./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.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 --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 07a8b8b198dffd8285677bd0bfdd16b4d1f780e3a9696ef3e27a077e8ff12a49 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 19:41:09,301 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 19:41:09,367 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 19:41:09,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 19:41:09,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 19:41:09,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 19:41:09,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 19:41:09,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 19:41:09,410 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 19:41:09,411 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 19:41:09,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 19:41:09,412 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 19:41:09,412 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 19:41:09,414 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 19:41:09,415 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 19:41:09,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 19:41:09,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 19:41:09,416 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 19:41:09,416 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 19:41:09,416 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 19:41:09,416 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 19:41:09,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 19:41:09,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 19:41:09,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 19:41:09,422 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 19:41:09,422 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 19:41:09,422 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 19:41:09,422 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 19:41:09,422 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 19:41:09,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 19:41:09,423 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 19:41:09,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 19:41:09,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 19:41:09,424 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 19:41:09,424 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 19:41:09,424 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 19:41:09,425 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 19:41:09,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 19:41:09,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 19:41:09,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 19:41:09,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 19:41:09,427 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 19:41:09,427 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07a8b8b198dffd8285677bd0bfdd16b4d1f780e3a9696ef3e27a077e8ff12a49 [2024-10-23 19:41:09,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 19:41:09,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 19:41:09,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 19:41:09,737 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 19:41:09,738 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 19:41:09,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c [2024-10-23 19:41:11,127 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 19:41:11,151 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-10-23 19:41:11,308 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 19:41:11,309 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c [2024-10-23 19:41:11,317 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3034fa0/9f2830a6fc7942b2a0d646962e9e524a/FLAGc826b0a4e [2024-10-23 19:41:11,704 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3034fa0/9f2830a6fc7942b2a0d646962e9e524a [2024-10-23 19:41:11,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 19:41:11,708 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 19:41:11,709 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 19:41:11,709 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 19:41:11,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 19:41:11,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:41:11" (1/1) ... [2024-10-23 19:41:11,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2169bb4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:41:11, skipping insertion in model container [2024-10-23 19:41:11,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:41:11" (1/1) ... [2024-10-23 19:41:11,739 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 19:41:11,917 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c[342,355] [2024-10-23 19:41:11,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 19:41:11,964 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 19:41:11,978 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c[342,355] [2024-10-23 19:41:11,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 19:41:12,016 INFO L204 MainTranslator]: Completed translation [2024-10-23 19:41:12,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:41:12 WrapperNode [2024-10-23 19:41:12,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 19:41:12,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 19:41:12,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 19:41:12,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 19:41:12,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:41:12" (1/1) ... [2024-10-23 19:41:12,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:41:12" (1/1) ... [2024-10-23 19:41:12,060 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2024-10-23 19:41:12,061 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 19:41:12,062 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 19:41:12,062 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 19:41:12,062 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 19:41:12,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:41:12" (1/1) ... [2024-10-23 19:41:12,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:41:12" (1/1) ... [2024-10-23 19:41:12,074 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:41:12" (1/1) ... [2024-10-23 19:41:12,091 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 7, 3]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 3, 1]. [2024-10-23 19:41:12,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:41:12" (1/1) ... [2024-10-23 19:41:12,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:41:12" (1/1) ... [2024-10-23 19:41:12,104 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:41:12" (1/1) ... [2024-10-23 19:41:12,113 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:41:12" (1/1) ... [2024-10-23 19:41:12,115 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:41:12" (1/1) ... [2024-10-23 19:41:12,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:41:12" (1/1) ... [2024-10-23 19:41:12,118 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 19:41:12,119 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 19:41:12,119 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 19:41:12,120 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 19:41:12,121 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:41:12" (1/1) ... [2024-10-23 19:41:12,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 19:41:12,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:41:12,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 19:41:12,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 19:41:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 19:41:12,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 19:41:12,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 19:41:12,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-23 19:41:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 19:41:12,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-23 19:41:12,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-23 19:41:12,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-23 19:41:12,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 19:41:12,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 19:41:12,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-23 19:41:12,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-23 