./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product01.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_product01.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 9e3cb2f788bd8b6aed266239a667d8aec45bc37eed8a60a4f1b6f4064a5672f5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:24:11,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:24:11,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:24:11,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:24:11,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:24:11,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:24:11,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:24:11,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:24:11,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:24:11,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:24:11,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:24:11,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:24:11,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:24:11,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:24:11,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:24:11,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:24:11,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:24:11,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:24:11,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:24:11,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:24:11,966 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:24:11,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:24:11,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:24:11,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:24:11,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:24:11,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:24:11,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:24:11,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:24:11,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:24:11,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:24:11,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:24:11,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:24:11,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:24:11,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:24:11,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:24:11,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:24:11,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:24:11,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:24:11,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:24:11,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:24:11,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:24:11,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:24:11,989 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:24:12,017 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:24:12,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:24:12,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:24:12,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:24:12,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:24:12,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:24:12,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:24:12,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:24:12,021 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:24:12,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:24:12,022 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:24:12,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:24:12,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:24:12,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:24:12,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:24:12,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:24:12,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:24:12,023 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:24:12,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:24:12,025 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:24:12,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:24:12,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:24:12,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:24:12,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:24:12,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:24:12,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:24:12,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:24:12,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:24:12,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:24:12,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:24:12,027 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:24:12,027 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:24:12,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:24:12,028 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e3cb2f788bd8b6aed266239a667d8aec45bc37eed8a60a4f1b6f4064a5672f5 [2022-07-19 17:24:12,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:24:12,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:24:12,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:24:12,295 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:24:12,296 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:24:12,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product01.cil.c [2022-07-19 17:24:12,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1096ce33/99e5bbb09bc8420baf8639f602472363/FLAGe55c0d8b8 [2022-07-19 17:24:12,802 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:24:12,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product01.cil.c [2022-07-19 17:24:12,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1096ce33/99e5bbb09bc8420baf8639f602472363/FLAGe55c0d8b8 [2022-07-19 17:24:13,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1096ce33/99e5bbb09bc8420baf8639f602472363 [2022-07-19 17:24:13,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:24:13,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:24:13,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:24:13,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:24:13,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:24:13,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:24:13" (1/1) ... [2022-07-19 17:24:13,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d2de958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:13, skipping insertion in model container [2022-07-19 17:24:13,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:24:13" (1/1) ... [2022-07-19 17:24:13,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:24:13,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:24:13,551 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_product01.cil.c[5053,5066] [2022-07-19 17:24:13,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:24:13,622 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:24:13,659 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_product01.cil.c[5053,5066] [2022-07-19 17:24:13,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:24:13,745 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:24:13,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:13 WrapperNode [2022-07-19 17:24:13,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:24:13,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:24:13,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:24:13,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:24:13,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:13" (1/1) ... [2022-07-19 17:24:13,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:13" (1/1) ... [2022-07-19 17:24:13,816 INFO L137 Inliner]: procedures = 49, calls = 145, calls flagged for inlining = 17, calls inlined = 14, statements flattened = 192 [2022-07-19 17:24:13,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:24:13,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:24:13,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:24:13,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:24:13,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:13" (1/1) ... [2022-07-19 17:24:13,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:13" (1/1) ... [2022-07-19 17:24:13,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:13" (1/1) ... [2022-07-19 17:24:13,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:13" (1/1) ... [2022-07-19 17:24:13,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:13" (1/1) ... [2022-07-19 17:24:13,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:13" (1/1) ... [2022-07-19 17:24:13,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:13" (1/1) ... [2022-07-19 17:24:13,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:24:13,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:24:13,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:24:13,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:24:13,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:13" (1/1) ... [2022-07-19 17:24:13,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:24:13,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:24:13,901 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) [2022-07-19 17:24:13,923 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 [2022-07-19 17:24:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:24:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-19 17:24:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-19 17:24:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-07-19 17:24:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-07-19 17:24:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-19 17:24:13,944 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-19 17:24:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-07-19 17:24:13,944 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-07-19 17:24:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:24:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-07-19 17:24:13,944 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-07-19 17:24:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:24:13,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:24:14,015 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:24:14,017 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:24:14,214 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:24:14,220 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:24:14,221 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 17:24:14,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:24:14 BoogieIcfgContainer [2022-07-19 17:24:14,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:24:14,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:24:14,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:24:14,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:24:14,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:24:13" (1/3) ... [2022-07-19 17:24:14,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d0ccb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:24:14, skipping insertion in model container [2022-07-19 17:24:14,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:13" (2/3) ... [2022-07-19 17:24:14,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d0ccb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:24:14, skipping insertion in model container [2022-07-19 17:24:14,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:24:14" (3/3) ... [2022-07-19 17:24:14,230 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product01.cil.c [2022-07-19 17:24:14,243 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:24:14,244 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:24:14,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:24:14,322 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2347a590, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2b4006c [2022-07-19 17:24:14,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:24:14,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 50 states have (on average 1.4) internal successors, (70), 54 states have internal predecessors, (70), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-19 17:24:14,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-19 17:24:14,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:24:14,352 INFO L195 NwaCegarLoop]: 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] [2022-07-19 17:24:14,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:24:14,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:24:14,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1448697422, now seen corresponding path program 1 times [2022-07-19 17:24:14,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:24:14,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953038966] [2022-07-19 17:24:14,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:24:14,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:24:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:14,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:24:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:14,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:24:14,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:24:14,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953038966] [2022-07-19 17:24:14,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953038966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:24:14,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:24:14,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 17:24:14,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021030130] [2022-07-19 17:24:14,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:24:14,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 17:24:14,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:24:14,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 17:24:14,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 17:24:14,601 INFO L87 Difference]: Start difference. First operand has 64 states, 50 states have (on average 1.4) internal successors, (70), 54 states have internal predecessors, (70), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) 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) [2022-07-19 17:24:14,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:24:14,625 INFO L93 Difference]: Finished difference Result 120 states and 163 transitions. [2022-07-19 17:24:14,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 17:24:14,628 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 [2022-07-19 17:24:14,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:24:14,635 INFO L225 Difference]: With dead ends: 120 [2022-07-19 17:24:14,635 INFO L226 Difference]: Without dead ends: 55 [2022-07-19 17:24:14,639 INFO L412 NwaCegarLoop]: 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 [2022-07-19 17:24:14,642 INFO L413 NwaCegarLoop]: 78 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, 78 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 [2022-07-19 17:24:14,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:24:14,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-07-19 17:24:14,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-07-19 17:24:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.302325581395349) internal successors, (56), 46 states have internal predecessors, (56), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 17:24:14,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2022-07-19 17:24:14,723 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 25 [2022-07-19 17:24:14,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:24:14,723 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2022-07-19 17:24:14,723 INFO L496 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) [2022-07-19 17:24:14,724 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2022-07-19 17:24:14,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-19 17:24:14,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:24:14,726 INFO L195 NwaCegarLoop]: 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] [2022-07-19 17:24:14,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 17:24:14,727 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:24:14,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:24:14,728 INFO L85 PathProgramCache]: Analyzing trace with hash -984719931, now seen corresponding path program 1 times [2022-07-19 17:24:14,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:24:14,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603802631] [2022-07-19 17:24:14,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:24:14,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:24:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:14,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:24:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:24:14,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:24:14,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603802631] [2022-07-19 17:24:14,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603802631] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:24:14,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:24:14,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:24:14,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302097903] [2022-07-19 17:24:14,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:24:14,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:24:14,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:24:14,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:24:14,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:24:14,823 INFO L87 Difference]: Start difference. First operand 55 states and 69 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) [2022-07-19 17:24:14,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:24:14,842 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2022-07-19 17:24:14,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:24:14,843 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 [2022-07-19 17:24:14,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:24:14,846 INFO L225 Difference]: With dead ends: 76 [2022-07-19 17:24:14,847 INFO L226 Difference]: Without dead ends: 46 [2022-07-19 17:24:14,851 INFO L412 NwaCegarLoop]: 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 [2022-07-19 17:24:14,853 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 12 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 96 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 [2022-07-19 17:24:14,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 96 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:24:14,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-19 17:24:14,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-07-19 17:24:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 40 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 17:24:14,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2022-07-19 17:24:14,870 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 26 [2022-07-19 17:24:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:24:14,871 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2022-07-19 17:24:14,872 INFO L496 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) [2022-07-19 17:24:14,873 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2022-07-19 17:24:14,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-19 17:24:14,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:24:14,875 INFO L195 NwaCegarLoop]: 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] [2022-07-19 17:24:14,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 17:24:14,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:24:14,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:24:14,878 INFO L85 PathProgramCache]: Analyzing trace with hash -99316685, now seen corresponding path program 1 times [2022-07-19 17:24:14,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:24:14,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887404888] [2022-07-19 17:24:14,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:24:14,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:24:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:14,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:24:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:14,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:24:14,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:24:14,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887404888] [2022-07-19 17:24:14,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887404888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:24:14,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:24:14,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:24:14,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333581439] [2022-07-19 17:24:14,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:24:14,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:24:14,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:24:14,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:24:14,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:24:14,966 INFO L87 Difference]: Start difference. First operand 46 states and 57 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) [2022-07-19 17:24:15,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:24:15,071 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-07-19 17:24:15,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:24:15,072 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 [2022-07-19 17:24:15,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:24:15,074 INFO L225 Difference]: With dead ends: 85 [2022-07-19 17:24:15,074 INFO L226 Difference]: Without dead ends: 46 [2022-07-19 17:24:15,075 INFO L412 NwaCegarLoop]: 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 [2022-07-19 17:24:15,077 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 117 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:24:15,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 17:24:15,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-19 17:24:15,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-07-19 17:24:15,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 40 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 17:24:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2022-07-19 17:24:15,093 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 30 [2022-07-19 17:24:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:24:15,093 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2022-07-19 17:24:15,094 INFO L496 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) [2022-07-19 17:24:15,094 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2022-07-19 17:24:15,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-19 17:24:15,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:24:15,096 INFO L195 NwaCegarLoop]: 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] [2022-07-19 17:24:15,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 17:24:15,096 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:24:15,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:24:15,097 INFO L85 PathProgramCache]: Analyzing trace with hash -323404170, now seen corresponding path program 1 times [2022-07-19 17:24:15,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:24:15,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083275795] [2022-07-19 17:24:15,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:24:15,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:24:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:15,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 17:24:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:24:15,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:24:15,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083275795] [2022-07-19 17:24:15,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083275795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:24:15,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:24:15,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:24:15,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161388854] [2022-07-19 17:24:15,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:24:15,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:24:15,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:24:15,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:24:15,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:24:15,183 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2022-07-19 17:24:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:24:15,222 INFO L93 Difference]: Finished difference Result 120 states and 154 transitions. [2022-07-19 17:24:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:24:15,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 31 [2022-07-19 17:24:15,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:24:15,226 INFO L225 Difference]: With dead ends: 120 [2022-07-19 17:24:15,227 INFO L226 Difference]: Without dead ends: 81 [2022-07-19 17:24:15,228 INFO L412 NwaCegarLoop]: 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 [2022-07-19 17:24:15,230 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 29 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:24:15,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 215 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:24:15,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-07-19 17:24:15,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2022-07-19 17:24:15,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 66 states have internal predecessors, (80), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-19 17:24:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2022-07-19 17:24:15,250 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 31 [2022-07-19 17:24:15,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:24:15,251 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2022-07-19 17:24:15,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2022-07-19 17:24:15,251 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2022-07-19 17:24:15,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-19 17:24:15,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:24:15,260 INFO L195 NwaCegarLoop]: 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] [2022-07-19 17:24:15,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 17:24:15,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:24:15,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:24:15,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1353533519, now seen corresponding path program 1 times [2022-07-19 17:24:15,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:24:15,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013738148] [2022-07-19 17:24:15,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:24:15,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:24:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:24:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:24:15,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:24:15,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013738148] [2022-07-19 17:24:15,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013738148] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:24:15,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:24:15,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:24:15,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493204176] [2022-07-19 17:24:15,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:24:15,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:24:15,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:24:15,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:24:15,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:24:15,353 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2022-07-19 17:24:15,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:24:15,370 INFO L93 Difference]: Finished difference Result 115 states and 144 transitions. [2022-07-19 17:24:15,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:24:15,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 33 [2022-07-19 17:24:15,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:24:15,374 INFO L225 Difference]: With dead ends: 115 [2022-07-19 17:24:15,374 INFO L226 Difference]: Without dead ends: 75 [2022-07-19 17:24:15,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:24:15,375 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:24:15,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 50 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:24:15,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-07-19 17:24:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-07-19 17:24:15,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 63 states have internal predecessors, (74), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 17:24:15,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2022-07-19 17:24:15,395 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 33 [2022-07-19 17:24:15,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:24:15,395 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2022-07-19 17:24:15,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2022-07-19 17:24:15,396 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2022-07-19 17:24:15,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-19 17:24:15,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:24:15,397 INFO L195 NwaCegarLoop]: 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] [2022-07-19 17:24:15,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 17:24:15,397 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:24:15,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:24:15,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1848884016, now seen corresponding path program 1 times [2022-07-19 17:24:15,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:24:15,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49904618] [2022-07-19 17:24:15,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:24:15,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:24:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 17:24:15,423 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 17:24:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 17:24:15,477 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 17:24:15,478 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 17:24:15,479 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 17:24:15,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:24:15,488 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-19 17:24:15,491 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 17:24:15,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 05:24:15 BoogieIcfgContainer [2022-07-19 17:24:15,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 17:24:15,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 17:24:15,537 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 17:24:15,537 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 17:24:15,538 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:24:14" (3/4) ... [2022-07-19 17:24:15,539 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-19 17:24:15,657 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 17:24:15,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 17:24:15,658 INFO L158 Benchmark]: Toolchain (without parser) took 2328.50ms. Allocated memory was 113.2MB in the beginning and 144.7MB in the end (delta: 31.5MB). Free memory was 77.1MB in the beginning and 116.0MB in the end (delta: -38.9MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. [2022-07-19 17:24:15,658 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 75.5MB. Free memory was 34.3MB in the beginning and 34.3MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 17:24:15,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.48ms. Allocated memory is still 113.2MB. Free memory was 76.9MB in the beginning and 79.0MB in the end (delta: -2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 17:24:15,659 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.92ms. Allocated memory is still 113.2MB. Free memory was 79.0MB in the beginning and 76.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 17:24:15,661 INFO L158 Benchmark]: Boogie Preprocessor took 44.51ms. Allocated memory is still 113.2MB. Free memory was 76.8MB in the beginning and 75.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 17:24:15,661 INFO L158 Benchmark]: RCFGBuilder took 360.00ms. Allocated memory is still 113.2MB. Free memory was 75.3MB in the beginning and 61.2MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 17:24:15,661 INFO L158 Benchmark]: TraceAbstraction took 1311.96ms. Allocated memory was 113.2MB in the beginning and 144.7MB in the end (delta: 31.5MB). Free memory was 60.6MB in the beginning and 63.4MB in the end (delta: -2.8MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2022-07-19 17:24:15,662 INFO L158 Benchmark]: Witness Printer took 120.36ms. Allocated memory is still 144.7MB. Free memory was 63.4MB in the beginning and 116.0MB in the end (delta: -52.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 17:24:15,663 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 75.5MB. Free memory was 34.3MB in the beginning and 34.3MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 415.48ms. Allocated memory is still 113.2MB. Free memory was 76.9MB in the beginning and 79.0MB in the end (delta: -2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.92ms. Allocated memory is still 113.2MB. Free memory was 79.0MB in the beginning and 76.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.51ms. Allocated memory is still 113.2MB. Free memory was 76.8MB in the beginning and 75.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 360.00ms. Allocated memory is still 113.2MB. Free memory was 75.3MB in the beginning and 61.2MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1311.96ms. Allocated memory was 113.2MB in the beginning and 144.7MB in the end (delta: 31.5MB). Free memory was 60.6MB in the beginning and 63.4MB in the end (delta: -2.8MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. * Witness Printer took 120.36ms. Allocated memory is still 144.7MB. Free memory was 63.4MB in the beginning and 116.0MB in the end (delta: -52.6MB). Peak memory consumption was 2.1MB. 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: 312]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L58] int pumpRunning = 0; [L59] int systemActive = 1; [L317] int cleanupTimeShifts = 4; [L413] int waterLevel = 1; [L414] int methaneLevelCritical = 0; [L662] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L390] int retValue_acc ; [L391] int tmp ; [L395] FCALL select_helpers() [L396] FCALL select_features() [L397] CALL, EXPR valid_product() [L263] int retValue_acc ; [L266] retValue_acc = 1 [L267] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L397] RET, EXPR valid_product() [L397] tmp = valid_product() [L399] COND TRUE \read(tmp) [L401] FCALL setup() [L402] CALL runTest() [L384] CALL test() [L170] int splverifierCounter ; [L171] int tmp ; [L172] int tmp___0 ; [L173] int tmp___1 ; [L174] int tmp___2 ; [L177] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L179] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L181] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L187] tmp = __VERIFIER_nondet_int() [L189] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L191] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L431] COND TRUE waterLevel < 2 [L432] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L191] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L197] tmp___0 = __VERIFIER_nondet_int() [L199] 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] [L207] tmp___2 = __VERIFIER_nondet_int() [L209] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L222] CALL timeShift() VAL [\old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L66] COND FALSE !(\read(pumpRunning)) VAL [\old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L73] COND TRUE \read(systemActive) [L75] FCALL processEnvironment() [L81] CALL __utac_acc__Specification3_spec__1() [L275] int tmp ; [L276] int tmp___0 ; [L277] int tmp___1 ; VAL [\old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L281] CALL, EXPR isMethaneLevelCritical() VAL [\old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); VAL [\old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L281] RET, EXPR isMethaneLevelCritical() VAL [\old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L281] tmp = isMethaneLevelCritical() [L283] COND FALSE !(\read(tmp)) [L287] CALL, EXPR getWaterLevel() [L484] int retValue_acc ; [L487] retValue_acc = waterLevel [L488] return (retValue_acc); VAL [\old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=2, systemActive=1, waterLevel=2] [L287] RET, EXPR getWaterLevel() [L287] tmp___0 = getWaterLevel() [L289] COND TRUE tmp___0 == 2 [L291] CALL, EXPR isPumpRunning() [L121] int retValue_acc ; [L124] retValue_acc = pumpRunning [L125] return (retValue_acc); VAL [\old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L291] RET, EXPR isPumpRunning() [L291] tmp___1 = isPumpRunning() [L293] COND FALSE !(\read(tmp___1)) [L297] CALL __automaton_fail() [L312] reach_error() VAL [\old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 197 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 194 mSDsluCounter, 547 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 255 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 292 mSDtfsCounter, 45 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=4, InterpolantAutomatonStates: 18, 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 272 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! [2022-07-19 17:24:15,691 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