./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product31.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_product31.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 5b1e1d3e485748d25a44a97cbcf16885148403d3faf86da44fdb361034bb1dc7 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 11:36:44,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:36:44,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:36:44,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:36:44,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:36:44,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:36:44,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:36:44,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:36:44,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:36:44,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:36:44,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:36:44,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:36:44,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:36:44,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:36:44,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:36:44,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:36:44,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:36:44,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:36:44,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:36:44,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:36:44,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:36:44,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:36:44,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:36:44,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:36:44,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:36:44,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:36:44,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:36:44,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:36:44,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:36:44,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:36:44,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:36:44,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:36:44,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:36:44,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:36:44,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:36:44,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:36:44,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:36:44,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:36:44,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:36:44,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:36:44,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:36:44,802 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:36:44,821 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:36:44,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:36:44,821 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:36:44,822 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:36:44,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:36:44,822 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:36:44,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:36:44,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:36:44,823 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:36:44,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:36:44,824 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:36:44,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:36:44,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:36:44,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:36:44,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:36:44,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:36:44,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:36:44,825 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:36:44,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:36:44,825 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:36:44,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:36:44,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:36:44,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:36:44,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:36:44,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:36:44,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:36:44,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:36:44,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:36:44,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:36:44,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:36:44,828 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:36:44,828 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:36:44,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:36:44,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:36:44,828 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b1e1d3e485748d25a44a97cbcf16885148403d3faf86da44fdb361034bb1dc7 [2021-12-22 11:36:44,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:36:45,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:36:45,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:36:45,019 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:36:45,020 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:36:45,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product31.cil.c [2021-12-22 11:36:45,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c73ad85f6/17d8bdc896894b28907dbd8673b7c1cc/FLAG6b415776c [2021-12-22 11:36:45,498 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:36:45,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product31.cil.c [2021-12-22 11:36:45,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c73ad85f6/17d8bdc896894b28907dbd8673b7c1cc/FLAG6b415776c [2021-12-22 11:36:45,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c73ad85f6/17d8bdc896894b28907dbd8673b7c1cc [2021-12-22 11:36:45,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:36:45,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:36:45,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:36:45,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:36:45,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:36:45,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:36:45" (1/1) ... [2021-12-22 11:36:45,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277fa074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:36:45, skipping insertion in model container [2021-12-22 11:36:45,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:36:45" (1/1) ... [2021-12-22 11:36:45,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:36:45,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:36:45,701 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_product31.cil.c[2984,2997] [2021-12-22 11:36:45,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:36:45,768 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:36:45,786 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_product31.cil.c[2984,2997] [2021-12-22 11:36:45,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:36:45,838 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:36:45,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:36:45 WrapperNode [2021-12-22 11:36:45,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:36:45,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:36:45,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:36:45,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:36:45,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:36:45" (1/1) ... [2021-12-22 11:36:45,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:36:45" (1/1) ... [2021-12-22 11:36:45,890 INFO L137 Inliner]: procedures = 55, calls = 158, calls flagged for inlining = 21, calls inlined = 17, statements flattened = 239 [2021-12-22 11:36:45,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:36:45,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:36:45,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:36:45,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:36:45,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:36:45" (1/1) ... [2021-12-22 11:36:45,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:36:45" (1/1) ... [2021-12-22 11:36:45,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:36:45" (1/1) ... [2021-12-22 11:36:45,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:36:45" (1/1) ... [2021-12-22 11:36:45,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:36:45" (1/1) ... [2021-12-22 11:36:45,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:36:45" (1/1) ... [2021-12-22 11:36:45,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:36:45" (1/1) ... [2021-12-22 11:36:45,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:36:45,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:36:45,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:36:45,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:36:45,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:36:45" (1/1) ... [2021-12-22 11:36:45,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:36:45,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:36:45,962 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 11:36:45,964 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 11:36:45,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:36:45,986 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-12-22 11:36:45,986 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-12-22 11:36:45,986 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-22 11:36:45,986 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-22 11:36:45,987 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-22 11:36:45,987 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-22 11:36:45,987 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-12-22 11:36:45,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-12-22 11:36:45,987 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-12-22 11:36:45,987 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-12-22 11:36:45,987 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-12-22 11:36:45,987 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-12-22 11:36:45,988 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-12-22 11:36:45,988 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-12-22 11:36:45,988 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-12-22 11:36:45,988 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-12-22 11:36:45,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:36:45,988 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-12-22 11:36:45,988 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-12-22 11:36:45,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:36:45,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:36:46,049 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:36:46,050 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:36:46,279 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:36:46,284 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:36:46,284 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 11:36:46,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:36:46 BoogieIcfgContainer [2021-12-22 11:36:46,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:36:46,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:36:46,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:36:46,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:36:46,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:36:45" (1/3) ... [2021-12-22 11:36:46,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537d7c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:36:46, skipping insertion in model container [2021-12-22 11:36:46,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:36:45" (2/3) ... [2021-12-22 11:36:46,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537d7c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:36:46, skipping insertion in model container [2021-12-22 11:36:46,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:36:46" (3/3) ... [2021-12-22 11:36:46,295 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product31.cil.c [2021-12-22 11:36:46,298 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:36:46,299 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:36:46,327 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:36:46,331 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 11:36:46,332 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:36:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 70 states have (on average 1.3714285714285714) internal successors, (96), 79 states have internal predecessors, (96), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 12 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-22 11:36:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-22 11:36:46,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:36:46,348 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 11:36:46,348 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:36:46,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:36:46,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2124240942, now seen corresponding path program 1 times [2021-12-22 11:36:46,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:36:46,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211620582] [2021-12-22 11:36:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:36:46,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:36:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:36:46,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 11:36:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:36:46,574 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 11:36:46,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:36:46,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211620582] [2021-12-22 11:36:46,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211620582] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:36:46,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:36:46,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 11:36:46,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755844447] [2021-12-22 11:36:46,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:36:46,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 11:36:46,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:36:46,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 11:36:46,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 11:36:46,604 INFO L87 Difference]: Start difference. First operand has 97 states, 70 states have (on average 1.3714285714285714) internal successors, (96), 79 states have internal predecessors, (96), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 12 states have call predecessors, (16), 16 states have call successors, (16) 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 11:36:46,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:36:46,650 INFO L93 Difference]: Finished difference Result 186 states and 251 transitions. [2021-12-22 11:36:46,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 11:36:46,652 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 11:36:46,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:36:46,661 INFO L225 Difference]: With dead ends: 186 [2021-12-22 11:36:46,662 INFO L226 Difference]: Without dead ends: 88 [2021-12-22 11:36:46,666 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 11:36:46,668 INFO L933 BasicCegarLoop]: 122 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, 122 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 11:36:46,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:36:46,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-22 11:36:46,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-12-22 11:36:46,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 63 states have (on average 1.3015873015873016) internal successors, (82), 71 states have internal predecessors, (82), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-22 11:36:46,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 113 transitions. [2021-12-22 11:36:46,714 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 113 transitions. Word has length 25 [2021-12-22 11:36:46,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:36:46,714 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 113 transitions. [2021-12-22 11:36:46,714 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 11:36:46,715 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 113 transitions. [2021-12-22 11:36:46,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 11:36:46,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:36:46,719 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 11:36:46,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 11:36:46,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:36:46,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:36:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1980426117, now seen corresponding path program 1 times [2021-12-22 11:36:46,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:36:46,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468166320] [2021-12-22 11:36:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:36:46,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:36:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:36:46,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 11:36:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:36:46,805 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 11:36:46,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:36:46,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468166320] [2021-12-22 11:36:46,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468166320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:36:46,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:36:46,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 11:36:46,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622827112] [2021-12-22 11:36:46,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:36:46,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:36:46,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:36:46,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:36:46,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 11:36:46,810 INFO L87 Difference]: Start difference. First operand 88 states and 113 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 11:36:46,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:36:46,833 INFO L93 Difference]: Finished difference Result 138 states and 176 transitions. [2021-12-22 11:36:46,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:36:46,834 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 11:36:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:36:46,836 INFO L225 Difference]: With dead ends: 138 [2021-12-22 11:36:46,837 INFO L226 Difference]: Without dead ends: 79 [2021-12-22 11:36:46,839 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 11:36:46,841 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 16 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 179 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 11:36:46,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 179 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:36:46,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-22 11:36:46,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-12-22 11:36:46,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 65 states have internal predecessors, (75), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-22 11:36:46,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2021-12-22 11:36:46,854 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 26 [2021-12-22 11:36:46,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:36:46,855 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2021-12-22 11:36:46,855 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 11:36:46,856 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2021-12-22 11:36:46,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 11:36:46,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:36:46,857 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] [2021-12-22 11:36:46,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 11:36:46,857 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:36:46,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:36:46,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1475806488, now seen corresponding path program 1 times [2021-12-22 11:36:46,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:36:46,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216643042] [2021-12-22 11:36:46,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:36:46,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:36:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:36:46,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 11:36:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:36:46,917 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 11:36:46,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:36:46,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216643042] [2021-12-22 11:36:46,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216643042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:36:46,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:36:46,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 11:36:46,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331203640] [2021-12-22 11:36:46,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:36:46,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 11:36:46,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:36:46,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 11:36:46,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 11:36:46,921 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 11:36:47,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:36:47,081 INFO L93 Difference]: Finished difference Result 266 states and 347 transitions. [2021-12-22 11:36:47,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 11:36:47,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 30 [2021-12-22 11:36:47,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:36:47,083 INFO L225 Difference]: With dead ends: 266 [2021-12-22 11:36:47,083 INFO L226 Difference]: Without dead ends: 194 [2021-12-22 11:36:47,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 11:36:47,085 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 267 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 11:36:47,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 447 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 11:36:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-22 11:36:47,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 188. [2021-12-22 11:36:47,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 135 states have (on average 1.348148148148148) internal successors, (182), 153 states have internal predecessors, (182), 31 states have call successors, (31), 21 states have call predecessors, (31), 21 states have return successors, (32), 21 states have call predecessors, (32), 31 states have call successors, (32) [2021-12-22 11:36:47,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 245 transitions. [2021-12-22 11:36:47,113 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 245 transitions. Word has length 30 [2021-12-22 11:36:47,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:36:47,113 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 245 transitions. [2021-12-22 11:36:47,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 11:36:47,113 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 245 transitions. [2021-12-22 11:36:47,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-22 11:36:47,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:36:47,114 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 11:36:47,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 11:36:47,114 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:36:47,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:36:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1209009394, now seen corresponding path program 1 times [2021-12-22 11:36:47,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:36:47,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272677964] [2021-12-22 11:36:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:36:47,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:36:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:36:47,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 11:36:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:36:47,169 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 11:36:47,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:36:47,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272677964] [2021-12-22 11:36:47,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272677964] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:36:47,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:36:47,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 11:36:47,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601077974] [2021-12-22 11:36:47,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:36:47,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 11:36:47,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:36:47,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 11:36:47,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 11:36:47,175 INFO L87 Difference]: Start difference. First operand 188 states and 245 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 11:36:47,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:36:47,217 INFO L93 Difference]: Finished difference Result 542 states and 726 transitions. [2021-12-22 11:36:47,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 11:36:47,218 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 11:36:47,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:36:47,225 INFO L225 Difference]: With dead ends: 542 [2021-12-22 11:36:47,225 INFO L226 Difference]: Without dead ends: 361 [2021-12-22 11:36:47,226 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 11:36:47,227 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 71 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:36:47,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 418 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:36:47,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-12-22 11:36:47,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 352. [2021-12-22 11:36:47,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 250 states have (on average 1.328) internal successors, (332), 282 states have internal predecessors, (332), 62 states have call successors, (62), 42 states have call predecessors, (62), 39 states have return successors, (68), 39 states have call predecessors, (68), 62 states have call successors, (68) [2021-12-22 11:36:47,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 462 transitions. [2021-12-22 11:36:47,249 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 462 transitions. Word has length 34 [2021-12-22 11:36:47,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:36:47,250 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 462 transitions. [2021-12-22 11:36:47,250 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 11:36:47,250 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 462 transitions. [2021-12-22 11:36:47,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 11:36:47,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:36:47,252 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 11:36:47,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 11:36:47,252 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:36:47,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:36:47,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2133609996, now seen corresponding path program 1 times [2021-12-22 11:36:47,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:36:47,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546598902] [2021-12-22 11:36:47,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:36:47,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:36:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 11:36:47,272 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 11:36:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 11:36:47,312 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 11:36:47,313 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 11:36:47,313 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 11:36:47,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 11:36:47,317 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-12-22 11:36:47,319 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 11:36:47,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:36:47 BoogieIcfgContainer [2021-12-22 11:36:47,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 11:36:47,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 11:36:47,354 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 11:36:47,355 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 11:36:47,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:36:46" (3/4) ... [2021-12-22 11:36:47,356 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-22 11:36:47,392 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 11:36:47,393 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 11:36:47,393 INFO L158 Benchmark]: Toolchain (without parser) took 1866.95ms. Allocated memory is still 100.7MB. Free memory was 69.6MB in the beginning and 38.1MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-12-22 11:36:47,393 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 83.9MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 11:36:47,394 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.21ms. Allocated memory is still 100.7MB. Free memory was 69.1MB in the beginning and 68.7MB in the end (delta: 386.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 11:36:47,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.41ms. Allocated memory is still 100.7MB. Free memory was 68.7MB in the beginning and 66.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 11:36:47,394 INFO L158 Benchmark]: Boogie Preprocessor took 35.52ms. Allocated memory is still 100.7MB. Free memory was 66.5MB in the beginning and 65.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 11:36:47,394 INFO L158 Benchmark]: RCFGBuilder took 362.07ms. Allocated memory is still 100.7MB. Free memory was 64.5MB in the beginning and 47.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-22 11:36:47,395 INFO L158 Benchmark]: TraceAbstraction took 1063.48ms. Allocated memory is still 100.7MB. Free memory was 47.7MB in the beginning and 42.3MB in the end (delta: 5.4MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2021-12-22 11:36:47,395 INFO L158 Benchmark]: Witness Printer took 38.41ms. Allocated memory is still 100.7MB. Free memory was 42.3MB in the beginning and 38.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 11:36:47,396 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 83.9MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.21ms. Allocated memory is still 100.7MB. Free memory was 69.1MB in the beginning and 68.7MB in the end (delta: 386.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.41ms. Allocated memory is still 100.7MB. Free memory was 68.7MB in the beginning and 66.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.52ms. Allocated memory is still 100.7MB. Free memory was 66.5MB in the beginning and 65.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 362.07ms. Allocated memory is still 100.7MB. Free memory was 64.5MB in the beginning and 47.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1063.48ms. Allocated memory is still 100.7MB. Free memory was 47.7MB in the beginning and 42.3MB in the end (delta: 5.4MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Witness Printer took 38.41ms. Allocated memory is still 100.7MB. Free memory was 42.3MB in the beginning and 38.1MB 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: 150]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L324] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L595] int pumpRunning = 0; [L596] int systemActive = 1; [L878] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L951] int retValue_acc ; [L952] int tmp ; [L956] FCALL select_helpers() [L957] FCALL select_features() [L958] CALL, EXPR valid_product() [L869] int retValue_acc ; [L872] retValue_acc = 1 [L873] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L958] RET, EXPR valid_product() [L958] tmp = valid_product() [L960] COND TRUE \read(tmp) [L962] FCALL setup() [L963] CALL runTest() [L945] CALL test() [L525] int splverifierCounter ; [L526] int tmp ; [L527] int tmp___0 ; [L528] int tmp___1 ; [L529] int tmp___2 ; [L532] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L534] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L536] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L542] tmp = __VERIFIER_nondet_int() [L544] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L546] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L546] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L552] tmp___0 = __VERIFIER_nondet_int() [L554] 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] [L562] tmp___2 = __VERIFIER_nondet_int() [L564] COND FALSE !(\read(tmp___2)) [L568] tmp___1 = __VERIFIER_nondet_int() [L570] COND TRUE \read(tmp___1) [L572] CALL stopSystem() [L794] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L801] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L572] RET stopSystem() [L579] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L603] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L610] COND FALSE !(\read(systemActive)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L618] CALL __utac_acc__Specification3_spec__1() [L807] int tmp ; [L808] int tmp___0 ; [L809] int tmp___1 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L813] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] 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] [L813] 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] [L813] tmp = isMethaneLevelCritical() [L815] COND FALSE !(\read(tmp)) [L819] CALL, EXPR getWaterLevel() [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] 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] [L819] RET, EXPR getWaterLevel() [L819] tmp___0 = getWaterLevel() [L821] COND TRUE tmp___0 == 2 [L823] CALL, EXPR isPumpRunning() [L727] int retValue_acc ; [L730] retValue_acc = pumpRunning [L731] 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] [L823] RET, EXPR isPumpRunning() [L823] tmp___1 = isPumpRunning() [L825] COND FALSE !(\read(tmp___1)) [L829] CALL __automaton_fail() [L150] 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 10 procedures, 97 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 5, 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, 358 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 354 mSDsluCounter, 1166 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 706 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 145 IncrementalHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 460 mSDtfsCounter, 145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=352occurred in iteration=4, InterpolantAutomatonStates: 16, 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, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 215 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 11:36:47,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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