./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product35.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_spec4_product35.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 ef69c83623105b68e3213a0f6e5530f40867a5bc091f925c8e4d647572a9cdfc --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:25:11,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:25:11,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:25:12,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:25:12,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:25:12,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:25:12,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:25:12,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:25:12,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:25:12,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:25:12,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:25:12,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:25:12,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:25:12,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:25:12,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:25:12,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:25:12,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:25:12,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:25:12,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:25:12,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:25:12,027 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:25:12,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:25:12,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:25:12,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:25:12,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:25:12,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:25:12,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:25:12,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:25:12,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:25:12,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:25:12,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:25:12,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:25:12,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:25:12,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:25:12,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:25:12,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:25:12,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:25:12,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:25:12,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:25:12,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:25:12,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:25:12,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:25:12,042 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:25:12,061 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:25:12,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:25:12,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:25:12,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:25:12,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:25:12,063 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:25:12,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:25:12,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:25:12,064 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:25:12,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:25:12,065 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:25:12,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:25:12,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:25:12,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:25:12,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:25:12,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:25:12,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:25:12,066 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:25:12,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:25:12,067 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:25:12,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:25:12,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:25:12,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:25:12,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:25:12,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:25:12,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:25:12,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:25:12,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:25:12,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:25:12,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:25:12,069 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:25:12,069 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:25:12,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:25:12,069 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef69c83623105b68e3213a0f6e5530f40867a5bc091f925c8e4d647572a9cdfc [2022-07-19 17:25:12,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:25:12,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:25:12,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:25:12,262 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:25:12,263 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:25:12,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2022-07-19 17:25:12,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09f446558/fa146a47084a424b846c355ee27c439a/FLAGcf4194791 [2022-07-19 17:25:12,745 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:25:12,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2022-07-19 17:25:12,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09f446558/fa146a47084a424b846c355ee27c439a/FLAGcf4194791 [2022-07-19 17:25:13,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09f446558/fa146a47084a424b846c355ee27c439a [2022-07-19 17:25:13,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:25:13,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:25:13,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:25:13,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:25:13,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:25:13,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:25:13" (1/1) ... [2022-07-19 17:25:13,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:25:13, skipping insertion in model container [2022-07-19 17:25:13,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:25:13" (1/1) ... [2022-07-19 17:25:13,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:25:13,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:25:13,378 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_spec4_product35.cil.c[16086,16099] [2022-07-19 17:25:13,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:25:13,403 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:25:13,459 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_spec4_product35.cil.c[16086,16099] [2022-07-19 17:25:13,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:25:13,473 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:25:13,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:25:13 WrapperNode [2022-07-19 17:25:13,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:25:13,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:25:13,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:25:13,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:25:13,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:25:13" (1/1) ... [2022-07-19 17:25:13,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:25:13" (1/1) ... [2022-07-19 17:25:13,506 INFO L137 Inliner]: procedures = 53, calls = 151, calls flagged for inlining = 23, calls inlined = 19, statements flattened = 230 [2022-07-19 17:25:13,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:25:13,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:25:13,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:25:13,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:25:13,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:25:13" (1/1) ... [2022-07-19 17:25:13,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:25:13" (1/1) ... [2022-07-19 17:25:13,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:25:13" (1/1) ... [2022-07-19 17:25:13,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:25:13" (1/1) ... [2022-07-19 17:25:13,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:25:13" (1/1) ... [2022-07-19 17:25:13,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:25:13" (1/1) ... [2022-07-19 17:25:13,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:25:13" (1/1) ... [2022-07-19 17:25:13,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:25:13,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:25:13,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:25:13,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:25:13,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:25:13" (1/1) ... [2022-07-19 17:25:13,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:25:13,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:25:13,575 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 17:25:13,581 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 17:25:13,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:25:13,600 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-07-19 17:25:13,601 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-07-19 17:25:13,601 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-19 17:25:13,601 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-19 17:25:13,601 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-19 17:25:13,601 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-19 17:25:13,602 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-07-19 17:25:13,602 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-07-19 17:25:13,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:25:13,602 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-07-19 17:25:13,602 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-07-19 17:25:13,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:25:13,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:25:13,661 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:25:13,662 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:25:13,831 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:25:13,836 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:25:13,836 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 17:25:13,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:25:13 BoogieIcfgContainer [2022-07-19 17:25:13,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:25:13,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:25:13,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:25:13,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:25:13,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:25:13" (1/3) ... [2022-07-19 17:25:13,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444b67f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:25:13, skipping insertion in model container [2022-07-19 17:25:13,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:25:13" (2/3) ... [2022-07-19 17:25:13,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444b67f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:25:13, skipping insertion in model container [2022-07-19 17:25:13,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:25:13" (3/3) ... [2022-07-19 17:25:13,862 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product35.cil.c [2022-07-19 17:25:13,872 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:25:13,872 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:25:13,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:25:13,934 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@1a7d78ca, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@235d9408 [2022-07-19 17:25:13,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:25:13,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 65 states have internal predecessors, (83), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 17:25:13,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 17:25:13,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:25:13,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:25:13,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:25:13,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:25:13,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1047467425, now seen corresponding path program 1 times [2022-07-19 17:25:13,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:25:13,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167574891] [2022-07-19 17:25:13,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:25:13,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:25:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:14,151 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 17:25:14,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:25:14,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167574891] [2022-07-19 17:25:14,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167574891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:25:14,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:25:14,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 17:25:14,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091530118] [2022-07-19 17:25:14,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:25:14,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 17:25:14,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:25:14,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 17:25:14,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 17:25:14,185 INFO L87 Difference]: Start difference. First operand has 74 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 65 states have internal predecessors, (83), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:25:14,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:25:14,216 INFO L93 Difference]: Finished difference Result 140 states and 193 transitions. [2022-07-19 17:25:14,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 17:25:14,218 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-19 17:25:14,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:25:14,224 INFO L225 Difference]: With dead ends: 140 [2022-07-19 17:25:14,224 INFO L226 Difference]: Without dead ends: 65 [2022-07-19 17:25:14,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 17:25:14,229 INFO L413 NwaCegarLoop]: 93 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, 93 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 17:25:14,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:25:14,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-07-19 17:25:14,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-07-19 17:25:14,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 57 states have internal predecessors, (69), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-19 17:25:14,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2022-07-19 17:25:14,270 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 19 [2022-07-19 17:25:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:25:14,270 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2022-07-19 17:25:14,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:25:14,271 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2022-07-19 17:25:14,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-19 17:25:14,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:25:14,274 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] [2022-07-19 17:25:14,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 17:25:14,275 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:25:14,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:25:14,276 INFO L85 PathProgramCache]: Analyzing trace with hash 526246002, now seen corresponding path program 1 times [2022-07-19 17:25:14,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:25:14,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316003694] [2022-07-19 17:25:14,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:25:14,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:25:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:14,325 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 17:25:14,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:25:14,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316003694] [2022-07-19 17:25:14,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316003694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:25:14,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:25:14,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:25:14,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091706092] [2022-07-19 17:25:14,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:25:14,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:25:14,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:25:14,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:25:14,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:25:14,327 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:25:14,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:25:14,341 INFO L93 Difference]: Finished difference Result 92 states and 119 transitions. [2022-07-19 17:25:14,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:25:14,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-19 17:25:14,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:25:14,342 INFO L225 Difference]: With dead ends: 92 [2022-07-19 17:25:14,342 INFO L226 Difference]: Without dead ends: 56 [2022-07-19 17:25:14,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:25:14,343 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 17 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 121 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 17:25:14,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 121 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:25:14,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-19 17:25:14,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-07-19 17:25:14,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 51 states have internal predecessors, (62), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-19 17:25:14,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2022-07-19 17:25:14,349 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 20 [2022-07-19 17:25:14,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:25:14,349 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2022-07-19 17:25:14,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:25:14,349 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2022-07-19 17:25:14,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 17:25:14,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:25:14,350 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] [2022-07-19 17:25:14,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 17:25:14,350 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:25:14,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:25:14,350 INFO L85 PathProgramCache]: Analyzing trace with hash 561787742, now seen corresponding path program 1 times [2022-07-19 17:25:14,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:25:14,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591641100] [2022-07-19 17:25:14,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:25:14,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:25:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:14,433 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 17:25:14,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:25:14,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591641100] [2022-07-19 17:25:14,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591641100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:25:14,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:25:14,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:25:14,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617635128] [2022-07-19 17:25:14,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:25:14,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:25:14,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:25:14,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:25:14,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:25:14,436 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:25:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:25:14,523 INFO L93 Difference]: Finished difference Result 188 states and 250 transitions. [2022-07-19 17:25:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:25:14,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-19 17:25:14,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:25:14,525 INFO L225 Difference]: With dead ends: 188 [2022-07-19 17:25:14,525 INFO L226 Difference]: Without dead ends: 139 [2022-07-19 17:25:14,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 17:25:14,527 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 199 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:25:14,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 346 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 17:25:14,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-07-19 17:25:14,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 129. [2022-07-19 17:25:14,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 115 states have internal predecessors, (144), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (14), 11 states have call predecessors, (14), 13 states have call successors, (14) [2022-07-19 17:25:14,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 171 transitions. [2022-07-19 17:25:14,542 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 171 transitions. Word has length 24 [2022-07-19 17:25:14,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:25:14,543 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 171 transitions. [2022-07-19 17:25:14,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:25:14,543 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 171 transitions. [2022-07-19 17:25:14,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-19 17:25:14,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:25:14,544 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] [2022-07-19 17:25:14,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 17:25:14,545 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:25:14,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:25:14,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2000985071, now seen corresponding path program 1 times [2022-07-19 17:25:14,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:25:14,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147466780] [2022-07-19 17:25:14,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:25:14,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:25:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:14,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:25:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:14,593 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 17:25:14,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:25:14,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147466780] [2022-07-19 17:25:14,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147466780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:25:14,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:25:14,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:25:14,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203929152] [2022-07-19 17:25:14,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:25:14,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:25:14,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:25:14,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:25:14,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:25:14,595 INFO L87 Difference]: Start difference. First operand 129 states and 171 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 17:25:14,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:25:14,638 INFO L93 Difference]: Finished difference Result 316 states and 428 transitions. [2022-07-19 17:25:14,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:25:14,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 29 [2022-07-19 17:25:14,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:25:14,640 INFO L225 Difference]: With dead ends: 316 [2022-07-19 17:25:14,640 INFO L226 Difference]: Without dead ends: 194 [2022-07-19 17:25:14,642 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 17:25:14,644 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 45 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:25:14,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 117 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:25:14,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-19 17:25:14,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2022-07-19 17:25:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 153 states have (on average 1.3529411764705883) internal successors, (207), 166 states have internal predecessors, (207), 19 states have call successors, (19), 19 states have call predecessors, (19), 19 states have return successors, (25), 19 states have call predecessors, (25), 19 states have call successors, (25) [2022-07-19 17:25:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 251 transitions. [2022-07-19 17:25:14,663 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 251 transitions. Word has length 29 [2022-07-19 17:25:14,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:25:14,663 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 251 transitions. [2022-07-19 17:25:14,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 17:25:14,663 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 251 transitions. [2022-07-19 17:25:14,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-19 17:25:14,664 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:25:14,664 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] [2022-07-19 17:25:14,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 17:25:14,665 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:25:14,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:25:14,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1499921389, now seen corresponding path program 1 times [2022-07-19 17:25:14,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:25:14,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785680322] [2022-07-19 17:25:14,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:25:14,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:25:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:14,729 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 17:25:14,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:25:14,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785680322] [2022-07-19 17:25:14,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785680322] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:25:14,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:25:14,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:25:14,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467812770] [2022-07-19 17:25:14,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:25:14,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:25:14,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:25:14,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:25:14,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:25:14,731 INFO L87 Difference]: Start difference. First operand 192 states and 251 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:25:14,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:25:14,860 INFO L93 Difference]: Finished difference Result 716 states and 1030 transitions. [2022-07-19 17:25:14,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:25:14,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-07-19 17:25:14,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:25:14,864 INFO L225 Difference]: With dead ends: 716 [2022-07-19 17:25:14,864 INFO L226 Difference]: Without dead ends: 531 [2022-07-19 17:25:14,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:25:14,867 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 152 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:25:14,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 450 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 17:25:14,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-07-19 17:25:14,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 506. [2022-07-19 17:25:14,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 405 states have (on average 1.3111111111111111) internal successors, (531), 435 states have internal predecessors, (531), 50 states have call successors, (50), 50 states have call predecessors, (50), 50 states have return successors, (95), 50 states have call predecessors, (95), 50 states have call successors, (95) [2022-07-19 17:25:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 676 transitions. [2022-07-19 17:25:14,906 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 676 transitions. Word has length 28 [2022-07-19 17:25:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:25:14,907 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 676 transitions. [2022-07-19 17:25:14,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:25:14,907 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 676 transitions. [2022-07-19 17:25:14,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-19 17:25:14,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:25:14,910 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:25:14,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 17:25:14,911 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:25:14,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:25:14,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1981025752, now seen corresponding path program 1 times [2022-07-19 17:25:14,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:25:14,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136278421] [2022-07-19 17:25:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:25:14,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:25:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:14,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 17:25:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 17:25:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:14,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:25:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:25:15,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:25:15,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136278421] [2022-07-19 17:25:15,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136278421] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:25:15,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247097533] [2022-07-19 17:25:15,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:25:15,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:25:15,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:25:15,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:25:15,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 17:25:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:15,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 17:25:15,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:25:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 17:25:15,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 17:25:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:25:15,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247097533] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 17:25:15,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 17:25:15,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 15 [2022-07-19 17:25:15,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404840562] [2022-07-19 17:25:15,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 17:25:15,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 17:25:15,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:25:15,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 17:25:15,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-19 17:25:15,348 INFO L87 Difference]: Start difference. First operand 506 states and 676 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 12 states have internal predecessors, (89), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 17:25:16,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:25:16,270 INFO L93 Difference]: Finished difference Result 1451 states and 1988 transitions. [2022-07-19 17:25:16,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-07-19 17:25:16,271 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 12 states have internal predecessors, (89), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 53 [2022-07-19 17:25:16,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:25:16,276 INFO L225 Difference]: With dead ends: 1451 [2022-07-19 17:25:16,276 INFO L226 Difference]: Without dead ends: 1103 [2022-07-19 17:25:16,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=598, Invalid=2372, Unknown=0, NotChecked=0, Total=2970 [2022-07-19 17:25:16,279 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 690 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:25:16,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1280 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 17:25:16,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2022-07-19 17:25:16,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 982. [2022-07-19 17:25:16,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 791 states have (on average 1.290771175726928) internal successors, (1021), 855 states have internal predecessors, (1021), 88 states have call successors, (88), 86 states have call predecessors, (88), 102 states have return successors, (180), 83 states have call predecessors, (180), 88 states have call successors, (180) [2022-07-19 17:25:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1289 transitions. [2022-07-19 17:25:16,325 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1289 transitions. Word has length 53 [2022-07-19 17:25:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:25:16,325 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1289 transitions. [2022-07-19 17:25:16,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 12 states have internal predecessors, (89), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 17:25:16,326 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1289 transitions. [2022-07-19 17:25:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-19 17:25:16,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:25:16,328 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 17:25:16,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 17:25:16,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-19 17:25:16,548 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:25:16,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:25:16,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1940053207, now seen corresponding path program 1 times [2022-07-19 17:25:16,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:25:16,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673841886] [2022-07-19 17:25:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:25:16,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:25:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:16,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:25:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:16,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:25:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:16,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 17:25:16,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:25:16,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673841886] [2022-07-19 17:25:16,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673841886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:25:16,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:25:16,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:25:16,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72626255] [2022-07-19 17:25:16,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:25:16,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:25:16,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:25:16,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:25:16,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:25:16,597 INFO L87 Difference]: Start difference. First operand 982 states and 1289 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:25:16,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:25:16,763 INFO L93 Difference]: Finished difference Result 2091 states and 2817 transitions. [2022-07-19 17:25:16,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:25:16,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 57 [2022-07-19 17:25:16,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:25:16,768 INFO L225 Difference]: With dead ends: 2091 [2022-07-19 17:25:16,768 INFO L226 Difference]: Without dead ends: 1116 [2022-07-19 17:25:16,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:25:16,772 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 142 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:25:16,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 368 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 17:25:16,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-07-19 17:25:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 982. [2022-07-19 17:25:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 791 states have (on average 1.2756005056890012) internal successors, (1009), 855 states have internal predecessors, (1009), 88 states have call successors, (88), 86 states have call predecessors, (88), 102 states have return successors, (180), 83 states have call predecessors, (180), 88 states have call successors, (180) [2022-07-19 17:25:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1277 transitions. [2022-07-19 17:25:16,820 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1277 transitions. Word has length 57 [2022-07-19 17:25:16,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:25:16,821 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1277 transitions. [2022-07-19 17:25:16,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:25:16,821 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1277 transitions. [2022-07-19 17:25:16,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-19 17:25:16,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:25:16,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 17:25:16,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:25:16,823 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:25:16,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:25:16,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1960547303, now seen corresponding path program 1 times [2022-07-19 17:25:16,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:25:16,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132272181] [2022-07-19 17:25:16,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:25:16,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:25:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:16,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:25:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:16,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:25:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 17:25:16,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:25:16,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132272181] [2022-07-19 17:25:16,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132272181] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:25:16,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:25:16,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:25:16,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599073787] [2022-07-19 17:25:16,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:25:16,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:25:16,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:25:16,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:25:16,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:25:16,863 INFO L87 Difference]: Start difference. First operand 982 states and 1277 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:25:16,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:25:16,990 INFO L93 Difference]: Finished difference Result 1901 states and 2519 transitions. [2022-07-19 17:25:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:25:16,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 57 [2022-07-19 17:25:16,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:25:16,994 INFO L225 Difference]: With dead ends: 1901 [2022-07-19 17:25:16,994 INFO L226 Difference]: Without dead ends: 926 [2022-07-19 17:25:16,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:25:16,998 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 107 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:25:16,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 310 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 17:25:16,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-07-19 17:25:17,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 892. [2022-07-19 17:25:17,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 717 states have (on average 1.2580195258019526) internal successors, (902), 767 states have internal predecessors, (902), 82 states have call successors, (82), 80 states have call predecessors, (82), 92 states have return successors, (151), 79 states have call predecessors, (151), 82 states have call successors, (151) [2022-07-19 17:25:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1135 transitions. [2022-07-19 17:25:17,032 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1135 transitions. Word has length 57 [2022-07-19 17:25:17,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:25:17,032 INFO L495 AbstractCegarLoop]: Abstraction has 892 states and 1135 transitions. [2022-07-19 17:25:17,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 17:25:17,033 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1135 transitions. [2022-07-19 17:25:17,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-19 17:25:17,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:25:17,034 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:25:17,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:25:17,034 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:25:17,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:25:17,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1821830511, now seen corresponding path program 1 times [2022-07-19 17:25:17,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:25:17,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513278031] [2022-07-19 17:25:17,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:25:17,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:25:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:17,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 17:25:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:17,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:25:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:17,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 17:25:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:25:17,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:25:17,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513278031] [2022-07-19 17:25:17,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513278031] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:25:17,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582523671] [2022-07-19 17:25:17,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:25:17,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:25:17,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:25:17,091 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:25:17,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 17:25:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:25:17,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 17:25:17,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:25:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:25:17,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 17:25:17,247 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:25:17,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582523671] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 17:25:17,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 17:25:17,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 10 [2022-07-19 17:25:17,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32009977] [2022-07-19 17:25:17,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 17:25:17,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:25:17,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:25:17,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:25:17,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:25:17,249 INFO L87 Difference]: Start difference. First operand 892 states and 1135 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 17:25:17,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:25:17,521 INFO L93 Difference]: Finished difference Result 1693 states and 2177 transitions. [2022-07-19 17:25:17,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 17:25:17,522 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 61 [2022-07-19 17:25:17,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:25:17,525 INFO L225 Difference]: With dead ends: 1693 [2022-07-19 17:25:17,525 INFO L226 Difference]: Without dead ends: 911 [2022-07-19 17:25:17,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2022-07-19 17:25:17,528 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 201 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:25:17,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 631 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 17:25:17,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2022-07-19 17:25:17,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 813. [2022-07-19 17:25:17,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 650 states have (on average 1.2338461538461538) internal successors, (802), 699 states have internal predecessors, (802), 76 states have call successors, (76), 74 states have call predecessors, (76), 86 states have return successors, (143), 68 states have call predecessors, (143), 76 states have call successors, (143) [2022-07-19 17:25:17,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1021 transitions. [2022-07-19 17:25:17,559 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1021 transitions. Word has length 61 [2022-07-19 17:25:17,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:25:17,560 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 1021 transitions. [2022-07-19 17:25:17,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 17:25:17,560 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1021 transitions. [2022-07-19 17:25:17,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-19 17:25:17,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:25:17,562 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 17:25:17,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 17:25:17,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-19 17:25:17,797 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:25:17,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:25:17,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1956651692, now seen corresponding path program 2 times [2022-07-19 17:25:17,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:25:17,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95365249] [2022-07-19 17:25:17,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:25:17,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:25:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 17:25:17,812 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 17:25:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 17:25:17,840 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 17:25:17,840 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 17:25:17,841 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 17:25:17,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 17:25:17,844 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:25:17,846 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 17:25:17,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 05:25:17 BoogieIcfgContainer [2022-07-19 17:25:17,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 17:25:17,885 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 17:25:17,885 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 17:25:17,885 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 17:25:17,885 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:25:13" (3/4) ... [2022-07-19 17:25:17,887 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-19 17:25:17,929 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 17:25:17,929 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 17:25:17,930 INFO L158 Benchmark]: Toolchain (without parser) took 4798.20ms. Allocated memory was 115.3MB in the beginning and 230.7MB in the end (delta: 115.3MB). Free memory was 85.3MB in the beginning and 98.0MB in the end (delta: -12.7MB). Peak memory consumption was 103.6MB. Max. memory is 16.1GB. [2022-07-19 17:25:17,930 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 17:25:17,930 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.47ms. Allocated memory is still 115.3MB. Free memory was 84.9MB in the beginning and 81.6MB in the end (delta: 3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 17:25:17,930 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.16ms. Allocated memory is still 115.3MB. Free memory was 81.6MB in the beginning and 79.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 17:25:17,931 INFO L158 Benchmark]: Boogie Preprocessor took 17.01ms. Allocated memory is still 115.3MB. Free memory was 79.2MB in the beginning and 77.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 17:25:17,931 INFO L158 Benchmark]: RCFGBuilder took 313.01ms. Allocated memory is still 115.3MB. Free memory was 77.8MB in the beginning and 62.8MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-19 17:25:17,931 INFO L158 Benchmark]: TraceAbstraction took 4045.14ms. Allocated memory was 115.3MB in the beginning and 230.7MB in the end (delta: 115.3MB). Free memory was 62.1MB in the beginning and 105.4MB in the end (delta: -43.2MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. [2022-07-19 17:25:17,931 INFO L158 Benchmark]: Witness Printer took 44.70ms. Allocated memory is still 230.7MB. Free memory was 105.4MB in the beginning and 98.0MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 17:25:17,932 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.47ms. Allocated memory is still 115.3MB. Free memory was 84.9MB in the beginning and 81.6MB in the end (delta: 3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.16ms. Allocated memory is still 115.3MB. Free memory was 81.6MB in the beginning and 79.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.01ms. Allocated memory is still 115.3MB. Free memory was 79.2MB in the beginning and 77.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 313.01ms. Allocated memory is still 115.3MB. Free memory was 77.8MB in the beginning and 62.8MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4045.14ms. Allocated memory was 115.3MB in the beginning and 230.7MB in the end (delta: 115.3MB). Free memory was 62.1MB in the beginning and 105.4MB in the end (delta: -43.2MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. * Witness Printer took 44.70ms. Allocated memory is still 230.7MB. Free memory was 105.4MB in the beginning and 98.0MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. 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: 794]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L158] int pumpRunning = 0; [L159] int systemActive = 1; [L325] int cleanupTimeShifts = 4; [L593] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L401] int retValue_acc ; [L402] int tmp ; [L406] FCALL select_helpers() [L407] FCALL select_features() [L408] CALL, EXPR valid_product() [L825] int retValue_acc ; [L828] retValue_acc = 1 [L829] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L408] RET, EXPR valid_product() [L408] tmp = valid_product() [L410] COND TRUE \read(tmp) [L412] FCALL setup() [L413] CALL runTest() [L392] CALL test() [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L65] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L67] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L73] tmp = __VERIFIER_nondet_int() [L75] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L77] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L77] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] 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] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] 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] [L110] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L172] COND TRUE \read(systemActive) [L174] CALL processEnvironment() [L194] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L197] COND TRUE ! pumpRunning [L199] CALL, EXPR isHighWaterLevel() [L291] int retValue_acc ; [L292] int tmp ; [L293] int tmp___0 ; [L297] CALL, EXPR isHighWaterSensorDry() [L914] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L917] COND FALSE !(waterLevel < 2) [L921] retValue_acc = 0 [L922] 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=1, waterLevel=2] [L297] RET, EXPR isHighWaterSensorDry() [L297] tmp = isHighWaterSensorDry() [L299] COND FALSE !(\read(tmp)) [L302] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L304] retValue_acc = tmp___0 [L305] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L199] RET, EXPR isHighWaterLevel() [L199] tmp = isHighWaterLevel() [L201] COND TRUE \read(tmp) [L203] CALL activatePump() [L222] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L203] RET activatePump() [L174] RET processEnvironment() [L180] CALL __utac_acc__Specification4_spec__1() [L126] int tmp ; [L127] int tmp___0 ; [L131] CALL, EXPR getWaterLevel() [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L131] RET, EXPR getWaterLevel() [L131] tmp = getWaterLevel() [L133] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L180] RET __utac_acc__Specification4_spec__1() [L110] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L65] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L67] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L73] tmp = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L110] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L165] COND TRUE \read(pumpRunning) [L167] CALL lowerWaterLevel() [L840] COND TRUE waterLevel > 0 [L841] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L167] RET lowerWaterLevel() [L172] COND TRUE \read(systemActive) [L174] CALL processEnvironment() [L194] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L197] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L212] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L174] RET processEnvironment() [L180] CALL __utac_acc__Specification4_spec__1() [L126] int tmp ; [L127] int tmp___0 ; [L131] CALL, EXPR getWaterLevel() [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L131] RET, EXPR getWaterLevel() [L131] tmp = getWaterLevel() [L133] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L180] RET __utac_acc__Specification4_spec__1() [L110] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L65] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L67] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L73] tmp = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L110] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] COND TRUE \read(pumpRunning) [L167] CALL lowerWaterLevel() [L840] COND TRUE waterLevel > 0 [L841] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L167] RET lowerWaterLevel() [L172] COND TRUE \read(systemActive) [L174] CALL processEnvironment() [L194] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L197] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L212] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L174] RET processEnvironment() [L180] CALL __utac_acc__Specification4_spec__1() [L126] int tmp ; [L127] int tmp___0 ; [L131] CALL, EXPR getWaterLevel() [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L131] RET, EXPR getWaterLevel() [L131] tmp = getWaterLevel() [L133] COND TRUE tmp == 0 [L135] CALL, EXPR isPumpRunning() [L246] int retValue_acc ; [L249] retValue_acc = pumpRunning [L250] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L135] RET, EXPR isPumpRunning() [L135] tmp___0 = isPumpRunning() [L137] COND TRUE \read(tmp___0) [L139] CALL __automaton_fail() [L794] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1572 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1553 mSDsluCounter, 3716 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2849 mSDsCounter, 292 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1559 IncrementalHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 292 mSolverCounterUnsat, 867 mSDtfsCounter, 1559 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 373 GetRequests, 254 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=982occurred in iteration=6, InterpolantAutomatonStates: 114, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 424 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 547 NumberOfCodeBlocks, 547 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 563 ConstructedInterpolants, 0 QuantifiedInterpolants, 1265 SizeOfPredicates, 4 NumberOfNonLiveVariables, 742 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 115/134 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 17:25:17,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE