./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product64.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product64.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d436abf98cab5db4fbcf1977ce5628e2227cd7aa643df1d726e32cf2e71cb81f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 11:37:04,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:37:04,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:37:04,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:37:04,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:37:04,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:37:04,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:37:04,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:37:04,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:37:04,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:37:04,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:37:04,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:37:04,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:37:04,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:37:04,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:37:04,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:37:04,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:37:04,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:37:04,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:37:04,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:37:04,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:37:04,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:37:04,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:37:04,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:37:04,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:37:04,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:37:04,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:37:04,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:37:04,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:37:04,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:37:04,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:37:04,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:37:04,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:37:04,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:37:04,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:37:04,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:37:04,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:37:04,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:37:04,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:37:04,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:37:04,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:37:04,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:37:04,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:37:04,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:37:04,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:37:04,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:37:04,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:37:04,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:37:04,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:37:04,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:37:04,760 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:37:04,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:37:04,760 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:37:04,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:37:04,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:37:04,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:37:04,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:37:04,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:37:04,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:37:04,761 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:37:04,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:37:04,761 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:37:04,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:37:04,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:37:04,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:37:04,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:37:04,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:37:04,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:37:04,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:37:04,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:37:04,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:37:04,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:37:04,763 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:37:04,763 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:37:04,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:37:04,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:37:04,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d436abf98cab5db4fbcf1977ce5628e2227cd7aa643df1d726e32cf2e71cb81f [2021-12-22 11:37:04,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:37:04,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:37:04,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:37:04,970 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:37:04,971 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:37:04,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product64.cil.c [2021-12-22 11:37:05,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab677600/8542a3292e3a46fcb735ac83c76cb2b3/FLAG1fec2a134 [2021-12-22 11:37:05,462 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:37:05,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product64.cil.c [2021-12-22 11:37:05,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab677600/8542a3292e3a46fcb735ac83c76cb2b3/FLAG1fec2a134 [2021-12-22 11:37:05,489 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab677600/8542a3292e3a46fcb735ac83c76cb2b3 [2021-12-22 11:37:05,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:37:05,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:37:05,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:37:05,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:37:05,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:37:05,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:37:05" (1/1) ... [2021-12-22 11:37:05,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61885527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:37:05, skipping insertion in model container [2021-12-22 11:37:05,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:37:05" (1/1) ... [2021-12-22 11:37:05,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:37:05,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:37:05,741 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product64.cil.c[19022,19035] [2021-12-22 11:37:05,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:37:05,768 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:37:05,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product64.cil.c[19022,19035] [2021-12-22 11:37:05,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:37:05,844 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:37:05,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:37:05 WrapperNode [2021-12-22 11:37:05,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:37:05,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:37:05,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:37:05,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:37:05,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:37:05" (1/1) ... [2021-12-22 11:37:05,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:37:05" (1/1) ... [2021-12-22 11:37:05,882 INFO L137 Inliner]: procedures = 59, calls = 164, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 288 [2021-12-22 11:37:05,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:37:05,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:37:05,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:37:05,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:37:05,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:37:05" (1/1) ... [2021-12-22 11:37:05,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:37:05" (1/1) ... [2021-12-22 11:37:05,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:37:05" (1/1) ... [2021-12-22 11:37:05,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:37:05" (1/1) ... [2021-12-22 11:37:05,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:37:05" (1/1) ... [2021-12-22 11:37:05,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:37:05" (1/1) ... [2021-12-22 11:37:05,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:37:05" (1/1) ... [2021-12-22 11:37:05,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:37:05,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:37:05,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:37:05,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:37:05,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:37:05" (1/1) ... [2021-12-22 11:37:05,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:37:05,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:37:05,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 11:37:05,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 11:37:05,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:37:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-12-22 11:37:05,966 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-12-22 11:37:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-22 11:37:05,966 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-22 11:37:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-12-22 11:37:05,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-12-22 11:37:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-22 11:37:05,967 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-22 11:37:05,967 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-12-22 11:37:05,967 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-12-22 11:37:05,967 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-12-22 11:37:05,967 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-12-22 11:37:05,967 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-12-22 11:37:05,967 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-12-22 11:37:05,967 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-12-22 11:37:05,968 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-12-22 11:37:05,968 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-12-22 11:37:05,968 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-12-22 11:37:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:37:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-12-22 11:37:05,969 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-12-22 11:37:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:37:05,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:37:06,027 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:37:06,028 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:37:06,254 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:37:06,265 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:37:06,268 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 11:37:06,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:37:06 BoogieIcfgContainer [2021-12-22 11:37:06,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:37:06,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:37:06,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:37:06,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:37:06,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:37:05" (1/3) ... [2021-12-22 11:37:06,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e613022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:37:06, skipping insertion in model container [2021-12-22 11:37:06,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:37:05" (2/3) ... [2021-12-22 11:37:06,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e613022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:37:06, skipping insertion in model container [2021-12-22 11:37:06,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:37:06" (3/3) ... [2021-12-22 11:37:06,278 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product64.cil.c [2021-12-22 11:37:06,282 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:37:06,282 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:37:06,311 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:37:06,316 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 11:37:06,316 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:37:06,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 84 states have (on average 1.369047619047619) internal successors, (115), 95 states have internal predecessors, (115), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 14 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-22 11:37:06,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-22 11:37:06,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:37:06,337 INFO L514 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] [2021-12-22 11:37:06,337 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:37:06,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:37:06,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1815405350, now seen corresponding path program 1 times [2021-12-22 11:37:06,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:37:06,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565682877] [2021-12-22 11:37:06,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:37:06,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:37:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:37:06,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 11:37:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:37:06,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:37:06,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:37:06,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565682877] [2021-12-22 11:37:06,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565682877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:37:06,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:37:06,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 11:37:06,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968128654] [2021-12-22 11:37:06,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:37:06,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 11:37:06,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:37:06,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 11:37:06,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 11:37:06,526 INFO L87 Difference]: Start difference. First operand has 115 states, 84 states have (on average 1.369047619047619) internal successors, (115), 95 states have internal predecessors, (115), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 14 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 11:37:06,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:37:06,550 INFO L93 Difference]: Finished difference Result 222 states and 301 transitions. [2021-12-22 11:37:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 11:37:06,552 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-22 11:37:06,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:37:06,558 INFO L225 Difference]: With dead ends: 222 [2021-12-22 11:37:06,561 INFO L226 Difference]: Without dead ends: 106 [2021-12-22 11:37:06,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 11:37:06,568 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:37:06,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:37:06,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-22 11:37:06,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-12-22 11:37:06,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 87 states have internal predecessors, (101), 19 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-22 11:37:06,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 138 transitions. [2021-12-22 11:37:06,619 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 138 transitions. Word has length 25 [2021-12-22 11:37:06,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:37:06,619 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 138 transitions. [2021-12-22 11:37:06,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 11:37:06,619 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 138 transitions. [2021-12-22 11:37:06,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 11:37:06,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:37:06,621 INFO L514 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] [2021-12-22 11:37:06,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 11:37:06,621 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:37:06,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:37:06,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1446667371, now seen corresponding path program 1 times [2021-12-22 11:37:06,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:37:06,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031260463] [2021-12-22 11:37:06,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:37:06,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:37:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:37:06,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 11:37:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:37:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:37:06,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:37:06,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031260463] [2021-12-22 11:37:06,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031260463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:37:06,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:37:06,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 11:37:06,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724441037] [2021-12-22 11:37:06,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:37:06,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:37:06,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:37:06,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:37:06,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 11:37:06,718 INFO L87 Difference]: Start difference. First operand 106 states and 138 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 11:37:06,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:37:06,731 INFO L93 Difference]: Finished difference Result 173 states and 225 transitions. [2021-12-22 11:37:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:37:06,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-12-22 11:37:06,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:37:06,733 INFO L225 Difference]: With dead ends: 173 [2021-12-22 11:37:06,733 INFO L226 Difference]: Without dead ends: 97 [2021-12-22 11:37:06,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 11:37:06,735 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 17 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:37:06,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 228 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:37:06,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-22 11:37:06,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-12-22 11:37:06,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 71 states have (on average 1.323943661971831) internal successors, (94), 81 states have internal predecessors, (94), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-22 11:37:06,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 126 transitions. [2021-12-22 11:37:06,751 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 126 transitions. Word has length 26 [2021-12-22 11:37:06,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:37:06,751 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 126 transitions. [2021-12-22 11:37:06,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 11:37:06,772 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 126 transitions. [2021-12-22 11:37:06,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-22 11:37:06,773 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:37:06,773 INFO L514 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] [2021-12-22 11:37:06,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 11:37:06,774 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:37:06,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:37:06,774 INFO L85 PathProgramCache]: Analyzing trace with hash -752091658, now seen corresponding path program 1 times [2021-12-22 11:37:06,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:37:06,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400636320] [2021-12-22 11:37:06,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:37:06,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:37:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:37:06,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 11:37:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:37:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:37:06,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:37:06,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400636320] [2021-12-22 11:37:06,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400636320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:37:06,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:37:06,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 11:37:06,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093287417] [2021-12-22 11:37:06,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:37:06,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:37:06,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:37:06,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:37:06,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 11:37:06,857 INFO L87 Difference]: Start difference. First operand 97 states and 126 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 11:37:06,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:37:06,888 INFO L93 Difference]: Finished difference Result 275 states and 363 transitions. [2021-12-22 11:37:06,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:37:06,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-12-22 11:37:06,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:37:06,890 INFO L225 Difference]: With dead ends: 275 [2021-12-22 11:37:06,890 INFO L226 Difference]: Without dead ends: 185 [2021-12-22 11:37:06,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 11:37:06,892 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 118 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:37:06,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 274 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:37:06,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-22 11:37:06,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2021-12-22 11:37:06,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 131 states have (on average 1.3435114503816794) internal successors, (176), 150 states have internal predecessors, (176), 32 states have call successors, (32), 18 states have call predecessors, (32), 18 states have return successors, (32), 21 states have call predecessors, (32), 32 states have call successors, (32) [2021-12-22 11:37:06,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 240 transitions. [2021-12-22 11:37:06,908 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 240 transitions. Word has length 31 [2021-12-22 11:37:06,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:37:06,908 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 240 transitions. [2021-12-22 11:37:06,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 11:37:06,908 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 240 transitions. [2021-12-22 11:37:06,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-22 11:37:06,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:37:06,910 INFO L514 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] [2021-12-22 11:37:06,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 11:37:06,910 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:37:06,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:37:06,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1994729148, now seen corresponding path program 1 times [2021-12-22 11:37:06,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:37:06,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922186267] [2021-12-22 11:37:06,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:37:06,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:37:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:37:06,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 11:37:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:37:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:37:06,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:37:06,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922186267] [2021-12-22 11:37:06,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922186267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:37:06,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:37:06,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 11:37:06,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951505702] [2021-12-22 11:37:06,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:37:06,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 11:37:06,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:37:06,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 11:37:06,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 11:37:06,974 INFO L87 Difference]: Start difference. First operand 182 states and 240 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 11:37:07,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:37:07,023 INFO L93 Difference]: Finished difference Result 526 states and 715 transitions. [2021-12-22 11:37:07,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 11:37:07,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-12-22 11:37:07,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:37:07,027 INFO L225 Difference]: With dead ends: 526 [2021-12-22 11:37:07,027 INFO L226 Difference]: Without dead ends: 351 [2021-12-22 11:37:07,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:37:07,029 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 95 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:37:07,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 522 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:37:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-12-22 11:37:07,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 345. [2021-12-22 11:37:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 246 states have (on average 1.3252032520325203) internal successors, (326), 281 states have internal predecessors, (326), 64 states have call successors, (64), 36 states have call predecessors, (64), 34 states have return successors, (66), 40 states have call predecessors, (66), 64 states have call successors, (66) [2021-12-22 11:37:07,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 456 transitions. [2021-12-22 11:37:07,054 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 456 transitions. Word has length 34 [2021-12-22 11:37:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:37:07,054 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 456 transitions. [2021-12-22 11:37:07,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 11:37:07,055 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 456 transitions. [2021-12-22 11:37:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-22 11:37:07,057 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:37:07,057 INFO L514 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] [2021-12-22 11:37:07,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 11:37:07,058 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:37:07,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:37:07,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1105434487, now seen corresponding path program 1 times [2021-12-22 11:37:07,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:37:07,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168432952] [2021-12-22 11:37:07,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:37:07,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:37:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:37:07,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:37:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:37:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:37:07,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:37:07,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168432952] [2021-12-22 11:37:07,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168432952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:37:07,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:37:07,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 11:37:07,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587180106] [2021-12-22 11:37:07,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:37:07,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 11:37:07,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:37:07,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 11:37:07,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 11:37:07,104 INFO L87 Difference]: Start difference. First operand 345 states and 456 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 11:37:07,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:37:07,175 INFO L93 Difference]: Finished difference Result 897 states and 1216 transitions. [2021-12-22 11:37:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 11:37:07,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-12-22 11:37:07,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:37:07,183 INFO L225 Difference]: With dead ends: 897 [2021-12-22 11:37:07,183 INFO L226 Difference]: Without dead ends: 559 [2021-12-22 11:37:07,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:37:07,194 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 84 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:37:07,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 599 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:37:07,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-12-22 11:37:07,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 547. [2021-12-22 11:37:07,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 398 states have (on average 1.2738693467336684) internal successors, (507), 431 states have internal predecessors, (507), 84 states have call successors, (84), 68 states have call predecessors, (84), 64 states have return successors, (108), 70 states have call predecessors, (108), 84 states have call successors, (108) [2021-12-22 11:37:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 699 transitions. [2021-12-22 11:37:07,236 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 699 transitions. Word has length 36 [2021-12-22 11:37:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:37:07,237 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 699 transitions. [2021-12-22 11:37:07,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 11:37:07,237 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 699 transitions. [2021-12-22 11:37:07,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 11:37:07,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:37:07,239 INFO L514 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] [2021-12-22 11:37:07,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 11:37:07,239 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:37:07,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:37:07,240 INFO L85 PathProgramCache]: Analyzing trace with hash 695972842, now seen corresponding path program 1 times [2021-12-22 11:37:07,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:37:07,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650328261] [2021-12-22 11:37:07,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:37:07,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:37:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 11:37:07,269 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 11:37:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 11:37:07,296 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 11:37:07,297 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 11:37:07,297 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 11:37:07,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 11:37:07,303 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-22 11:37:07,305 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 11:37:07,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:37:07 BoogieIcfgContainer [2021-12-22 11:37:07,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 11:37:07,352 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 11:37:07,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 11:37:07,352 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 11:37:07,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:37:06" (3/4) ... [2021-12-22 11:37:07,354 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-22 11:37:07,399 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 11:37:07,404 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 11:37:07,405 INFO L158 Benchmark]: Toolchain (without parser) took 1912.26ms. Allocated memory was 88.1MB in the beginning and 125.8MB in the end (delta: 37.7MB). Free memory was 57.4MB in the beginning and 87.9MB in the end (delta: -30.5MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2021-12-22 11:37:07,406 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 88.1MB. Free memory was 47.2MB in the beginning and 47.1MB in the end (delta: 75.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 11:37:07,406 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.37ms. Allocated memory was 88.1MB in the beginning and 125.8MB in the end (delta: 37.7MB). Free memory was 57.2MB in the beginning and 94.9MB in the end (delta: -37.6MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2021-12-22 11:37:07,407 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.10ms. Allocated memory is still 125.8MB. Free memory was 94.9MB in the beginning and 92.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 11:37:07,407 INFO L158 Benchmark]: Boogie Preprocessor took 24.38ms. Allocated memory is still 125.8MB. Free memory was 92.2MB in the beginning and 90.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 11:37:07,407 INFO L158 Benchmark]: RCFGBuilder took 362.91ms. Allocated memory is still 125.8MB. Free memory was 90.6MB in the beginning and 72.6MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-22 11:37:07,407 INFO L158 Benchmark]: TraceAbstraction took 1079.79ms. Allocated memory is still 125.8MB. Free memory was 71.8MB in the beginning and 92.1MB in the end (delta: -20.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 11:37:07,408 INFO L158 Benchmark]: Witness Printer took 52.47ms. Allocated memory is still 125.8MB. Free memory was 92.1MB in the beginning and 87.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 11:37:07,409 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 88.1MB. Free memory was 47.2MB in the beginning and 47.1MB in the end (delta: 75.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.37ms. Allocated memory was 88.1MB in the beginning and 125.8MB in the end (delta: 37.7MB). Free memory was 57.2MB in the beginning and 94.9MB in the end (delta: -37.6MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.10ms. Allocated memory is still 125.8MB. Free memory was 94.9MB in the beginning and 92.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.38ms. Allocated memory is still 125.8MB. Free memory was 92.2MB in the beginning and 90.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 362.91ms. Allocated memory is still 125.8MB. Free memory was 90.6MB in the beginning and 72.6MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1079.79ms. Allocated memory is still 125.8MB. Free memory was 71.8MB in the beginning and 92.1MB in the end (delta: -20.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 52.47ms. Allocated memory is still 125.8MB. Free memory was 92.1MB in the beginning and 87.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1006]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L100] int pumpRunning = 0; [L101] int systemActive = 1; [L437] int waterLevel = 1; [L438] int methaneLevelCritical = 0; [L709] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L906] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L979] int retValue_acc ; [L980] int tmp ; [L984] FCALL select_helpers() [L985] FCALL select_features() [L986] CALL, EXPR valid_product() [L79] int retValue_acc ; [L82] retValue_acc = 1 [L83] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L986] RET, EXPR valid_product() [L986] tmp = valid_product() [L988] COND TRUE \read(tmp) [L990] FCALL setup() [L991] CALL runTest() [L973] CALL test() [L368] int splverifierCounter ; [L369] int tmp ; [L370] int tmp___0 ; [L371] int tmp___1 ; [L372] int tmp___2 ; [L375] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L377] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L379] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L385] tmp = __VERIFIER_nondet_int() [L387] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L389] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L455] COND TRUE waterLevel < 2 [L456] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L389] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L395] tmp___0 = __VERIFIER_nondet_int() [L397] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L405] tmp___2 = __VERIFIER_nondet_int() [L407] COND FALSE !(\read(tmp___2)) [L413] tmp___1 = __VERIFIER_nondet_int() [L415] COND TRUE \read(tmp___1) [L417] CALL stopSystem() [L344] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L351] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L417] RET stopSystem() [L424] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L108] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L115] COND FALSE !(\read(systemActive)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L123] CALL __utac_acc__Specification3_spec__1() [L1012] int tmp ; [L1013] int tmp___0 ; [L1014] int tmp___1 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L1018] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L476] int retValue_acc ; [L479] retValue_acc = methaneLevelCritical [L480] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=0, waterLevel=2] [L1018] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L1018] tmp = isMethaneLevelCritical() [L1020] COND FALSE !(\read(tmp)) [L1024] CALL, EXPR getWaterLevel() [L508] int retValue_acc ; [L511] retValue_acc = waterLevel [L512] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=2, systemActive=0, waterLevel=2] [L1024] RET, EXPR getWaterLevel() [L1024] tmp___0 = getWaterLevel() [L1026] COND TRUE tmp___0 == 2 [L1028] CALL, EXPR isPumpRunning() [L258] int retValue_acc ; [L261] retValue_acc = pumpRunning [L262] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=0, waterLevel=2] [L1028] RET, EXPR isPumpRunning() [L1028] tmp___1 = isPumpRunning() [L1030] COND FALSE !(\read(tmp___1)) [L1034] CALL __automaton_fail() [L1006] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 115 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 318 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 314 mSDsluCounter, 1770 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1030 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 740 mSDtfsCounter, 68 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=547occurred in iteration=5, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 21 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 248 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2021-12-22 11:37:07,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE