42,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:42,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017162278] [2020-07-20 10:40:42,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:42,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:40:42,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86302138] [2020-07-20 10:40:42,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:40:42,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:42,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:40:42,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:40:42,675 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 2 states. [2020-07-20 10:40:42,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:42,728 INFO L93 Difference]: Finished difference Result 286 states and 357 transitions. [2020-07-20 10:40:42,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:40:42,730 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 10:40:42,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:42,745 INFO L225 Difference]: With dead ends: 286 [2020-07-20 10:40:42,745 INFO L226 Difference]: Without dead ends: 143 [2020-07-20 10:40:42,750 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 10:40:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-07-20 10:40:42,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-07-20 10:40:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-07-20 10:40:42,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2020-07-20 10:40:42,818 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 46 [2020-07-20 10:40:42,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:42,818 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2020-07-20 10:40:42,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:40:42,819 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2020-07-20 10:40:42,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 10:40:42,823 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:42,823 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 10:40:43,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:43,037 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:43,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:43,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1744597296, now seen corresponding path program 1 times [2020-07-20 10:40:43,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:43,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920595896] [2020-07-20 10:40:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:40:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:43,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 10:40:43,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:43,335 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 10:40:43,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:43,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920595896] [2020-07-20 10:40:43,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:43,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:40:43,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68924976] [2020-07-20 10:40:43,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:40:43,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:43,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:40:43,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:43,339 INFO L87 Difference]: Start difference. First operand 143 states and 170 transitions. Second operand 3 states. [2020-07-20 10:40:43,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:43,366 INFO L93 Difference]: Finished difference Result 262 states and 319 transitions. [2020-07-20 10:40:43,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:40:43,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 10:40:43,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:43,370 INFO L225 Difference]: With dead ends: 262 [2020-07-20 10:40:43,370 INFO L226 Difference]: Without dead ends: 143 [2020-07-20 10:40:43,372 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 10:40:43,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-07-20 10:40:43,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-07-20 10:40:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-07-20 10:40:43,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 169 transitions. [2020-07-20 10:40:43,390 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 169 transitions. Word has length 47 [2020-07-20 10:40:43,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:43,391 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 169 transitions. [2020-07-20 10:40:43,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:40:43,391 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 169 transitions. [2020-07-20 10:40:43,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-20 10:40:43,394 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:43,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:43,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:43,608 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:43,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:43,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1654731465, now seen corresponding path program 1 times [2020-07-20 10:40:43,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:43,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081057196] [2020-07-20 10:40:43,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:40:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:43,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 10:40:43,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:43,885 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 10:40:43,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:43,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081057196] [2020-07-20 10:40:43,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:43,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 10:40:43,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504597877] [2020-07-20 10:40:43,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 10:40:43,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:43,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 10:40:43,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:40:43,890 INFO L87 Difference]: Start difference. First operand 143 states and 169 transitions. Second operand 7 states. [2020-07-20 10:40:44,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:44,676 INFO L93 Difference]: Finished difference Result 369 states and 482 transitions. [2020-07-20 10:40:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 10:40:44,677 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-07-20 10:40:44,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:44,687 INFO L225 Difference]: With dead ends: 369 [2020-07-20 10:40:44,687 INFO L226 Difference]: Without dead ends: 250 [2020-07-20 10:40:44,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-07-20 10:40:44,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-07-20 10:40:44,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 221. [2020-07-20 10:40:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-07-20 10:40:44,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 272 transitions. [2020-07-20 10:40:44,726 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 272 transitions. Word has length 69 [2020-07-20 10:40:44,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:44,726 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 272 transitions. [2020-07-20 10:40:44,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 10:40:44,726 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 272 transitions. [2020-07-20 10:40:44,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-20 10:40:44,729 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:44,730 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 10:40:44,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:44,943 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:44,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:44,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1339692446, now seen corresponding path program 1 times [2020-07-20 10:40:44,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:44,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095781809] [2020-07-20 10:40:44,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:40:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:45,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 10:40:45,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:45,171 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 10:40:45,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:45,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095781809] [2020-07-20 10:40:45,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:45,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:40:45,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623767645] [2020-07-20 10:40:45,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:40:45,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:45,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:40:45,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:40:45,174 INFO L87 Difference]: Start difference. First operand 221 states and 272 transitions. Second operand 6 states. [2020-07-20 10:40:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:45,466 INFO L93 Difference]: Finished difference Result 604 states and 785 transitions. [2020-07-20 10:40:45,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 10:40:45,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-07-20 10:40:45,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:45,472 INFO L225 Difference]: With dead ends: 604 [2020-07-20 10:40:45,472 INFO L226 Difference]: Without dead ends: 389 [2020-07-20 10:40:45,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 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 10:40:45,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-07-20 10:40:45,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 385. [2020-07-20 10:40:45,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-07-20 10:40:45,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 471 transitions. [2020-07-20 10:40:45,539 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 471 transitions. Word has length 84 [2020-07-20 10:40:45,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:45,542 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 471 transitions. [2020-07-20 10:40:45,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:40:45,542 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 471 transitions. [2020-07-20 10:40:45,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-20 10:40:45,551 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:45,551 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 10:40:45,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:45,752 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:45,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:45,753 INFO L82 PathProgramCache]: Analyzing trace with hash 661895326, now seen corresponding path program 1 times [2020-07-20 10:40:45,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:45,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062982956] [2020-07-20 10:40:45,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:40:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:45,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 10:40:45,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:45,979 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 10:40:45,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:45,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062982956] [2020-07-20 10:40:45,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:45,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:40:45,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333212029] [2020-07-20 10:40:45,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:40:45,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:45,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:40:45,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:40:45,984 INFO L87 Difference]: Start difference. First operand 385 states and 471 transitions. Second operand 6 states. [2020-07-20 10:40:46,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:46,034 INFO L93 Difference]: Finished difference Result 756 states and 950 transitions. [2020-07-20 10:40:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 10:40:46,035 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-07-20 10:40:46,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:46,040 INFO L225 Difference]: With dead ends: 756 [2020-07-20 10:40:46,040 INFO L226 Difference]: Without dead ends: 395 [2020-07-20 10:40:46,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:40:46,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-07-20 10:40:46,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2020-07-20 10:40:46,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-07-20 10:40:46,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 481 transitions. [2020-07-20 10:40:46,096 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 481 transitions. Word has length 88 [2020-07-20 10:40:46,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:46,096 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 481 transitions. [2020-07-20 10:40:46,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:40:46,096 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 481 transitions. [2020-07-20 10:40:46,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-20 10:40:46,098 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:46,099 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 10:40:46,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:46,306 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:46,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:46,307 INFO L82 PathProgramCache]: Analyzing trace with hash 936654940, now seen corresponding path program 1 times [2020-07-20 10:40:46,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:46,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51597713] [2020-07-20 10:40:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:40:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:46,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 10:40:46,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:46,505 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 10:40:46,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:46,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51597713] [2020-07-20 10:40:46,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:46,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 10:40:46,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129206401] [2020-07-20 10:40:46,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 10:40:46,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:46,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 10:40:46,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:40:46,508 INFO L87 Difference]: Start difference. First operand 395 states and 481 transitions. Second operand 5 states. [2020-07-20 10:40:46,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:46,542 INFO L93 Difference]: Finished difference Result 780 states and 996 transitions. [2020-07-20 10:40:46,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 10:40:46,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-07-20 10:40:46,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:46,546 INFO L225 Difference]: With dead ends: 780 [2020-07-20 10:40:46,546 INFO L226 Difference]: Without dead ends: 409 [2020-07-20 10:40:46,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:40:46,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-07-20 10:40:46,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 403. [2020-07-20 10:40:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-07-20 10:40:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 489 transitions. [2020-07-20 10:40:46,595 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 489 transitions. Word has length 88 [2020-07-20 10:40:46,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:46,596 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 489 transitions. [2020-07-20 10:40:46,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 10:40:46,596 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 489 transitions. [2020-07-20 10:40:46,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-20 10:40:46,598 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:46,598 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 10:40:46,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:46,814 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:46,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:46,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1408012101, now seen corresponding path program 1 times [2020-07-20 10:40:46,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:46,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268908732] [2020-07-20 10:40:46,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:40:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:46,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 10:40:46,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:47,017 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 10:40:47,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:47,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268908732] [2020-07-20 10:40:47,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:47,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:40:47,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703218518] [2020-07-20 10:40:47,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:40:47,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:47,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:40:47,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:47,019 INFO L87 Difference]: Start difference. First operand 403 states and 489 transitions. Second operand 3 states. [2020-07-20 10:40:47,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:47,067 INFO L93 Difference]: Finished difference Result 1101 states and 1437 transitions. [2020-07-20 10:40:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:40:47,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-07-20 10:40:47,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:47,072 INFO L225 Difference]: With dead ends: 1101 [2020-07-20 10:40:47,073 INFO L226 Difference]: Without dead ends: 713 [2020-07-20 10:40:47,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:47,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-07-20 10:40:47,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 710. [2020-07-20 10:40:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 710 states. [2020-07-20 10:40:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 884 transitions. [2020-07-20 10:40:47,114 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 884 transitions. Word has length 88 [2020-07-20 10:40:47,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:47,115 INFO L479 AbstractCegarLoop]: Abstraction has 710 states and 884 transitions. [2020-07-20 10:40:47,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:40:47,115 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 884 transitions. [2020-07-20 10:40:47,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-07-20 10:40:47,117 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:47,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:47,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:47,332 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:47,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:47,333 INFO L82 PathProgramCache]: Analyzing trace with hash 350479285, now seen corresponding path program 1 times [2020-07-20 10:40:47,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:47,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474963053] [2020-07-20 10:40:47,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:40:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:40:47,531 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:40:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:40:47,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:40:47,912 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:40:47,912 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:40:48,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:48,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:40:48 BoogieIcfgContainer [2020-07-20 10:40:48,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:40:48,371 INFO L168 Benchmark]: Toolchain (without parser) took 8129.78 ms. Allocated memory was 139.5 MB in the beginning and 320.3 MB in the end (delta: 180.9 MB). Free memory was 102.3 MB in the beginning and 267.7 MB in the end (delta: -165.4 MB). Peak memory consumption was 165.1 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:48,373 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 10:40:48,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.10 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 171.6 MB in the end (delta: -69.7 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:48,378 INFO L168 Benchmark]: Boogie Preprocessor took 94.01 ms. Allocated memory is still 202.4 MB. Free memory was 171.6 MB in the beginning and 167.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:48,387 INFO L168 Benchmark]: RCFGBuilder took 1246.17 ms. Allocated memory was 202.4 MB in the beginning and 237.0 MB in the end (delta: 34.6 MB). Free memory was 167.5 MB in the beginning and 194.6 MB in the end (delta: -27.1 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:48,388 INFO L168 Benchmark]: TraceAbstraction took 6121.56 ms. Allocated memory was 237.0 MB in the beginning and 320.3 MB in the end (delta: 83.4 MB). Free memory was 194.6 MB in the beginning and 267.7 MB in the end (delta: -73.1 MB). Peak memory consumption was 159.9 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:48,396 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 662.10 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 171.6 MB in the end (delta: -69.7 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.01 ms. Allocated memory is still 202.4 MB. Free memory was 171.6 MB in the beginning and 167.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1246.17 ms. Allocated memory was 202.4 MB in the beginning and 237.0 MB in the end (delta: 34.6 MB). Free memory was 167.5 MB in the beginning and 194.6 MB in the end (delta: -27.1 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6121.56 ms. Allocated memory was 237.0 MB in the beginning and 320.3 MB in the end (delta: 83.4 MB). Free memory was 194.6 MB in the beginning and 267.7 MB in the end (delta: -73.1 MB). Peak memory consumption was 159.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 73]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L554] int pumpRunning = 0; [L555] int systemActive = 1; [L878] int waterLevel = 1; [L879] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=46, \old(head)=68, \old(head)=90, \old(methaneLevelCritical)=59, \old(pumpRunning)=56, \old(systemActive)=98, \old(waterLevel)=93, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L525] int retValue_acc ; [L526] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L530] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L531] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L532] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L868] int retValue_acc ; [L871] retValue_acc = 1 [L872] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L532] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L532] tmp = valid_product() [L534] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L536] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L537] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L516] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L778] int splverifierCounter ; [L779] int tmp ; [L780] int tmp___0 ; [L781] int tmp___1 ; [L782] int tmp___2 ; [L785] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L787] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L789] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L795] tmp = __VERIFIER_nondet_int() [L797] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L799] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L896] COND TRUE waterLevel < 2 [L897] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L799] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L805] tmp___0 = __VERIFIER_nondet_int() [L807] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L809] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L908] COND FALSE !(\read(methaneLevelCritical)) [L911] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L809] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L815] tmp___2 = __VERIFIER_nondet_int() [L817] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___2=1, waterLevel=2] [L830] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L561] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L568] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L570] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L642] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L645] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L660] CALL processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L616] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L619] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L634] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L590] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L593] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L595] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L745] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L958] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L961] COND FALSE !(waterLevel < 2) [L965] retValue_acc = 0 [L966] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L745] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L752] retValue_acc = tmp___0 [L753] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L595] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L595] tmp = isHighWaterLevel() [L597] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L599] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L670] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L599] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L634] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L660] RET processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L570] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L576] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L44] int tmp ; [L45] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L49] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L49] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L53] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L53] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L57] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L73] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1232 SDtfs, 576 SDslu, 2263 SDs, 0 SdLazy, 584 SolverSat, 129 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 512 GetRequests, 485 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=710occurred in iteration=7, 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, 7 MinimizatonAttempts, 42 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 602 NumberOfCodeBlocks, 602 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 68225 SizeOfPredicates, 16 NumberOfNonLiveVariables, 4850 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...