./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_product40.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 77b56c936ee2ca54668f40aefbb58be12afe7e576f3b6d14c65eab965872c215 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:59:59,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:59:59,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:59:59,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:59:59,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:59:59,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:59:59,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:59:59,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:59:59,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:59:59,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:59:59,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:59:59,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:59:59,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:59:59,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:59:59,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:59:59,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:59:59,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:59:59,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:59:59,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:59:59,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:59:59,706 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:59:59,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:59:59,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:59:59,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:59:59,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:59:59,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:59:59,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:59:59,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:59:59,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:59:59,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:59:59,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:59:59,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:59:59,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:59:59,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:59:59,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:59:59,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:59:59,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:59:59,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:59:59,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:59:59,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:59:59,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:59:59,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:59:59,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:59:59,747 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:59:59,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:59:59,747 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:59:59,747 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:59:59,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:59:59,748 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:59:59,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:59:59,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:59:59,748 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:59:59,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:59:59,748 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:59:59,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:59:59,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:59:59,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:59:59,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:59:59,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:59:59,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:59:59,749 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:59:59,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:59:59,749 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:59:59,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:59:59,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:59:59,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:59:59,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:59:59,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:59:59,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:59:59,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:59:59,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:59:59,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:59:59,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:59:59,750 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:59:59,750 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:59:59,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:59:59,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77b56c936ee2ca54668f40aefbb58be12afe7e576f3b6d14c65eab965872c215 [2022-07-13 17:59:59,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:59:59,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:59:59,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:59:59,976 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:59:59,977 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:59:59,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2022-07-13 18:00:00,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b36ca99c/9dfc6a0d8d054cadb4eb81b6a6ba7cbf/FLAGe5c8a4fc4 [2022-07-13 18:00:00,456 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:00:00,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2022-07-13 18:00:00,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b36ca99c/9dfc6a0d8d054cadb4eb81b6a6ba7cbf/FLAGe5c8a4fc4 [2022-07-13 18:00:00,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b36ca99c/9dfc6a0d8d054cadb4eb81b6a6ba7cbf [2022-07-13 18:00:00,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:00:00,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:00:00,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:00:00,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:00:00,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:00:00,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:00:00" (1/1) ... [2022-07-13 18:00:00,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@483b3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:00, skipping insertion in model container [2022-07-13 18:00:00,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:00:00" (1/1) ... [2022-07-13 18:00:00,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:00:00,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:00:00,727 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_product40.cil.c[5400,5413] [2022-07-13 18:00:00,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:00:00,794 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:00:00,820 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_product40.cil.c[5400,5413] [2022-07-13 18:00:00,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:00:00,885 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:00:00,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:00 WrapperNode [2022-07-13 18:00:00,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:00:00,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:00:00,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:00:00,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:00:00,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:00" (1/1) ... [2022-07-13 18:00:00,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:00" (1/1) ... [2022-07-13 18:00:00,942 INFO L137 Inliner]: procedures = 55, calls = 156, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 257 [2022-07-13 18:00:00,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:00:00,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:00:00,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:00:00,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:00:00,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:00" (1/1) ... [2022-07-13 18:00:00,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:00" (1/1) ... [2022-07-13 18:00:00,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:00" (1/1) ... [2022-07-13 18:00:00,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:00" (1/1) ... [2022-07-13 18:00:00,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:00" (1/1) ... [2022-07-13 18:00:00,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:00" (1/1) ... [2022-07-13 18:00:00,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:00" (1/1) ... [2022-07-13 18:00:00,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:00:00,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:00:00,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:00:00,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:00:00,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:00" (1/1) ... [2022-07-13 18:00:00,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:00:01,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:00:01,011 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) [2022-07-13 18:00:01,035 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 [2022-07-13 18:00:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:00:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-07-13 18:00:01,058 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-07-13 18:00:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-13 18:00:01,058 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-13 18:00:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-13 18:00:01,058 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-13 18:00:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-07-13 18:00:01,059 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-07-13 18:00:01,059 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-07-13 18:00:01,059 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-07-13 18:00:01,059 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-07-13 18:00:01,059 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-07-13 18:00:01,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:00:01,059 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-07-13 18:00:01,059 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-07-13 18:00:01,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:00:01,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:00:01,122 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:00:01,123 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:00:01,368 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:00:01,373 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:00:01,373 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 18:00:01,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:00:01 BoogieIcfgContainer [2022-07-13 18:00:01,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:00:01,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:00:01,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:00:01,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:00:01,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:00:00" (1/3) ... [2022-07-13 18:00:01,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6a88fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:00:01, skipping insertion in model container [2022-07-13 18:00:01,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:00" (2/3) ... [2022-07-13 18:00:01,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6a88fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:00:01, skipping insertion in model container [2022-07-13 18:00:01,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:00:01" (3/3) ... [2022-07-13 18:00:01,381 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2022-07-13 18:00:01,391 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:00:01,392 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:00:01,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:00:01,438 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@3a747e7f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@38c39654 [2022-07-13 18:00:01,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:00:01,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 76 states have internal predecessors, (93), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-13 18:00:01,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 18:00:01,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:01,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:00:01,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:01,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:01,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1180075740, now seen corresponding path program 1 times [2022-07-13 18:00:01,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:01,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154707087] [2022-07-13 18:00:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:01,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:01,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:01,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154707087] [2022-07-13 18:00:01,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154707087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:01,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:01,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 18:00:01,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159636405] [2022-07-13 18:00:01,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:01,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 18:00:01,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:01,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 18:00:01,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 18:00:01,659 INFO L87 Difference]: Start difference. First operand has 88 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 76 states have internal predecessors, (93), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) 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) [2022-07-13 18:00:01,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:01,696 INFO L93 Difference]: Finished difference Result 168 states and 229 transitions. [2022-07-13 18:00:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 18:00:01,698 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 [2022-07-13 18:00:01,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:01,705 INFO L225 Difference]: With dead ends: 168 [2022-07-13 18:00:01,708 INFO L226 Difference]: Without dead ends: 79 [2022-07-13 18:00:01,712 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 [2022-07-13 18:00:01,715 INFO L413 NwaCegarLoop]: 111 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, 111 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 [2022-07-13 18:00:01,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:00:01,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-13 18:00:01,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-07-13 18:00:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 68 states have internal predecessors, (79), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-13 18:00:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2022-07-13 18:00:01,746 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 19 [2022-07-13 18:00:01,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:01,746 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2022-07-13 18:00:01,746 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) [2022-07-13 18:00:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2022-07-13 18:00:01,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-13 18:00:01,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:01,749 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] [2022-07-13 18:00:01,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:00:01,749 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:01,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:01,750 INFO L85 PathProgramCache]: Analyzing trace with hash 595736866, now seen corresponding path program 1 times [2022-07-13 18:00:01,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:01,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132164952] [2022-07-13 18:00:01,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:01,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:01,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:01,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132164952] [2022-07-13 18:00:01,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132164952] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:01,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:01,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:00:01,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964877807] [2022-07-13 18:00:01,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:01,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:00:01,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:01,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:00:01,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:00:01,806 INFO L87 Difference]: Start difference. First operand 79 states and 102 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) [2022-07-13 18:00:01,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:01,817 INFO L93 Difference]: Finished difference Result 119 states and 153 transitions. [2022-07-13 18:00:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:00:01,818 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 [2022-07-13 18:00:01,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:01,819 INFO L225 Difference]: With dead ends: 119 [2022-07-13 18:00:01,819 INFO L226 Difference]: Without dead ends: 70 [2022-07-13 18:00:01,820 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 [2022-07-13 18:00:01,821 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 17 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 156 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 [2022-07-13 18:00:01,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 156 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:00:01,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-13 18:00:01,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-07-13 18:00:01,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 62 states have internal predecessors, (72), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-13 18:00:01,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2022-07-13 18:00:01,835 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 20 [2022-07-13 18:00:01,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:01,835 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2022-07-13 18:00:01,836 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) [2022-07-13 18:00:01,836 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2022-07-13 18:00:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-13 18:00:01,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:01,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:00:01,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:00:01,841 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:01,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:01,842 INFO L85 PathProgramCache]: Analyzing trace with hash 369626779, now seen corresponding path program 1 times [2022-07-13 18:00:01,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:01,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171291372] [2022-07-13 18:00:01,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:01,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:01,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:01,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:01,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171291372] [2022-07-13 18:00:01,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171291372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:01,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:01,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:00:01,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105588112] [2022-07-13 18:00:01,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:01,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:00:01,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:01,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:00:01,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:00:01,919 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2022-07-13 18:00:02,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:02,018 INFO L93 Difference]: Finished difference Result 171 states and 224 transitions. [2022-07-13 18:00:02,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 18:00:02,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 25 [2022-07-13 18:00:02,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:02,038 INFO L225 Difference]: With dead ends: 171 [2022-07-13 18:00:02,038 INFO L226 Difference]: Without dead ends: 108 [2022-07-13 18:00:02,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:00:02,040 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 153 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:02,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 290 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:00:02,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-07-13 18:00:02,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2022-07-13 18:00:02,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 92 states have internal predecessors, (110), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (14), 9 states have call predecessors, (14), 13 states have call successors, (14) [2022-07-13 18:00:02,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 137 transitions. [2022-07-13 18:00:02,057 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 137 transitions. Word has length 25 [2022-07-13 18:00:02,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:02,057 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 137 transitions. [2022-07-13 18:00:02,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2022-07-13 18:00:02,057 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 137 transitions. [2022-07-13 18:00:02,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-13 18:00:02,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:02,058 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] [2022-07-13 18:00:02,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:00:02,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:02,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:02,059 INFO L85 PathProgramCache]: Analyzing trace with hash 779702988, now seen corresponding path program 1 times [2022-07-13 18:00:02,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:02,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277966211] [2022-07-13 18:00:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:02,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:02,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:02,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277966211] [2022-07-13 18:00:02,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277966211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:02,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:02,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:00:02,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134255410] [2022-07-13 18:00:02,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:02,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:00:02,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:02,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:00:02,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:00:02,133 INFO L87 Difference]: Start difference. First operand 105 states and 137 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 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) [2022-07-13 18:00:02,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:02,197 INFO L93 Difference]: Finished difference Result 289 states and 396 transitions. [2022-07-13 18:00:02,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:00:02,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 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 [2022-07-13 18:00:02,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:02,200 INFO L225 Difference]: With dead ends: 289 [2022-07-13 18:00:02,200 INFO L226 Difference]: Without dead ends: 191 [2022-07-13 18:00:02,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:00:02,202 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 61 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:02,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 357 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:00:02,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-13 18:00:02,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2022-07-13 18:00:02,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 146 states have (on average 1.3356164383561644) internal successors, (195), 165 states have internal predecessors, (195), 26 states have call successors, (26), 20 states have call predecessors, (26), 18 states have return successors, (31), 16 states have call predecessors, (31), 26 states have call successors, (31) [2022-07-13 18:00:02,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 252 transitions. [2022-07-13 18:00:02,223 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 252 transitions. Word has length 28 [2022-07-13 18:00:02,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:02,223 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 252 transitions. [2022-07-13 18:00:02,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 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) [2022-07-13 18:00:02,223 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 252 transitions. [2022-07-13 18:00:02,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 18:00:02,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:02,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:00:02,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:00:02,226 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:02,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:02,226 INFO L85 PathProgramCache]: Analyzing trace with hash -926135279, now seen corresponding path program 1 times [2022-07-13 18:00:02,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:02,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693322886] [2022-07-13 18:00:02,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:02,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:02,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:02,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693322886] [2022-07-13 18:00:02,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693322886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:02,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:02,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 18:00:02,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735753275] [2022-07-13 18:00:02,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:02,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:00:02,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:02,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:00:02,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:00:02,297 INFO L87 Difference]: Start difference. First operand 191 states and 252 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2022-07-13 18:00:02,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:02,360 INFO L93 Difference]: Finished difference Result 426 states and 580 transitions. [2022-07-13 18:00:02,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:00:02,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 30 [2022-07-13 18:00:02,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:02,362 INFO L225 Difference]: With dead ends: 426 [2022-07-13 18:00:02,362 INFO L226 Difference]: Without dead ends: 242 [2022-07-13 18:00:02,364 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 [2022-07-13 18:00:02,365 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 52 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:02,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 149 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:00:02,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-07-13 18:00:02,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 238. [2022-07-13 18:00:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 186 states have (on average 1.2903225806451613) internal successors, (240), 200 states have internal predecessors, (240), 27 states have call successors, (27), 26 states have call predecessors, (27), 24 states have return successors, (40), 24 states have call predecessors, (40), 27 states have call successors, (40) [2022-07-13 18:00:02,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 307 transitions. [2022-07-13 18:00:02,395 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 307 transitions. Word has length 30 [2022-07-13 18:00:02,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:02,395 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 307 transitions. [2022-07-13 18:00:02,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2022-07-13 18:00:02,395 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 307 transitions. [2022-07-13 18:00:02,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-13 18:00:02,396 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:02,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:00:02,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:00:02,396 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:02,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:02,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1951241998, now seen corresponding path program 1 times [2022-07-13 18:00:02,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:02,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546666178] [2022-07-13 18:00:02,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:02,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:02,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 18:00:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:02,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:02,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546666178] [2022-07-13 18:00:02,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546666178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:02,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:02,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:00:02,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598866025] [2022-07-13 18:00:02,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:02,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:00:02,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:02,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:00:02,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:00:02,485 INFO L87 Difference]: Start difference. First operand 238 states and 307 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 18:00:02,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:02,665 INFO L93 Difference]: Finished difference Result 290 states and 374 transitions. [2022-07-13 18:00:02,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 18:00:02,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-07-13 18:00:02,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:02,673 INFO L225 Difference]: With dead ends: 290 [2022-07-13 18:00:02,674 INFO L226 Difference]: Without dead ends: 288 [2022-07-13 18:00:02,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:00:02,682 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 122 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:02,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 354 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:00:02,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-07-13 18:00:02,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 271. [2022-07-13 18:00:02,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 211 states have (on average 1.2701421800947867) internal successors, (268), 231 states have internal predecessors, (268), 30 states have call successors, (30), 26 states have call predecessors, (30), 29 states have return successors, (50), 26 states have call predecessors, (50), 30 states have call successors, (50) [2022-07-13 18:00:02,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 348 transitions. [2022-07-13 18:00:02,705 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 348 transitions. Word has length 32 [2022-07-13 18:00:02,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:02,705 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 348 transitions. [2022-07-13 18:00:02,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 18:00:02,705 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 348 transitions. [2022-07-13 18:00:02,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-13 18:00:02,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:02,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:00:02,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:00:02,707 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:02,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:02,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1509571819, now seen corresponding path program 1 times [2022-07-13 18:00:02,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:02,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365048493] [2022-07-13 18:00:02,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:02,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:02,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 18:00:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:02,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 18:00:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:02,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:02,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:02,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365048493] [2022-07-13 18:00:02,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365048493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:02,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:02,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:00:02,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966899568] [2022-07-13 18:00:02,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:02,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:00:02,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:02,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:00:02,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:00:02,777 INFO L87 Difference]: Start difference. First operand 271 states and 348 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 18:00:02,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:02,935 INFO L93 Difference]: Finished difference Result 583 states and 743 transitions. [2022-07-13 18:00:02,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 18:00:02,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2022-07-13 18:00:02,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:02,938 INFO L225 Difference]: With dead ends: 583 [2022-07-13 18:00:02,938 INFO L226 Difference]: Without dead ends: 319 [2022-07-13 18:00:02,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:00:02,942 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 145 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:02,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 277 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:00:02,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-07-13 18:00:02,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 291. [2022-07-13 18:00:02,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 228 states have (on average 1.2543859649122806) internal successors, (286), 248 states have internal predecessors, (286), 30 states have call successors, (30), 26 states have call predecessors, (30), 32 states have return successors, (50), 28 states have call predecessors, (50), 30 states have call successors, (50) [2022-07-13 18:00:02,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions. [2022-07-13 18:00:02,969 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 46 [2022-07-13 18:00:02,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:02,971 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions. [2022-07-13 18:00:02,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 18:00:02,971 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions. [2022-07-13 18:00:02,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 18:00:02,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:02,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:00:02,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:00:02,977 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:02,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:02,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1923842840, now seen corresponding path program 1 times [2022-07-13 18:00:02,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:02,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002516101] [2022-07-13 18:00:02,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:02,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:03,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 18:00:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:03,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 18:00:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:03,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:03,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002516101] [2022-07-13 18:00:03,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002516101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:03,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:03,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:00:03,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120015378] [2022-07-13 18:00:03,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:03,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:00:03,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:03,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:00:03,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:00:03,034 INFO L87 Difference]: Start difference. First operand 291 states and 366 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:00:03,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:03,190 INFO L93 Difference]: Finished difference Result 611 states and 781 transitions. [2022-07-13 18:00:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:00:03,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-07-13 18:00:03,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:03,192 INFO L225 Difference]: With dead ends: 611 [2022-07-13 18:00:03,192 INFO L226 Difference]: Without dead ends: 327 [2022-07-13 18:00:03,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:00:03,194 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 123 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:03,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 337 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:00:03,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-07-13 18:00:03,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 297. [2022-07-13 18:00:03,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 234 states have (on average 1.2478632478632479) internal successors, (292), 254 states have internal predecessors, (292), 30 states have call successors, (30), 26 states have call predecessors, (30), 32 states have return successors, (50), 28 states have call predecessors, (50), 30 states have call successors, (50) [2022-07-13 18:00:03,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 372 transitions. [2022-07-13 18:00:03,205 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 372 transitions. Word has length 43 [2022-07-13 18:00:03,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:03,206 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 372 transitions. [2022-07-13 18:00:03,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:00:03,206 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 372 transitions. [2022-07-13 18:00:03,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 18:00:03,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:03,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:00:03,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:00:03,207 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:03,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:03,207 INFO L85 PathProgramCache]: Analyzing trace with hash 912725590, now seen corresponding path program 1 times [2022-07-13 18:00:03,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:03,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235712906] [2022-07-13 18:00:03,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:03,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:03,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 18:00:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:03,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 18:00:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:03,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:03,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235712906] [2022-07-13 18:00:03,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235712906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:03,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:03,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:00:03,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298984285] [2022-07-13 18:00:03,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:03,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:00:03,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:03,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:00:03,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:00:03,258 INFO L87 Difference]: Start difference. First operand 297 states and 372 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:00:03,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:03,443 INFO L93 Difference]: Finished difference Result 582 states and 742 transitions. [2022-07-13 18:00:03,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:00:03,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-07-13 18:00:03,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:03,444 INFO L225 Difference]: With dead ends: 582 [2022-07-13 18:00:03,444 INFO L226 Difference]: Without dead ends: 292 [2022-07-13 18:00:03,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:00:03,445 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 172 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:03,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 327 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:00:03,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-07-13 18:00:03,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 241. [2022-07-13 18:00:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 190 states have (on average 1.2421052631578948) internal successors, (236), 206 states have internal predecessors, (236), 25 states have call successors, (25), 22 states have call predecessors, (25), 25 states have return successors, (37), 22 states have call predecessors, (37), 25 states have call successors, (37) [2022-07-13 18:00:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 298 transitions. [2022-07-13 18:00:03,455 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 298 transitions. Word has length 43 [2022-07-13 18:00:03,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:03,456 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 298 transitions. [2022-07-13 18:00:03,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:00:03,456 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 298 transitions. [2022-07-13 18:00:03,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 18:00:03,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:03,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:00:03,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:00:03,457 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:03,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:03,457 INFO L85 PathProgramCache]: Analyzing trace with hash -108342764, now seen corresponding path program 1 times [2022-07-13 18:00:03,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:03,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669056421] [2022-07-13 18:00:03,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:03,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:03,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 18:00:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:03,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 18:00:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:03,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:03,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669056421] [2022-07-13 18:00:03,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669056421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:03,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:03,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:00:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082344205] [2022-07-13 18:00:03,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:03,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:00:03,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:03,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:00:03,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:00:03,502 INFO L87 Difference]: Start difference. First operand 241 states and 298 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:00:03,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:03,768 INFO L93 Difference]: Finished difference Result 541 states and 707 transitions. [2022-07-13 18:00:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 18:00:03,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-07-13 18:00:03,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:03,770 INFO L225 Difference]: With dead ends: 541 [2022-07-13 18:00:03,770 INFO L226 Difference]: Without dead ends: 375 [2022-07-13 18:00:03,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-07-13 18:00:03,772 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 191 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:03,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 462 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:00:03,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-07-13 18:00:03,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 364. [2022-07-13 18:00:03,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 287 states have (on average 1.2229965156794425) internal successors, (351), 308 states have internal predecessors, (351), 38 states have call successors, (38), 34 states have call predecessors, (38), 38 states have return successors, (68), 38 states have call predecessors, (68), 38 states have call successors, (68) [2022-07-13 18:00:03,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 457 transitions. [2022-07-13 18:00:03,787 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 457 transitions. Word has length 43 [2022-07-13 18:00:03,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:03,787 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 457 transitions. [2022-07-13 18:00:03,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:00:03,787 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 457 transitions. [2022-07-13 18:00:03,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-13 18:00:03,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:03,789 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:00:03,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:00:03,789 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:03,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:03,790 INFO L85 PathProgramCache]: Analyzing trace with hash 2046496720, now seen corresponding path program 1 times [2022-07-13 18:00:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:03,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192134146] [2022-07-13 18:00:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:03,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 18:00:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:03,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:00:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:03,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:00:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:03,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 18:00:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:03,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:00:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 18:00:03,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:03,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192134146] [2022-07-13 18:00:03,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192134146] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:00:03,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484146680] [2022-07-13 18:00:03,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:03,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:00:03,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:00:03,893 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) [2022-07-13 18:00:03,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 18:00:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:03,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 18:00:04,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:00:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:04,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:00:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 18:00:04,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484146680] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:00:04,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:00:04,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 9 [2022-07-13 18:00:04,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411143851] [2022-07-13 18:00:04,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:00:04,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:00:04,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:04,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:00:04,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:00:04,156 INFO L87 Difference]: Start difference. First operand 364 states and 457 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 18:00:04,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:04,620 INFO L93 Difference]: Finished difference Result 862 states and 1137 transitions. [2022-07-13 18:00:04,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-13 18:00:04,620 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 76 [2022-07-13 18:00:04,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:04,623 INFO L225 Difference]: With dead ends: 862 [2022-07-13 18:00:04,623 INFO L226 Difference]: Without dead ends: 573 [2022-07-13 18:00:04,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 163 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=227, Invalid=585, Unknown=0, NotChecked=0, Total=812 [2022-07-13 18:00:04,625 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 246 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:04,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 604 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:00:04,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-07-13 18:00:04,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 492. [2022-07-13 18:00:04,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 384 states have (on average 1.2291666666666667) internal successors, (472), 414 states have internal predecessors, (472), 54 states have call successors, (54), 48 states have call predecessors, (54), 53 states have return successors, (102), 50 states have call predecessors, (102), 54 states have call successors, (102) [2022-07-13 18:00:04,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 628 transitions. [2022-07-13 18:00:04,645 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 628 transitions. Word has length 76 [2022-07-13 18:00:04,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:04,645 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 628 transitions. [2022-07-13 18:00:04,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 18:00:04,646 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 628 transitions. [2022-07-13 18:00:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 18:00:04,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:04,647 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:00:04,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 18:00:04,887 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,SelfDestructingSolverStorable10 [2022-07-13 18:00:04,887 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:04,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:04,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1016756628, now seen corresponding path program 2 times [2022-07-13 18:00:04,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:04,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318349556] [2022-07-13 18:00:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:04,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 18:00:04,902 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 18:00:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 18:00:04,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 18:00:04,938 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 18:00:04,938 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 18:00:04,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:00:04,941 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:00:04,943 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 18:00:05,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 06:00:05 BoogieIcfgContainer [2022-07-13 18:00:05,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 18:00:05,001 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 18:00:05,001 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 18:00:05,001 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 18:00:05,001 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:00:01" (3/4) ... [2022-07-13 18:00:05,002 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-13 18:00:05,052 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 18:00:05,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 18:00:05,053 INFO L158 Benchmark]: Toolchain (without parser) took 4567.21ms. Allocated memory was 104.9MB in the beginning and 182.5MB in the end (delta: 77.6MB). Free memory was 74.7MB in the beginning and 143.7MB in the end (delta: -68.9MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2022-07-13 18:00:05,053 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 61.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 18:00:05,053 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.96ms. Allocated memory is still 104.9MB. Free memory was 74.7MB in the beginning and 71.4MB in the end (delta: 3.3MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2022-07-13 18:00:05,053 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.75ms. Allocated memory is still 104.9MB. Free memory was 71.4MB in the beginning and 68.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 18:00:05,053 INFO L158 Benchmark]: Boogie Preprocessor took 38.56ms. Allocated memory is still 104.9MB. Free memory was 68.9MB in the beginning and 67.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 18:00:05,054 INFO L158 Benchmark]: RCFGBuilder took 390.19ms. Allocated memory is still 104.9MB. Free memory was 67.6MB in the beginning and 51.0MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-13 18:00:05,054 INFO L158 Benchmark]: TraceAbstraction took 3623.43ms. Allocated memory was 104.9MB in the beginning and 182.5MB in the end (delta: 77.6MB). Free memory was 50.5MB in the beginning and 152.2MB in the end (delta: -101.7MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. [2022-07-13 18:00:05,054 INFO L158 Benchmark]: Witness Printer took 51.85ms. Allocated memory is still 182.5MB. Free memory was 152.2MB in the beginning and 143.7MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 18:00:05,055 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 61.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.96ms. Allocated memory is still 104.9MB. Free memory was 74.7MB in the beginning and 71.4MB in the end (delta: 3.3MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.75ms. Allocated memory is still 104.9MB. Free memory was 71.4MB in the beginning and 68.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.56ms. Allocated memory is still 104.9MB. Free memory was 68.9MB in the beginning and 67.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 390.19ms. Allocated memory is still 104.9MB. Free memory was 67.6MB in the beginning and 51.0MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3623.43ms. Allocated memory was 104.9MB in the beginning and 182.5MB in the end (delta: 77.6MB). Free memory was 50.5MB in the beginning and 152.2MB in the end (delta: -101.7MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. * Witness Printer took 51.85ms. Allocated memory is still 182.5MB. Free memory was 152.2MB in the beginning and 143.7MB in the end (delta: 8.5MB). 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: 339]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L133] int pumpRunning = 0; [L134] int systemActive = 1; [L344] int cleanupTimeShifts = 4; [L444] int waterLevel = 1; [L445] int methaneLevelCritical = 0; [L707] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L420] int retValue_acc ; [L421] int tmp ; [L425] FCALL select_helpers() [L426] FCALL select_features() [L427] CALL, EXPR valid_product() [L956] int retValue_acc ; [L959] retValue_acc = 1 [L960] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L427] RET, EXPR valid_product() [L427] tmp = valid_product() [L429] COND TRUE \read(tmp) [L431] FCALL setup() [L432] CALL runTest() [L411] CALL test() [L57] int splverifierCounter ; [L58] int tmp ; [L59] int tmp___0 ; [L60] int tmp___1 ; [L61] int tmp___2 ; [L64] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L66] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L68] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L74] tmp = __VERIFIER_nondet_int() [L76] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L78] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L462] COND TRUE waterLevel < 2 [L463] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L78] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L84] tmp___0 = __VERIFIER_nondet_int() [L86] 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] [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L98] CALL startSystem() [L330] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L98] RET startSystem() [L113] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L141] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L148] COND TRUE \read(systemActive) [L150] CALL processEnvironment() [L196] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L199] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L214] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L170] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L173] COND TRUE ! pumpRunning [L175] CALL, EXPR isHighWaterLevel() [L293] int retValue_acc ; [L294] int tmp ; [L295] int tmp___0 ; [L299] CALL, EXPR isHighWaterSensorDry() [L524] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L527] COND FALSE !(waterLevel < 2) [L531] retValue_acc = 0 [L532] 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] [L299] RET, EXPR isHighWaterSensorDry() [L299] tmp = isHighWaterSensorDry() [L301] COND FALSE !(\read(tmp)) [L304] 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] [L306] retValue_acc = tmp___0 [L307] 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] [L175] RET, EXPR isHighWaterLevel() [L175] tmp = isHighWaterLevel() [L177] COND TRUE \read(tmp) [L179] CALL activatePump() [L224] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L179] RET activatePump() [L214] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L150] RET processEnvironment() [L156] CALL __utac_acc__Specification4_spec__1() [L905] int tmp ; [L906] int tmp___0 ; [L910] CALL, EXPR getWaterLevel() [L515] int retValue_acc ; [L518] retValue_acc = waterLevel [L519] 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] [L910] RET, EXPR getWaterLevel() [L910] tmp = getWaterLevel() [L912] 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] [L156] RET __utac_acc__Specification4_spec__1() [L113] 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] [L66] 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] [L68] 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] [L74] tmp = __VERIFIER_nondet_int() [L76] 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] [L84] tmp___0 = __VERIFIER_nondet_int() [L86] 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] [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L98] CALL startSystem() [L330] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L98] RET startSystem() [L113] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L141] COND TRUE \read(pumpRunning) [L143] CALL lowerWaterLevel() [L450] COND TRUE waterLevel > 0 [L451] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L143] RET lowerWaterLevel() [L148] COND TRUE \read(systemActive) [L150] CALL processEnvironment() [L196] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L199] COND TRUE \read(pumpRunning) [L201] CALL, EXPR isMethaneAlarm() [L237] int retValue_acc ; [L241] CALL, EXPR isMethaneLevelCritical() [L483] int retValue_acc ; [L486] retValue_acc = methaneLevelCritical [L487] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L241] RET, EXPR isMethaneLevelCritical() [L241] retValue_acc = isMethaneLevelCritical() [L243] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L201] RET, EXPR isMethaneAlarm() [L201] tmp = isMethaneAlarm() [L203] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L209] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L170] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L173] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L188] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L209] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L150] RET processEnvironment() [L156] CALL __utac_acc__Specification4_spec__1() [L905] int tmp ; [L906] int tmp___0 ; [L910] CALL, EXPR getWaterLevel() [L515] int retValue_acc ; [L518] retValue_acc = waterLevel [L519] 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] [L910] RET, EXPR getWaterLevel() [L910] tmp = getWaterLevel() [L912] 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] [L156] RET __utac_acc__Specification4_spec__1() [L113] 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] [L66] 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] [L68] 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] [L74] tmp = __VERIFIER_nondet_int() [L76] 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] [L84] tmp___0 = __VERIFIER_nondet_int() [L86] 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] [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L98] CALL startSystem() [L330] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L98] RET startSystem() [L113] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L141] COND TRUE \read(pumpRunning) [L143] CALL lowerWaterLevel() [L450] COND TRUE waterLevel > 0 [L451] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L143] RET lowerWaterLevel() [L148] COND TRUE \read(systemActive) [L150] CALL processEnvironment() [L196] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L199] COND TRUE \read(pumpRunning) [L201] CALL, EXPR isMethaneAlarm() [L237] int retValue_acc ; [L241] CALL, EXPR isMethaneLevelCritical() [L483] int retValue_acc ; [L486] retValue_acc = methaneLevelCritical [L487] 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] [L241] RET, EXPR isMethaneLevelCritical() [L241] retValue_acc = isMethaneLevelCritical() [L243] 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] [L201] RET, EXPR isMethaneAlarm() [L201] tmp = isMethaneAlarm() [L203] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L209] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L170] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L173] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L188] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L209] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L150] RET processEnvironment() [L156] CALL __utac_acc__Specification4_spec__1() [L905] int tmp ; [L906] int tmp___0 ; [L910] CALL, EXPR getWaterLevel() [L515] int retValue_acc ; [L518] retValue_acc = waterLevel [L519] 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] [L910] RET, EXPR getWaterLevel() [L910] tmp = getWaterLevel() [L912] COND TRUE tmp == 0 [L914] CALL, EXPR isPumpRunning() [L248] int retValue_acc ; [L251] retValue_acc = pumpRunning [L252] 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] [L914] RET, EXPR isPumpRunning() [L914] tmp___0 = isPumpRunning() [L916] COND TRUE \read(tmp___0) [L918] CALL __automaton_fail() [L339] 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 8 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1301 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1282 mSDsluCounter, 3424 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2306 mSDsCounter, 342 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1641 IncrementalHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 342 mSolverCounterUnsat, 1118 mSDtfsCounter, 1641 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 304 GetRequests, 206 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=492occurred in iteration=11, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 225 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 590 NumberOfCodeBlocks, 590 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 544 ConstructedInterpolants, 0 QuantifiedInterpolants, 1026 SizeOfPredicates, 4 NumberOfNonLiveVariables, 420 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 44/63 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! [2022-07-13 18:00:05,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE