./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label16.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label16.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 12946011ae947529b791d0ea774eddb13cd60d584cd7e2008a422f41653953d6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:17:21,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:17:21,850 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:17:21,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:17:21,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:17:21,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:17:21,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:17:21,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:17:21,879 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:17:21,882 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:17:21,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:17:21,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:17:21,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:17:21,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:17:21,886 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:17:21,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:17:21,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:17:21,887 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:17:21,887 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:17:21,888 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:17:21,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:17:21,892 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:17:21,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:17:21,893 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:17:21,893 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:17:21,893 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:17:21,893 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:17:21,894 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:17:21,894 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:17:21,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:17:21,895 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:17:21,895 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:17:21,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:17:21,895 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:17:21,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:17:21,896 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:17:21,896 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:17:21,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:17:21,897 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:17:21,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:17:21,897 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:17:21,898 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:17:21,898 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12946011ae947529b791d0ea774eddb13cd60d584cd7e2008a422f41653953d6 [2024-11-16 04:17:22,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:17:22,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:17:22,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:17:22,190 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:17:22,190 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:17:22,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label16.c [2024-11-16 04:17:23,701 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:17:23,719 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) [2024-11-16 04:17:24,062 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:17:24,063 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label16.c [2024-11-16 04:17:24,092 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8edb1dc78/cb576f7b9d3e4c448218c402ae347750/FLAG4e879f7f9 [2024-11-16 04:17:24,267 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8edb1dc78/cb576f7b9d3e4c448218c402ae347750 [2024-11-16 04:17:24,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:17:24,273 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:17:24,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:17:24,275 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:17:24,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:17:24,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:17:24" (1/1) ... [2024-11-16 04:17:24,283 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27a760da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:24, skipping insertion in model container [2024-11-16 04:17:24,283 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:17:24" (1/1) ... [2024-11-16 04:17:24,365 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:17:24,612 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label16.c[3929,3942] [2024-11-16 04:17:25,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:17:25,196 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:17:25,218 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label16.c[3929,3942] [2024-11-16 04:17:25,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:17:25,496 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:17:25,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:25 WrapperNode [2024-11-16 04:17:25,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:17:25,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:17:25,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:17:25,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:17:25,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:25" (1/1) ... [2024-11-16 04:17:25,548 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:25" (1/1) ... [2024-11-16 04:17:25,835 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-16 04:17:25,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:17:25,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:17:25,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:17:25,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:17:25,859 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:25" (1/1) ... [2024-11-16 04:17:25,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:25" (1/1) ... [2024-11-16 04:17:25,959 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:25" (1/1) ... [2024-11-16 04:17:26,237 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]. [2024-11-16 04:17:26,238 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:25" (1/1) ... [2024-11-16 04:17:26,238 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:25" (1/1) ... [2024-11-16 04:17:26,355 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:25" (1/1) ... [2024-11-16 04:17:26,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:25" (1/1) ... [2024-11-16 04:17:26,392 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:25" (1/1) ... [2024-11-16 04:17:26,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:25" (1/1) ... [2024-11-16 04:17:26,444 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:17:26,445 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:17:26,446 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:17:26,446 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:17:26,447 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:25" (1/1) ... [2024-11-16 04:17:26,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:17:26,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:17:26,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 04:17:26,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 04:17:26,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:17:26,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:17:26,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:17:26,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:17:26,614 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:17:26,616 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:17:30,027 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-16 04:17:30,187 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-16 04:17:30,187 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:17:30,221 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:17:30,222 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:17:30,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:17:30 BoogieIcfgContainer [2024-11-16 04:17:30,222 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:17:30,224 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:17:30,224 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:17:30,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:17:30,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:17:24" (1/3) ... [2024-11-16 04:17:30,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdd5181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:17:30, skipping insertion in model container [2024-11-16 04:17:30,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:25" (2/3) ... [2024-11-16 04:17:30,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdd5181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:17:30, skipping insertion in model container [2024-11-16 04:17:30,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:17:30" (3/3) ... [2024-11-16 04:17:30,233 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label16.c [2024-11-16 04:17:30,253 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:17:30,254 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:17:30,344 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:17:30,353 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;@147b76e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:17:30,354 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:17:30,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 1.8020304568527918) internal successors, (1065), 592 states have internal predecessors, (1065), 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) [2024-11-16 04:17:30,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 04:17:30,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:30,373 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] [2024-11-16 04:17:30,374 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:30,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:30,381 INFO L85 PathProgramCache]: Analyzing trace with hash -80204844, now seen corresponding path program 1 times [2024-11-16 04:17:30,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:30,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915584707] [2024-11-16 04:17:30,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:30,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:30,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:17:30,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:30,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915584707] [2024-11-16 04:17:30,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915584707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:30,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:30,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:17:30,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460867413] [2024-11-16 04:17:30,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:30,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:30,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:30,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:30,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:30,768 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 1.8020304568527918) internal successors, (1065), 592 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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) [2024-11-16 04:17:33,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:33,298 INFO L93 Difference]: Finished difference Result 1650 states and 3035 transitions. [2024-11-16 04:17:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:33,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 27 [2024-11-16 04:17:33,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:33,317 INFO L225 Difference]: With dead ends: 1650 [2024-11-16 04:17:33,318 INFO L226 Difference]: Without dead ends: 980 [2024-11-16 04:17:33,323 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 [2024-11-16 04:17:33,326 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 463 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:33,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 507 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 04:17:33,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2024-11-16 04:17:33,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 974. [2024-11-16 04:17:33,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 1.551901336073998) internal successors, (1510), 973 states have internal predecessors, (1510), 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) [2024-11-16 04:17:33,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1510 transitions. [2024-11-16 04:17:33,428 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1510 transitions. Word has length 27 [2024-11-16 04:17:33,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:33,429 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 1510 transitions. [2024-11-16 04:17:33,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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) [2024-11-16 04:17:33,430 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1510 transitions. [2024-11-16 04:17:33,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 04:17:33,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:33,435 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:33,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:17:33,436 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:33,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:33,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1059126776, now seen corresponding path program 1 times [2024-11-16 04:17:33,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:33,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524447744] [2024-11-16 04:17:33,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:33,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:17:33,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:33,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524447744] [2024-11-16 04:17:33,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524447744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:33,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:33,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:17:33,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134748283] [2024-11-16 04:17:33,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:33,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:33,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:33,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:33,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:33,721 INFO L87 Difference]: Start difference. First operand 974 states and 1510 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2024-11-16 04:17:35,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:35,920 INFO L93 Difference]: Finished difference Result 2821 states and 4389 transitions. [2024-11-16 04:17:35,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:35,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 95 [2024-11-16 04:17:35,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:35,927 INFO L225 Difference]: With dead ends: 2821 [2024-11-16 04:17:35,927 INFO L226 Difference]: Without dead ends: 1849 [2024-11-16 04:17:35,931 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 [2024-11-16 04:17:35,932 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 405 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:35,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 584 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-16 04:17:35,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2024-11-16 04:17:35,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1846. [2024-11-16 04:17:35,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1845 states have (on average 1.3490514905149051) internal successors, (2489), 1845 states have internal predecessors, (2489), 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) [2024-11-16 04:17:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 2489 transitions. [2024-11-16 04:17:35,984 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 2489 transitions. Word has length 95 [2024-11-16 04:17:35,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:35,986 INFO L471 AbstractCegarLoop]: Abstraction has 1846 states and 2489 transitions. [2024-11-16 04:17:35,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2024-11-16 04:17:35,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 2489 transitions. [2024-11-16 04:17:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-16 04:17:35,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:35,992 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:35,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:17:35,993 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:35,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:35,994 INFO L85 PathProgramCache]: Analyzing trace with hash -758295306, now seen corresponding path program 1 times [2024-11-16 04:17:35,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:35,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901537039] [2024-11-16 04:17:35,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:35,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:17:36,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:36,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901537039] [2024-11-16 04:17:36,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901537039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:36,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:36,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:36,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884177688] [2024-11-16 04:17:36,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:36,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:17:36,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:36,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:17:36,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:17:36,353 INFO L87 Difference]: Start difference. First operand 1846 states and 2489 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:39,905 INFO L93 Difference]: Finished difference Result 6785 states and 9277 transitions. [2024-11-16 04:17:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:17:39,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-11-16 04:17:39,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:39,928 INFO L225 Difference]: With dead ends: 6785 [2024-11-16 04:17:39,928 INFO L226 Difference]: Without dead ends: 4941 [2024-11-16 04:17:39,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:17:39,933 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 944 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2516 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:39,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 293 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2516 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-16 04:17:39,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4941 states. [2024-11-16 04:17:40,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4941 to 4887. [2024-11-16 04:17:40,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4887 states, 4886 states have (on average 1.2859189521080638) internal successors, (6283), 4886 states have internal predecessors, (6283), 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) [2024-11-16 04:17:40,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 6283 transitions. [2024-11-16 04:17:40,030 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 6283 transitions. Word has length 98 [2024-11-16 04:17:40,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:40,034 INFO L471 AbstractCegarLoop]: Abstraction has 4887 states and 6283 transitions. [2024-11-16 04:17:40,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:40,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 6283 transitions. [2024-11-16 04:17:40,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-16 04:17:40,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:40,041 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:40,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 04:17:40,042 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:40,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:40,042 INFO L85 PathProgramCache]: Analyzing trace with hash -352500177, now seen corresponding path program 1 times [2024-11-16 04:17:40,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:40,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638193884] [2024-11-16 04:17:40,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:40,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-16 04:17:40,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:40,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638193884] [2024-11-16 04:17:40,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638193884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:40,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:40,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:17:40,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118292793] [2024-11-16 04:17:40,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:40,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:40,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:40,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:40,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:40,347 INFO L87 Difference]: Start difference. First operand 4887 states and 6283 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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) [2024-11-16 04:17:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:42,022 INFO L93 Difference]: Finished difference Result 14471 states and 18579 transitions. [2024-11-16 04:17:42,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:42,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 168 [2024-11-16 04:17:42,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:42,048 INFO L225 Difference]: With dead ends: 14471 [2024-11-16 04:17:42,049 INFO L226 Difference]: Without dead ends: 8297 [2024-11-16 04:17:42,055 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 [2024-11-16 04:17:42,057 INFO L432 NwaCegarLoop]: 517 mSDtfsCounter, 387 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:42,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 593 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 04:17:42,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8297 states. [2024-11-16 04:17:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8297 to 6592. [2024-11-16 04:17:42,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6592 states, 6591 states have (on average 1.1788802913063268) internal successors, (7770), 6591 states have internal predecessors, (7770), 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) [2024-11-16 04:17:42,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6592 states to 6592 states and 7770 transitions. [2024-11-16 04:17:42,174 INFO L78 Accepts]: Start accepts. Automaton has 6592 states and 7770 transitions. Word has length 168 [2024-11-16 04:17:42,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:42,174 INFO L471 AbstractCegarLoop]: Abstraction has 6592 states and 7770 transitions. [2024-11-16 04:17:42,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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) [2024-11-16 04:17:42,175 INFO L276 IsEmpty]: Start isEmpty. Operand 6592 states and 7770 transitions. [2024-11-16 04:17:42,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 04:17:42,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:42,177 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:42,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 04:17:42,177 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:42,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:42,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2088515509, now seen corresponding path program 1 times [2024-11-16 04:17:42,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:42,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645203263] [2024-11-16 04:17:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:42,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:42,440 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:17:42,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:42,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645203263] [2024-11-16 04:17:42,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645203263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:42,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:42,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:42,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134611972] [2024-11-16 04:17:42,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:42,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:42,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:42,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:42,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:42,445 INFO L87 Difference]: Start difference. First operand 6592 states and 7770 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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) [2024-11-16 04:17:44,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:44,100 INFO L93 Difference]: Finished difference Result 16600 states and 19971 transitions. [2024-11-16 04:17:44,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:44,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 181 [2024-11-16 04:17:44,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:44,128 INFO L225 Difference]: With dead ends: 16600 [2024-11-16 04:17:44,129 INFO L226 Difference]: Without dead ends: 10010 [2024-11-16 04:17:44,138 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 [2024-11-16 04:17:44,139 INFO L432 NwaCegarLoop]: 746 mSDtfsCounter, 496 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:44,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 806 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 04:17:44,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10010 states. [2024-11-16 04:17:44,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10010 to 10010. [2024-11-16 04:17:44,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10010 states, 10009 states have (on average 1.1692476770906184) internal successors, (11703), 10009 states have internal predecessors, (11703), 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) [2024-11-16 04:17:44,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10010 states to 10010 states and 11703 transitions. [2024-11-16 04:17:44,346 INFO L78 Accepts]: Start accepts. Automaton has 10010 states and 11703 transitions. Word has length 181 [2024-11-16 04:17:44,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:44,346 INFO L471 AbstractCegarLoop]: Abstraction has 10010 states and 11703 transitions. [2024-11-16 04:17:44,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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) [2024-11-16 04:17:44,347 INFO L276 IsEmpty]: Start isEmpty. Operand 10010 states and 11703 transitions. [2024-11-16 04:17:44,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-16 04:17:44,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:44,350 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:44,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 04:17:44,350 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:44,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:44,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1946932912, now seen corresponding path program 1 times [2024-11-16 04:17:44,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:44,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829235109] [2024-11-16 04:17:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:44,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:44,561 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-16 04:17:44,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:44,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829235109] [2024-11-16 04:17:44,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829235109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:44,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:44,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:44,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846754264] [2024-11-16 04:17:44,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:44,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:44,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:44,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:44,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:44,566 INFO L87 Difference]: Start difference. First operand 10010 states and 11703 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-16 04:17:46,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:46,262 INFO L93 Difference]: Finished difference Result 25127 states and 29647 transitions. [2024-11-16 04:17:46,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:46,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 183 [2024-11-16 04:17:46,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:46,301 INFO L225 Difference]: With dead ends: 25127 [2024-11-16 04:17:46,302 INFO L226 Difference]: Without dead ends: 15119 [2024-11-16 04:17:46,314 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 [2024-11-16 04:17:46,315 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 429 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:46,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 491 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 04:17:46,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15119 states. [2024-11-16 04:17:46,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15119 to 10409. [2024-11-16 04:17:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10409 states, 10408 states have (on average 1.1647770945426594) internal successors, (12123), 10408 states have internal predecessors, (12123), 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) [2024-11-16 04:17:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10409 states to 10409 states and 12123 transitions. [2024-11-16 04:17:46,566 INFO L78 Accepts]: Start accepts. Automaton has 10409 states and 12123 transitions. Word has length 183 [2024-11-16 04:17:46,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:46,568 INFO L471 AbstractCegarLoop]: Abstraction has 10409 states and 12123 transitions. [2024-11-16 04:17:46,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-16 04:17:46,568 INFO L276 IsEmpty]: Start isEmpty. Operand 10409 states and 12123 transitions. [2024-11-16 04:17:46,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-16 04:17:46,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:46,570 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:46,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 04:17:46,571 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:46,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:46,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1241453950, now seen corresponding path program 1 times [2024-11-16 04:17:46,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:46,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297575028] [2024-11-16 04:17:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:46,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:17:46,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:46,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297575028] [2024-11-16 04:17:46,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297575028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:46,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:46,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:46,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032360384] [2024-11-16 04:17:46,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:46,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:46,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:46,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:46,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:46,738 INFO L87 Difference]: Start difference. First operand 10409 states and 12123 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-11-16 04:17:48,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:48,567 INFO L93 Difference]: Finished difference Result 25936 states and 30479 transitions. [2024-11-16 04:17:48,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:48,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 196 [2024-11-16 04:17:48,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:48,595 INFO L225 Difference]: With dead ends: 25936 [2024-11-16 04:17:48,595 INFO L226 Difference]: Without dead ends: 15529 [2024-11-16 04:17:48,608 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 [2024-11-16 04:17:48,611 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 453 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:48,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 452 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 04:17:48,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15529 states. [2024-11-16 04:17:48,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15529 to 13811. [2024-11-16 04:17:48,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13811 states, 13810 states have (on average 1.1661115133960898) internal successors, (16104), 13810 states have internal predecessors, (16104), 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) [2024-11-16 04:17:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13811 states to 13811 states and 16104 transitions. [2024-11-16 04:17:48,924 INFO L78 Accepts]: Start accepts. Automaton has 13811 states and 16104 transitions. Word has length 196 [2024-11-16 04:17:48,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:48,925 INFO L471 AbstractCegarLoop]: Abstraction has 13811 states and 16104 transitions. [2024-11-16 04:17:48,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-11-16 04:17:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 13811 states and 16104 transitions. [2024-11-16 04:17:48,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-16 04:17:48,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:48,929 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:48,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 04:17:48,929 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:48,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:48,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1209639082, now seen corresponding path program 1 times [2024-11-16 04:17:48,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:48,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275565018] [2024-11-16 04:17:48,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:48,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:49,109 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:17:49,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:49,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275565018] [2024-11-16 04:17:49,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275565018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:49,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:49,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:49,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467681141] [2024-11-16 04:17:49,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:49,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:49,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:49,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:49,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:49,113 INFO L87 Difference]: Start difference. First operand 13811 states and 16104 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2024-11-16 04:17:51,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:51,163 INFO L93 Difference]: Finished difference Result 32311 states and 38009 transitions. [2024-11-16 04:17:51,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:51,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 228 [2024-11-16 04:17:51,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:51,198 INFO L225 Difference]: With dead ends: 32311 [2024-11-16 04:17:51,198 INFO L226 Difference]: Without dead ends: 18502 [2024-11-16 04:17:51,214 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 [2024-11-16 04:17:51,215 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 467 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:51,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 420 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-16 04:17:51,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18502 states. [2024-11-16 04:17:51,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18502 to 17217. [2024-11-16 04:17:51,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17217 states, 17216 states have (on average 1.1829112453531598) internal successors, (20365), 17216 states have internal predecessors, (20365), 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) [2024-11-16 04:17:51,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17217 states to 17217 states and 20365 transitions. [2024-11-16 04:17:51,522 INFO L78 Accepts]: Start accepts. Automaton has 17217 states and 20365 transitions. Word has length 228 [2024-11-16 04:17:51,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:51,523 INFO L471 AbstractCegarLoop]: Abstraction has 17217 states and 20365 transitions. [2024-11-16 04:17:51,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2024-11-16 04:17:51,523 INFO L276 IsEmpty]: Start isEmpty. Operand 17217 states and 20365 transitions. [2024-11-16 04:17:51,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-16 04:17:51,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:51,527 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:51,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 04:17:51,527 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:51,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:51,528 INFO L85 PathProgramCache]: Analyzing trace with hash 2029532350, now seen corresponding path program 1 times [2024-11-16 04:17:51,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:51,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596224970] [2024-11-16 04:17:51,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:51,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:17:51,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:51,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596224970] [2024-11-16 04:17:51,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596224970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:51,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:51,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:51,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123809947] [2024-11-16 04:17:51,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:51,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:51,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:51,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:51,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:51,844 INFO L87 Difference]: Start difference. First operand 17217 states and 20365 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2024-11-16 04:17:53,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:53,736 INFO L93 Difference]: Finished difference Result 39151 states and 46509 transitions. [2024-11-16 04:17:53,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:53,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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 245 [2024-11-16 04:17:53,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:53,776 INFO L225 Difference]: With dead ends: 39151 [2024-11-16 04:17:53,776 INFO L226 Difference]: Without dead ends: 21510 [2024-11-16 04:17:53,789 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 [2024-11-16 04:17:53,790 INFO L432 NwaCegarLoop]: 794 mSDtfsCounter, 357 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:53,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 870 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 04:17:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21510 states. [2024-11-16 04:17:54,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21510 to 21075. [2024-11-16 04:17:54,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21075 states, 21074 states have (on average 1.1663186865331687) internal successors, (24579), 21074 states have internal predecessors, (24579), 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) [2024-11-16 04:17:54,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21075 states to 21075 states and 24579 transitions. [2024-11-16 04:17:54,105 INFO L78 Accepts]: Start accepts. Automaton has 21075 states and 24579 transitions. Word has length 245 [2024-11-16 04:17:54,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:54,106 INFO L471 AbstractCegarLoop]: Abstraction has 21075 states and 24579 transitions. [2024-11-16 04:17:54,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2024-11-16 04:17:54,106 INFO L276 IsEmpty]: Start isEmpty. Operand 21075 states and 24579 transitions. [2024-11-16 04:17:54,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-16 04:17:54,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:54,110 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:54,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 04:17:54,111 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:54,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:54,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1386370042, now seen corresponding path program 1 times [2024-11-16 04:17:54,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:54,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046829727] [2024-11-16 04:17:54,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:54,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 188 proven. 71 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 04:17:54,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:54,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046829727] [2024-11-16 04:17:54,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046829727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:17:54,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98208756] [2024-11-16 04:17:54,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:54,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:17:54,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:17:54,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:17:54,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 04:17:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:54,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:17:54,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:17:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 188 proven. 71 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 04:17:54,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:17:55,259 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 04:17:55,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98208756] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 04:17:55,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 04:17:55,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-16 04:17:55,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68653719] [2024-11-16 04:17:55,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:55,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:17:55,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:55,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:17:55,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:17:55,262 INFO L87 Difference]: Start difference. First operand 21075 states and 24579 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 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) [2024-11-16 04:17:58,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:58,140 INFO L93 Difference]: Finished difference Result 59240 states and 69528 transitions. [2024-11-16 04:17:58,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:17:58,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 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 254 [2024-11-16 04:17:58,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:58,200 INFO L225 Difference]: With dead ends: 59240 [2024-11-16 04:17:58,200 INFO L226 Difference]: Without dead ends: 37301 [2024-11-16 04:17:58,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:17:58,224 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 879 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2289 mSolverCounterSat, 726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 3015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 2289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:58,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 162 Invalid, 3015 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [726 Valid, 2289 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 04:17:58,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37301 states. [2024-11-16 04:17:58,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37301 to 35590. [2024-11-16 04:17:58,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35590 states, 35589 states have (on average 1.1587288207030262) internal successors, (41238), 35589 states have internal predecessors, (41238), 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) [2024-11-16 04:17:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35590 states to 35590 states and 41238 transitions. [2024-11-16 04:17:58,657 INFO L78 Accepts]: Start accepts. Automaton has 35590 states and 41238 transitions. Word has length 254 [2024-11-16 04:17:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:58,657 INFO L471 AbstractCegarLoop]: Abstraction has 35590 states and 41238 transitions. [2024-11-16 04:17:58,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 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) [2024-11-16 04:17:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 35590 states and 41238 transitions. [2024-11-16 04:17:58,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-16 04:17:58,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:58,661 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:58,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 04:17:58,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 04:17:58,862 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:58,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:58,863 INFO L85 PathProgramCache]: Analyzing trace with hash -71976211, now seen corresponding path program 1 times [2024-11-16 04:17:58,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:58,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077146718] [2024-11-16 04:17:58,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:58,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 04:17:59,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:59,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077146718] [2024-11-16 04:17:59,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077146718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:59,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:59,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:59,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933667107] [2024-11-16 04:17:59,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:59,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:59,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:59,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:59,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:59,100 INFO L87 Difference]: Start difference. First operand 35590 states and 41238 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-11-16 04:18:00,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:00,671 INFO L93 Difference]: Finished difference Result 78840 states and 91515 transitions. [2024-11-16 04:18:00,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:18:00,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 262 [2024-11-16 04:18:00,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:18:00,736 INFO L225 Difference]: With dead ends: 78840 [2024-11-16 04:18:00,736 INFO L226 Difference]: Without dead ends: 42824 [2024-11-16 04:18:00,766 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 [2024-11-16 04:18:00,767 INFO L432 NwaCegarLoop]: 787 mSDtfsCounter, 380 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:18:00,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 855 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:18:00,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42824 states. [2024-11-16 04:18:01,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42824 to 42824. [2024-11-16 04:18:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42824 states, 42823 states have (on average 1.116806389089975) internal successors, (47825), 42823 states have internal predecessors, (47825), 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) [2024-11-16 04:18:01,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42824 states to 42824 states and 47825 transitions. [2024-11-16 04:18:01,416 INFO L78 Accepts]: Start accepts. Automaton has 42824 states and 47825 transitions. Word has length 262 [2024-11-16 04:18:01,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:18:01,417 INFO L471 AbstractCegarLoop]: Abstraction has 42824 states and 47825 transitions. [2024-11-16 04:18:01,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-11-16 04:18:01,417 INFO L276 IsEmpty]: Start isEmpty. Operand 42824 states and 47825 transitions. [2024-11-16 04:18:01,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-16 04:18:01,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:01,424 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:18:01,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 04:18:01,424 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:01,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:01,425 INFO L85 PathProgramCache]: Analyzing trace with hash -345364918, now seen corresponding path program 1 times [2024-11-16 04:18:01,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:01,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033782420] [2024-11-16 04:18:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:01,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 331 proven. 74 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-16 04:18:02,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:02,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033782420] [2024-11-16 04:18:02,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033782420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:18:02,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454649837] [2024-11-16 04:18:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:02,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:18:02,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:18:02,060 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:18:02,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 04:18:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:02,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:18:02,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:18:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 331 proven. 74 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-16 04:18:02,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:18:02,724 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-16 04:18:02,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454649837] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 04:18:02,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 04:18:02,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-16 04:18:02,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863503371] [2024-11-16 04:18:02,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:18:02,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:18:02,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:18:02,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:18:02,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:18:02,728 INFO L87 Difference]: Start difference. First operand 42824 states and 47825 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 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) [2024-11-16 04:18:05,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:05,404 INFO L93 Difference]: Finished difference Result 101883 states and 113904 transitions. [2024-11-16 04:18:05,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:18:05,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 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 329 [2024-11-16 04:18:05,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:18:05,486 INFO L225 Difference]: With dead ends: 101883 [2024-11-16 04:18:05,486 INFO L226 Difference]: Without dead ends: 58631 [2024-11-16 04:18:05,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:18:05,526 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 880 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 2871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:18:05,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 178 Invalid, 2871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-16 04:18:05,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58631 states. [2024-11-16 04:18:06,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58631 to 56072. [2024-11-16 04:18:06,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56072 states, 56071 states have (on average 1.1207754454174172) internal successors, (62843), 56071 states have internal predecessors, (62843), 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) [2024-11-16 04:18:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56072 states to 56072 states and 62843 transitions. [2024-11-16 04:18:06,368 INFO L78 Accepts]: Start accepts. Automaton has 56072 states and 62843 transitions. Word has length 329 [2024-11-16 04:18:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:18:06,368 INFO L471 AbstractCegarLoop]: Abstraction has 56072 states and 62843 transitions. [2024-11-16 04:18:06,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 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) [2024-11-16 04:18:06,369 INFO L276 IsEmpty]: Start isEmpty. Operand 56072 states and 62843 transitions. [2024-11-16 04:18:06,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2024-11-16 04:18:06,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:06,496 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:18:06,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 04:18:06,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 04:18:06,697 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:06,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:06,698 INFO L85 PathProgramCache]: Analyzing trace with hash 673171924, now seen corresponding path program 1 times [2024-11-16 04:18:06,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:06,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485099012] [2024-11-16 04:18:06,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:06,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-16 04:18:07,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:07,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485099012] [2024-11-16 04:18:07,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485099012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:18:07,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:18:07,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:18:07,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454249788] [2024-11-16 04:18:07,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:18:07,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:18:07,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:18:07,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:18:07,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:18:07,106 INFO L87 Difference]: Start difference. First operand 56072 states and 62843 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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) [2024-11-16 04:18:08,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:08,888 INFO L93 Difference]: Finished difference Result 121527 states and 136273 transitions. [2024-11-16 04:18:08,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:18:08,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 426 [2024-11-16 04:18:08,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:18:08,985 INFO L225 Difference]: With dead ends: 121527 [2024-11-16 04:18:08,986 INFO L226 Difference]: Without dead ends: 65031 [2024-11-16 04:18:09,173 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 [2024-11-16 04:18:09,178 INFO L432 NwaCegarLoop]: 720 mSDtfsCounter, 340 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:18:09,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 778 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:18:09,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65031 states. [2024-11-16 04:18:09,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65031 to 53476. [2024-11-16 04:18:09,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53476 states, 53475 states have (on average 1.1074333800841514) internal successors, (59220), 53475 states have internal predecessors, (59220), 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) [2024-11-16 04:18:10,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53476 states to 53476 states and 59220 transitions. [2024-11-16 04:18:10,034 INFO L78 Accepts]: Start accepts. Automaton has 53476 states and 59220 transitions. Word has length 426 [2024-11-16 04:18:10,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:18:10,035 INFO L471 AbstractCegarLoop]: Abstraction has 53476 states and 59220 transitions. [2024-11-16 04:18:10,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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) [2024-11-16 04:18:10,035 INFO L276 IsEmpty]: Start isEmpty. Operand 53476 states and 59220 transitions. [2024-11-16 04:18:10,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-16 04:18:10,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:10,045 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:18:10,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 04:18:10,045 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:10,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:10,046 INFO L85 PathProgramCache]: Analyzing trace with hash -260704469, now seen corresponding path program 1 times [2024-11-16 04:18:10,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:10,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081196124] [2024-11-16 04:18:10,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:10,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 04:18:10,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:10,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081196124] [2024-11-16 04:18:10,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081196124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:18:10,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:18:10,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:18:10,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140667327] [2024-11-16 04:18:10,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:18:10,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:18:10,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:18:10,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:18:10,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:18:10,592 INFO L87 Difference]: Start difference. First operand 53476 states and 59220 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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) [2024-11-16 04:18:12,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:12,562 INFO L93 Difference]: Finished difference Result 120184 states and 133117 transitions. [2024-11-16 04:18:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:18:12,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 427 [2024-11-16 04:18:12,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:18:12,642 INFO L225 Difference]: With dead ends: 120184 [2024-11-16 04:18:12,642 INFO L226 Difference]: Without dead ends: 64141 [2024-11-16 04:18:12,683 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 [2024-11-16 04:18:12,683 INFO L432 NwaCegarLoop]: 623 mSDtfsCounter, 438 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:18:12,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 663 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 04:18:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64141 states. [2024-11-16 04:18:13,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64141 to 61997. [2024-11-16 04:18:13,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61997 states, 61996 states have (on average 1.0958932834376411) internal successors, (67941), 61996 states have internal predecessors, (67941), 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) [2024-11-16 04:18:13,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61997 states to 61997 states and 67941 transitions. [2024-11-16 04:18:13,469 INFO L78 Accepts]: Start accepts. Automaton has 61997 states and 67941 transitions. Word has length 427 [2024-11-16 04:18:13,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:18:13,469 INFO L471 AbstractCegarLoop]: Abstraction has 61997 states and 67941 transitions. [2024-11-16 04:18:13,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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) [2024-11-16 04:18:13,469 INFO L276 IsEmpty]: Start isEmpty. Operand 61997 states and 67941 transitions. [2024-11-16 04:18:13,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-11-16 04:18:13,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:13,478 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:18:13,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 04:18:13,479 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:13,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:13,480 INFO L85 PathProgramCache]: Analyzing trace with hash -414205172, now seen corresponding path program 1 times [2024-11-16 04:18:13,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:13,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944866060] [2024-11-16 04:18:13,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:13,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 582 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 04:18:14,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:14,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944866060] [2024-11-16 04:18:14,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944866060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:18:14,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:18:14,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:18:14,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696037980] [2024-11-16 04:18:14,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:18:14,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:18:14,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:18:14,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:18:14,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:18:14,156 INFO L87 Difference]: Start difference. First operand 61997 states and 67941 transitions. Second operand has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2024-11-16 04:18:17,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:17,082 INFO L93 Difference]: Finished difference Result 145815 states and 159915 transitions. [2024-11-16 04:18:17,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:18:17,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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 431 [2024-11-16 04:18:17,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:18:17,160 INFO L225 Difference]: With dead ends: 145815 [2024-11-16 04:18:17,161 INFO L226 Difference]: Without dead ends: 83820 [2024-11-16 04:18:17,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:18:17,174 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 818 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 2769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:18:17,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 227 Invalid, 2769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 04:18:17,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83820 states. [2024-11-16 04:18:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83820 to 79111. [2024-11-16 04:18:17,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79111 states, 79110 states have (on average 1.0977373277714575) internal successors, (86842), 79110 states have internal predecessors, (86842), 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) [2024-11-16 04:18:18,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79111 states to 79111 states and 86842 transitions. [2024-11-16 04:18:18,007 INFO L78 Accepts]: Start accepts. Automaton has 79111 states and 86842 transitions. Word has length 431 [2024-11-16 04:18:18,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:18:18,008 INFO L471 AbstractCegarLoop]: Abstraction has 79111 states and 86842 transitions. [2024-11-16 04:18:18,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2024-11-16 04:18:18,008 INFO L276 IsEmpty]: Start isEmpty. Operand 79111 states and 86842 transitions. [2024-11-16 04:18:18,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2024-11-16 04:18:18,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:18,015 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:18:18,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 04:18:18,015 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:18,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:18,017 INFO L85 PathProgramCache]: Analyzing trace with hash 43160024, now seen corresponding path program 1 times [2024-11-16 04:18:18,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:18,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340056061] [2024-11-16 04:18:18,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:18,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 541 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-16 04:18:18,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:18,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340056061] [2024-11-16 04:18:18,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340056061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:18:18,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:18:18,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:18:18,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165943074] [2024-11-16 04:18:18,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:18:18,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:18:18,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:18:18,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:18:18,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:18:18,590 INFO L87 Difference]: Start difference. First operand 79111 states and 86842 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2024-11-16 04:18:20,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:20,449 INFO L93 Difference]: Finished difference Result 168039 states and 184624 transitions. [2024-11-16 04:18:20,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:18:20,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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 450 [2024-11-16 04:18:20,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:18:20,558 INFO L225 Difference]: With dead ends: 168039 [2024-11-16 04:18:20,558 INFO L226 Difference]: Without dead ends: 88930 [2024-11-16 04:18:20,610 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 [2024-11-16 04:18:20,610 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 388 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:18:20,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 333 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:18:20,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88930 states. [2024-11-16 04:18:21,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88930 to 88494. [2024-11-16 04:18:21,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88494 states, 88493 states have (on average 1.0951148678426543) internal successors, (96910), 88493 states have internal predecessors, (96910), 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) [2024-11-16 04:18:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88494 states to 88494 states and 96910 transitions. [2024-11-16 04:18:22,116 INFO L78 Accepts]: Start accepts. Automaton has 88494 states and 96910 transitions. Word has length 450 [2024-11-16 04:18:22,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:18:22,116 INFO L471 AbstractCegarLoop]: Abstraction has 88494 states and 96910 transitions. [2024-11-16 04:18:22,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2024-11-16 04:18:22,117 INFO L276 IsEmpty]: Start isEmpty. Operand 88494 states and 96910 transitions. [2024-11-16 04:18:22,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-16 04:18:22,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:22,137 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:18:22,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 04:18:22,137 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:22,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:22,137 INFO L85 PathProgramCache]: Analyzing trace with hash 239267759, now seen corresponding path program 1 times [2024-11-16 04:18:22,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:22,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128238811] [2024-11-16 04:18:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:22,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2024-11-16 04:18:22,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:22,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128238811] [2024-11-16 04:18:22,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128238811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:18:22,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:18:22,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:18:22,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223715453] [2024-11-16 04:18:22,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:18:22,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:18:22,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:18:22,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:18:22,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:18:22,403 INFO L87 Difference]: Start difference. First operand 88494 states and 96910 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2024-11-16 04:18:24,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:24,352 INFO L93 Difference]: Finished difference Result 190638 states and 209025 transitions. [2024-11-16 04:18:24,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:18:24,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 474 [2024-11-16 04:18:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:18:24,491 INFO L225 Difference]: With dead ends: 190638 [2024-11-16 04:18:24,492 INFO L226 Difference]: Without dead ends: 102146 [2024-11-16 04:18:24,539 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 [2024-11-16 04:18:24,539 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 477 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:18:24,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 267 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 04:18:24,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102146 states. [2024-11-16 04:18:25,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102146 to 101688. [2024-11-16 04:18:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101688 states, 101687 states have (on average 1.0925782056703413) internal successors, (111101), 101687 states have internal predecessors, (111101), 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) [2024-11-16 04:18:26,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101688 states to 101688 states and 111101 transitions. [2024-11-16 04:18:26,501 INFO L78 Accepts]: Start accepts. Automaton has 101688 states and 111101 transitions. Word has length 474 [2024-11-16 04:18:26,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:18:26,502 INFO L471 AbstractCegarLoop]: Abstraction has 101688 states and 111101 transitions. [2024-11-16 04:18:26,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2024-11-16 04:18:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 101688 states and 111101 transitions. [2024-11-16 04:18:26,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-16 04:18:26,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:26,510 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:18:26,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 04:18:26,510 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:26,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:26,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2071804657, now seen corresponding path program 1 times [2024-11-16 04:18:26,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:26,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982223138] [2024-11-16 04:18:26,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:26,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:26,996 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 20 proven. 51 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-16 04:18:26,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:26,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982223138] [2024-11-16 04:18:26,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982223138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:18:26,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374579246] [2024-11-16 04:18:26,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:26,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:18:26,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:18:26,999 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:18:27,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 04:18:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:27,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:18:27,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:18:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-16 04:18:27,410 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:18:27,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374579246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:18:27,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:18:27,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 04:18:27,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007287570] [2024-11-16 04:18:27,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:18:27,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:18:27,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:18:27,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:18:27,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:18:27,413 INFO L87 Difference]: Start difference. First operand 101688 states and 111101 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2024-11-16 04:18:29,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:29,062 INFO L93 Difference]: Finished difference Result 200382 states and 218843 transitions. [2024-11-16 04:18:29,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:18:29,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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 476 [2024-11-16 04:18:29,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:18:29,165 INFO L225 Difference]: With dead ends: 200382 [2024-11-16 04:18:29,165 INFO L226 Difference]: Without dead ends: 98264 [2024-11-16 04:18:29,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:18:29,223 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 451 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:18:29,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 335 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 04:18:29,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98264 states. [2024-11-16 04:18:30,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98264 to 97409. [2024-11-16 04:18:30,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97409 states, 97408 states have (on average 1.0862762812089357) internal successors, (105812), 97408 states have internal predecessors, (105812), 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) [2024-11-16 04:18:30,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97409 states to 97409 states and 105812 transitions. [2024-11-16 04:18:30,754 INFO L78 Accepts]: Start accepts. Automaton has 97409 states and 105812 transitions. Word has length 476 [2024-11-16 04:18:30,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:18:30,755 INFO L471 AbstractCegarLoop]: Abstraction has 97409 states and 105812 transitions. [2024-11-16 04:18:30,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2024-11-16 04:18:30,756 INFO L276 IsEmpty]: Start isEmpty. Operand 97409 states and 105812 transitions. [2024-11-16 04:18:30,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-16 04:18:30,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:30,767 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:18:30,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 04:18:30,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 04:18:30,968 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:30,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:30,969 INFO L85 PathProgramCache]: Analyzing trace with hash 43804373, now seen corresponding path program 1 times [2024-11-16 04:18:30,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:30,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157038453] [2024-11-16 04:18:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:30,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 568 proven. 29 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-16 04:18:32,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:32,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157038453] [2024-11-16 04:18:32,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157038453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:18:32,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424714910] [2024-11-16 04:18:32,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:32,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:18:32,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:18:32,356 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:18:32,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 04:18:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:32,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 04:18:32,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:18:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 568 proven. 29 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-16 04:18:34,505 INFO L311 TraceCheckSpWp]: Computing backward predicates...