./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 12e64e5880a6492945a65c8a75846fcd1e471751df63fa7462470a498bbbc9fb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 04:40:59,631 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 04:40:59,684 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 04:40:59,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 04:40:59,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 04:40:59,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 04:40:59,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 04:40:59,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 04:40:59,718 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 04:40:59,719 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 04:40:59,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 04:40:59,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 04:40:59,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 04:40:59,720 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 04:40:59,721 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 04:40:59,722 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 04:40:59,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 04:40:59,725 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 04:40:59,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 04:40:59,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 04:40:59,726 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 04:40:59,726 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 04:40:59,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 04:40:59,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 04:40:59,727 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 04:40:59,728 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 04:40:59,728 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 04:40:59,728 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 04:40:59,728 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 04:40:59,728 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 04:40:59,729 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 04:40:59,729 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 04:40:59,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 04:40:59,730 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 04:40:59,730 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 04:40:59,730 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 04:40:59,731 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 04:40:59,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 04:40:59,731 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 04:40:59,731 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 04:40:59,731 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 04:40:59,732 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 04:40:59,732 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12e64e5880a6492945a65c8a75846fcd1e471751df63fa7462470a498bbbc9fb [2024-10-11 04:40:59,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 04:40:59,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 04:40:59,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 04:40:59,971 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 04:40:59,972 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 04:40:59,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-10-11 04:41:01,273 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 04:41:01,294 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) [2024-10-11 04:41:01,643 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 04:41:01,644 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-10-11 04:41:01,685 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/89b849da6/e285561aefad4484951563e3a369ad7e/FLAGde1e99096 [2024-10-11 04:41:01,709 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/89b849da6/e285561aefad4484951563e3a369ad7e [2024-10-11 04:41:01,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 04:41:01,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 04:41:01,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 04:41:01,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 04:41:01,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 04:41:01,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:41:01" (1/1) ... [2024-10-11 04:41:01,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb4e81c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:41:01, skipping insertion in model container [2024-10-11 04:41:01,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:41:01" (1/1) ... [2024-10-11 04:41:01,870 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 04:41:02,123 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/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[6487,6500] [2024-10-11 04:41:02,177 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/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[13548,13561] [2024-10-11 04:41:02,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 04:41:02,753 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 04:41:02,776 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/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[6487,6500] [2024-10-11 04:41:02,785 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/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[13548,13561] [2024-10-11 04:41:03,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 04:41:03,113 INFO L204 MainTranslator]: Completed translation [2024-10-11 04:41:03,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:41:03 WrapperNode [2024-10-11 04:41:03,114 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 04:41:03,115 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 04:41:03,115 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 04:41:03,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 04:41:03,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:41:03" (1/1) ... [2024-10-11 04:41:03,165 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:41:03" (1/1) ... [2024-10-11 04:41:03,387 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4984 [2024-10-11 04:41:03,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 04:41:03,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 04:41:03,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 04:41:03,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 04:41:03,398 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:41:03" (1/1) ... [2024-10-11 04:41:03,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:41:03" (1/1) ... [2024-10-11 04:41:03,436 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:41:03" (1/1) ... [2024-10-11 04:41:03,598 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 04:41:03,598 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:41:03" (1/1) ... [2024-10-11 04:41:03,598 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:41:03" (1/1) ... [2024-10-11 04:41:03,715 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:41:03" (1/1) ... [2024-10-11 04:41:03,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:41:03" (1/1) ... [2024-10-11 04:41:03,781 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:41:03" (1/1) ... [2024-10-11 04:41:03,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:41:03" (1/1) ... [2024-10-11 04:41:03,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 04:41:03,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 04:41:03,915 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 04:41:03,915 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 04:41:03,915 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:41:03" (1/1) ... [2024-10-11 04:41:03,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 04:41:03,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:41:03,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 04:41:03,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 04:41:03,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 04:41:03,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 04:41:03,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 04:41:03,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 04:41:04,061 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 04:41:04,063 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 04:41:07,200 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-10-11 04:41:07,200 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 04:41:07,256 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 04:41:07,256 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 04:41:07,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:41:07 BoogieIcfgContainer [2024-10-11 04:41:07,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 04:41:07,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 04:41:07,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 04:41:07,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 04:41:07,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:41:01" (1/3) ... [2024-10-11 04:41:07,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f825862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:41:07, skipping insertion in model container [2024-10-11 04:41:07,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:41:03" (2/3) ... [2024-10-11 04:41:07,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f825862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:41:07, skipping insertion in model container [2024-10-11 04:41:07,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:41:07" (3/3) ... [2024-10-11 04:41:07,264 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-10-11 04:41:07,276 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 04:41:07,277 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 04:41:07,340 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 04:41:07,346 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;@15ae0cbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 04:41:07,346 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 04:41:07,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 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) [2024-10-11 04:41:07,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-11 04:41:07,359 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:07,359 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:07,360 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:07,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:07,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1258292883, now seen corresponding path program 1 times [2024-10-11 04:41:07,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:07,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614274852] [2024-10-11 04:41:07,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:07,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:07,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:07,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614274852] [2024-10-11 04:41:07,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614274852] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:41:07,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:41:07,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 04:41:07,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550068530] [2024-10-11 04:41:07,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:41:07,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 04:41:07,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:07,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 04:41:07,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 04:41:07,599 INFO L87 Difference]: Start difference. First operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 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 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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) [2024-10-11 04:41:07,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:07,697 INFO L93 Difference]: Finished difference Result 1597 states and 3151 transitions. [2024-10-11 04:41:07,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 04:41:07,699 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 17 [2024-10-11 04:41:07,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:07,722 INFO L225 Difference]: With dead ends: 1597 [2024-10-11 04:41:07,722 INFO L226 Difference]: Without dead ends: 805 [2024-10-11 04:41:07,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 04:41:07,734 INFO L432 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:07,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1523 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:41:07,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-10-11 04:41:07,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2024-10-11 04:41:07,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8978829389788294) internal successors, (1524), 804 states have internal predecessors, (1524), 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) [2024-10-11 04:41:07,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1524 transitions. [2024-10-11 04:41:07,809 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1524 transitions. Word has length 17 [2024-10-11 04:41:07,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:07,810 INFO L471 AbstractCegarLoop]: Abstraction has 805 states and 1524 transitions. [2024-10-11 04:41:07,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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) [2024-10-11 04:41:07,810 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1524 transitions. [2024-10-11 04:41:07,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-11 04:41:07,811 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:07,811 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:07,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 04:41:07,811 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:07,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:07,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1845098897, now seen corresponding path program 1 times [2024-10-11 04:41:07,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:07,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468359336] [2024-10-11 04:41:07,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:07,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:07,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:07,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468359336] [2024-10-11 04:41:07,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468359336] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:41:07,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:41:07,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 04:41:07,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912114646] [2024-10-11 04:41:07,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:41:07,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 04:41:07,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:07,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 04:41:07,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 04:41:07,958 INFO L87 Difference]: Start difference. First operand 805 states and 1524 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-10-11 04:41:08,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:08,030 INFO L93 Difference]: Finished difference Result 839 states and 1576 transitions. [2024-10-11 04:41:08,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 04:41:08,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2024-10-11 04:41:08,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:08,033 INFO L225 Difference]: With dead ends: 839 [2024-10-11 04:41:08,034 INFO L226 Difference]: Without dead ends: 805 [2024-10-11 04:41:08,035 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 [2024-10-11 04:41:08,035 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:08,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4543 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:41:08,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-10-11 04:41:08,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2024-10-11 04:41:08,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8779576587795765) internal successors, (1508), 804 states have internal predecessors, (1508), 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) [2024-10-11 04:41:08,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1508 transitions. [2024-10-11 04:41:08,053 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1508 transitions. Word has length 17 [2024-10-11 04:41:08,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:08,053 INFO L471 AbstractCegarLoop]: Abstraction has 805 states and 1508 transitions. [2024-10-11 04:41:08,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-10-11 04:41:08,054 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1508 transitions. [2024-10-11 04:41:08,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 04:41:08,057 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:08,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:08,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 04:41:08,058 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:08,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:08,058 INFO L85 PathProgramCache]: Analyzing trace with hash 249094943, now seen corresponding path program 1 times [2024-10-11 04:41:08,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:08,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010945820] [2024-10-11 04:41:08,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:08,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:08,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:08,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010945820] [2024-10-11 04:41:08,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010945820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:41:08,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:41:08,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 04:41:08,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759011078] [2024-10-11 04:41:08,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:41:08,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 04:41:08,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:08,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 04:41:08,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 04:41:08,176 INFO L87 Difference]: Start difference. First operand 805 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 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) [2024-10-11 04:41:08,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:08,296 INFO L93 Difference]: Finished difference Result 991 states and 1802 transitions. [2024-10-11 04:41:08,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 04:41:08,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 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) Word has length 32 [2024-10-11 04:41:08,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:08,302 INFO L225 Difference]: With dead ends: 991 [2024-10-11 04:41:08,303 INFO L226 Difference]: Without dead ends: 960 [2024-10-11 04:41:08,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-11 04:41:08,306 INFO L432 NwaCegarLoop]: 1499 mSDtfsCounter, 4669 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:08,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 1742 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:41:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2024-10-11 04:41:08,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 834. [2024-10-11 04:41:08,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8677884615384615) internal successors, (1554), 833 states have internal predecessors, (1554), 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) [2024-10-11 04:41:08,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1554 transitions. [2024-10-11 04:41:08,324 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1554 transitions. Word has length 32 [2024-10-11 04:41:08,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:08,327 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1554 transitions. [2024-10-11 04:41:08,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 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) [2024-10-11 04:41:08,327 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1554 transitions. [2024-10-11 04:41:08,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 04:41:08,328 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:08,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:08,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 04:41:08,328 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:08,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:08,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1262463601, now seen corresponding path program 1 times [2024-10-11 04:41:08,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:08,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768452214] [2024-10-11 04:41:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:08,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:08,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:08,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768452214] [2024-10-11 04:41:08,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768452214] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:41:08,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:41:08,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:41:08,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429773829] [2024-10-11 04:41:08,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:41:08,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:41:08,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:41:08,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:41:08,415 INFO L87 Difference]: Start difference. First operand 834 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-10-11 04:41:08,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:08,450 INFO L93 Difference]: Finished difference Result 943 states and 1725 transitions. [2024-10-11 04:41:08,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:41:08,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 [2024-10-11 04:41:08,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:08,454 INFO L225 Difference]: With dead ends: 943 [2024-10-11 04:41:08,454 INFO L226 Difference]: Without dead ends: 883 [2024-10-11 04:41:08,456 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 [2024-10-11 04:41:08,459 INFO L432 NwaCegarLoop]: 1501 mSDtfsCounter, 1466 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:08,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1542 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:41:08,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2024-10-11 04:41:08,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 879. [2024-10-11 04:41:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.8494868871151653) internal successors, (1622), 878 states have internal predecessors, (1622), 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) [2024-10-11 04:41:08,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1622 transitions. [2024-10-11 04:41:08,474 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1622 transitions. Word has length 34 [2024-10-11 04:41:08,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:08,475 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1622 transitions. [2024-10-11 04:41:08,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-10-11 04:41:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1622 transitions. [2024-10-11 04:41:08,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 04:41:08,479 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:08,479 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:08,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 04:41:08,479 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:08,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:08,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1260318649, now seen corresponding path program 1 times [2024-10-11 04:41:08,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:08,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836785121] [2024-10-11 04:41:08,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:08,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:08,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:08,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:08,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836785121] [2024-10-11 04:41:08,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836785121] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:41:08,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:41:08,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 04:41:08,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083034610] [2024-10-11 04:41:08,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:41:08,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 04:41:08,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:08,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 04:41:08,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 04:41:08,665 INFO L87 Difference]: Start difference. First operand 879 states and 1622 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-10-11 04:41:08,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:08,749 INFO L93 Difference]: Finished difference Result 986 states and 1786 transitions. [2024-10-11 04:41:08,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 04:41:08,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 [2024-10-11 04:41:08,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:08,753 INFO L225 Difference]: With dead ends: 986 [2024-10-11 04:41:08,753 INFO L226 Difference]: Without dead ends: 881 [2024-10-11 04:41:08,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:41:08,756 INFO L432 NwaCegarLoop]: 1500 mSDtfsCounter, 4420 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4420 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:08,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4420 Valid, 1588 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:41:08,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-10-11 04:41:08,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2024-10-11 04:41:08,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.847206385404789) internal successors, (1620), 878 states have internal predecessors, (1620), 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) [2024-10-11 04:41:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1620 transitions. [2024-10-11 04:41:08,775 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1620 transitions. Word has length 34 [2024-10-11 04:41:08,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:08,775 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1620 transitions. [2024-10-11 04:41:08,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-10-11 04:41:08,775 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1620 transitions. [2024-10-11 04:41:08,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 04:41:08,776 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:08,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:08,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 04:41:08,776 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:08,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:08,777 INFO L85 PathProgramCache]: Analyzing trace with hash -543584939, now seen corresponding path program 1 times [2024-10-11 04:41:08,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:08,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972085761] [2024-10-11 04:41:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:08,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:08,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:08,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:08,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972085761] [2024-10-11 04:41:08,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972085761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:41:08,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:41:08,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 04:41:08,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281358878] [2024-10-11 04:41:08,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:41:08,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 04:41:08,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:08,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 04:41:08,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 04:41:08,898 INFO L87 Difference]: Start difference. First operand 879 states and 1620 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-10-11 04:41:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:08,937 INFO L93 Difference]: Finished difference Result 885 states and 1627 transitions. [2024-10-11 04:41:08,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 04:41:08,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 35 [2024-10-11 04:41:08,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:08,945 INFO L225 Difference]: With dead ends: 885 [2024-10-11 04:41:08,945 INFO L226 Difference]: Without dead ends: 883 [2024-10-11 04:41:08,947 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 [2024-10-11 04:41:08,947 INFO L432 NwaCegarLoop]: 1504 mSDtfsCounter, 0 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4504 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:08,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4504 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:41:08,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2024-10-11 04:41:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2024-10-11 04:41:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8422247446083995) internal successors, (1623), 882 states have internal predecessors, (1623), 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) [2024-10-11 04:41:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1623 transitions. [2024-10-11 04:41:08,969 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1623 transitions. Word has length 35 [2024-10-11 04:41:08,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:08,971 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1623 transitions. [2024-10-11 04:41:08,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-10-11 04:41:08,971 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1623 transitions. [2024-10-11 04:41:08,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-11 04:41:08,972 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:08,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:08,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 04:41:08,972 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:08,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:08,972 INFO L85 PathProgramCache]: Analyzing trace with hash -709644761, now seen corresponding path program 1 times [2024-10-11 04:41:08,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:08,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982317322] [2024-10-11 04:41:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:08,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:09,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:09,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982317322] [2024-10-11 04:41:09,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982317322] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:41:09,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:41:09,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:41:09,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548993030] [2024-10-11 04:41:09,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:41:09,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:41:09,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:09,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:41:09,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:41:09,013 INFO L87 Difference]: Start difference. First operand 883 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-11 04:41:09,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:09,035 INFO L93 Difference]: Finished difference Result 1085 states and 1923 transitions. [2024-10-11 04:41:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:41:09,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2024-10-11 04:41:09,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:09,038 INFO L225 Difference]: With dead ends: 1085 [2024-10-11 04:41:09,038 INFO L226 Difference]: Without dead ends: 976 [2024-10-11 04:41:09,039 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 [2024-10-11 04:41:09,039 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 1473 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:09,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:41:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2024-10-11 04:41:09,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 974. [2024-10-11 04:41:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 972 states have (on average 1.8045267489711934) internal successors, (1754), 973 states have internal predecessors, (1754), 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) [2024-10-11 04:41:09,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1754 transitions. [2024-10-11 04:41:09,056 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1754 transitions. Word has length 36 [2024-10-11 04:41:09,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:09,057 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 1754 transitions. [2024-10-11 04:41:09,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-11 04:41:09,057 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1754 transitions. [2024-10-11 04:41:09,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-11 04:41:09,057 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:09,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:09,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 04:41:09,058 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:09,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:09,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1598378201, now seen corresponding path program 1 times [2024-10-11 04:41:09,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:09,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457600708] [2024-10-11 04:41:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:09,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:09,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:09,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:09,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457600708] [2024-10-11 04:41:09,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457600708] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:41:09,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:41:09,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:41:09,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929211290] [2024-10-11 04:41:09,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:41:09,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:41:09,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:09,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:41:09,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:41:09,116 INFO L87 Difference]: Start difference. First operand 974 states and 1754 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-11 04:41:09,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:09,144 INFO L93 Difference]: Finished difference Result 1342 states and 2288 transitions. [2024-10-11 04:41:09,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:41:09,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2024-10-11 04:41:09,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:09,150 INFO L225 Difference]: With dead ends: 1342 [2024-10-11 04:41:09,150 INFO L226 Difference]: Without dead ends: 1142 [2024-10-11 04:41:09,151 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 [2024-10-11 04:41:09,151 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 1475 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:09,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1583 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:41:09,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2024-10-11 04:41:09,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1140. [2024-10-11 04:41:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1138 states have (on average 1.7434094903339192) internal successors, (1984), 1139 states have internal predecessors, (1984), 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) [2024-10-11 04:41:09,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1984 transitions. [2024-10-11 04:41:09,175 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1984 transitions. Word has length 36 [2024-10-11 04:41:09,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:09,175 INFO L471 AbstractCegarLoop]: Abstraction has 1140 states and 1984 transitions. [2024-10-11 04:41:09,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-11 04:41:09,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1984 transitions. [2024-10-11 04:41:09,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-11 04:41:09,177 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:09,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:09,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 04:41:09,177 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:09,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:09,178 INFO L85 PathProgramCache]: Analyzing trace with hash -566209588, now seen corresponding path program 1 times [2024-10-11 04:41:09,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:09,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191538758] [2024-10-11 04:41:09,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:09,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:09,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:09,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:09,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191538758] [2024-10-11 04:41:09,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191538758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:41:09,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:41:09,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:41:09,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723758732] [2024-10-11 04:41:09,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:41:09,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:41:09,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:09,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:41:09,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:41:09,225 INFO L87 Difference]: Start difference. First operand 1140 states and 1984 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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) [2024-10-11 04:41:09,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:09,266 INFO L93 Difference]: Finished difference Result 1531 states and 2558 transitions. [2024-10-11 04:41:09,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:41:09,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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 38 [2024-10-11 04:41:09,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:09,271 INFO L225 Difference]: With dead ends: 1531 [2024-10-11 04:41:09,271 INFO L226 Difference]: Without dead ends: 1312 [2024-10-11 04:41:09,273 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 [2024-10-11 04:41:09,273 INFO L432 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:09,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:41:09,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2024-10-11 04:41:09,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2024-10-11 04:41:09,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1308 states have (on average 1.698776758409786) internal successors, (2222), 1309 states have internal predecessors, (2222), 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) [2024-10-11 04:41:09,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2222 transitions. [2024-10-11 04:41:09,303 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2222 transitions. Word has length 38 [2024-10-11 04:41:09,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:09,304 INFO L471 AbstractCegarLoop]: Abstraction has 1310 states and 2222 transitions. [2024-10-11 04:41:09,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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) [2024-10-11 04:41:09,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2222 transitions. [2024-10-11 04:41:09,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-11 04:41:09,304 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:09,305 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:09,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 04:41:09,305 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:09,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:09,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1445833490, now seen corresponding path program 1 times [2024-10-11 04:41:09,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:09,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106355832] [2024-10-11 04:41:09,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:09,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 04:41:09,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:09,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106355832] [2024-10-11 04:41:09,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106355832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:41:09,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:41:09,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 04:41:09,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538308900] [2024-10-11 04:41:09,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:41:09,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 04:41:09,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:09,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 04:41:09,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 04:41:09,412 INFO L87 Difference]: Start difference. First operand 1310 states and 2222 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-10-11 04:41:09,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:09,526 INFO L93 Difference]: Finished difference Result 3034 states and 4670 transitions. [2024-10-11 04:41:09,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 04:41:09,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 50 [2024-10-11 04:41:09,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:09,536 INFO L225 Difference]: With dead ends: 3034 [2024-10-11 04:41:09,536 INFO L226 Difference]: Without dead ends: 2500 [2024-10-11 04:41:09,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:41:09,539 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 3051 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:09,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3138 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:41:09,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2024-10-11 04:41:09,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 1842. [2024-10-11 04:41:09,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1840 states have (on average 1.6141304347826086) internal successors, (2970), 1841 states have internal predecessors, (2970), 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) [2024-10-11 04:41:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2970 transitions. [2024-10-11 04:41:09,602 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2970 transitions. Word has length 50 [2024-10-11 04:41:09,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:09,603 INFO L471 AbstractCegarLoop]: Abstraction has 1842 states and 2970 transitions. [2024-10-11 04:41:09,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-10-11 04:41:09,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2970 transitions. [2024-10-11 04:41:09,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-11 04:41:09,604 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:09,604 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:09,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 04:41:09,604 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:09,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:09,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1960400366, now seen corresponding path program 1 times [2024-10-11 04:41:09,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:09,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323480765] [2024-10-11 04:41:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:09,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 04:41:09,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:09,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323480765] [2024-10-11 04:41:09,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323480765] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:41:09,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:41:09,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 04:41:09,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254192430] [2024-10-11 04:41:09,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:41:09,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 04:41:09,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:09,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 04:41:09,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 04:41:09,712 INFO L87 Difference]: Start difference. First operand 1842 states and 2970 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-10-11 04:41:09,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:09,806 INFO L93 Difference]: Finished difference Result 3566 states and 5418 transitions. [2024-10-11 04:41:09,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 04:41:09,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 50 [2024-10-11 04:41:09,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:09,816 INFO L225 Difference]: With dead ends: 3566 [2024-10-11 04:41:09,816 INFO L226 Difference]: Without dead ends: 3032 [2024-10-11 04:41:09,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:41:09,819 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 3043 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:09,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3153 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:41:09,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2024-10-11 04:41:09,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2642. [2024-10-11 04:41:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 2640 states have (on average 1.5462121212121211) internal successors, (4082), 2641 states have internal predecessors, (4082), 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) [2024-10-11 04:41:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 4082 transitions. [2024-10-11 04:41:09,877 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 4082 transitions. Word has length 50 [2024-10-11 04:41:09,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:09,878 INFO L471 AbstractCegarLoop]: Abstraction has 2642 states and 4082 transitions. [2024-10-11 04:41:09,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-10-11 04:41:09,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 4082 transitions. [2024-10-11 04:41:09,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-11 04:41:09,879 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:09,879 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:09,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 04:41:09,879 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:09,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:09,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2001029718, now seen corresponding path program 1 times [2024-10-11 04:41:09,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:09,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972931899] [2024-10-11 04:41:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:09,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:09,957 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:09,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:09,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972931899] [2024-10-11 04:41:09,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972931899] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:41:09,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:41:09,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:41:09,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815593695] [2024-10-11 04:41:09,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:41:09,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:41:09,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:09,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:41:09,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:41:09,960 INFO L87 Difference]: Start difference. First operand 2642 states and 4082 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-10-11 04:41:09,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:09,998 INFO L93 Difference]: Finished difference Result 4005 states and 6032 transitions. [2024-10-11 04:41:09,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:41:09,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2024-10-11 04:41:09,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:10,005 INFO L225 Difference]: With dead ends: 4005 [2024-10-11 04:41:10,005 INFO L226 Difference]: Without dead ends: 2139 [2024-10-11 04:41:10,007 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 [2024-10-11 04:41:10,008 INFO L432 NwaCegarLoop]: 1529 mSDtfsCounter, 34 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:10,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3020 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:41:10,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2024-10-11 04:41:10,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2137. [2024-10-11 04:41:10,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 2135 states have (on average 1.5836065573770493) internal successors, (3381), 2136 states have internal predecessors, (3381), 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) [2024-10-11 04:41:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3381 transitions. [2024-10-11 04:41:10,055 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3381 transitions. Word has length 52 [2024-10-11 04:41:10,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:10,055 INFO L471 AbstractCegarLoop]: Abstraction has 2137 states and 3381 transitions. [2024-10-11 04:41:10,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-10-11 04:41:10,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3381 transitions. [2024-10-11 04:41:10,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-11 04:41:10,056 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:10,056 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:10,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 04:41:10,056 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:10,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:10,057 INFO L85 PathProgramCache]: Analyzing trace with hash 626025683, now seen corresponding path program 1 times [2024-10-11 04:41:10,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:10,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115375399] [2024-10-11 04:41:10,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:10,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 04:41:10,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:10,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115375399] [2024-10-11 04:41:10,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115375399] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:41:10,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:41:10,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 04:41:10,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625756091] [2024-10-11 04:41:10,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:41:10,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 04:41:10,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:10,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 04:41:10,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 04:41:10,159 INFO L87 Difference]: Start difference. First operand 2137 states and 3381 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-10-11 04:41:10,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:10,241 INFO L93 Difference]: Finished difference Result 3297 states and 5041 transitions. [2024-10-11 04:41:10,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 04:41:10,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 52 [2024-10-11 04:41:10,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:10,249 INFO L225 Difference]: With dead ends: 3297 [2024-10-11 04:41:10,250 INFO L226 Difference]: Without dead ends: 2911 [2024-10-11 04:41:10,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:41:10,252 INFO L432 NwaCegarLoop]: 1541 mSDtfsCounter, 3043 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:10,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3138 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:41:10,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2024-10-11 04:41:10,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2521. [2024-10-11 04:41:10,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2521 states, 2519 states have (on average 1.5581579992060341) internal successors, (3925), 2520 states have internal predecessors, (3925), 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) [2024-10-11 04:41:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 3925 transitions. [2024-10-11 04:41:10,303 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 3925 transitions. Word has length 52 [2024-10-11 04:41:10,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:10,303 INFO L471 AbstractCegarLoop]: Abstraction has 2521 states and 3925 transitions. [2024-10-11 04:41:10,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-10-11 04:41:10,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 3925 transitions. [2024-10-11 04:41:10,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-11 04:41:10,304 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:10,304 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:10,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 04:41:10,305 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:10,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1629170632, now seen corresponding path program 1 times [2024-10-11 04:41:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:10,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595518111] [2024-10-11 04:41:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:10,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:10,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:10,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595518111] [2024-10-11 04:41:10,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595518111] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:41:10,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:41:10,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:41:10,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668488703] [2024-10-11 04:41:10,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:41:10,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:41:10,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:10,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:41:10,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:41:10,381 INFO L87 Difference]: Start difference. First operand 2521 states and 3925 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2024-10-11 04:41:10,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:10,413 INFO L93 Difference]: Finished difference Result 3389 states and 5151 transitions. [2024-10-11 04:41:10,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:41:10,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2024-10-11 04:41:10,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:10,418 INFO L225 Difference]: With dead ends: 3389 [2024-10-11 04:41:10,419 INFO L226 Difference]: Without dead ends: 1659 [2024-10-11 04:41:10,420 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 [2024-10-11 04:41:10,421 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 29 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:10,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3005 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:41:10,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2024-10-11 04:41:10,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1657. [2024-10-11 04:41:10,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1655 states have (on average 1.6211480362537765) internal successors, (2683), 1656 states have internal predecessors, (2683), 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) [2024-10-11 04:41:10,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2683 transitions. [2024-10-11 04:41:10,450 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2683 transitions. Word has length 53 [2024-10-11 04:41:10,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:10,451 INFO L471 AbstractCegarLoop]: Abstraction has 1657 states and 2683 transitions. [2024-10-11 04:41:10,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2024-10-11 04:41:10,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2683 transitions. [2024-10-11 04:41:10,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 04:41:10,451 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:10,451 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:10,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 04:41:10,452 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:10,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:10,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1014743962, now seen corresponding path program 1 times [2024-10-11 04:41:10,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:10,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536667098] [2024-10-11 04:41:10,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:10,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:10,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:10,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536667098] [2024-10-11 04:41:10,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536667098] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:41:10,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:41:10,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:41:10,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577655368] [2024-10-11 04:41:10,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:41:10,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:41:10,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:10,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:41:10,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:41:10,509 INFO L87 Difference]: Start difference. First operand 1657 states and 2683 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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) [2024-10-11 04:41:10,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:10,535 INFO L93 Difference]: Finished difference Result 2093 states and 3288 transitions. [2024-10-11 04:41:10,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:41:10,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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) Word has length 55 [2024-10-11 04:41:10,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:10,539 INFO L225 Difference]: With dead ends: 2093 [2024-10-11 04:41:10,539 INFO L226 Difference]: Without dead ends: 1227 [2024-10-11 04:41:10,541 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 [2024-10-11 04:41:10,542 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 26 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:10,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2990 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:41:10,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2024-10-11 04:41:10,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1225. [2024-10-11 04:41:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1223 states have (on average 1.6933769419460343) internal successors, (2071), 1224 states have internal predecessors, (2071), 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) [2024-10-11 04:41:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2071 transitions. [2024-10-11 04:41:10,562 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2071 transitions. Word has length 55 [2024-10-11 04:41:10,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:10,563 INFO L471 AbstractCegarLoop]: Abstraction has 1225 states and 2071 transitions. [2024-10-11 04:41:10,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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) [2024-10-11 04:41:10,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2071 transitions. [2024-10-11 04:41:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-11 04:41:10,563 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:10,564 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:10,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 04:41:10,564 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:10,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:10,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1240304108, now seen corresponding path program 1 times [2024-10-11 04:41:10,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:10,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664562992] [2024-10-11 04:41:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:10,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:12,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:12,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664562992] [2024-10-11 04:41:12,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664562992] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:41:12,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329172106] [2024-10-11 04:41:12,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:12,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:41:12,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:41:12,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:41:12,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 04:41:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:12,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 04:41:12,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:41:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 04:41:12,252 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:41:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 04:41:12,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329172106] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:41:12,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:41:12,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2024-10-11 04:41:12,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124847549] [2024-10-11 04:41:12,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:41:12,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 04:41:12,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:12,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 04:41:12,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-10-11 04:41:12,378 INFO L87 Difference]: Start difference. First operand 1225 states and 2071 transitions. Second operand has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 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) [2024-10-11 04:41:14,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:14,841 INFO L93 Difference]: Finished difference Result 3534 states and 5153 transitions. [2024-10-11 04:41:14,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-11 04:41:14,845 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 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 57 [2024-10-11 04:41:14,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:14,857 INFO L225 Difference]: With dead ends: 3534 [2024-10-11 04:41:14,857 INFO L226 Difference]: Without dead ends: 3100 [2024-10-11 04:41:14,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=719, Invalid=3063, Unknown=0, NotChecked=0, Total=3782 [2024-10-11 04:41:14,860 INFO L432 NwaCegarLoop]: 1492 mSDtfsCounter, 14185 mSDsluCounter, 6142 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14185 SdHoareTripleChecker+Valid, 7634 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:14,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14185 Valid, 7634 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 04:41:14,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2024-10-11 04:41:14,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 3022. [2024-10-11 04:41:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 3020 states have (on average 1.429139072847682) internal successors, (4316), 3021 states have internal predecessors, (4316), 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) [2024-10-11 04:41:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 4316 transitions. [2024-10-11 04:41:14,966 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 4316 transitions. Word has length 57 [2024-10-11 04:41:14,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:14,967 INFO L471 AbstractCegarLoop]: Abstraction has 3022 states and 4316 transitions. [2024-10-11 04:41:14,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 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) [2024-10-11 04:41:14,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 4316 transitions. [2024-10-11 04:41:14,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-11 04:41:14,968 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:14,968 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:14,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 04:41:15,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 04:41:15,169 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:15,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:15,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1654003359, now seen corresponding path program 1 times [2024-10-11 04:41:15,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:15,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806696141] [2024-10-11 04:41:15,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:15,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:16,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:16,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:16,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806696141] [2024-10-11 04:41:16,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806696141] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:41:16,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834844676] [2024-10-11 04:41:16,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:16,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:41:16,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:41:16,784 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:41:16,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 04:41:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:16,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 04:41:16,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:41:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:17,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:41:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:17,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834844676] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:41:17,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:41:17,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-10-11 04:41:17,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741264281] [2024-10-11 04:41:17,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:41:17,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 04:41:17,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:17,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 04:41:17,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2024-10-11 04:41:17,684 INFO L87 Difference]: Start difference. First operand 3022 states and 4316 transitions. Second operand has 26 states, 26 states have (on average 5.423076923076923) internal successors, (141), 25 states have internal predecessors, (141), 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) [2024-10-11 04:41:18,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:18,212 INFO L93 Difference]: Finished difference Result 6887 states and 9264 transitions. [2024-10-11 04:41:18,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 04:41:18,213 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.423076923076923) internal successors, (141), 25 states have internal predecessors, (141), 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 58 [2024-10-11 04:41:18,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:18,224 INFO L225 Difference]: With dead ends: 6887 [2024-10-11 04:41:18,224 INFO L226 Difference]: Without dead ends: 5046 [2024-10-11 04:41:18,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=298, Invalid=1034, Unknown=0, NotChecked=0, Total=1332 [2024-10-11 04:41:18,228 INFO L432 NwaCegarLoop]: 1489 mSDtfsCounter, 10441 mSDsluCounter, 3232 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10441 SdHoareTripleChecker+Valid, 4721 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:18,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10441 Valid, 4721 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 04:41:18,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5046 states. [2024-10-11 04:41:18,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5046 to 4980. [2024-10-11 04:41:18,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4980 states, 4978 states have (on average 1.3501406187223786) internal successors, (6721), 4979 states have internal predecessors, (6721), 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) [2024-10-11 04:41:18,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4980 states to 4980 states and 6721 transitions. [2024-10-11 04:41:18,350 INFO L78 Accepts]: Start accepts. Automaton has 4980 states and 6721 transitions. Word has length 58 [2024-10-11 04:41:18,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:18,351 INFO L471 AbstractCegarLoop]: Abstraction has 4980 states and 6721 transitions. [2024-10-11 04:41:18,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.423076923076923) internal successors, (141), 25 states have internal predecessors, (141), 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) [2024-10-11 04:41:18,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4980 states and 6721 transitions. [2024-10-11 04:41:18,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-11 04:41:18,352 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:18,352 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:18,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 04:41:18,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 04:41:18,553 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:18,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:18,553 INFO L85 PathProgramCache]: Analyzing trace with hash 983464685, now seen corresponding path program 1 times [2024-10-11 04:41:18,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:18,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150986989] [2024-10-11 04:41:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:18,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:18,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:18,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150986989] [2024-10-11 04:41:18,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150986989] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:41:18,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6737007] [2024-10-11 04:41:18,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:18,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:41:18,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:41:18,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:41:18,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 04:41:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:18,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 04:41:18,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:41:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:19,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:41:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:19,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6737007] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:41:19,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:41:19,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-10-11 04:41:19,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491288865] [2024-10-11 04:41:19,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:41:19,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-11 04:41:19,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:19,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-11 04:41:19,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-10-11 04:41:19,924 INFO L87 Difference]: Start difference. First operand 4980 states and 6721 transitions. Second operand has 32 states, 32 states have (on average 4.65625) internal successors, (149), 32 states have internal predecessors, (149), 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) [2024-10-11 04:41:22,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:22,271 INFO L93 Difference]: Finished difference Result 12433 states and 16213 transitions. [2024-10-11 04:41:22,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-10-11 04:41:22,271 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.65625) internal successors, (149), 32 states have internal predecessors, (149), 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 58 [2024-10-11 04:41:22,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:22,286 INFO L225 Difference]: With dead ends: 12433 [2024-10-11 04:41:22,286 INFO L226 Difference]: Without dead ends: 8709 [2024-10-11 04:41:22,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1214, Invalid=5592, Unknown=0, NotChecked=0, Total=6806 [2024-10-11 04:41:22,293 INFO L432 NwaCegarLoop]: 1502 mSDtfsCounter, 14443 mSDsluCounter, 16793 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14443 SdHoareTripleChecker+Valid, 18295 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:22,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14443 Valid, 18295 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 04:41:22,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8709 states. [2024-10-11 04:41:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8709 to 5563. [2024-10-11 04:41:22,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5563 states, 5561 states have (on average 1.3416651681352274) internal successors, (7461), 5562 states have internal predecessors, (7461), 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) [2024-10-11 04:41:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5563 states to 5563 states and 7461 transitions. [2024-10-11 04:41:22,450 INFO L78 Accepts]: Start accepts. Automaton has 5563 states and 7461 transitions. Word has length 58 [2024-10-11 04:41:22,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:22,450 INFO L471 AbstractCegarLoop]: Abstraction has 5563 states and 7461 transitions. [2024-10-11 04:41:22,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.65625) internal successors, (149), 32 states have internal predecessors, (149), 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) [2024-10-11 04:41:22,450 INFO L276 IsEmpty]: Start isEmpty. Operand 5563 states and 7461 transitions. [2024-10-11 04:41:22,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-11 04:41:22,451 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:22,451 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:22,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 04:41:22,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:41:22,652 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:22,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:22,652 INFO L85 PathProgramCache]: Analyzing trace with hash -121514552, now seen corresponding path program 1 times [2024-10-11 04:41:22,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:22,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176202492] [2024-10-11 04:41:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:22,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:22,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:22,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176202492] [2024-10-11 04:41:22,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176202492] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:41:22,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071653843] [2024-10-11 04:41:22,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:22,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:41:22,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:41:22,897 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:41:22,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 04:41:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:22,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 04:41:22,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:41:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:23,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:41:23,638 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:23,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071653843] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:41:23,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:41:23,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-10-11 04:41:23,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051519701] [2024-10-11 04:41:23,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:41:23,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 04:41:23,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:23,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 04:41:23,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-10-11 04:41:23,642 INFO L87 Difference]: Start difference. First operand 5563 states and 7461 transitions. Second operand has 21 states, 21 states have (on average 6.190476190476191) internal successors, (130), 20 states have internal predecessors, (130), 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) [2024-10-11 04:41:24,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:24,124 INFO L93 Difference]: Finished difference Result 9785 states and 12812 transitions. [2024-10-11 04:41:24,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 04:41:24,124 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.190476190476191) internal successors, (130), 20 states have internal predecessors, (130), 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 59 [2024-10-11 04:41:24,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:24,133 INFO L225 Difference]: With dead ends: 9785 [2024-10-11 04:41:24,133 INFO L226 Difference]: Without dead ends: 5783 [2024-10-11 04:41:24,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=243, Invalid=749, Unknown=0, NotChecked=0, Total=992 [2024-10-11 04:41:24,142 INFO L432 NwaCegarLoop]: 1495 mSDtfsCounter, 10596 mSDsluCounter, 4744 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10596 SdHoareTripleChecker+Valid, 6239 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:24,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10596 Valid, 6239 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 04:41:24,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5783 states. [2024-10-11 04:41:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5783 to 5517. [2024-10-11 04:41:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5517 states, 5515 states have (on average 1.3309156844968268) internal successors, (7340), 5516 states have internal predecessors, (7340), 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) [2024-10-11 04:41:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 7340 transitions. [2024-10-11 04:41:24,283 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 7340 transitions. Word has length 59 [2024-10-11 04:41:24,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:24,283 INFO L471 AbstractCegarLoop]: Abstraction has 5517 states and 7340 transitions. [2024-10-11 04:41:24,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.190476190476191) internal successors, (130), 20 states have internal predecessors, (130), 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) [2024-10-11 04:41:24,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 7340 transitions. [2024-10-11 04:41:24,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-11 04:41:24,284 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:24,284 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:24,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 04:41:24,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:41:24,486 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:24,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:24,486 INFO L85 PathProgramCache]: Analyzing trace with hash -644118762, now seen corresponding path program 1 times [2024-10-11 04:41:24,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:24,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148418193] [2024-10-11 04:41:24,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:24,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:24,975 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:24,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:24,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148418193] [2024-10-11 04:41:24,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148418193] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:41:24,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076490264] [2024-10-11 04:41:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:24,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:41:24,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:41:24,977 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:41:24,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 04:41:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:25,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-11 04:41:25,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:41:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:26,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:41:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:28,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076490264] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:41:28,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:41:28,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18, 17] total 43 [2024-10-11 04:41:28,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362176311] [2024-10-11 04:41:28,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:41:28,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-11 04:41:28,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:28,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-11 04:41:28,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1585, Unknown=0, NotChecked=0, Total=1806 [2024-10-11 04:41:28,392 INFO L87 Difference]: Start difference. First operand 5517 states and 7340 transitions. Second operand has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 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) [2024-10-11 04:41:30,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:30,757 INFO L93 Difference]: Finished difference Result 6775 states and 8936 transitions. [2024-10-11 04:41:30,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-11 04:41:30,757 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 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 59 [2024-10-11 04:41:30,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:30,763 INFO L225 Difference]: With dead ends: 6775 [2024-10-11 04:41:30,763 INFO L226 Difference]: Without dead ends: 3528 [2024-10-11 04:41:30,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1035, Invalid=4221, Unknown=0, NotChecked=0, Total=5256 [2024-10-11 04:41:30,768 INFO L432 NwaCegarLoop]: 1474 mSDtfsCounter, 22574 mSDsluCounter, 17870 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22574 SdHoareTripleChecker+Valid, 19344 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:30,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22574 Valid, 19344 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 04:41:30,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2024-10-11 04:41:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3524. [2024-10-11 04:41:30,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3524 states, 3522 states have (on average 1.3852924474730266) internal successors, (4879), 3523 states have internal predecessors, (4879), 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) [2024-10-11 04:41:30,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3524 states to 3524 states and 4879 transitions. [2024-10-11 04:41:30,861 INFO L78 Accepts]: Start accepts. Automaton has 3524 states and 4879 transitions. Word has length 59 [2024-10-11 04:41:30,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:30,861 INFO L471 AbstractCegarLoop]: Abstraction has 3524 states and 4879 transitions. [2024-10-11 04:41:30,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 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) [2024-10-11 04:41:30,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3524 states and 4879 transitions. [2024-10-11 04:41:30,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-11 04:41:30,862 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:30,862 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:30,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 04:41:31,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:41:31,066 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:31,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:31,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1584056393, now seen corresponding path program 1 times [2024-10-11 04:41:31,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:31,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685715038] [2024-10-11 04:41:31,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:31,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:31,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:31,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685715038] [2024-10-11 04:41:31,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685715038] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:41:31,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:41:31,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 04:41:31,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720407231] [2024-10-11 04:41:31,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:41:31,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:41:31,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:31,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:41:31,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:41:31,115 INFO L87 Difference]: Start difference. First operand 3524 states and 4879 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 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) [2024-10-11 04:41:33,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:33,502 INFO L93 Difference]: Finished difference Result 5028 states and 7752 transitions. [2024-10-11 04:41:33,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:41:33,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 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 60 [2024-10-11 04:41:33,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:33,509 INFO L225 Difference]: With dead ends: 5028 [2024-10-11 04:41:33,509 INFO L226 Difference]: Without dead ends: 4275 [2024-10-11 04:41:33,510 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 [2024-10-11 04:41:33,511 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 824 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:33,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 143 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-11 04:41:33,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2024-10-11 04:41:33,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 4275. [2024-10-11 04:41:33,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4275 states, 4273 states have (on average 1.4636087058272875) internal successors, (6254), 4274 states have internal predecessors, (6254), 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) [2024-10-11 04:41:33,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4275 states to 4275 states and 6254 transitions. [2024-10-11 04:41:33,612 INFO L78 Accepts]: Start accepts. Automaton has 4275 states and 6254 transitions. Word has length 60 [2024-10-11 04:41:33,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:33,612 INFO L471 AbstractCegarLoop]: Abstraction has 4275 states and 6254 transitions. [2024-10-11 04:41:33,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 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) [2024-10-11 04:41:33,612 INFO L276 IsEmpty]: Start isEmpty. Operand 4275 states and 6254 transitions. [2024-10-11 04:41:33,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 04:41:33,612 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:33,613 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:33,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 04:41:33,613 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:33,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:33,614 INFO L85 PathProgramCache]: Analyzing trace with hash 916843100, now seen corresponding path program 1 times [2024-10-11 04:41:33,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:33,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354548251] [2024-10-11 04:41:33,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:33,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:34,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:34,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354548251] [2024-10-11 04:41:34,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354548251] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:41:34,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480153460] [2024-10-11 04:41:34,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:34,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:41:34,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:41:34,807 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:41:34,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 04:41:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:34,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-11 04:41:34,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:41:37,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:37,690 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:41:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:40,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480153460] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:41:40,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:41:40,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 57 [2024-10-11 04:41:40,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653076721] [2024-10-11 04:41:40,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:41:40,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-10-11 04:41:40,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:40,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-10-11 04:41:40,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=2885, Unknown=0, NotChecked=0, Total=3192 [2024-10-11 04:41:40,618 INFO L87 Difference]: Start difference. First operand 4275 states and 6254 transitions. Second operand has 57 states, 57 states have (on average 2.824561403508772) internal successors, (161), 57 states have internal predecessors, (161), 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) [2024-10-11 04:41:56,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:41:56,865 INFO L93 Difference]: Finished difference Result 8896 states and 12156 transitions. [2024-10-11 04:41:56,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-10-11 04:41:56,866 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.824561403508772) internal successors, (161), 57 states have internal predecessors, (161), 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 61 [2024-10-11 04:41:56,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:41:56,879 INFO L225 Difference]: With dead ends: 8896 [2024-10-11 04:41:56,879 INFO L226 Difference]: Without dead ends: 7568 [2024-10-11 04:41:56,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4759 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=3021, Invalid=13491, Unknown=0, NotChecked=0, Total=16512 [2024-10-11 04:41:56,885 INFO L432 NwaCegarLoop]: 1470 mSDtfsCounter, 20527 mSDsluCounter, 22800 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20527 SdHoareTripleChecker+Valid, 24270 SdHoareTripleChecker+Invalid, 2261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-11 04:41:56,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20527 Valid, 24270 Invalid, 2261 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-11 04:41:56,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7568 states. [2024-10-11 04:41:57,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7568 to 5748. [2024-10-11 04:41:57,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5748 states, 5746 states have (on average 1.4209885137486948) internal successors, (8165), 5747 states have internal predecessors, (8165), 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) [2024-10-11 04:41:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5748 states to 5748 states and 8165 transitions. [2024-10-11 04:41:57,110 INFO L78 Accepts]: Start accepts. Automaton has 5748 states and 8165 transitions. Word has length 61 [2024-10-11 04:41:57,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:41:57,111 INFO L471 AbstractCegarLoop]: Abstraction has 5748 states and 8165 transitions. [2024-10-11 04:41:57,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.824561403508772) internal successors, (161), 57 states have internal predecessors, (161), 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) [2024-10-11 04:41:57,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5748 states and 8165 transitions. [2024-10-11 04:41:57,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-11 04:41:57,116 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:41:57,116 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:41:57,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 04:41:57,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-11 04:41:57,316 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:41:57,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:41:57,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1767313277, now seen corresponding path program 1 times [2024-10-11 04:41:57,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:41:57,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648011376] [2024-10-11 04:41:57,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:57,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:41:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:57,862 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:57,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:41:57,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648011376] [2024-10-11 04:41:57,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648011376] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:41:57,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348455686] [2024-10-11 04:41:57,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:41:57,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:41:57,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:41:57,864 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:41:57,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 04:41:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:41:57,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 04:41:57,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:41:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 30 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:58,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:41:59,712 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:41:59,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348455686] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:41:59,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:41:59,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-10-11 04:41:59,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803805276] [2024-10-11 04:41:59,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:41:59,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 04:41:59,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:41:59,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 04:41:59,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-10-11 04:41:59,713 INFO L87 Difference]: Start difference. First operand 5748 states and 8165 transitions. Second operand has 27 states, 27 states have (on average 7.888888888888889) internal successors, (213), 26 states have internal predecessors, (213), 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) [2024-10-11 04:42:00,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:42:00,584 INFO L93 Difference]: Finished difference Result 14442 states and 19277 transitions. [2024-10-11 04:42:00,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 04:42:00,585 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.888888888888889) internal successors, (213), 26 states have internal predecessors, (213), 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 97 [2024-10-11 04:42:00,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:42:00,597 INFO L225 Difference]: With dead ends: 14442 [2024-10-11 04:42:00,598 INFO L226 Difference]: Without dead ends: 10608 [2024-10-11 04:42:00,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=379, Invalid=1343, Unknown=0, NotChecked=0, Total=1722 [2024-10-11 04:42:00,602 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 11938 mSDsluCounter, 10561 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11938 SdHoareTripleChecker+Valid, 12066 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 04:42:00,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11938 Valid, 12066 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 04:42:00,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10608 states. [2024-10-11 04:42:01,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10608 to 9908. [2024-10-11 04:42:01,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9908 states, 9906 states have (on average 1.3406016555622855) internal successors, (13280), 9907 states have internal predecessors, (13280), 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) [2024-10-11 04:42:01,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9908 states to 9908 states and 13280 transitions. [2024-10-11 04:42:01,033 INFO L78 Accepts]: Start accepts. Automaton has 9908 states and 13280 transitions. Word has length 97 [2024-10-11 04:42:01,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:42:01,034 INFO L471 AbstractCegarLoop]: Abstraction has 9908 states and 13280 transitions. [2024-10-11 04:42:01,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.888888888888889) internal successors, (213), 26 states have internal predecessors, (213), 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) [2024-10-11 04:42:01,034 INFO L276 IsEmpty]: Start isEmpty. Operand 9908 states and 13280 transitions. [2024-10-11 04:42:01,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-11 04:42:01,038 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:42:01,038 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:42:01,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 04:42:01,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:42:01,239 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:42:01,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:42:01,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1619378813, now seen corresponding path program 1 times [2024-10-11 04:42:01,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:42:01,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654093195] [2024-10-11 04:42:01,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:42:01,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:42:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:42:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:42:01,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:42:01,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654093195] [2024-10-11 04:42:01,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654093195] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:42:01,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859330986] [2024-10-11 04:42:01,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:42:01,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:42:01,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:42:01,759 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:42:01,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 04:42:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:42:01,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 04:42:01,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:42:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 21 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:42:02,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:42:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:42:03,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859330986] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:42:03,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:42:03,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-10-11 04:42:03,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216558958] [2024-10-11 04:42:03,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:42:03,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 04:42:03,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:42:03,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 04:42:03,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2024-10-11 04:42:03,444 INFO L87 Difference]: Start difference. First operand 9908 states and 13280 transitions. Second operand has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 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) [2024-10-11 04:42:04,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:42:04,491 INFO L93 Difference]: Finished difference Result 13814 states and 18245 transitions. [2024-10-11 04:42:04,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 04:42:04,491 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 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 97 [2024-10-11 04:42:04,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:42:04,503 INFO L225 Difference]: With dead ends: 13814 [2024-10-11 04:42:04,503 INFO L226 Difference]: Without dead ends: 10076 [2024-10-11 04:42:04,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2024-10-11 04:42:04,510 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 14884 mSDsluCounter, 10555 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14884 SdHoareTripleChecker+Valid, 12060 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 04:42:04,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14884 Valid, 12060 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 04:42:04,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10076 states. [2024-10-11 04:42:04,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10076 to 5858. [2024-10-11 04:42:04,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5858 states, 5856 states have (on average 1.3966871584699454) internal successors, (8179), 5857 states have internal predecessors, (8179), 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) [2024-10-11 04:42:04,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 8179 transitions. [2024-10-11 04:42:04,820 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 8179 transitions. Word has length 97 [2024-10-11 04:42:04,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:42:04,821 INFO L471 AbstractCegarLoop]: Abstraction has 5858 states and 8179 transitions. [2024-10-11 04:42:04,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 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) [2024-10-11 04:42:04,821 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 8179 transitions. [2024-10-11 04:42:04,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-11 04:42:04,822 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:42:04,822 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:42:04,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 04:42:05,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-11 04:42:05,023 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:42:05,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:42:05,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1096774603, now seen corresponding path program 1 times [2024-10-11 04:42:05,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:42:05,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741845148] [2024-10-11 04:42:05,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:42:05,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:42:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:42:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:42:05,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:42:05,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741845148] [2024-10-11 04:42:05,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741845148] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:42:05,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177309710] [2024-10-11 04:42:05,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:42:05,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:42:05,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:42:05,671 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:42:05,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 04:42:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:42:05,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 04:42:05,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:42:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 35 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:42:06,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:42:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:42:07,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177309710] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:42:07,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:42:07,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2024-10-11 04:42:07,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137040668] [2024-10-11 04:42:07,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:42:07,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-11 04:42:07,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:42:07,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-11 04:42:07,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2024-10-11 04:42:07,447 INFO L87 Difference]: Start difference. First operand 5858 states and 8179 transitions. Second operand has 31 states, 31 states have (on average 7.354838709677419) internal successors, (228), 30 states have internal predecessors, (228), 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) [2024-10-11 04:42:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:42:08,994 INFO L93 Difference]: Finished difference Result 10734 states and 14225 transitions. [2024-10-11 04:42:08,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 04:42:08,994 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.354838709677419) internal successors, (228), 30 states have internal predecessors, (228), 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 97 [2024-10-11 04:42:08,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:42:09,003 INFO L225 Difference]: With dead ends: 10734 [2024-10-11 04:42:09,003 INFO L226 Difference]: Without dead ends: 7958 [2024-10-11 04:42:09,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=666, Invalid=2414, Unknown=0, NotChecked=0, Total=3080 [2024-10-11 04:42:09,009 INFO L432 NwaCegarLoop]: 1531 mSDtfsCounter, 11975 mSDsluCounter, 13815 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11975 SdHoareTripleChecker+Valid, 15346 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 04:42:09,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11975 Valid, 15346 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 04:42:09,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7958 states. [2024-10-11 04:42:09,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7958 to 4918. [2024-10-11 04:42:09,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4918 states, 4916 states have (on average 1.4180227827502034) internal successors, (6971), 4917 states have internal predecessors, (6971), 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) [2024-10-11 04:42:09,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4918 states to 4918 states and 6971 transitions. [2024-10-11 04:42:09,328 INFO L78 Accepts]: Start accepts. Automaton has 4918 states and 6971 transitions. Word has length 97 [2024-10-11 04:42:09,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:42:09,328 INFO L471 AbstractCegarLoop]: Abstraction has 4918 states and 6971 transitions. [2024-10-11 04:42:09,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.354838709677419) internal successors, (228), 30 states have internal predecessors, (228), 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) [2024-10-11 04:42:09,329 INFO L276 IsEmpty]: Start isEmpty. Operand 4918 states and 6971 transitions. [2024-10-11 04:42:09,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-11 04:42:09,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:42:09,330 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:42:09,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 04:42:09,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:42:09,531 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:42:09,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:42:09,531 INFO L85 PathProgramCache]: Analyzing trace with hash -954248108, now seen corresponding path program 1 times [2024-10-11 04:42:09,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:42:09,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248384333] [2024-10-11 04:42:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:42:09,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:42:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:42:10,351 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:42:10,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:42:10,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248384333] [2024-10-11 04:42:10,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248384333] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:42:10,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920654735] [2024-10-11 04:42:10,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:42:10,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:42:10,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:42:10,353 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:42:10,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 04:42:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:42:10,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-11 04:42:10,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:42:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:42:12,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:42:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:42:15,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920654735] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:42:15,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:42:15,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 19] total 58 [2024-10-11 04:42:15,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826215585] [2024-10-11 04:42:15,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:42:15,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-10-11 04:42:15,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:42:15,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-10-11 04:42:15,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=3067, Unknown=0, NotChecked=0, Total=3306 [2024-10-11 04:42:15,316 INFO L87 Difference]: Start difference. First operand 4918 states and 6971 transitions. Second operand has 58 states, 58 states have (on average 4.758620689655173) internal successors, (276), 58 states have internal predecessors, (276), 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)