19:41:12,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-23 19:41:12,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 19:41:12,318 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 19:41:12,320 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 19:41:12,624 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-10-23 19:41:12,624 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 19:41:12,674 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 19:41:12,675 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-23 19:41:12,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:41:12 BoogieIcfgContainer [2024-10-23 19:41:12,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 19:41:12,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 19:41:12,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 19:41:12,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 19:41:12,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:41:11" (1/3) ... [2024-10-23 19:41:12,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8d3cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:41:12, skipping insertion in model container [2024-10-23 19:41:12,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:41:12" (2/3) ... [2024-10-23 19:41:12,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8d3cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:41:12, skipping insertion in model container [2024-10-23 19:41:12,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:41:12" (3/3) ... [2024-10-23 19:41:12,685 INFO L112 eAbstractionObserver]: Analyzing ICFG check_removal_from_set_after_insertion.c [2024-10-23 19:41:12,700 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 19:41:12,700 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 19:41:12,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 19:41:12,764 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1826bc22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 19:41:12,764 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 19:41:12,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:12,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-23 19:41:12,774 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:41:12,775 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:41:12,775 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:41:12,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:41:12,784 INFO L85 PathProgramCache]: Analyzing trace with hash 272925399, now seen corresponding path program 1 times [2024-10-23 19:41:12,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:41:12,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089527345] [2024-10-23 19:41:12,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:41:12,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:41:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:41:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 19:41:13,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:41:13,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089527345] [2024-10-23 19:41:13,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089527345] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:41:13,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 19:41:13,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 19:41:13,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76584903] [2024-10-23 19:41:13,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:41:13,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 19:41:13,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:41:13,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 19:41:13,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 19:41:13,080 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:13,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:41:13,142 INFO L93 Difference]: Finished difference Result 47 states and 81 transitions. [2024-10-23 19:41:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 19:41:13,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-23 19:41:13,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:41:13,152 INFO L225 Difference]: With dead ends: 47 [2024-10-23 19:41:13,152 INFO L226 Difference]: Without dead ends: 23 [2024-10-23 19:41:13,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 19:41:13,161 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:41:13,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:41:13,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-23 19:41:13,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-10-23 19:41:13,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:13,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2024-10-23 19:41:13,194 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 11 [2024-10-23 19:41:13,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:41:13,194 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2024-10-23 19:41:13,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2024-10-23 19:41:13,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-23 19:41:13,195 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:41:13,195 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:41:13,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 19:41:13,196 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:41:13,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:41:13,197 INFO L85 PathProgramCache]: Analyzing trace with hash 410553975, now seen corresponding path program 1 times [2024-10-23 19:41:13,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:41:13,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578184919] [2024-10-23 19:41:13,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:41:13,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:41:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:41:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 19:41:13,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:41:13,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578184919] [2024-10-23 19:41:13,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578184919] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:41:13,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 19:41:13,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 19:41:13,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182540818] [2024-10-23 19:41:13,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:41:13,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 19:41:13,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:41:13,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 19:41:13,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:41:13,349 INFO L87 Difference]: Start difference. First operand 23 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:13,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:41:13,410 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2024-10-23 19:41:13,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 19:41:13,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-23 19:41:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:41:13,412 INFO L225 Difference]: With dead ends: 42 [2024-10-23 19:41:13,416 INFO L226 Difference]: Without dead ends: 30 [2024-10-23 19:41:13,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:41:13,418 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 37 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:41:13,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 33 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:41:13,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-23 19:41:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2024-10-23 19:41:13,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2024-10-23 19:41:13,428 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 12 [2024-10-23 19:41:13,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:41:13,431 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2024-10-23 19:41:13,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:13,432 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2024-10-23 19:41:13,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-23 19:41:13,435 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:41:13,435 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:41:13,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 19:41:13,435 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:41:13,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:41:13,437 INFO L85 PathProgramCache]: Analyzing trace with hash -29285378, now seen corresponding path program 1 times [2024-10-23 19:41:13,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:41:13,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79892384] [2024-10-23 19:41:13,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:41:13,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:41:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:41:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 19:41:13,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:41:13,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79892384] [2024-10-23 19:41:13,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79892384] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:41:13,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 19:41:13,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 19:41:13,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731311983] [2024-10-23 19:41:13,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:41:13,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 19:41:13,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:41:13,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 19:41:13,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:41:13,625 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:13,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:41:13,676 INFO L93 Difference]: Finished difference Result 61 states and 85 transitions. [2024-10-23 19:41:13,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 19:41:13,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-10-23 19:41:13,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:41:13,678 INFO L225 Difference]: With dead ends: 61 [2024-10-23 19:41:13,678 INFO L226 Difference]: Without dead ends: 42 [2024-10-23 19:41:13,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 19:41:13,680 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 23 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:41:13,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 98 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:41:13,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-23 19:41:13,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2024-10-23 19:41:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:13,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2024-10-23 19:41:13,694 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 18 [2024-10-23 19:41:13,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:41:13,695 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2024-10-23 19:41:13,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:13,695 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2024-10-23 19:41:13,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-23 19:41:13,696 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:41:13,696 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:41:13,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 19:41:13,697 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:41:13,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:41:13,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1590182388, now seen corresponding path program 1 times [2024-10-23 19:41:13,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:41:13,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096721002] [2024-10-23 19:41:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:41:13,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:41:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:41:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 19:41:13,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:41:13,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096721002] [2024-10-23 19:41:13,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096721002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:41:13,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 19:41:13,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 19:41:13,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107550787] [2024-10-23 19:41:13,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:41:13,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 19:41:13,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:41:13,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 19:41:13,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 19:41:13,782 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:13,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:41:13,823 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2024-10-23 19:41:13,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 19:41:13,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-10-23 19:41:13,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:41:13,825 INFO L225 Difference]: With dead ends: 41 [2024-10-23 19:41:13,826 INFO L226 Difference]: Without dead ends: 32 [2024-10-23 19:41:13,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 19:41:13,828 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:41:13,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:41:13,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-23 19:41:13,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-10-23 19:41:13,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2024-10-23 19:41:13,837 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 18 [2024-10-23 19:41:13,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:41:13,837 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2024-10-23 19:41:13,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:13,838 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-10-23 19:41:13,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-23 19:41:13,838 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:41:13,839 INFO L215 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] [2024-10-23 19:41:13,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 19:41:13,839 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:41:13,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:41:13,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1025672490, now seen corresponding path program 1 times [2024-10-23 19:41:13,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:41:13,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554698888] [2024-10-23 19:41:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:41:13,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:41:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:41:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 19:41:14,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:41:14,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554698888] [2024-10-23 19:41:14,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554698888] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:41:14,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447575804] [2024-10-23 19:41:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:41:14,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:41:14,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:41:14,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:41:14,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 19:41:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:41:14,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 19:41:14,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:41:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 19:41:14,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:41:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 19:41:14,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447575804] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:41:14,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:41:14,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-10-23 19:41:14,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167349688] [2024-10-23 19:41:14,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:41:14,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-23 19:41:14,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:41:14,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-23 19:41:14,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-10-23 19:41:14,303 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:14,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:41:14,512 INFO L93 Difference]: Finished difference Result 105 states and 140 transitions. [2024-10-23 