./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_spec1_product53.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 55ce316e71b3537e039a3a4d2127e4eace2c49bce87df09105114bd008c08800 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:17:42,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:17:42,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:17:42,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:17:42,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:17:42,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:17:42,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:17:42,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:17:42,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:17:42,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:17:42,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:17:42,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:17:42,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:17:42,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:17:42,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:17:42,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:17:42,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:17:42,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:17:42,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:17:42,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:17:42,574 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:17:42,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:17:42,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:17:42,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:17:42,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:17:42,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:17:42,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:17:42,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:17:42,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:17:42,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:17:42,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:17:42,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:17:42,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:17:42,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:17:42,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:17:42,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:17:42,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:17:42,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:17:42,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:17:42,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:17:42,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:17:42,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:17:42,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:17:42,641 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:17:42,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:17:42,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:17:42,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:17:42,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:17:42,654 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:17:42,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:17:42,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:17:42,655 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:17:42,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:17:42,656 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:17:42,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:17:42,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:17:42,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:17:42,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:17:42,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:17:42,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:17:42,657 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:17:42,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:17:42,658 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:17:42,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:17:42,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:17:42,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:17:42,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:17:42,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:17:42,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:17:42,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:17:42,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:17:42,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:17:42,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:17:42,660 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:17:42,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:17:42,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:17:42,661 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55ce316e71b3537e039a3a4d2127e4eace2c49bce87df09105114bd008c08800 [2022-07-12 06:17:42,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:17:42,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:17:42,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:17:42,976 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:17:42,977 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:17:42,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2022-07-12 06:17:43,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c92475c9e/1f5622d0dbd645b1a2ee685e79c2291a/FLAGa064f571b [2022-07-12 06:17:43,923 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:17:43,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2022-07-12 06:17:43,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c92475c9e/1f5622d0dbd645b1a2ee685e79c2291a/FLAGa064f571b [2022-07-12 06:17:44,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c92475c9e/1f5622d0dbd645b1a2ee685e79c2291a [2022-07-12 06:17:44,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:17:44,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:17:44,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:17:44,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:17:44,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:17:44,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:17:44" (1/1) ... [2022-07-12 06:17:44,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9c72a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:44, skipping insertion in model container [2022-07-12 06:17:44,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:17:44" (1/1) ... [2022-07-12 06:17:44,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:17:44,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:17:44,506 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_spec1_product53.cil.c[2044,2057] [2022-07-12 06:17:44,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:17:44,757 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:17:44,778 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_spec1_product53.cil.c[2044,2057] [2022-07-12 06:17:44,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:17:44,960 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:17:44,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:44 WrapperNode [2022-07-12 06:17:44,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:17:44,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:17:44,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:17:44,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:17:44,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:44" (1/1) ... [2022-07-12 06:17:44,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:44" (1/1) ... [2022-07-12 06:17:45,054 INFO L137 Inliner]: procedures = 56, calls = 158, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 269 [2022-07-12 06:17:45,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:17:45,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:17:45,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:17:45,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:17:45,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:44" (1/1) ... [2022-07-12 06:17:45,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:44" (1/1) ... [2022-07-12 06:17:45,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:44" (1/1) ... [2022-07-12 06:17:45,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:44" (1/1) ... [2022-07-12 06:17:45,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:44" (1/1) ... [2022-07-12 06:17:45,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:44" (1/1) ... [2022-07-12 06:17:45,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:44" (1/1) ... [2022-07-12 06:17:45,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:17:45,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:17:45,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:17:45,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:17:45,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:44" (1/1) ... [2022-07-12 06:17:45,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:17:45,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:17:45,181 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) [2022-07-12 06:17:45,218 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 [2022-07-12 06:17:45,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:17:45,274 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-07-12 06:17:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-07-12 06:17:45,275 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-12 06:17:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-12 06:17:45,275 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-12 06:17:45,276 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-12 06:17:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-07-12 06:17:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-07-12 06:17:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-07-12 06:17:45,280 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-07-12 06:17:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-07-12 06:17:45,280 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-07-12 06:17:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2022-07-12 06:17:45,280 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2022-07-12 06:17:45,281 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-07-12 06:17:45,281 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-07-12 06:17:45,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:17:45,281 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-07-12 06:17:45,281 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-07-12 06:17:45,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:17:45,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:17:45,403 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:17:45,405 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:17:45,891 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:17:45,913 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:17:45,914 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 06:17:45,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:17:45 BoogieIcfgContainer [2022-07-12 06:17:45,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:17:45,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:17:45,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:17:45,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:17:45,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:17:44" (1/3) ... [2022-07-12 06:17:45,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bc1cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:17:45, skipping insertion in model container [2022-07-12 06:17:45,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:17:44" (2/3) ... [2022-07-12 06:17:45,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bc1cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:17:45, skipping insertion in model container [2022-07-12 06:17:45,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:17:45" (3/3) ... [2022-07-12 06:17:45,932 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2022-07-12 06:17:45,966 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:17:45,967 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:17:46,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:17:46,076 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@79ae811, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3292cc3c [2022-07-12 06:17:46,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:17:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 73 states have (on average 1.3835616438356164) internal successors, (101), 83 states have internal predecessors, (101), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-12 06:17:46,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-12 06:17:46,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:17:46,126 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] [2022-07-12 06:17:46,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:17:46,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:17:46,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1913126826, now seen corresponding path program 1 times [2022-07-12 06:17:46,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:17:46,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302283848] [2022-07-12 06:17:46,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:17:46,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:17:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:46,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:17:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:46,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:17:46,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:17:46,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302283848] [2022-07-12 06:17:46,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302283848] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:17:46,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:17:46,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 06:17:46,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609517999] [2022-07-12 06:17:46,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:17:46,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 06:17:46,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:17:46,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 06:17:46,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 06:17:46,579 INFO L87 Difference]: Start difference. First operand has 100 states, 73 states have (on average 1.3835616438356164) internal successors, (101), 83 states have internal predecessors, (101), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:17:46,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:17:46,658 INFO L93 Difference]: Finished difference Result 192 states and 261 transitions. [2022-07-12 06:17:46,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 06:17:46,661 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-07-12 06:17:46,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:17:46,688 INFO L225 Difference]: With dead ends: 192 [2022-07-12 06:17:46,689 INFO L226 Difference]: Without dead ends: 91 [2022-07-12 06:17:46,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 06:17:46,696 INFO L413 NwaCegarLoop]: 127 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, 127 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 [2022-07-12 06:17:46,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:17:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-07-12 06:17:46,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-07-12 06:17:46,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 75 states have internal predecessors, (87), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-12 06:17:46,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 118 transitions. [2022-07-12 06:17:46,793 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 118 transitions. Word has length 23 [2022-07-12 06:17:46,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:17:46,793 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 118 transitions. [2022-07-12 06:17:46,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:17:46,794 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 118 transitions. [2022-07-12 06:17:46,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-12 06:17:46,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:17:46,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:17:46,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:17:46,798 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:17:46,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:17:46,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2057110414, now seen corresponding path program 1 times [2022-07-12 06:17:46,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:17:46,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85579819] [2022-07-12 06:17:46,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:17:46,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:17:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:46,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:17:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:17:46,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:17:46,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85579819] [2022-07-12 06:17:46,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85579819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:17:46,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:17:46,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:17:46,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640520984] [2022-07-12 06:17:46,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:17:46,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:17:46,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:17:46,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:17:46,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:17:46,978 INFO L87 Difference]: Start difference. First operand 91 states and 118 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:17:46,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:17:46,996 INFO L93 Difference]: Finished difference Result 148 states and 192 transitions. [2022-07-12 06:17:46,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:17:46,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-07-12 06:17:46,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:17:47,001 INFO L225 Difference]: With dead ends: 148 [2022-07-12 06:17:47,001 INFO L226 Difference]: Without dead ends: 82 [2022-07-12 06:17:47,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:17:47,009 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 12 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 194 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 [2022-07-12 06:17:47,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 194 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:17:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-07-12 06:17:47,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-07-12 06:17:47,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 69 states have internal predecessors, (80), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-12 06:17:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2022-07-12 06:17:47,022 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 24 [2022-07-12 06:17:47,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:17:47,023 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2022-07-12 06:17:47,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:17:47,023 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2022-07-12 06:17:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-12 06:17:47,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:17:47,025 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] [2022-07-12 06:17:47,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:17:47,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:17:47,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:17:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash -249946390, now seen corresponding path program 1 times [2022-07-12 06:17:47,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:17:47,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015338028] [2022-07-12 06:17:47,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:17:47,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:17:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:47,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 06:17:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:47,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:17:47,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:17:47,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015338028] [2022-07-12 06:17:47,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015338028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:17:47,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:17:47,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:17:47,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155941412] [2022-07-12 06:17:47,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:17:47,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:17:47,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:17:47,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:17:47,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:17:47,150 INFO L87 Difference]: Start difference. First operand 82 states and 106 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:17:47,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:17:47,336 INFO L93 Difference]: Finished difference Result 157 states and 206 transitions. [2022-07-12 06:17:47,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:17:47,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-07-12 06:17:47,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:17:47,339 INFO L225 Difference]: With dead ends: 157 [2022-07-12 06:17:47,339 INFO L226 Difference]: Without dead ends: 82 [2022-07-12 06:17:47,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:17:47,342 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 197 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:17:47,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 219 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:17:47,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-07-12 06:17:47,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-07-12 06:17:47,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 69 states have internal predecessors, (79), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-12 06:17:47,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2022-07-12 06:17:47,358 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 28 [2022-07-12 06:17:47,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:17:47,358 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2022-07-12 06:17:47,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:17:47,359 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2022-07-12 06:17:47,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 06:17:47,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:17:47,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:17:47,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:17:47,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:17:47,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:17:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1573911843, now seen corresponding path program 1 times [2022-07-12 06:17:47,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:17:47,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932975253] [2022-07-12 06:17:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:17:47,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:17:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:47,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 06:17:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 06:17:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:47,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:17:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 06:17:47,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:17:47,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932975253] [2022-07-12 06:17:47,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932975253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:17:47,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:17:47,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:17:47,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733734137] [2022-07-12 06:17:47,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:17:47,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:17:47,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:17:47,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:17:47,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:17:47,513 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 06:17:47,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:17:47,654 INFO L93 Difference]: Finished difference Result 233 states and 302 transitions. [2022-07-12 06:17:47,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:17:47,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-07-12 06:17:47,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:17:47,660 INFO L225 Difference]: With dead ends: 233 [2022-07-12 06:17:47,660 INFO L226 Difference]: Without dead ends: 158 [2022-07-12 06:17:47,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:17:47,667 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 142 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:17:47,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 217 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:17:47,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-07-12 06:17:47,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2022-07-12 06:17:47,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 112 states have (on average 1.2767857142857142) internal successors, (143), 120 states have internal predecessors, (143), 19 states have call successors, (19), 15 states have call predecessors, (19), 20 states have return successors, (30), 21 states have call predecessors, (30), 19 states have call successors, (30) [2022-07-12 06:17:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 192 transitions. [2022-07-12 06:17:47,704 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 192 transitions. Word has length 41 [2022-07-12 06:17:47,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:17:47,704 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 192 transitions. [2022-07-12 06:17:47,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 06:17:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 192 transitions. [2022-07-12 06:17:47,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-12 06:17:47,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:17:47,708 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, 1] [2022-07-12 06:17:47,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:17:47,708 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:17:47,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:17:47,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1115572906, now seen corresponding path program 1 times [2022-07-12 06:17:47,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:17:47,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942655364] [2022-07-12 06:17:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:17:47,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:17:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:47,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 06:17:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:47,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:17:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:47,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:17:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:47,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:17:47,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:17:47,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942655364] [2022-07-12 06:17:47,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942655364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:17:47,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:17:47,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:17:47,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120435479] [2022-07-12 06:17:47,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:17:47,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:17:47,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:17:47,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:17:47,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:17:47,874 INFO L87 Difference]: Start difference. First operand 152 states and 192 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 06:17:48,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:17:48,090 INFO L93 Difference]: Finished difference Result 319 states and 419 transitions. [2022-07-12 06:17:48,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 06:17:48,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2022-07-12 06:17:48,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:17:48,095 INFO L225 Difference]: With dead ends: 319 [2022-07-12 06:17:48,095 INFO L226 Difference]: Without dead ends: 174 [2022-07-12 06:17:48,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:17:48,097 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 113 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:17:48,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 472 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:17:48,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-07-12 06:17:48,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 154. [2022-07-12 06:17:48,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 114 states have (on average 1.2719298245614035) internal successors, (145), 122 states have internal predecessors, (145), 19 states have call successors, (19), 15 states have call predecessors, (19), 20 states have return successors, (30), 21 states have call predecessors, (30), 19 states have call successors, (30) [2022-07-12 06:17:48,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 194 transitions. [2022-07-12 06:17:48,146 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 194 transitions. Word has length 47 [2022-07-12 06:17:48,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:17:48,147 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 194 transitions. [2022-07-12 06:17:48,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 06:17:48,147 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 194 transitions. [2022-07-12 06:17:48,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-12 06:17:48,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:17:48,151 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, 1] [2022-07-12 06:17:48,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:17:48,151 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:17:48,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:17:48,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1933221356, now seen corresponding path program 1 times [2022-07-12 06:17:48,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:17:48,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439828306] [2022-07-12 06:17:48,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:17:48,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:17:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:48,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 06:17:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:48,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:17:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:17:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:17:48,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:17:48,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439828306] [2022-07-12 06:17:48,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439828306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:17:48,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:17:48,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:17:48,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668540163] [2022-07-12 06:17:48,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:17:48,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:17:48,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:17:48,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:17:48,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:17:48,278 INFO L87 Difference]: Start difference. First operand 154 states and 194 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 06:17:48,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:17:48,587 INFO L93 Difference]: Finished difference Result 309 states and 397 transitions. [2022-07-12 06:17:48,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:17:48,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2022-07-12 06:17:48,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:17:48,605 INFO L225 Difference]: With dead ends: 309 [2022-07-12 06:17:48,606 INFO L226 Difference]: Without dead ends: 162 [2022-07-12 06:17:48,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:17:48,608 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 70 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:17:48,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 409 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:17:48,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-12 06:17:48,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 157. [2022-07-12 06:17:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 117 states have (on average 1.264957264957265) internal successors, (148), 125 states have internal predecessors, (148), 19 states have call successors, (19), 15 states have call predecessors, (19), 20 states have return successors, (30), 21 states have call predecessors, (30), 19 states have call successors, (30) [2022-07-12 06:17:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 197 transitions. [2022-07-12 06:17:48,620 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 197 transitions. Word has length 47 [2022-07-12 06:17:48,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:17:48,635 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 197 transitions. [2022-07-12 06:17:48,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 06:17:48,636 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 197 transitions. [2022-07-12 06:17:48,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-12 06:17:48,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:17:48,638 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, 1] [2022-07-12 06:17:48,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:17:48,638 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:17:48,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:17:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1334427624, now seen corresponding path program 1 times [2022-07-12 06:17:48,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:17:48,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20535231] [2022-07-12 06:17:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:17:48,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:17:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:48,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 06:17:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:48,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:17:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:48,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:17:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:17:48,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:17:48,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20535231] [2022-07-12 06:17:48,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20535231] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:17:48,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:17:48,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:17:48,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535261078] [2022-07-12 06:17:48,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:17:48,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:17:48,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:17:48,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:17:48,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:17:48,783 INFO L87 Difference]: Start difference. First operand 157 states and 197 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 06:17:49,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:17:49,749 INFO L93 Difference]: Finished difference Result 440 states and 574 transitions. [2022-07-12 06:17:49,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:17:49,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-07-12 06:17:49,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:17:49,752 INFO L225 Difference]: With dead ends: 440 [2022-07-12 06:17:49,752 INFO L226 Difference]: Without dead ends: 290 [2022-07-12 06:17:49,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:17:49,753 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 210 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:17:49,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 343 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 06:17:49,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-07-12 06:17:49,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 282. [2022-07-12 06:17:49,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 209 states have (on average 1.244019138755981) internal successors, (260), 221 states have internal predecessors, (260), 36 states have call successors, (36), 33 states have call predecessors, (36), 36 states have return successors, (62), 37 states have call predecessors, (62), 36 states have call successors, (62) [2022-07-12 06:17:49,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 358 transitions. [2022-07-12 06:17:49,798 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 358 transitions. Word has length 47 [2022-07-12 06:17:49,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:17:49,798 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 358 transitions. [2022-07-12 06:17:49,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 06:17:49,799 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 358 transitions. [2022-07-12 06:17:49,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-12 06:17:49,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:17:49,800 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, 1, 1, 1] [2022-07-12 06:17:49,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:17:49,801 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:17:49,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:17:49,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1188763585, now seen corresponding path program 1 times [2022-07-12 06:17:49,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:17:49,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595787796] [2022-07-12 06:17:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:17:49,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:17:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:49,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 06:17:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:49,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:17:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:49,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 06:17:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:49,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:17:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:49,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:17:49,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:17:49,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595787796] [2022-07-12 06:17:49,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595787796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:17:49,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:17:49,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:17:49,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674635386] [2022-07-12 06:17:49,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:17:49,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:17:49,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:17:49,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:17:49,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:17:49,910 INFO L87 Difference]: Start difference. First operand 282 states and 358 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 06:17:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:17:50,520 INFO L93 Difference]: Finished difference Result 838 states and 1096 transitions. [2022-07-12 06:17:50,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 06:17:50,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2022-07-12 06:17:50,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:17:50,546 INFO L225 Difference]: With dead ends: 838 [2022-07-12 06:17:50,546 INFO L226 Difference]: Without dead ends: 563 [2022-07-12 06:17:50,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-07-12 06:17:50,548 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 177 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:17:50,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 402 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 06:17:50,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-12 06:17:50,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 543. [2022-07-12 06:17:50,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 398 states have (on average 1.2135678391959799) internal successors, (483), 421 states have internal predecessors, (483), 72 states have call successors, (72), 66 states have call predecessors, (72), 72 states have return successors, (129), 74 states have call predecessors, (129), 72 states have call successors, (129) [2022-07-12 06:17:50,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 684 transitions. [2022-07-12 06:17:50,601 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 684 transitions. Word has length 49 [2022-07-12 06:17:50,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:17:50,603 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 684 transitions. [2022-07-12 06:17:50,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 06:17:50,603 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 684 transitions. [2022-07-12 06:17:50,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-12 06:17:50,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:17:50,604 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:17:50,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:17:50,605 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:17:50,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:17:50,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1371686589, now seen corresponding path program 1 times [2022-07-12 06:17:50,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:17:50,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132218075] [2022-07-12 06:17:50,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:17:50,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:17:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:50,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 06:17:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 06:17:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:50,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:17:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:50,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 06:17:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 06:17:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:17:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:17:50,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:17:50,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132218075] [2022-07-12 06:17:50,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132218075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:17:50,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:17:50,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:17:50,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345669496] [2022-07-12 06:17:50,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:17:50,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:17:50,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:17:50,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:17:50,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:17:50,794 INFO L87 Difference]: Start difference. First operand 543 states and 684 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 06:17:51,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:17:51,292 INFO L93 Difference]: Finished difference Result 565 states and 714 transitions. [2022-07-12 06:17:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:17:51,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2022-07-12 06:17:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:17:51,298 INFO L225 Difference]: With dead ends: 565 [2022-07-12 06:17:51,298 INFO L226 Difference]: Without dead ends: 563 [2022-07-12 06:17:51,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:17:51,300 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 201 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:17:51,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 189 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 06:17:51,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-12 06:17:51,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 543. [2022-07-12 06:17:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 398 states have (on average 1.2035175879396984) internal successors, (479), 421 states have internal predecessors, (479), 72 states have call successors, (72), 66 states have call predecessors, (72), 72 states have return successors, (129), 74 states have call predecessors, (129), 72 states have call successors, (129) [2022-07-12 06:17:51,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 680 transitions. [2022-07-12 06:17:51,356 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 680 transitions. Word has length 53 [2022-07-12 06:17:51,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:17:51,357 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 680 transitions. [2022-07-12 06:17:51,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 06:17:51,358 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 680 transitions. [2022-07-12 06:17:51,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-12 06:17:51,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:17:51,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:17:51,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:17:51,360 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:17:51,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:17:51,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1082393982, now seen corresponding path program 1 times [2022-07-12 06:17:51,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:17:51,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544743452] [2022-07-12 06:17:51,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:17:51,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:17:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 06:17:51,385 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 06:17:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 06:17:51,446 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 06:17:51,446 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 06:17:51,447 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 06:17:51,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 06:17:51,452 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:17:51,454 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 06:17:51,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 06:17:51 BoogieIcfgContainer [2022-07-12 06:17:51,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 06:17:51,565 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 06:17:51,565 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 06:17:51,565 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 06:17:51,565 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:17:45" (3/4) ... [2022-07-12 06:17:51,567 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 06:17:51,661 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 06:17:51,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 06:17:51,664 INFO L158 Benchmark]: Toolchain (without parser) took 7484.02ms. Allocated memory was 102.8MB in the beginning and 172.0MB in the end (delta: 69.2MB). Free memory was 71.0MB in the beginning and 61.3MB in the end (delta: 9.7MB). Peak memory consumption was 78.8MB. Max. memory is 16.1GB. [2022-07-12 06:17:51,664 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 102.8MB. Free memory was 59.5MB in the beginning and 59.4MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 06:17:51,664 INFO L158 Benchmark]: CACSL2BoogieTranslator took 776.74ms. Allocated memory was 102.8MB in the beginning and 142.6MB in the end (delta: 39.8MB). Free memory was 70.7MB in the beginning and 110.1MB in the end (delta: -39.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 06:17:51,665 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.59ms. Allocated memory is still 142.6MB. Free memory was 110.1MB in the beginning and 107.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 06:17:51,665 INFO L158 Benchmark]: Boogie Preprocessor took 54.26ms. Allocated memory is still 142.6MB. Free memory was 107.6MB in the beginning and 105.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 06:17:51,665 INFO L158 Benchmark]: RCFGBuilder took 796.65ms. Allocated memory is still 142.6MB. Free memory was 105.9MB in the beginning and 88.4MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-12 06:17:51,665 INFO L158 Benchmark]: TraceAbstraction took 5637.71ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 87.5MB in the beginning and 66.5MB in the end (delta: 21.0MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. [2022-07-12 06:17:51,666 INFO L158 Benchmark]: Witness Printer took 98.61ms. Allocated memory is still 172.0MB. Free memory was 66.5MB in the beginning and 61.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 06:17:51,668 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 102.8MB. Free memory was 59.5MB in the beginning and 59.4MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 776.74ms. Allocated memory was 102.8MB in the beginning and 142.6MB in the end (delta: 39.8MB). Free memory was 70.7MB in the beginning and 110.1MB in the end (delta: -39.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.59ms. Allocated memory is still 142.6MB. Free memory was 110.1MB in the beginning and 107.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.26ms. Allocated memory is still 142.6MB. Free memory was 107.6MB in the beginning and 105.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 796.65ms. Allocated memory is still 142.6MB. Free memory was 105.9MB in the beginning and 88.4MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5637.71ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 87.5MB in the beginning and 66.5MB in the end (delta: 21.0MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. * Witness Printer took 98.61ms. Allocated memory is still 172.0MB. Free memory was 66.5MB in the beginning and 61.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 83]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L257] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L454] int cleanupTimeShifts = 4; [L564] int pumpRunning = 0; [L565] int systemActive = 1; [L888] int waterLevel = 1; [L889] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L535] int retValue_acc ; [L536] int tmp ; [L540] FCALL select_helpers() [L541] FCALL select_features() [L542] CALL, EXPR valid_product() [L878] int retValue_acc ; [L881] retValue_acc = 1 [L882] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L542] RET, EXPR valid_product() [L542] tmp = valid_product() [L544] COND TRUE \read(tmp) [L546] FCALL setup() [L547] CALL runTest() [L526] CALL test() [L788] int splverifierCounter ; [L789] int tmp ; [L790] int tmp___0 ; [L791] int tmp___1 ; [L792] int tmp___2 ; [L795] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L797] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L799] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L805] tmp = __VERIFIER_nondet_int() [L807] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L809] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L906] COND TRUE waterLevel < 2 [L907] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L809] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L815] tmp___0 = __VERIFIER_nondet_int() [L817] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L819] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L918] COND FALSE !(\read(methaneLevelCritical)) [L921] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L819] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L825] tmp___2 = __VERIFIER_nondet_int() [L827] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, tmp___2=-2, waterLevel=2] [L840] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L571] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L578] COND TRUE \read(systemActive) [L580] CALL processEnvironment() [L652] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L655] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L670] CALL processEnvironment__wrappee__lowWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L626] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L629] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L644] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L600] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L603] COND TRUE ! pumpRunning [L605] CALL, EXPR isHighWaterLevel() [L749] int retValue_acc ; [L750] int tmp ; [L751] int tmp___0 ; [L755] CALL, EXPR isHighWaterSensorDry() [L968] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L971] COND FALSE !(waterLevel < 2) [L975] retValue_acc = 0 [L976] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L755] RET, EXPR isHighWaterSensorDry() [L755] tmp = isHighWaterSensorDry() [L757] COND FALSE !(\read(tmp)) [L760] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L762] retValue_acc = tmp___0 [L763] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L605] RET, EXPR isHighWaterLevel() [L605] tmp = isHighWaterLevel() [L607] COND TRUE \read(tmp) [L609] CALL activatePump() [L680] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L609] RET activatePump() [L644] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L670] RET processEnvironment__wrappee__lowWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L580] RET processEnvironment() [L586] CALL __utac_acc__Specification1_spec__1() [L54] int tmp ; [L55] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L59] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L927] int retValue_acc ; [L930] retValue_acc = methaneLevelCritical [L931] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L59] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L59] tmp = isMethaneLevelCritical() [L61] COND TRUE \read(tmp) [L63] CALL, EXPR isPumpRunning() [L704] int retValue_acc ; [L707] retValue_acc = pumpRunning [L708] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L63] RET, EXPR isPumpRunning() [L63] tmp___0 = isPumpRunning() [L65] COND TRUE \read(tmp___0) [L67] CALL __automaton_fail() [L83] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 100 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1155 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1122 mSDsluCounter, 2572 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1586 mSDsCounter, 335 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1236 IncrementalHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 335 mSolverCounterUnsat, 986 mSDtfsCounter, 1236 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=543occurred in iteration=8, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 79 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 414 NumberOfCodeBlocks, 414 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 662 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 3/3 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! [2022-07-12 06:17:51,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE