./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.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 e0c7c69d3788b9174ce50b7ab42b39214a13bc3eceec60ee173c8e1ad7db186a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 04:54:48,154 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 04:54:48,245 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 04:54:48,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 04:54:48,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 04:54:48,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 04:54:48,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 04:54:48,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 04:54:48,279 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 04:54:48,280 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 04:54:48,281 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 04:54:48,281 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 04:54:48,281 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 04:54:48,282 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 04:54:48,283 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 04:54:48,283 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 04:54:48,286 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 04:54:48,286 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 04:54:48,286 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 04:54:48,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 04:54:48,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 04:54:48,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 04:54:48,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 04:54:48,288 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 04:54:48,288 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 04:54:48,288 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 04:54:48,288 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 04:54:48,289 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 04:54:48,289 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 04:54:48,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 04:54:48,289 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 04:54:48,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 04:54:48,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 04:54:48,290 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 04:54:48,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 04:54:48,290 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 04:54:48,291 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 04:54:48,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 04:54:48,291 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 04:54:48,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 04:54:48,293 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 04:54:48,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 04:54:48,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0c7c69d3788b9174ce50b7ab42b39214a13bc3eceec60ee173c8e1ad7db186a [2024-10-14 04:54:48,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 04:54:48,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 04:54:48,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 04:54:48,557 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 04:54:48,560 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 04:54:48,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-10-14 04:54:50,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 04:54:50,439 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 04:54:50,440 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-10-14 04:54:50,475 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94059d37f/3b5b38f78b5f4508b5c8fd2a22f82877/FLAG23f0bc6f0 [2024-10-14 04:54:50,490 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94059d37f/3b5b38f78b5f4508b5c8fd2a22f82877 [2024-10-14 04:54:50,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 04:54:50,495 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 04:54:50,498 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 04:54:50,499 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 04:54:50,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 04:54:50,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:54:50" (1/1) ... [2024-10-14 04:54:50,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8f9caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:50, skipping insertion in model container [2024-10-14 04:54:50,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:54:50" (1/1) ... [2024-10-14 04:54:50,609 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 04:54:50,928 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c[8712,8725] [2024-10-14 04:54:50,976 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c[14267,14280] [2024-10-14 04:54:51,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 04:54:51,696 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 04:54:51,725 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c[8712,8725] [2024-10-14 04:54:51,738 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c[14267,14280] [2024-10-14 04:54:52,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 04:54:52,228 INFO L204 MainTranslator]: Completed translation [2024-10-14 04:54:52,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:52 WrapperNode [2024-10-14 04:54:52,229 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 04:54:52,230 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 04:54:52,230 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 04:54:52,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 04:54:52,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:52" (1/1) ... [2024-10-14 04:54:52,290 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:52" (1/1) ... [2024-10-14 04:54:52,607 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5039 [2024-10-14 04:54:52,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 04:54:52,608 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 04:54:52,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 04:54:52,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 04:54:52,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:52" (1/1) ... [2024-10-14 04:54:52,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:52" (1/1) ... [2024-10-14 04:54:52,668 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:52" (1/1) ... [2024-10-14 04:54:52,858 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 04:54:52,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:52" (1/1) ... [2024-10-14 04:54:52,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:52" (1/1) ... [2024-10-14 04:54:52,967 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:52" (1/1) ... [2024-10-14 04:54:52,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:52" (1/1) ... [2024-10-14 04:54:53,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:52" (1/1) ... [2024-10-14 04:54:53,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:52" (1/1) ... [2024-10-14 04:54:53,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 04:54:53,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 04:54:53,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 04:54:53,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 04:54:53,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:52" (1/1) ... [2024-10-14 04:54:53,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 04:54:53,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:54:53,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 04:54:53,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 04:54:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 04:54:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 04:54:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 04:54:53,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 04:54:53,371 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 04:54:53,374 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 04:54:57,688 INFO L? ?]: Removed 739 outVars from TransFormulas that were not future-live. [2024-10-14 04:54:57,689 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 04:54:57,771 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 04:54:57,772 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 04:54:57,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:54:57 BoogieIcfgContainer [2024-10-14 04:54:57,773 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 04:54:57,775 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 04:54:57,775 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 04:54:57,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 04:54:57,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:54:50" (1/3) ... [2024-10-14 04:54:57,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a2d675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:54:57, skipping insertion in model container [2024-10-14 04:54:57,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:54:52" (2/3) ... [2024-10-14 04:54:57,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a2d675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:54:57, skipping insertion in model container [2024-10-14 04:54:57,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:54:57" (3/3) ... [2024-10-14 04:54:57,781 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-10-14 04:54:57,805 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 04:54:57,805 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 04:54:57,903 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 04:54:57,909 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;@307e7140, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 04:54:57,910 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-14 04:54:57,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:54:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-14 04:54:57,927 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:54:57,928 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:54:57,928 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:54:57,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:54:57,934 INFO L85 PathProgramCache]: Analyzing trace with hash 30108119, now seen corresponding path program 1 times [2024-10-14 04:54:57,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:54:57,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559630516] [2024-10-14 04:54:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:54:57,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:54:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:54:58,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:54:58,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:54:58,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559630516] [2024-10-14 04:54:58,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559630516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:54:58,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:54:58,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 04:54:58,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584250912] [2024-10-14 04:54:58,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:54:58,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 04:54:58,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:54:58,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 04:54:58,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 04:54:58,221 INFO L87 Difference]: Start difference. First operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:54:58,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:54:58,341 INFO L93 Difference]: Finished difference Result 1616 states and 3185 transitions. [2024-10-14 04:54:58,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 04:54:58,343 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2024-10-14 04:54:58,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:54:58,363 INFO L225 Difference]: With dead ends: 1616 [2024-10-14 04:54:58,363 INFO L226 Difference]: Without dead ends: 818 [2024-10-14 04:54:58,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 04:54:58,376 INFO L432 NwaCegarLoop]: 1547 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:54:58,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1547 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:54:58,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2024-10-14 04:54:58,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2024-10-14 04:54:58,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8970588235294117) internal successors, (1548), 817 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:54:58,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1548 transitions. [2024-10-14 04:54:58,477 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1548 transitions. Word has length 19 [2024-10-14 04:54:58,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:54:58,477 INFO L471 AbstractCegarLoop]: Abstraction has 818 states and 1548 transitions. [2024-10-14 04:54:58,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:54:58,478 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1548 transitions. [2024-10-14 04:54:58,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-14 04:54:58,480 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:54:58,481 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:54:58,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 04:54:58,482 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:54:58,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:54:58,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1249755559, now seen corresponding path program 1 times [2024-10-14 04:54:58,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:54:58,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469612995] [2024-10-14 04:54:58,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:54:58,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:54:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:54:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:54:58,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:54:58,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469612995] [2024-10-14 04:54:58,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469612995] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:54:58,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:54:58,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 04:54:58,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134366866] [2024-10-14 04:54:58,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:54:58,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 04:54:58,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:54:58,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 04:54:58,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 04:54:58,672 INFO L87 Difference]: Start difference. First operand 818 states and 1548 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:54:58,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:54:58,764 INFO L93 Difference]: Finished difference Result 858 states and 1610 transitions. [2024-10-14 04:54:58,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 04:54:58,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2024-10-14 04:54:58,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:54:58,770 INFO L225 Difference]: With dead ends: 858 [2024-10-14 04:54:58,770 INFO L226 Difference]: Without dead ends: 818 [2024-10-14 04:54:58,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 04:54:58,772 INFO L432 NwaCegarLoop]: 1545 mSDtfsCounter, 0 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:54:58,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4608 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:54:58,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2024-10-14 04:54:58,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2024-10-14 04:54:58,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8688725490196079) internal successors, (1525), 817 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:54:58,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1525 transitions. [2024-10-14 04:54:58,795 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1525 transitions. Word has length 19 [2024-10-14 04:54:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:54:58,796 INFO L471 AbstractCegarLoop]: Abstraction has 818 states and 1525 transitions. [2024-10-14 04:54:58,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:54:58,797 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1525 transitions. [2024-10-14 04:54:58,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-14 04:54:58,800 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:54:58,800 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:54:58,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 04:54:58,801 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:54:58,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:54:58,805 INFO L85 PathProgramCache]: Analyzing trace with hash -20862892, now seen corresponding path program 1 times [2024-10-14 04:54:58,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:54:58,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145501038] [2024-10-14 04:54:58,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:54:58,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:54:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:54:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:54:59,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:54:59,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145501038] [2024-10-14 04:54:59,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145501038] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:54:59,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:54:59,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 04:54:59,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20284212] [2024-10-14 04:54:59,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:54:59,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 04:54:59,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:54:59,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 04:54:59,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 04:54:59,022 INFO L87 Difference]: Start difference. First operand 818 states and 1525 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:54:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:54:59,251 INFO L93 Difference]: Finished difference Result 1114 states and 1997 transitions. [2024-10-14 04:54:59,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 04:54:59,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-10-14 04:54:59,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:54:59,257 INFO L225 Difference]: With dead ends: 1114 [2024-10-14 04:54:59,257 INFO L226 Difference]: Without dead ends: 1077 [2024-10-14 04:54:59,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-14 04:54:59,260 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 6269 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6269 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 04:54:59,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6269 Valid, 2107 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 04:54:59,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2024-10-14 04:54:59,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 853. [2024-10-14 04:54:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 851 states have (on average 1.8578143360752057) internal successors, (1581), 852 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:54:59,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1581 transitions. [2024-10-14 04:54:59,283 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1581 transitions. Word has length 41 [2024-10-14 04:54:59,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:54:59,283 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1581 transitions. [2024-10-14 04:54:59,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:54:59,284 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1581 transitions. [2024-10-14 04:54:59,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-14 04:54:59,285 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:54:59,285 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:54:59,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 04:54:59,286 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:54:59,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:54:59,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1301986756, now seen corresponding path program 1 times [2024-10-14 04:54:59,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:54:59,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988594768] [2024-10-14 04:54:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:54:59,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:54:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:54:59,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:54:59,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:54:59,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988594768] [2024-10-14 04:54:59,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988594768] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:54:59,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:54:59,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 04:54:59,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056304249] [2024-10-14 04:54:59,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:54:59,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:54:59,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:54:59,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:54:59,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:54:59,378 INFO L87 Difference]: Start difference. First operand 853 states and 1581 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:54:59,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:54:59,426 INFO L93 Difference]: Finished difference Result 986 states and 1792 transitions. [2024-10-14 04:54:59,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:54:59,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-14 04:54:59,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:54:59,431 INFO L225 Difference]: With dead ends: 986 [2024-10-14 04:54:59,431 INFO L226 Difference]: Without dead ends: 914 [2024-10-14 04:54:59,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:54:59,433 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 1474 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:54:59,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1569 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:54:59,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2024-10-14 04:54:59,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 910. [2024-10-14 04:54:59,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8381057268722467) internal successors, (1669), 909 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:54:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1669 transitions. [2024-10-14 04:54:59,462 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1669 transitions. Word has length 43 [2024-10-14 04:54:59,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:54:59,463 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1669 transitions. [2024-10-14 04:54:59,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:54:59,463 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1669 transitions. [2024-10-14 04:54:59,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-14 04:54:59,466 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:54:59,467 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:54:59,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 04:54:59,467 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:54:59,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:54:59,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1304131708, now seen corresponding path program 1 times [2024-10-14 04:54:59,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:54:59,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9411723] [2024-10-14 04:54:59,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:54:59,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:54:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:54:59,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:54:59,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:54:59,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9411723] [2024-10-14 04:54:59,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9411723] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:54:59,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:54:59,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 04:54:59,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308443591] [2024-10-14 04:54:59,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:54:59,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 04:54:59,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:54:59,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 04:54:59,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 04:54:59,709 INFO L87 Difference]: Start difference. First operand 910 states and 1669 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:54:59,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:54:59,851 INFO L93 Difference]: Finished difference Result 1041 states and 1873 transitions. [2024-10-14 04:54:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 04:54:59,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-14 04:54:59,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:54:59,856 INFO L225 Difference]: With dead ends: 1041 [2024-10-14 04:54:59,856 INFO L226 Difference]: Without dead ends: 912 [2024-10-14 04:54:59,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-14 04:54:59,859 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 2970 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2970 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:54:59,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2970 Valid, 1678 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:54:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-10-14 04:54:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 910. [2024-10-14 04:54:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8359030837004404) internal successors, (1667), 909 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:54:59,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1667 transitions. [2024-10-14 04:54:59,879 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1667 transitions. Word has length 43 [2024-10-14 04:54:59,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:54:59,881 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1667 transitions. [2024-10-14 04:54:59,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:54:59,882 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1667 transitions. [2024-10-14 04:54:59,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-14 04:54:59,883 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:54:59,883 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:54:59,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 04:54:59,884 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:54:59,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:54:59,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1644993698, now seen corresponding path program 1 times [2024-10-14 04:54:59,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:54:59,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083445016] [2024-10-14 04:54:59,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:54:59,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:54:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:00,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:00,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083445016] [2024-10-14 04:55:00,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083445016] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:55:00,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:55:00,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 04:55:00,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511719277] [2024-10-14 04:55:00,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:55:00,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 04:55:00,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:00,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 04:55:00,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 04:55:00,104 INFO L87 Difference]: Start difference. First operand 910 states and 1667 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:00,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:55:00,144 INFO L93 Difference]: Finished difference Result 916 states and 1674 transitions. [2024-10-14 04:55:00,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 04:55:00,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2024-10-14 04:55:00,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:55:00,149 INFO L225 Difference]: With dead ends: 916 [2024-10-14 04:55:00,149 INFO L226 Difference]: Without dead ends: 914 [2024-10-14 04:55:00,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 04:55:00,150 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4555 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:55:00,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4555 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:55:00,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2024-10-14 04:55:00,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 914. [2024-10-14 04:55:00,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.831140350877193) internal successors, (1670), 913 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:00,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1670 transitions. [2024-10-14 04:55:00,169 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1670 transitions. Word has length 44 [2024-10-14 04:55:00,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:55:00,169 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1670 transitions. [2024-10-14 04:55:00,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:00,170 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1670 transitions. [2024-10-14 04:55:00,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-14 04:55:00,170 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:55:00,171 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:55:00,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 04:55:00,171 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:55:00,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:55:00,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1846232228, now seen corresponding path program 1 times [2024-10-14 04:55:00,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:55:00,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234762873] [2024-10-14 04:55:00,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:00,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:55:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:00,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:00,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234762873] [2024-10-14 04:55:00,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234762873] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:55:00,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:55:00,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 04:55:00,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406724293] [2024-10-14 04:55:00,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:55:00,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:55:00,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:00,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:55:00,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:55:00,231 INFO L87 Difference]: Start difference. First operand 914 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:00,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:55:00,264 INFO L93 Difference]: Finished difference Result 1164 states and 2050 transitions. [2024-10-14 04:55:00,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:55:00,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-14 04:55:00,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:55:00,269 INFO L225 Difference]: With dead ends: 1164 [2024-10-14 04:55:00,269 INFO L226 Difference]: Without dead ends: 1031 [2024-10-14 04:55:00,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:55:00,271 INFO L432 NwaCegarLoop]: 1557 mSDtfsCounter, 1485 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:55:00,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1620 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:55:00,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2024-10-14 04:55:00,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1029. [2024-10-14 04:55:00,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1027 states have (on average 1.7925998052580332) internal successors, (1841), 1028 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1841 transitions. [2024-10-14 04:55:00,292 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1841 transitions. Word has length 45 [2024-10-14 04:55:00,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:55:00,292 INFO L471 AbstractCegarLoop]: Abstraction has 1029 states and 1841 transitions. [2024-10-14 04:55:00,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:00,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1841 transitions. [2024-10-14 04:55:00,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-14 04:55:00,293 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:55:00,293 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:55:00,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 04:55:00,294 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:55:00,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:55:00,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1823079004, now seen corresponding path program 1 times [2024-10-14 04:55:00,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:55:00,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72157596] [2024-10-14 04:55:00,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:00,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:55:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:00,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:00,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72157596] [2024-10-14 04:55:00,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72157596] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:55:00,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:55:00,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 04:55:00,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453710829] [2024-10-14 04:55:00,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:55:00,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:55:00,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:00,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:55:00,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:55:00,341 INFO L87 Difference]: Start difference. First operand 1029 states and 1841 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:00,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:55:00,377 INFO L93 Difference]: Finished difference Result 1493 states and 2535 transitions. [2024-10-14 04:55:00,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:55:00,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-14 04:55:00,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:55:00,382 INFO L225 Difference]: With dead ends: 1493 [2024-10-14 04:55:00,383 INFO L226 Difference]: Without dead ends: 1245 [2024-10-14 04:55:00,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:55:00,384 INFO L432 NwaCegarLoop]: 1555 mSDtfsCounter, 1483 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:55:00,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1622 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:55:00,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2024-10-14 04:55:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1243. [2024-10-14 04:55:00,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1241 states have (on average 1.7332796132151491) internal successors, (2151), 1242 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 2151 transitions. [2024-10-14 04:55:00,409 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 2151 transitions. Word has length 45 [2024-10-14 04:55:00,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:55:00,410 INFO L471 AbstractCegarLoop]: Abstraction has 1243 states and 2151 transitions. [2024-10-14 04:55:00,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:00,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 2151 transitions. [2024-10-14 04:55:00,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-14 04:55:00,410 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:55:00,410 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:55:00,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 04:55:00,411 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:55:00,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:55:00,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1583154852, now seen corresponding path program 1 times [2024-10-14 04:55:00,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:55:00,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805894231] [2024-10-14 04:55:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:00,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:55:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:00,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:00,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805894231] [2024-10-14 04:55:00,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805894231] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:55:00,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:55:00,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 04:55:00,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644913558] [2024-10-14 04:55:00,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:55:00,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:55:00,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:00,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:55:00,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:55:00,475 INFO L87 Difference]: Start difference. First operand 1243 states and 2151 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:00,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:55:00,515 INFO L93 Difference]: Finished difference Result 2103 states and 3409 transitions. [2024-10-14 04:55:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:55:00,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-14 04:55:00,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:55:00,522 INFO L225 Difference]: With dead ends: 2103 [2024-10-14 04:55:00,523 INFO L226 Difference]: Without dead ends: 1641 [2024-10-14 04:55:00,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:55:00,526 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 1481 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:55:00,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1624 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:55:00,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2024-10-14 04:55:00,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1639. [2024-10-14 04:55:00,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1637 states have (on average 1.653634697617593) internal successors, (2707), 1638 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:00,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2707 transitions. [2024-10-14 04:55:00,570 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2707 transitions. Word has length 45 [2024-10-14 04:55:00,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:55:00,571 INFO L471 AbstractCegarLoop]: Abstraction has 1639 states and 2707 transitions. [2024-10-14 04:55:00,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:00,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2707 transitions. [2024-10-14 04:55:00,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-14 04:55:00,572 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:55:00,572 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:55:00,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 04:55:00,572 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:55:00,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:55:00,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1083059392, now seen corresponding path program 1 times [2024-10-14 04:55:00,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:55:00,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409204536] [2024-10-14 04:55:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:00,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:55:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:00,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:00,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409204536] [2024-10-14 04:55:00,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409204536] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:55:00,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:55:00,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 04:55:00,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578210006] [2024-10-14 04:55:00,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:55:00,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 04:55:00,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:00,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 04:55:00,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 04:55:00,693 INFO L87 Difference]: Start difference. First operand 1639 states and 2707 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:05,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:55:05,969 INFO L93 Difference]: Finished difference Result 3894 states and 7016 transitions. [2024-10-14 04:55:05,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 04:55:05,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-10-14 04:55:05,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:55:05,981 INFO L225 Difference]: With dead ends: 3894 [2024-10-14 04:55:05,981 INFO L226 Difference]: Without dead ends: 3141 [2024-10-14 04:55:05,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 04:55:05,984 INFO L432 NwaCegarLoop]: 758 mSDtfsCounter, 2390 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-10-14 04:55:05,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2390 Valid, 776 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-10-14 04:55:05,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2024-10-14 04:55:06,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 3141. [2024-10-14 04:55:06,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3139 states have (on average 1.5358394393118828) internal successors, (4821), 3140 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:06,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 4821 transitions. [2024-10-14 04:55:06,057 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 4821 transitions. Word has length 47 [2024-10-14 04:55:06,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:55:06,058 INFO L471 AbstractCegarLoop]: Abstraction has 3141 states and 4821 transitions. [2024-10-14 04:55:06,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:06,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 4821 transitions. [2024-10-14 04:55:06,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-14 04:55:06,059 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:55:06,059 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:55:06,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 04:55:06,059 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:55:06,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:55:06,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1425223489, now seen corresponding path program 1 times [2024-10-14 04:55:06,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:55:06,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238585276] [2024-10-14 04:55:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:06,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:55:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:06,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:06,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238585276] [2024-10-14 04:55:06,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238585276] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:55:06,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:55:06,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 04:55:06,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721733630] [2024-10-14 04:55:06,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:55:06,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:55:06,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:06,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:55:06,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:55:06,102 INFO L87 Difference]: Start difference. First operand 3141 states and 4821 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:55:06,162 INFO L93 Difference]: Finished difference Result 4044 states and 6155 transitions. [2024-10-14 04:55:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:55:06,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-10-14 04:55:06,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:55:06,178 INFO L225 Difference]: With dead ends: 4044 [2024-10-14 04:55:06,178 INFO L226 Difference]: Without dead ends: 3545 [2024-10-14 04:55:06,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:55:06,181 INFO L432 NwaCegarLoop]: 1562 mSDtfsCounter, 1484 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:55:06,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:55:06,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3545 states. [2024-10-14 04:55:06,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3545 to 3543. [2024-10-14 04:55:06,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 3541 states have (on average 1.522451284947755) internal successors, (5391), 3542 states have internal predecessors, (5391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:06,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 5391 transitions. [2024-10-14 04:55:06,316 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 5391 transitions. Word has length 47 [2024-10-14 04:55:06,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:55:06,316 INFO L471 AbstractCegarLoop]: Abstraction has 3543 states and 5391 transitions. [2024-10-14 04:55:06,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:06,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 5391 transitions. [2024-10-14 04:55:06,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 04:55:06,317 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:55:06,318 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:55:06,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 04:55:06,318 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:55:06,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:55:06,319 INFO L85 PathProgramCache]: Analyzing trace with hash 70244653, now seen corresponding path program 1 times [2024-10-14 04:55:06,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:55:06,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871780836] [2024-10-14 04:55:06,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:06,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:55:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 04:55:06,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:06,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871780836] [2024-10-14 04:55:06,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871780836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:55:06,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:55:06,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 04:55:06,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531073213] [2024-10-14 04:55:06,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:55:06,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 04:55:06,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:06,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 04:55:06,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 04:55:06,449 INFO L87 Difference]: Start difference. First operand 3543 states and 5391 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:06,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:55:06,672 INFO L93 Difference]: Finished difference Result 8849 states and 13004 transitions. [2024-10-14 04:55:06,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 04:55:06,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-14 04:55:06,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:55:06,709 INFO L225 Difference]: With dead ends: 8849 [2024-10-14 04:55:06,709 INFO L226 Difference]: Without dead ends: 7591 [2024-10-14 04:55:06,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-14 04:55:06,715 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 4653 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4653 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 04:55:06,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4653 Valid, 3347 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 04:55:06,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7591 states. [2024-10-14 04:55:06,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7591 to 4799. [2024-10-14 04:55:06,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4799 states, 4797 states have (on average 1.4957264957264957) internal successors, (7175), 4798 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:06,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4799 states to 4799 states and 7175 transitions. [2024-10-14 04:55:06,884 INFO L78 Accepts]: Start accepts. Automaton has 4799 states and 7175 transitions. Word has length 61 [2024-10-14 04:55:06,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:55:06,884 INFO L471 AbstractCegarLoop]: Abstraction has 4799 states and 7175 transitions. [2024-10-14 04:55:06,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:06,885 INFO L276 IsEmpty]: Start isEmpty. Operand 4799 states and 7175 transitions. [2024-10-14 04:55:06,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 04:55:06,886 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:55:06,886 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:55:06,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 04:55:06,886 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:55:06,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:55:06,887 INFO L85 PathProgramCache]: Analyzing trace with hash -555411411, now seen corresponding path program 1 times [2024-10-14 04:55:06,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:55:06,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024678390] [2024-10-14 04:55:06,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:06,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:55:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 04:55:06,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:06,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024678390] [2024-10-14 04:55:06,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024678390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:55:06,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:55:06,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 04:55:06,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513026278] [2024-10-14 04:55:06,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:55:06,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 04:55:06,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:06,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 04:55:06,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 04:55:07,000 INFO L87 Difference]: Start difference. First operand 4799 states and 7175 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:07,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:55:07,250 INFO L93 Difference]: Finished difference Result 10105 states and 14788 transitions. [2024-10-14 04:55:07,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 04:55:07,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-14 04:55:07,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:55:07,270 INFO L225 Difference]: With dead ends: 10105 [2024-10-14 04:55:07,271 INFO L226 Difference]: Without dead ends: 8847 [2024-10-14 04:55:07,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-14 04:55:07,277 INFO L432 NwaCegarLoop]: 1571 mSDtfsCounter, 4677 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 04:55:07,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4677 Valid, 3299 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 04:55:07,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8847 states. [2024-10-14 04:55:07,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8847 to 6687. [2024-10-14 04:55:07,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6687 states, 6685 states have (on average 1.4706058339566193) internal successors, (9831), 6686 states have internal predecessors, (9831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:07,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6687 states to 6687 states and 9831 transitions. [2024-10-14 04:55:07,596 INFO L78 Accepts]: Start accepts. Automaton has 6687 states and 9831 transitions. Word has length 61 [2024-10-14 04:55:07,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:55:07,596 INFO L471 AbstractCegarLoop]: Abstraction has 6687 states and 9831 transitions. [2024-10-14 04:55:07,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:07,597 INFO L276 IsEmpty]: Start isEmpty. Operand 6687 states and 9831 transitions. [2024-10-14 04:55:07,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 04:55:07,598 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:55:07,598 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:55:07,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 04:55:07,599 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:55:07,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:55:07,599 INFO L85 PathProgramCache]: Analyzing trace with hash 333322029, now seen corresponding path program 1 times [2024-10-14 04:55:07,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:55:07,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802135642] [2024-10-14 04:55:07,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:07,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:55:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-14 04:55:07,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:07,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802135642] [2024-10-14 04:55:07,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802135642] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:55:07,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:55:07,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 04:55:07,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273890285] [2024-10-14 04:55:07,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:55:07,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 04:55:07,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:07,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 04:55:07,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 04:55:07,751 INFO L87 Difference]: Start difference. First operand 6687 states and 9831 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:08,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:55:08,098 INFO L93 Difference]: Finished difference Result 11361 states and 16572 transitions. [2024-10-14 04:55:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 04:55:08,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-14 04:55:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:55:08,122 INFO L225 Difference]: With dead ends: 11361 [2024-10-14 04:55:08,122 INFO L226 Difference]: Without dead ends: 10103 [2024-10-14 04:55:08,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-14 04:55:08,130 INFO L432 NwaCegarLoop]: 1573 mSDtfsCounter, 4667 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 04:55:08,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3303 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 04:55:08,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10103 states. [2024-10-14 04:55:08,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10103 to 7943. [2024-10-14 04:55:08,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7943 states, 7941 states have (on average 1.4626621332325904) internal successors, (11615), 7942 states have internal predecessors, (11615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7943 states to 7943 states and 11615 transitions. [2024-10-14 04:55:08,470 INFO L78 Accepts]: Start accepts. Automaton has 7943 states and 11615 transitions. Word has length 61 [2024-10-14 04:55:08,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:55:08,470 INFO L471 AbstractCegarLoop]: Abstraction has 7943 states and 11615 transitions. [2024-10-14 04:55:08,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:08,471 INFO L276 IsEmpty]: Start isEmpty. Operand 7943 states and 11615 transitions. [2024-10-14 04:55:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-14 04:55:08,473 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:55:08,474 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 04:55:08,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 04:55:08,474 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:55:08,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:55:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1335830763, now seen corresponding path program 1 times [2024-10-14 04:55:08,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:55:08,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958412355] [2024-10-14 04:55:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:08,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:55:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:08,593 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:08,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:08,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958412355] [2024-10-14 04:55:08,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958412355] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:55:08,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:55:08,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 04:55:08,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798702569] [2024-10-14 04:55:08,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:55:08,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:55:08,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:08,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:55:08,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:55:08,596 INFO L87 Difference]: Start difference. First operand 7943 states and 11615 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:55:08,751 INFO L93 Difference]: Finished difference Result 11996 states and 17467 transitions. [2024-10-14 04:55:08,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:55:08,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2024-10-14 04:55:08,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:55:08,764 INFO L225 Difference]: With dead ends: 11996 [2024-10-14 04:55:08,765 INFO L226 Difference]: Without dead ends: 6338 [2024-10-14 04:55:08,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:55:08,776 INFO L432 NwaCegarLoop]: 1554 mSDtfsCounter, 42 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:55:08,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3062 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:55:08,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6338 states. [2024-10-14 04:55:08,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6338 to 6336. [2024-10-14 04:55:08,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6336 states, 6334 states have (on average 1.4777391853489106) internal successors, (9360), 6335 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:08,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 9360 transitions. [2024-10-14 04:55:08,924 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 9360 transitions. Word has length 63 [2024-10-14 04:55:08,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:55:08,924 INFO L471 AbstractCegarLoop]: Abstraction has 6336 states and 9360 transitions. [2024-10-14 04:55:08,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:08,925 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 9360 transitions. [2024-10-14 04:55:08,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-14 04:55:08,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:55:08,926 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:55:08,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 04:55:08,926 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:55:08,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:55:08,926 INFO L85 PathProgramCache]: Analyzing trace with hash 618536146, now seen corresponding path program 1 times [2024-10-14 04:55:08,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:55:08,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978036887] [2024-10-14 04:55:08,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:08,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:55:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:09,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 04:55:09,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:09,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978036887] [2024-10-14 04:55:09,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978036887] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:55:09,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:55:09,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 04:55:09,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789133536] [2024-10-14 04:55:09,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:55:09,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 04:55:09,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:09,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 04:55:09,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 04:55:09,120 INFO L87 Difference]: Start difference. First operand 6336 states and 9360 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:09,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:55:09,392 INFO L93 Difference]: Finished difference Result 9930 states and 14549 transitions. [2024-10-14 04:55:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 04:55:09,393 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 63 [2024-10-14 04:55:09,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:55:09,412 INFO L225 Difference]: With dead ends: 9930 [2024-10-14 04:55:09,413 INFO L226 Difference]: Without dead ends: 9032 [2024-10-14 04:55:09,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-14 04:55:09,419 INFO L432 NwaCegarLoop]: 1569 mSDtfsCounter, 4655 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4655 SdHoareTripleChecker+Valid, 3379 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 04:55:09,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4655 Valid, 3379 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 04:55:09,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9032 states. [2024-10-14 04:55:09,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9032 to 7232. [2024-10-14 04:55:09,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7232 states, 7230 states have (on average 1.4716459197787) internal successors, (10640), 7231 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:09,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7232 states to 7232 states and 10640 transitions. [2024-10-14 04:55:09,637 INFO L78 Accepts]: Start accepts. Automaton has 7232 states and 10640 transitions. Word has length 63 [2024-10-14 04:55:09,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:55:09,638 INFO L471 AbstractCegarLoop]: Abstraction has 7232 states and 10640 transitions. [2024-10-14 04:55:09,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:09,638 INFO L276 IsEmpty]: Start isEmpty. Operand 7232 states and 10640 transitions. [2024-10-14 04:55:09,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-14 04:55:09,639 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:55:09,639 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 04:55:09,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 04:55:09,640 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:55:09,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:55:09,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1387312901, now seen corresponding path program 1 times [2024-10-14 04:55:09,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:55:09,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100297355] [2024-10-14 04:55:09,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:09,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:55:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:09,749 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:09,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:09,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100297355] [2024-10-14 04:55:09,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100297355] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:55:09,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:55:09,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 04:55:09,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397033472] [2024-10-14 04:55:09,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:55:09,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:55:09,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:09,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:55:09,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:55:09,751 INFO L87 Difference]: Start difference. First operand 7232 states and 10640 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:09,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:55:09,848 INFO L93 Difference]: Finished difference Result 9700 states and 14162 transitions. [2024-10-14 04:55:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:55:09,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2024-10-14 04:55:09,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:55:09,857 INFO L225 Difference]: With dead ends: 9700 [2024-10-14 04:55:09,858 INFO L226 Difference]: Without dead ends: 4770 [2024-10-14 04:55:09,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:55:09,865 INFO L432 NwaCegarLoop]: 1547 mSDtfsCounter, 37 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:55:09,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3047 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:55:09,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4770 states. [2024-10-14 04:55:09,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4770 to 4768. [2024-10-14 04:55:09,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4768 states, 4766 states have (on average 1.4846831724716743) internal successors, (7076), 4767 states have internal predecessors, (7076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:09,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 7076 transitions. [2024-10-14 04:55:09,992 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 7076 transitions. Word has length 64 [2024-10-14 04:55:09,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:55:09,992 INFO L471 AbstractCegarLoop]: Abstraction has 4768 states and 7076 transitions. [2024-10-14 04:55:09,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:09,992 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 7076 transitions. [2024-10-14 04:55:09,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-14 04:55:09,993 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:55:09,997 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:55:09,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 04:55:09,997 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:55:09,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:55:09,998 INFO L85 PathProgramCache]: Analyzing trace with hash -763378775, now seen corresponding path program 1 times [2024-10-14 04:55:09,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:55:09,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037899991] [2024-10-14 04:55:09,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:09,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:55:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:10,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:10,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037899991] [2024-10-14 04:55:10,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037899991] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:55:10,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:55:10,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 04:55:10,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97898273] [2024-10-14 04:55:10,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:55:10,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:55:10,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:10,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:55:10,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:55:10,092 INFO L87 Difference]: Start difference. First operand 4768 states and 7076 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:10,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:55:10,147 INFO L93 Difference]: Finished difference Result 6004 states and 8816 transitions. [2024-10-14 04:55:10,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:55:10,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-14 04:55:10,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:55:10,154 INFO L225 Difference]: With dead ends: 6004 [2024-10-14 04:55:10,154 INFO L226 Difference]: Without dead ends: 3538 [2024-10-14 04:55:10,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:55:10,157 INFO L432 NwaCegarLoop]: 1540 mSDtfsCounter, 34 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3032 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:55:10,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3032 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:55:10,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2024-10-14 04:55:10,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 3536. [2024-10-14 04:55:10,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3534 states have (on average 1.5042444821731749) internal successors, (5316), 3535 states have internal predecessors, (5316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:10,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5316 transitions. [2024-10-14 04:55:10,227 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5316 transitions. Word has length 66 [2024-10-14 04:55:10,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:55:10,227 INFO L471 AbstractCegarLoop]: Abstraction has 3536 states and 5316 transitions. [2024-10-14 04:55:10,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:10,228 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5316 transitions. [2024-10-14 04:55:10,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-14 04:55:10,229 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:55:10,229 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:55:10,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-14 04:55:10,229 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:55:10,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:55:10,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2083467223, now seen corresponding path program 1 times [2024-10-14 04:55:10,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:55:10,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792061424] [2024-10-14 04:55:10,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:10,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:55:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:10,312 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:10,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:10,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792061424] [2024-10-14 04:55:10,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792061424] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:55:10,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:55:10,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 04:55:10,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473075684] [2024-10-14 04:55:10,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:55:10,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:55:10,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:10,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:55:10,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:55:10,314 INFO L87 Difference]: Start difference. First operand 3536 states and 5316 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:10,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:55:10,354 INFO L93 Difference]: Finished difference Result 4156 states and 6176 transitions. [2024-10-14 04:55:10,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:55:10,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2024-10-14 04:55:10,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:55:10,360 INFO L225 Difference]: With dead ends: 4156 [2024-10-14 04:55:10,360 INFO L226 Difference]: Without dead ends: 2922 [2024-10-14 04:55:10,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:55:10,363 INFO L432 NwaCegarLoop]: 1533 mSDtfsCounter, 31 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:55:10,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3017 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:55:10,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2024-10-14 04:55:10,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2920. [2024-10-14 04:55:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2918 states have (on average 1.523989033584647) internal successors, (4447), 2919 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:10,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4447 transitions. [2024-10-14 04:55:10,411 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4447 transitions. Word has length 68 [2024-10-14 04:55:10,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:55:10,412 INFO L471 AbstractCegarLoop]: Abstraction has 2920 states and 4447 transitions. [2024-10-14 04:55:10,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:10,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4447 transitions. [2024-10-14 04:55:10,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-14 04:55:10,413 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:55:10,413 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:55:10,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 04:55:10,414 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:55:10,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:55:10,415 INFO L85 PathProgramCache]: Analyzing trace with hash -270766715, now seen corresponding path program 1 times [2024-10-14 04:55:10,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:55:10,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777053412] [2024-10-14 04:55:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:10,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:55:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:13,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:13,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777053412] [2024-10-14 04:55:13,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777053412] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:55:13,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15052772] [2024-10-14 04:55:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:13,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:55:13,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:55:13,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 04:55:13,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 04:55:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:13,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 04:55:13,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:55:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:13,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 04:55:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:14,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15052772] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 04:55:14,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 04:55:14,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-10-14 04:55:14,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338605117] [2024-10-14 04:55:14,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 04:55:14,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-14 04:55:14,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:14,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-14 04:55:14,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-10-14 04:55:14,844 INFO L87 Difference]: Start difference. First operand 2920 states and 4447 transitions. Second operand has 28 states, 28 states have (on average 6.535714285714286) internal successors, (183), 27 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:18,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:55:18,361 INFO L93 Difference]: Finished difference Result 6014 states and 8700 transitions. [2024-10-14 04:55:18,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-14 04:55:18,361 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.535714285714286) internal successors, (183), 27 states have internal predecessors, (183), 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 70 [2024-10-14 04:55:18,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:55:18,369 INFO L225 Difference]: With dead ends: 6014 [2024-10-14 04:55:18,369 INFO L226 Difference]: Without dead ends: 5396 [2024-10-14 04:55:18,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1055, Invalid=4201, Unknown=0, NotChecked=0, Total=5256 [2024-10-14 04:55:18,372 INFO L432 NwaCegarLoop]: 1485 mSDtfsCounter, 28680 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28680 SdHoareTripleChecker+Valid, 6359 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 04:55:18,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28680 Valid, 6359 Invalid, 871 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 04:55:18,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5396 states. [2024-10-14 04:55:18,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5396 to 5296. [2024-10-14 04:55:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 5294 states have (on average 1.438420853796751) internal successors, (7615), 5295 states have internal predecessors, (7615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 7615 transitions. [2024-10-14 04:55:18,513 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 7615 transitions. Word has length 70 [2024-10-14 04:55:18,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:55:18,514 INFO L471 AbstractCegarLoop]: Abstraction has 5296 states and 7615 transitions. [2024-10-14 04:55:18,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.535714285714286) internal successors, (183), 27 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:18,514 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 7615 transitions. [2024-10-14 04:55:18,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-14 04:55:18,515 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:55:18,516 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:55:18,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 04:55:18,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:55:18,720 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:55:18,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:55:18,721 INFO L85 PathProgramCache]: Analyzing trace with hash -995027586, now seen corresponding path program 1 times [2024-10-14 04:55:18,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:55:18,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140175048] [2024-10-14 04:55:18,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:18,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:55:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:19,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:19,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140175048] [2024-10-14 04:55:19,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140175048] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:55:19,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109257415] [2024-10-14 04:55:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:19,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:55:19,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:55:19,702 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 04:55:19,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 04:55:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:19,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 04:55:19,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:55:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:20,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 04:55:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:21,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109257415] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 04:55:21,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 04:55:21,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 33 [2024-10-14 04:55:21,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200256385] [2024-10-14 04:55:21,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 04:55:21,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-14 04:55:21,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:21,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-14 04:55:21,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=876, Unknown=0, NotChecked=0, Total=1056 [2024-10-14 04:55:21,166 INFO L87 Difference]: Start difference. First operand 5296 states and 7615 transitions. Second operand has 33 states, 33 states have (on average 5.606060606060606) internal successors, (185), 33 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:22,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:55:22,194 INFO L93 Difference]: Finished difference Result 11682 states and 16242 transitions. [2024-10-14 04:55:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-14 04:55:22,194 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.606060606060606) internal successors, (185), 33 states have internal predecessors, (185), 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 71 [2024-10-14 04:55:22,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:55:22,211 INFO L225 Difference]: With dead ends: 11682 [2024-10-14 04:55:22,211 INFO L226 Difference]: Without dead ends: 8688 [2024-10-14 04:55:22,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=522, Invalid=1830, Unknown=0, NotChecked=0, Total=2352 [2024-10-14 04:55:22,218 INFO L432 NwaCegarLoop]: 1511 mSDtfsCounter, 15045 mSDsluCounter, 7917 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15045 SdHoareTripleChecker+Valid, 9428 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 04:55:22,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15045 Valid, 9428 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 04:55:22,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8688 states. [2024-10-14 04:55:22,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8688 to 8552. [2024-10-14 04:55:22,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8552 states, 8550 states have (on average 1.3833918128654972) internal successors, (11828), 8551 states have internal predecessors, (11828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:22,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8552 states to 8552 states and 11828 transitions. [2024-10-14 04:55:22,449 INFO L78 Accepts]: Start accepts. Automaton has 8552 states and 11828 transitions. Word has length 71 [2024-10-14 04:55:22,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:55:22,450 INFO L471 AbstractCegarLoop]: Abstraction has 8552 states and 11828 transitions. [2024-10-14 04:55:22,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.606060606060606) internal successors, (185), 33 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:55:22,450 INFO L276 IsEmpty]: Start isEmpty. Operand 8552 states and 11828 transitions. [2024-10-14 04:55:22,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-14 04:55:22,452 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:55:22,452 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:55:22,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 04:55:22,652 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,SelfDestructingSolverStorable20 [2024-10-14 04:55:22,653 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:55:22,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:55:22,654 INFO L85 PathProgramCache]: Analyzing trace with hash -453432093, now seen corresponding path program 1 times [2024-10-14 04:55:22,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:55:22,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823205417] [2024-10-14 04:55:22,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:22,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:55:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:23,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:55:23,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823205417] [2024-10-14 04:55:23,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823205417] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:55:23,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524658879] [2024-10-14 04:55:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:55:23,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:55:23,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:55:23,097 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 04:55:23,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 04:55:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:55:23,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-14 04:55:23,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:55:33,538 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:33,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 04:55:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:55:37,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524658879] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 04:55:37,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 04:55:37,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 24] total 57 [2024-10-14 04:55:37,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944868707] [2024-10-14 04:55:37,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 04:55:37,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-10-14 04:55:37,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:55:37,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-10-14 04:55:37,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=2792, Unknown=0, NotChecked=0, Total=3192 [2024-10-14 04:55:37,048 INFO L87 Difference]: Start difference. First operand 8552 states and 11828 transitions. Second operand has 57 states, 57 states have (on average 3.456140350877193) internal successors, (197), 57 states have internal predecessors, (197), 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)