19:41:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-23 19:41:14,513 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-10-23 19:41:14,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:41:14,515 INFO L225 Difference]: With dead ends: 105 [2024-10-23 19:41:14,516 INFO L226 Difference]: Without dead ends: 76 [2024-10-23 19:41:14,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2024-10-23 19:41:14,519 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 86 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 19:41:14,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 56 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 19:41:14,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-23 19:41:14,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 43. [2024-10-23 19:41:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 42 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:14,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2024-10-23 19:41:14,532 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 22 [2024-10-23 19:41:14,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:41:14,532 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2024-10-23 19:41:14,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2024-10-23 19:41:14,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-23 19:41:14,535 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:41:14,535 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:41:14,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 19:41:14,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:41:14,736 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:41:14,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:41:14,737 INFO L85 PathProgramCache]: Analyzing trace with hash 521152929, now seen corresponding path program 1 times [2024-10-23 19:41:14,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:41:14,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840031903] [2024-10-23 19:41:14,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:41:14,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:41:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:41:14,864 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-23 19:41:14,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:41:14,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840031903] [2024-10-23 19:41:14,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840031903] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:41:14,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028637962] [2024-10-23 19:41:14,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:41:14,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:41:14,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:41:14,868 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:41:14,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 19:41:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:41:14,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-23 19:41:14,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:41:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-23 19:41:15,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:41:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-23 19:41:15,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028637962] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:41:15,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:41:15,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-10-23 19:41:15,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804260896] [2024-10-23 19:41:15,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:41:15,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-23 19:41:15,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:41:15,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-23 19:41:15,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2024-10-23 19:41:15,126 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:15,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:41:15,220 INFO L93 Difference]: Finished difference Result 88 states and 118 transitions. [2024-10-23 19:41:15,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-23 19:41:15,221 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-10-23 19:41:15,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:41:15,221 INFO L225 Difference]: With dead ends: 88 [2024-10-23 19:41:15,221 INFO L226 Difference]: Without dead ends: 51 [2024-10-23 19:41:15,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2024-10-23 19:41:15,223 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 19:41:15,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 68 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 19:41:15,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-23 19:41:15,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2024-10-23 19:41:15,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 48 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2024-10-23 19:41:15,237 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 28 [2024-10-23 19:41:15,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:41:15,237 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2024-10-23 19:41:15,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:15,238 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2024-10-23 19:41:15,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-23 19:41:15,239 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:41:15,239 INFO L215 NwaCegarLoop]: trace histogram [10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:41:15,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 19:41:15,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-23 19:41:15,440 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:41:15,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:41:15,440 INFO L85 PathProgramCache]: Analyzing trace with hash -690598495, now seen corresponding path program 2 times [2024-10-23 19:41:15,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:41:15,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971146028] [2024-10-23 19:41:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:41:15,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:41:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:41:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-23 19:41:15,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:41:15,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971146028] [2024-10-23 19:41:15,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971146028] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:41:15,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361521286] [2024-10-23 19:41:15,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 19:41:15,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:41:15,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:41:15,790 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:41:15,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 19:41:15,910 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 19:41:15,911 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 19:41:15,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-23 19:41:15,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:41:16,099 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-23 19:41:16,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:41:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-23 19:41:16,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361521286] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:41:16,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:41:16,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2024-10-23 19:41:16,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420539509] [2024-10-23 19:41:16,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:41:16,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-23 19:41:16,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:41:16,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-23 19:41:16,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=640, Unknown=0, NotChecked=0, Total=1190 [2024-10-23 19:41:16,358 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand has 35 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:16,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:41:16,457 INFO L93 Difference]: Finished difference Result 100 states and 136 transitions. [2024-10-23 19:41:16,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-23 19:41:16,458 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-23 19:41:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:41:16,459 INFO L225 Difference]: With dead ends: 100 [2024-10-23 19:41:16,459 INFO L226 Difference]: Without dead ends: 63 [2024-10-23 19:41:16,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=550, Invalid=640, Unknown=0, NotChecked=0, Total=1190 [2024-10-23 19:41:16,461 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 19:41:16,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 78 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 19:41:16,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-10-23 19:41:16,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2024-10-23 19:41:16,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2024-10-23 19:41:16,480 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 34 [2024-10-23 19:41:16,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:41:16,480 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2024-10-23 19:41:16,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:16,480 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2024-10-23 19:41:16,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-23 19:41:16,481 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:41:16,482 INFO L215 NwaCegarLoop]: trace histogram [22, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:41:16,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 19:41:16,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:41:16,684 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:41:16,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:41:16,684 INFO L85 PathProgramCache]: Analyzing trace with hash 773952929, now seen corresponding path program 3 times [2024-10-23 19:41:16,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:41:16,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701706224] [2024-10-23 19:41:16,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:41:16,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:41:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:41:17,530 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-23 19:41:17,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:41:17,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701706224] [2024-10-23 19:41:17,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701706224] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:41:17,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587866021] [2024-10-23 19:41:17,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 19:41:17,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:41:17,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:41:17,536 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:41:17,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 19:41:17,655 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-23 19:41:17,656 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 19:41:17,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 19:41:17,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:41:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-10-23 19:41:17,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:41:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-10-23 19:41:17,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587866021] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:41:17,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:41:17,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 4, 4] total 30 [2024-10-23 19:41:17,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500678123] [2024-10-23 19:41:17,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:41:17,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-23 19:41:17,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:41:17,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-23 19:41:17,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=605, Unknown=0, NotChecked=0, Total=930 [2024-10-23 19:41:17,884 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:18,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:41:18,718 INFO L93 Difference]: Finished difference Result 358 states and 440 transitions. [2024-10-23 19:41:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-23 19:41:18,719 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-10-23 19:41:18,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:41:18,720 INFO L225 Difference]: With dead ends: 358 [2024-10-23 19:41:18,721 INFO L226 Difference]: Without dead ends: 321 [2024-10-23 19:41:18,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=935, Invalid=2035, Unknown=0, NotChecked=0, Total=2970 [2024-10-23 19:41:18,722 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 797 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 19:41:18,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 152 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 19:41:18,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-10-23 19:41:18,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 96. [2024-10-23 19:41:18,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.231578947368421) internal successors, (117), 95 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 117 transitions. [2024-10-23 19:41:18,739 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 117 transitions. Word has length 46 [2024-10-23 19:41:18,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:41:18,739 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 117 transitions. [2024-10-23 19:41:18,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:18,739 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 117 transitions. [2024-10-23 19:41:18,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-23 19:41:18,741 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:41:18,741 INFO L215 NwaCegarLoop]: trace histogram [23, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:41:18,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-23 19:41:18,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:41:18,946 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:41:18,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:41:18,946 INFO L85 PathProgramCache]: Analyzing trace with hash -579863348, now seen corresponding path program 1 times [2024-10-23 19:41:18,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:41:18,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518415938] [2024-10-23 19:41:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:41:18,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:41:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:41:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2024-10-23 19:41:19,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:41:19,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518415938] [2024-10-23 19:41:19,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518415938] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:41:19,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 19:41:19,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 19:41:19,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900706091] [2024-10-23 19:41:19,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:41:19,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 19:41:19,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:41:19,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 19:41:19,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:41:19,110 INFO L87 Difference]: Start difference. First operand 96 states and 117 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:19,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:41:19,144 INFO L93 Difference]: Finished difference Result 140 states and 176 transitions. [2024-10-23 19:41:19,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 19:41:19,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-23 19:41:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:41:19,147 INFO L225 Difference]: With dead ends: 140 [2024-10-23 19:41:19,147 INFO L226 Difference]: Without dead ends: 102 [2024-10-23 19:41:19,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:41:19,148 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:41:19,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:41:19,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-23 19:41:19,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-10-23 19:41:19,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 101 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:19,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 123 transitions. [2024-10-23 19:41:19,169 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 123 transitions. Word has length 65 [2024-10-23 19:41:19,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:41:19,169 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 123 transitions. [2024-10-23 19:41:19,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:19,169 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 123 transitions. [2024-10-23 19:41:19,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-23 19:41:19,170 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:41:19,170 INFO L215 NwaCegarLoop]: trace histogram [23, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:41:19,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 19:41:19,171 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:41:19,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:41:19,171 INFO L85 PathProgramCache]: Analyzing trace with hash -597335259, now seen corresponding path program 1 times [2024-10-23 19:41:19,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:41:19,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671195829] [2024-10-23 19:41:19,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:41:19,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:41:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:41:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-23 19:41:20,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:41:20,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671195829] [2024-10-23 19:41:20,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671195829] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:41:20,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423246404] [2024-10-23 19:41:20,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:41:20,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:41:20,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:41:20,064 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:41:20,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 19:41:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:41:20,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-23 19:41:20,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:41:20,763 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-23 19:41:20,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:41:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-23 19:41:21,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423246404] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:41:21,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:41:21,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 73 [2024-10-23 19:41:21,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645466904] [2024-10-23 19:41:21,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:41:21,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-10-23 19:41:21,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:41:21,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-10-23 19:41:21,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2448, Invalid=2954, Unknown=0, NotChecked=0, Total=5402 [2024-10-23 19:41:21,555 INFO L87 Difference]: Start difference. First operand 102 states and 123 transitions. Second operand has 74 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 73 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:21,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:41:21,675 INFO L93 Difference]: Finished difference Result 206 states and 273 transitions. [2024-10-23 19:41:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-10-23 19:41:21,679 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 73 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-23 19:41:21,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:41:21,680 INFO L225 Difference]: With dead ends: 206 [2024-10-23 19:41:21,680 INFO L226 Difference]: Without dead ends: 129 [2024-10-23 19:41:21,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2230 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2448, Invalid=2954, Unknown=0, NotChecked=0, Total=5402 [2024-10-23 19:41:21,683 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 19:41:21,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 77 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 19:41:21,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-10-23 19:41:21,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2024-10-23 19:41:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.1746031746031746) internal successors, (148), 126 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:21,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2024-10-23 19:41:21,700 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 65 [2024-10-23 19:41:21,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:41:21,701 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2024-10-23 19:41:21,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 73 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:21,701 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2024-10-23 19:41:21,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-23 19:41:21,702 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:41:21,702 INFO L215 NwaCegarLoop]: trace histogram [48, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:41:21,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-23 19:41:21,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-23 19:41:21,907 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:41:21,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:41:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash -878508347, now seen corresponding path program 2 times [2024-10-23 19:41:21,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:41:21,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168745436] [2024-10-23 19:41:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:41:21,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:41:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:41:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-23 19:41:24,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:41:24,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168745436] [2024-10-23 19:41:24,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168745436] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:41:24,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853858861] [2024-10-23 19:41:24,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 19:41:24,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:41:24,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:41:24,411 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:41:24,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 19:41:24,706 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 19:41:24,706 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 19:41:24,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-10-23 19:41:24,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:41:26,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-23 19:41:26,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:41:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-23 19:41:28,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853858861] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:41:28,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:41:28,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 148 [2024-10-23 19:41:28,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253137221] [2024-10-23 19:41:28,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:41:28,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2024-10-23 19:41:28,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:41:28,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2024-10-23 19:41:28,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9898, Invalid=12154, Unknown=0, NotChecked=0, Total=22052 [2024-10-23 19:41:28,791 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand has 149 states, 149 states have (on average 1.1610738255033557) internal successors, (173), 148 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:29,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:41:29,078 INFO L93 Difference]: Finished difference Result 256 states and 348 transitions. [2024-10-23 19:41:29,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-10-23 19:41:29,079 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 1.1610738255033557) internal successors, (173), 148 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-10-23 19:41:29,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:41:29,080 INFO L225 Difference]: With dead ends: 256 [2024-10-23 19:41:29,081 INFO L226 Difference]: Without dead ends: 179 [2024-10-23 19:41:29,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9455 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=9898, Invalid=12154, Unknown=0, NotChecked=0, Total=22052 [2024-10-23 19:41:29,087 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 19:41:29,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 125 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 19:41:29,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-10-23 19:41:29,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2024-10-23 19:41:29,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.125) internal successors, (198), 176 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:29,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 198 transitions. [2024-10-23 19:41:29,121 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 198 transitions. Word has length 90 [2024-10-23 19:41:29,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:41:29,121 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 198 transitions. [2024-10-23 19:41:29,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 1.1610738255033557) internal successors, (173), 148 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:41:29,122 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 198 transitions. [2024-10-23 19:41:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-23 19:41:29,123 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:41:29,123 INFO L215 NwaCegarLoop]: trace histogram [98, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:41:29,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-23 19:41:29,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:41:29,324 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:41:29,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:41:29,324 INFO L85 PathProgramCache]: Analyzing trace with hash 598225605, now seen corresponding path program 3 times [2024-10-23 19:41:29,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:41:29,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55699660] [2024-10-23 19:41:29,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:41:29,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:41:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:41:36,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4895 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-23 19:41:36,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:41:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55699660] [2024-10-23 19:41:36,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55699660] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:41:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241115002] [2024-10-23 19:41:36,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 19:41:36,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:41:36,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:41:36,510 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:41:36,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 19:41:36,815 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-23 19:41:36,815 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 19:41:36,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-23 19:41:36,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:41:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4895 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4888 trivial. 0 not checked. [2024-10-23 19:41:37,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:41:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4895 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4888 trivial. 0 not checked. [2024-10-23 19:41:37,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241115002] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:41:37,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:41:37,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 7, 7] total 112 [2024-10-23 19:41:37,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395408023] [2024-10-23 19:41:37,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:41:37,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-10-23 19:41:37,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:41:37,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-10-23 19:41:37,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5905, Invalid=6751, Unknown=0, NotChecked=0, Total=12656 [2024-10-23 19:41:37,639 INFO L87 Difference]: Start difference. First operand 177 states and 198 transitions. Second operand has 113 states, 113 states have (on average 1.5132743362831858) internal successors, (171), 112 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:42:03,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:42:03,122 INFO L93 Difference]: Finished difference Result 1994 states and 2548 transitions. [2024-10-23 19:42:03,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2024-10-23 19:42:03,122 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.5132743362831858) internal successors, (171), 112 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2024-10-23 19:42:03,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:42:03,130 INFO L225 Difference]: With dead ends: 1994 [2024-10-23 19:42:03,130 INFO L226 Difference]: Without dead ends: 1917 [2024-10-23 19:42:03,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 416 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52676 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=54913, Invalid=119393, Unknown=0, NotChecked=0, Total=174306 [2024-10-23 19:42:03,144 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 6398 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 1818 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6398 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 2944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1818 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-23 19:42:03,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6398 Valid, 578 Invalid, 2944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1818 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-23 19:42:03,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2024-10-23 19:42:03,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 778. [2024-10-23 19:42:03,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 1.2831402831402832) internal successors, (997), 777 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:42:03,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 997 transitions. [2024-10-23 19:42:03,295 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 997 transitions. Word has length 140 [2024-10-23 19:42:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:42:03,296 INFO L471 AbstractCegarLoop]: Abstraction has 778 states and 997 transitions. [2024-10-23 19:42:03,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.5132743362831858) internal successors, (171), 112 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:42:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 997 transitions. [2024-10-23 19:42:03,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-23 19:42:03,297 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:42:03,297 INFO L215 NwaCegarLoop]: trace histogram [103, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:42:03,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-23 19:42:03,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:42:03,498 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:42:03,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:42:03,499 INFO L85 PathProgramCache]: Analyzing trace with hash -135265976, now seen corresponding path program 4 times [2024-10-23 19:42:03,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:42:03,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483437087] [2024-10-23 19:42:03,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:42:03,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:42:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:42:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5403 trivial. 0 not checked. [2024-10-23 19:42:03,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:42:03,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483437087] [2024-10-23 19:42:03,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483437087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:42:03,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 19:42:03,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 19:42:03,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34324999] [2024-10-23 19:42:03,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:42:03,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 19:42:03,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:42:03,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 19:42:03,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 19:42:03,736 INFO L87 Difference]: Start difference. First operand 778 states and 997 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:42:03,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:42:03,932 INFO L93 Difference]: Finished difference Result 1289 states and 1709 transitions. [2024-10-23 19:42:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 19:42:03,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-10-23 19:42:03,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:42:03,937 INFO L225 Difference]: With dead ends: 1289 [2024-10-23 19:42:03,937 INFO L226 Difference]: Without dead ends: 778 [2024-10-23 19:42:03,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 19:42:03,940 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:42:03,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 39 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:42:03,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2024-10-23 19:42:04,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 582. [2024-10-23 19:42:04,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 1.2048192771084338) internal successors, (700), 581 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:42:04,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 700 transitions. [2024-10-23 19:42:04,202 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 700 transitions. Word has length 149 [2024-10-23 19:42:04,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:42:04,203 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 700 transitions. [2024-10-23 19:42:04,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:42:04,204 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 700 transitions. [2024-10-23 19:42:04,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-23 19:42:04,207 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:42:04,207 INFO L215 NwaCegarLoop]: trace histogram [103, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:42:04,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 19:42:04,207 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:42:04,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:42:04,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1156334330, now seen corresponding path program 1 times [2024-10-23 19:42:04,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:42:04,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231885459] [2024-10-23 19:42:04,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:42:04,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:42:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:42:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-23 19:42:11,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:42:11,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231885459] [2024-10-23 19:42:11,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231885459] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:42:11,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41393016] [2024-10-23 19:42:11,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:42:11,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:42:11,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:42:11,033 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:42:11,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-23 19:42:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:42:11,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-10-23 19:42:11,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:42:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-23 19:42:16,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:42:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-23 19:42:28,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41393016] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:42:28,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:42:28,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105, 105] total 313 [2024-10-23 19:42:28,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729897596] [2024-10-23 19:42:28,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:42:28,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 314 states [2024-10-23 19:42:28,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:42:28,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 314 interpolants. [2024-10-23 19:42:28,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43888, Invalid=54394, Unknown=0, NotChecked=0, Total=98282 [2024-10-23 19:42:28,229 INFO L87 Difference]: Start difference. First operand 582 states and 700 transitions. Second operand has 314 states, 314 states have (on average 1.0796178343949046) internal successors, (339), 313 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:42:29,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:42:29,002 INFO L93 Difference]: Finished difference Result 1167 states and 1508 transitions. [2024-10-23 19:42:29,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2024-10-23 19:42:29,003 INFO L78 Accepts]: Start accepts. Automaton has has 314 states, 314 states have (on average 1.0796178343949046) internal successors, (339), 313 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-10-23 19:42:29,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:42:29,008 INFO L225 Difference]: With dead ends: 1167 [2024-10-23 19:42:29,008 INFO L226 Difference]: Without dead ends: 690 [2024-10-23 19:42:29,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42950 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=43888, Invalid=54394, Unknown=0, NotChecked=0, Total=98282 [2024-10-23 19:42:29,013 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 19:42:29,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 95 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 19:42:29,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2024-10-23 19:42:29,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 687. [2024-10-23 19:42:29,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 1.1734693877551021) internal successors, (805), 686 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:42:29,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 805 transitions. [2024-10-23 19:42:29,133 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 805 transitions. Word has length 149 [2024-10-23 19:42:29,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:42:29,133 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 805 transitions. [2024-10-23 19:42:29,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 314 states, 314 states have (on average 1.0796178343949046) internal successors, (339), 313 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:42:29,134 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 805 transitions. [2024-10-23 19:42:29,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-10-23 19:42:29,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:42:29,136 INFO L215 NwaCegarLoop]: trace histogram [208, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:42:29,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-23 19:42:29,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-23 19:42:29,337 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:42:29,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:42:29,338 INFO L85 PathProgramCache]: Analyzing trace with hash -419680090, now seen corresponding path program 2 times [2024-10-23 19:42:29,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:42:29,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088300274] [2024-10-23 19:42:29,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:42:29,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:42:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat