./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label10.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/eca-rers2012/Problem17_label10.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 afd00c5a93002b45b7132abaca316e0e6d6e8def0f5c0ab18ec075bedc375e21 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 23:54:35,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 23:54:35,890 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 23:54:35,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 23:54:35,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 23:54:35,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 23:54:35,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 23:54:35,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 23:54:35,908 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 23:54:35,908 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 23:54:35,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 23:54:35,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 23:54:35,909 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 23:54:35,910 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 23:54:35,910 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 23:54:35,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 23:54:35,912 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 23:54:35,912 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 23:54:35,913 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 23:54:35,913 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 23:54:35,913 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 23:54:35,915 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 23:54:35,916 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 23:54:35,916 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 23:54:35,916 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 23:54:35,916 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 23:54:35,916 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 23:54:35,916 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 23:54:35,917 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 23:54:35,917 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 23:54:35,917 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 23:54:35,917 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 23:54:35,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:54:35,918 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 23:54:35,918 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 23:54:35,918 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 23:54:35,918 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 23:54:35,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 23:54:35,918 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 23:54:35,919 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 23:54:35,919 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 23:54:35,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 23:54:35,923 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afd00c5a93002b45b7132abaca316e0e6d6e8def0f5c0ab18ec075bedc375e21 [2024-10-13 23:54:36,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 23:54:36,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 23:54:36,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 23:54:36,165 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 23:54:36,166 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 23:54:36,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label10.c [2024-10-13 23:54:37,413 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 23:54:37,718 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 23:54:37,719 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label10.c [2024-10-13 23:54:37,741 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72cb7e5e/99794b9a3a08412f973aae32c3cc2ebe/FLAGde7df4630 [2024-10-13 23:54:37,998 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72cb7e5e/99794b9a3a08412f973aae32c3cc2ebe [2024-10-13 23:54:38,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 23:54:38,001 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 23:54:38,002 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 23:54:38,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 23:54:38,006 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 23:54:38,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:54:37" (1/1) ... [2024-10-13 23:54:38,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d39a1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:38, skipping insertion in model container [2024-10-13 23:54:38,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:54:37" (1/1) ... [2024-10-13 23:54:38,069 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 23:54:38,265 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/eca-rers2012/Problem17_label10.c[5916,5929] [2024-10-13 23:54:38,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:54:38,714 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 23:54:38,737 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/eca-rers2012/Problem17_label10.c[5916,5929] [2024-10-13 23:54:38,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:54:38,986 INFO L204 MainTranslator]: Completed translation [2024-10-13 23:54:38,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:38 WrapperNode [2024-10-13 23:54:38,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 23:54:38,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 23:54:38,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 23:54:38,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 23:54:38,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:38" (1/1) ... [2024-10-13 23:54:39,025 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:38" (1/1) ... [2024-10-13 23:54:39,262 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-10-13 23:54:39,262 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 23:54:39,263 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 23:54:39,263 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 23:54:39,263 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 23:54:39,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:38" (1/1) ... [2024-10-13 23:54:39,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:38" (1/1) ... [2024-10-13 23:54:39,310 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:38" (1/1) ... [2024-10-13 23:54:39,471 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]. [2024-10-13 23:54:39,472 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:38" (1/1) ... [2024-10-13 23:54:39,472 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:38" (1/1) ... [2024-10-13 23:54:39,537 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:38" (1/1) ... [2024-10-13 23:54:39,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:38" (1/1) ... [2024-10-13 23:54:39,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:38" (1/1) ... [2024-10-13 23:54:39,596 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:38" (1/1) ... [2024-10-13 23:54:39,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 23:54:39,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 23:54:39,638 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 23:54:39,638 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 23:54:39,639 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:38" (1/1) ... [2024-10-13 23:54:39,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:54:39,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:54:39,667 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) [2024-10-13 23:54:39,669 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 [2024-10-13 23:54:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 23:54:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 23:54:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 23:54:39,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 23:54:39,808 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 23:54:39,809 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 23:54:42,190 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-10-13 23:54:42,190 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 23:54:42,234 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 23:54:42,235 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 23:54:42,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:54:42 BoogieIcfgContainer [2024-10-13 23:54:42,235 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 23:54:42,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 23:54:42,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 23:54:42,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 23:54:42,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:54:37" (1/3) ... [2024-10-13 23:54:42,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77822a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:54:42, skipping insertion in model container [2024-10-13 23:54:42,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:54:38" (2/3) ... [2024-10-13 23:54:42,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77822a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:54:42, skipping insertion in model container [2024-10-13 23:54:42,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:54:42" (3/3) ... [2024-10-13 23:54:42,245 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label10.c [2024-10-13 23:54:42,260 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 23:54:42,260 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 23:54:42,331 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 23:54:42,337 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;@99b1ed7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 23:54:42,338 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 23:54:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:42,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-13 23:54:42,352 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:42,353 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:42,353 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:42,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:42,358 INFO L85 PathProgramCache]: Analyzing trace with hash -717403638, now seen corresponding path program 1 times [2024-10-13 23:54:42,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:42,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071491425] [2024-10-13 23:54:42,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:42,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:54:42,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:42,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071491425] [2024-10-13 23:54:42,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071491425] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:42,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:42,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:54:42,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863950488] [2024-10-13 23:54:42,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:42,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 23:54:42,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:42,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 23:54:42,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:54:42,548 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 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 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:42,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:42,611 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2024-10-13 23:54:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 23:54:42,613 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-13 23:54:42,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:42,623 INFO L225 Difference]: With dead ends: 1055 [2024-10-13 23:54:42,623 INFO L226 Difference]: Without dead ends: 526 [2024-10-13 23:54:42,627 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 [2024-10-13 23:54:42,630 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:42,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 23:54:42,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-13 23:54:42,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-10-13 23:54:42,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2024-10-13 23:54:42,687 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 38 [2024-10-13 23:54:42,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:42,688 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2024-10-13 23:54:42,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:42,688 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2024-10-13 23:54:42,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-13 23:54:42,689 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:42,689 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:42,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 23:54:42,689 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:42,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:42,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1322621193, now seen corresponding path program 1 times [2024-10-13 23:54:42,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:42,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60714790] [2024-10-13 23:54:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:42,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:54:42,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:42,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60714790] [2024-10-13 23:54:42,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60714790] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:42,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:42,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:54:42,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978404647] [2024-10-13 23:54:42,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:42,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:42,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:42,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:42,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:42,855 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:44,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:44,757 INFO L93 Difference]: Finished difference Result 1499 states and 2693 transitions. [2024-10-13 23:54:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:44,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-13 23:54:44,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:44,761 INFO L225 Difference]: With dead ends: 1499 [2024-10-13 23:54:44,761 INFO L226 Difference]: Without dead ends: 974 [2024-10-13 23:54:44,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:44,764 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 435 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:44,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 495 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-13 23:54:44,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2024-10-13 23:54:44,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 971. [2024-10-13 23:54:44,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5082474226804123) internal successors, (1463), 970 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:44,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1463 transitions. [2024-10-13 23:54:44,799 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1463 transitions. Word has length 38 [2024-10-13 23:54:44,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:44,800 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1463 transitions. [2024-10-13 23:54:44,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:44,800 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1463 transitions. [2024-10-13 23:54:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-13 23:54:44,802 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:44,802 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:44,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 23:54:44,803 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:44,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:44,803 INFO L85 PathProgramCache]: Analyzing trace with hash 447821372, now seen corresponding path program 1 times [2024-10-13 23:54:44,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:44,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748784024] [2024-10-13 23:54:44,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:44,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:54:45,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:45,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748784024] [2024-10-13 23:54:45,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748784024] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:45,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:45,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:54:45,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877700446] [2024-10-13 23:54:45,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:45,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:45,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:45,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:45,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:45,079 INFO L87 Difference]: Start difference. First operand 971 states and 1463 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:46,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:46,947 INFO L93 Difference]: Finished difference Result 2813 states and 4241 transitions. [2024-10-13 23:54:46,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:46,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2024-10-13 23:54:46,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:46,955 INFO L225 Difference]: With dead ends: 2813 [2024-10-13 23:54:46,956 INFO L226 Difference]: Without dead ends: 1843 [2024-10-13 23:54:46,959 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 [2024-10-13 23:54:46,960 INFO L432 NwaCegarLoop]: 851 mSDtfsCounter, 452 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:46,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 918 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-13 23:54:46,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2024-10-13 23:54:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1841. [2024-10-13 23:54:46,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3603260869565217) internal successors, (2503), 1840 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:46,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2503 transitions. [2024-10-13 23:54:46,994 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2503 transitions. Word has length 108 [2024-10-13 23:54:46,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:46,995 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2503 transitions. [2024-10-13 23:54:46,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:46,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2503 transitions. [2024-10-13 23:54:46,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-13 23:54:46,997 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:46,997 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:46,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 23:54:46,998 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:46,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:47,002 INFO L85 PathProgramCache]: Analyzing trace with hash -838519879, now seen corresponding path program 1 times [2024-10-13 23:54:47,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:47,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032051212] [2024-10-13 23:54:47,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:47,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:54:47,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:47,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032051212] [2024-10-13 23:54:47,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032051212] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:47,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:47,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:54:47,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585290892] [2024-10-13 23:54:47,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:47,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:47,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:47,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:47,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:47,176 INFO L87 Difference]: Start difference. First operand 1841 states and 2503 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:48,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:48,747 INFO L93 Difference]: Finished difference Result 5394 states and 7325 transitions. [2024-10-13 23:54:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:48,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2024-10-13 23:54:48,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:48,755 INFO L225 Difference]: With dead ends: 5394 [2024-10-13 23:54:48,755 INFO L226 Difference]: Without dead ends: 2700 [2024-10-13 23:54:48,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:48,761 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:48,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-13 23:54:48,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2024-10-13 23:54:48,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2700. [2024-10-13 23:54:48,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2699 states have (on average 1.1919229344201556) internal successors, (3217), 2699 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3217 transitions. [2024-10-13 23:54:48,796 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3217 transitions. Word has length 130 [2024-10-13 23:54:48,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:48,797 INFO L471 AbstractCegarLoop]: Abstraction has 2700 states and 3217 transitions. [2024-10-13 23:54:48,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:48,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3217 transitions. [2024-10-13 23:54:48,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-10-13 23:54:48,800 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:48,800 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:48,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 23:54:48,800 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:48,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:48,801 INFO L85 PathProgramCache]: Analyzing trace with hash 575116774, now seen corresponding path program 1 times [2024-10-13 23:54:48,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:48,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150798215] [2024-10-13 23:54:48,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:48,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:54:49,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:49,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150798215] [2024-10-13 23:54:49,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150798215] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:49,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:49,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:54:49,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948531760] [2024-10-13 23:54:49,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:49,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:49,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:49,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:49,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:49,028 INFO L87 Difference]: Start difference. First operand 2700 states and 3217 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:50,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:50,345 INFO L93 Difference]: Finished difference Result 7107 states and 8597 transitions. [2024-10-13 23:54:50,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:50,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2024-10-13 23:54:50,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:50,357 INFO L225 Difference]: With dead ends: 7107 [2024-10-13 23:54:50,357 INFO L226 Difference]: Without dead ends: 4408 [2024-10-13 23:54:50,360 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 [2024-10-13 23:54:50,362 INFO L432 NwaCegarLoop]: 724 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:50,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 781 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-13 23:54:50,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2024-10-13 23:54:50,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4408. [2024-10-13 23:54:50,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4408 states, 4407 states have (on average 1.1706376219650556) internal successors, (5159), 4407 states have internal predecessors, (5159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:50,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 5159 transitions. [2024-10-13 23:54:50,420 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 5159 transitions. Word has length 190 [2024-10-13 23:54:50,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:50,421 INFO L471 AbstractCegarLoop]: Abstraction has 4408 states and 5159 transitions. [2024-10-13 23:54:50,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:50,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 5159 transitions. [2024-10-13 23:54:50,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-10-13 23:54:50,425 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:50,425 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:50,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 23:54:50,425 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:50,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:50,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1024810741, now seen corresponding path program 1 times [2024-10-13 23:54:50,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:50,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785602075] [2024-10-13 23:54:50,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:50,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 23:54:50,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:50,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785602075] [2024-10-13 23:54:50,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785602075] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:50,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:50,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:54:50,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153510699] [2024-10-13 23:54:50,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:50,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:50,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:50,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:50,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:50,568 INFO L87 Difference]: Start difference. First operand 4408 states and 5159 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:51,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:51,917 INFO L93 Difference]: Finished difference Result 10935 states and 12969 transitions. [2024-10-13 23:54:51,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:51,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2024-10-13 23:54:51,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:51,933 INFO L225 Difference]: With dead ends: 10935 [2024-10-13 23:54:51,934 INFO L226 Difference]: Without dead ends: 6527 [2024-10-13 23:54:51,938 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 [2024-10-13 23:54:51,939 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 411 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:51,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 442 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-13 23:54:51,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6527 states. [2024-10-13 23:54:51,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6527 to 4381. [2024-10-13 23:54:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4381 states, 4380 states have (on average 1.1684931506849314) internal successors, (5118), 4380 states have internal predecessors, (5118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:52,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 5118 transitions. [2024-10-13 23:54:52,002 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 5118 transitions. Word has length 192 [2024-10-13 23:54:52,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:52,003 INFO L471 AbstractCegarLoop]: Abstraction has 4381 states and 5118 transitions. [2024-10-13 23:54:52,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:52,003 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 5118 transitions. [2024-10-13 23:54:52,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-10-13 23:54:52,005 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:52,005 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:52,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 23:54:52,006 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:52,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:52,006 INFO L85 PathProgramCache]: Analyzing trace with hash -364876923, now seen corresponding path program 1 times [2024-10-13 23:54:52,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:52,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573141891] [2024-10-13 23:54:52,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:52,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-13 23:54:52,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:52,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573141891] [2024-10-13 23:54:52,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573141891] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:52,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:52,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:54:52,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314716321] [2024-10-13 23:54:52,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:52,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:52,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:52,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:52,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:52,268 INFO L87 Difference]: Start difference. First operand 4381 states and 5118 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:53,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:53,733 INFO L93 Difference]: Finished difference Result 10909 states and 12923 transitions. [2024-10-13 23:54:53,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:53,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 258 [2024-10-13 23:54:53,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:53,751 INFO L225 Difference]: With dead ends: 10909 [2024-10-13 23:54:53,751 INFO L226 Difference]: Without dead ends: 6529 [2024-10-13 23:54:53,757 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 [2024-10-13 23:54:53,757 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 465 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:53,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 411 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-13 23:54:53,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6529 states. [2024-10-13 23:54:53,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6529 to 6095. [2024-10-13 23:54:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6095 states, 6094 states have (on average 1.1885461109287825) internal successors, (7243), 6094 states have internal predecessors, (7243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:53,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6095 states to 6095 states and 7243 transitions. [2024-10-13 23:54:53,850 INFO L78 Accepts]: Start accepts. Automaton has 6095 states and 7243 transitions. Word has length 258 [2024-10-13 23:54:53,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:53,851 INFO L471 AbstractCegarLoop]: Abstraction has 6095 states and 7243 transitions. [2024-10-13 23:54:53,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:53,851 INFO L276 IsEmpty]: Start isEmpty. Operand 6095 states and 7243 transitions. [2024-10-13 23:54:53,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-10-13 23:54:53,858 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:53,859 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:53,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 23:54:53,859 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:53,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:53,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1772865783, now seen corresponding path program 1 times [2024-10-13 23:54:53,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:53,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126367901] [2024-10-13 23:54:53,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:53,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-13 23:54:54,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:54,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126367901] [2024-10-13 23:54:54,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126367901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:54,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:54,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:54:54,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876930428] [2024-10-13 23:54:54,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:54,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:54,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:54,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:54,109 INFO L87 Difference]: Start difference. First operand 6095 states and 7243 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:55,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:55,807 INFO L93 Difference]: Finished difference Result 15623 states and 18732 transitions. [2024-10-13 23:54:55,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:55,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 270 [2024-10-13 23:54:55,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:55,841 INFO L225 Difference]: With dead ends: 15623 [2024-10-13 23:54:55,841 INFO L226 Difference]: Without dead ends: 9092 [2024-10-13 23:54:55,845 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 [2024-10-13 23:54:55,846 INFO L432 NwaCegarLoop]: 582 mSDtfsCounter, 494 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:55,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 624 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-13 23:54:55,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9092 states. [2024-10-13 23:54:55,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9092 to 8659. [2024-10-13 23:54:55,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8659 states, 8658 states have (on average 1.180988680988681) internal successors, (10225), 8658 states have internal predecessors, (10225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8659 states to 8659 states and 10225 transitions. [2024-10-13 23:54:55,947 INFO L78 Accepts]: Start accepts. Automaton has 8659 states and 10225 transitions. Word has length 270 [2024-10-13 23:54:55,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:55,948 INFO L471 AbstractCegarLoop]: Abstraction has 8659 states and 10225 transitions. [2024-10-13 23:54:55,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:55,948 INFO L276 IsEmpty]: Start isEmpty. Operand 8659 states and 10225 transitions. [2024-10-13 23:54:55,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-10-13 23:54:55,951 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:55,951 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:54:55,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 23:54:55,951 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:55,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:55,952 INFO L85 PathProgramCache]: Analyzing trace with hash -668883366, now seen corresponding path program 1 times [2024-10-13 23:54:55,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:55,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078549883] [2024-10-13 23:54:55,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:55,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:56,163 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-13 23:54:56,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:56,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078549883] [2024-10-13 23:54:56,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078549883] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:56,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:56,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:54:56,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285205197] [2024-10-13 23:54:56,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:56,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:54:56,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:56,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:54:56,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:54:56,166 INFO L87 Difference]: Start difference. First operand 8659 states and 10225 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:57,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:54:57,467 INFO L93 Difference]: Finished difference Result 20717 states and 24609 transitions. [2024-10-13 23:54:57,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:54:57,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 275 [2024-10-13 23:54:57,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:54:57,489 INFO L225 Difference]: With dead ends: 20717 [2024-10-13 23:54:57,489 INFO L226 Difference]: Without dead ends: 12059 [2024-10-13 23:54:57,498 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 [2024-10-13 23:54:57,499 INFO L432 NwaCegarLoop]: 758 mSDtfsCounter, 379 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-13 23:54:57,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 823 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-13 23:54:57,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12059 states. [2024-10-13 23:54:57,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12059 to 11209. [2024-10-13 23:54:57,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11209 states, 11208 states have (on average 1.1578336902212705) internal successors, (12977), 11208 states have internal predecessors, (12977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:57,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11209 states to 11209 states and 12977 transitions. [2024-10-13 23:54:57,689 INFO L78 Accepts]: Start accepts. Automaton has 11209 states and 12977 transitions. Word has length 275 [2024-10-13 23:54:57,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:54:57,690 INFO L471 AbstractCegarLoop]: Abstraction has 11209 states and 12977 transitions. [2024-10-13 23:54:57,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:54:57,691 INFO L276 IsEmpty]: Start isEmpty. Operand 11209 states and 12977 transitions. [2024-10-13 23:54:57,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-10-13 23:54:57,694 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:54:57,694 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 23:54:57,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 23:54:57,694 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:54:57,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:54:57,698 INFO L85 PathProgramCache]: Analyzing trace with hash -886528385, now seen corresponding path program 1 times [2024-10-13 23:54:57,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:54:57,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381262288] [2024-10-13 23:54:57,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:54:57,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:54:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:54:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-13 23:54:58,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:54:58,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381262288] [2024-10-13 23:54:58,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381262288] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:54:58,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:54:58,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 23:54:58,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907469830] [2024-10-13 23:54:58,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:54:58,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:54:58,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:54:58,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:54:58,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:54:58,074 INFO L87 Difference]: Start difference. First operand 11209 states and 12977 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:00,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:00,533 INFO L93 Difference]: Finished difference Result 40369 states and 46571 transitions. [2024-10-13 23:55:00,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:55:00,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2024-10-13 23:55:00,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:00,572 INFO L225 Difference]: With dead ends: 40369 [2024-10-13 23:55:00,573 INFO L226 Difference]: Without dead ends: 27448 [2024-10-13 23:55:00,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:55:00,585 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 875 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2597 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 2597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:00,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 292 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 2597 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-13 23:55:00,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27448 states. [2024-10-13 23:55:00,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27448 to 26979. [2024-10-13 23:55:00,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26979 states, 26978 states have (on average 1.1290310623470976) internal successors, (30459), 26978 states have internal predecessors, (30459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:00,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26979 states to 26979 states and 30459 transitions. [2024-10-13 23:55:00,847 INFO L78 Accepts]: Start accepts. Automaton has 26979 states and 30459 transitions. Word has length 298 [2024-10-13 23:55:00,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:00,847 INFO L471 AbstractCegarLoop]: Abstraction has 26979 states and 30459 transitions. [2024-10-13 23:55:00,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:00,848 INFO L276 IsEmpty]: Start isEmpty. Operand 26979 states and 30459 transitions. [2024-10-13 23:55:00,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-10-13 23:55:00,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:00,860 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:00,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 23:55:00,860 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:00,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:00,861 INFO L85 PathProgramCache]: Analyzing trace with hash -84414250, now seen corresponding path program 1 times [2024-10-13 23:55:00,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:00,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260891240] [2024-10-13 23:55:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:00,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 216 proven. 82 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-13 23:55:01,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:01,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260891240] [2024-10-13 23:55:01,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260891240] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:55:01,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489289728] [2024-10-13 23:55:01,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:01,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:55:01,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:55:01,347 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) [2024-10-13 23:55:01,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 23:55:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:01,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 23:55:01,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:55:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 182 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:55:01,867 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 23:55:02,268 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 335 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:55:02,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489289728] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 23:55:02,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 23:55:02,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2024-10-13 23:55:02,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99239941] [2024-10-13 23:55:02,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:02,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 23:55:02,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:02,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 23:55:02,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-10-13 23:55:02,271 INFO L87 Difference]: Start difference. First operand 26979 states and 30459 transitions. Second operand has 5 states, 5 states have (on average 75.8) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:04,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:04,995 INFO L93 Difference]: Finished difference Result 75669 states and 85244 transitions. [2024-10-13 23:55:04,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 23:55:04,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 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 379 [2024-10-13 23:55:04,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:05,060 INFO L225 Difference]: With dead ends: 75669 [2024-10-13 23:55:05,060 INFO L226 Difference]: Without dead ends: 47839 [2024-10-13 23:55:05,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-10-13 23:55:05,084 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 1439 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 2675 mSolverCounterSat, 684 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 3359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 2675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:05,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 162 Invalid, 3359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 2675 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-13 23:55:05,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47839 states. [2024-10-13 23:55:05,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47839 to 46122. [2024-10-13 23:55:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46122 states, 46121 states have (on average 1.102014266819887) internal successors, (50826), 46121 states have internal predecessors, (50826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:05,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46122 states to 46122 states and 50826 transitions. [2024-10-13 23:55:05,534 INFO L78 Accepts]: Start accepts. Automaton has 46122 states and 50826 transitions. Word has length 379 [2024-10-13 23:55:05,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:05,534 INFO L471 AbstractCegarLoop]: Abstraction has 46122 states and 50826 transitions. [2024-10-13 23:55:05,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:05,535 INFO L276 IsEmpty]: Start isEmpty. Operand 46122 states and 50826 transitions. [2024-10-13 23:55:05,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-10-13 23:55:05,541 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:05,542 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:05,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 23:55:05,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-13 23:55:05,746 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:05,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:05,746 INFO L85 PathProgramCache]: Analyzing trace with hash 430858120, now seen corresponding path program 1 times [2024-10-13 23:55:05,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:05,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667654465] [2024-10-13 23:55:05,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:05,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 519 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-10-13 23:55:06,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:06,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667654465] [2024-10-13 23:55:06,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667654465] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:06,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:06,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:55:06,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753211412] [2024-10-13 23:55:06,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:06,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:55:06,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:06,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:55:06,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:06,086 INFO L87 Difference]: Start difference. First operand 46122 states and 50826 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:07,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:07,441 INFO L93 Difference]: Finished difference Result 108859 states and 120237 transitions. [2024-10-13 23:55:07,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:55:07,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 384 [2024-10-13 23:55:07,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:07,525 INFO L225 Difference]: With dead ends: 108859 [2024-10-13 23:55:07,526 INFO L226 Difference]: Without dead ends: 62738 [2024-10-13 23:55:07,564 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 [2024-10-13 23:55:07,565 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 396 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:07,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 332 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-13 23:55:07,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62738 states. [2024-10-13 23:55:08,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62738 to 61438. [2024-10-13 23:55:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61438 states, 61437 states have (on average 1.0894900467145205) internal successors, (66935), 61437 states have internal predecessors, (66935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:08,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61438 states to 61438 states and 66935 transitions. [2024-10-13 23:55:08,539 INFO L78 Accepts]: Start accepts. Automaton has 61438 states and 66935 transitions. Word has length 384 [2024-10-13 23:55:08,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:08,539 INFO L471 AbstractCegarLoop]: Abstraction has 61438 states and 66935 transitions. [2024-10-13 23:55:08,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:08,540 INFO L276 IsEmpty]: Start isEmpty. Operand 61438 states and 66935 transitions. [2024-10-13 23:55:08,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-10-13 23:55:08,548 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:08,548 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:08,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 23:55:08,548 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:08,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:08,549 INFO L85 PathProgramCache]: Analyzing trace with hash -221703091, now seen corresponding path program 1 times [2024-10-13 23:55:08,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:08,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172033188] [2024-10-13 23:55:08,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:08,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:08,969 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-10-13 23:55:08,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:08,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172033188] [2024-10-13 23:55:08,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172033188] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:08,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:08,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:55:08,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973740691] [2024-10-13 23:55:08,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:08,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:55:08,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:08,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:55:08,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:08,972 INFO L87 Difference]: Start difference. First operand 61438 states and 66935 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:10,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:10,609 INFO L93 Difference]: Finished difference Result 140363 states and 152847 transitions. [2024-10-13 23:55:10,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:55:10,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 401 [2024-10-13 23:55:10,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:10,694 INFO L225 Difference]: With dead ends: 140363 [2024-10-13 23:55:10,695 INFO L226 Difference]: Without dead ends: 78495 [2024-10-13 23:55:10,723 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 [2024-10-13 23:55:10,723 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 459 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:10,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 201 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-13 23:55:10,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78495 states. [2024-10-13 23:55:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78495 to 73346. [2024-10-13 23:55:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73346 states, 73345 states have (on average 1.0878723839389188) internal successors, (79790), 73345 states have internal predecessors, (79790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73346 states to 73346 states and 79790 transitions. [2024-10-13 23:55:11,689 INFO L78 Accepts]: Start accepts. Automaton has 73346 states and 79790 transitions. Word has length 401 [2024-10-13 23:55:11,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:11,690 INFO L471 AbstractCegarLoop]: Abstraction has 73346 states and 79790 transitions. [2024-10-13 23:55:11,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:11,690 INFO L276 IsEmpty]: Start isEmpty. Operand 73346 states and 79790 transitions. [2024-10-13 23:55:11,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-10-13 23:55:11,698 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:11,698 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:11,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 23:55:11,699 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:11,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:11,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1270878113, now seen corresponding path program 1 times [2024-10-13 23:55:11,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:11,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321838389] [2024-10-13 23:55:11,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:11,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:12,530 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 325 proven. 37 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-13 23:55:12,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:12,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321838389] [2024-10-13 23:55:12,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321838389] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:55:12,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678096600] [2024-10-13 23:55:12,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:12,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:55:12,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:55:12,533 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) [2024-10-13 23:55:12,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 23:55:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:12,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 23:55:12,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:55:12,996 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 403 proven. 82 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-10-13 23:55:12,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 23:55:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 403 proven. 82 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-10-13 23:55:13,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678096600] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 23:55:13,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 23:55:13,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-10-13 23:55:13,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57737949] [2024-10-13 23:55:13,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 23:55:13,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 23:55:13,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:13,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 23:55:13,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-13 23:55:13,745 INFO L87 Difference]: Start difference. First operand 73346 states and 79790 transitions. Second operand has 9 states, 9 states have (on average 81.22222222222223) internal successors, (731), 9 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:23,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:23,847 INFO L93 Difference]: Finished difference Result 197394 states and 214293 transitions. [2024-10-13 23:55:23,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 23:55:23,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 81.22222222222223) internal successors, (731), 9 states have internal predecessors, (731), 0 states have call successors, (0), 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 418 [2024-10-13 23:55:23,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:23,996 INFO L225 Difference]: With dead ends: 197394 [2024-10-13 23:55:23,996 INFO L226 Difference]: Without dead ends: 122772 [2024-10-13 23:55:24,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 847 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2024-10-13 23:55:24,016 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 11414 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 12672 mSolverCounterSat, 1967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11414 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 14639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1967 IncrementalHoareTripleChecker+Valid, 12672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:24,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11414 Valid, 359 Invalid, 14639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1967 Valid, 12672 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2024-10-13 23:55:24,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122772 states. [2024-10-13 23:55:25,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122772 to 95457. [2024-10-13 23:55:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95457 states, 95456 states have (on average 1.0718655715722427) internal successors, (102316), 95456 states have internal predecessors, (102316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:25,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95457 states to 95457 states and 102316 transitions. [2024-10-13 23:55:25,423 INFO L78 Accepts]: Start accepts. Automaton has 95457 states and 102316 transitions. Word has length 418 [2024-10-13 23:55:25,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:25,423 INFO L471 AbstractCegarLoop]: Abstraction has 95457 states and 102316 transitions. [2024-10-13 23:55:25,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.22222222222223) internal successors, (731), 9 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:25,424 INFO L276 IsEmpty]: Start isEmpty. Operand 95457 states and 102316 transitions. [2024-10-13 23:55:25,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-10-13 23:55:25,440 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:25,440 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:25,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 23:55:25,640 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,SelfDestructingSolverStorable13 [2024-10-13 23:55:25,641 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:25,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:25,642 INFO L85 PathProgramCache]: Analyzing trace with hash -271111246, now seen corresponding path program 1 times [2024-10-13 23:55:25,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:25,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643966535] [2024-10-13 23:55:25,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:25,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-10-13 23:55:26,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:26,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643966535] [2024-10-13 23:55:26,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643966535] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:26,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:26,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:55:26,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742283872] [2024-10-13 23:55:26,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:26,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:55:26,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:26,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:55:26,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:26,111 INFO L87 Difference]: Start difference. First operand 95457 states and 102316 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:27,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:27,541 INFO L93 Difference]: Finished difference Result 188358 states and 201878 transitions. [2024-10-13 23:55:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:55:27,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 504 [2024-10-13 23:55:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:27,640 INFO L225 Difference]: With dead ends: 188358 [2024-10-13 23:55:27,640 INFO L226 Difference]: Without dead ends: 93752 [2024-10-13 23:55:27,693 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 [2024-10-13 23:55:27,694 INFO L432 NwaCegarLoop]: 627 mSDtfsCounter, 443 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:27,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 681 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-13 23:55:27,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93752 states. [2024-10-13 23:55:28,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93752 to 93323. [2024-10-13 23:55:28,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93323 states, 93322 states have (on average 1.0601037268811213) internal successors, (98931), 93322 states have internal predecessors, (98931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93323 states to 93323 states and 98931 transitions. [2024-10-13 23:55:28,973 INFO L78 Accepts]: Start accepts. Automaton has 93323 states and 98931 transitions. Word has length 504 [2024-10-13 23:55:28,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:28,974 INFO L471 AbstractCegarLoop]: Abstraction has 93323 states and 98931 transitions. [2024-10-13 23:55:28,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:28,974 INFO L276 IsEmpty]: Start isEmpty. Operand 93323 states and 98931 transitions. [2024-10-13 23:55:28,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2024-10-13 23:55:28,985 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:28,985 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:28,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 23:55:28,986 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:28,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:28,986 INFO L85 PathProgramCache]: Analyzing trace with hash 871771192, now seen corresponding path program 1 times [2024-10-13 23:55:28,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:28,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777206755] [2024-10-13 23:55:28,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:28,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:29,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2024-10-13 23:55:29,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:29,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777206755] [2024-10-13 23:55:29,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777206755] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:29,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:29,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 23:55:29,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407849383] [2024-10-13 23:55:29,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:29,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:55:29,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:29,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:55:29,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:55:29,964 INFO L87 Difference]: Start difference. First operand 93323 states and 98931 transitions. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:32,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:32,256 INFO L93 Difference]: Finished difference Result 204550 states and 216438 transitions. [2024-10-13 23:55:32,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:55:32,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 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 605 [2024-10-13 23:55:32,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:32,383 INFO L225 Difference]: With dead ends: 204550 [2024-10-13 23:55:32,383 INFO L226 Difference]: Without dead ends: 111228 [2024-10-13 23:55:32,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:55:32,598 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 822 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2488 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 2488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:32,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 163 Invalid, 2840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 2488 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-13 23:55:32,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111228 states. [2024-10-13 23:55:33,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111228 to 97154. [2024-10-13 23:55:33,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97154 states, 97153 states have (on average 1.0594217368480643) internal successors, (102926), 97153 states have internal predecessors, (102926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:33,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97154 states to 97154 states and 102926 transitions. [2024-10-13 23:55:33,861 INFO L78 Accepts]: Start accepts. Automaton has 97154 states and 102926 transitions. Word has length 605 [2024-10-13 23:55:33,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:33,862 INFO L471 AbstractCegarLoop]: Abstraction has 97154 states and 102926 transitions. [2024-10-13 23:55:33,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:33,862 INFO L276 IsEmpty]: Start isEmpty. Operand 97154 states and 102926 transitions. [2024-10-13 23:55:33,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2024-10-13 23:55:33,881 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:33,881 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:33,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 23:55:33,881 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:33,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:33,882 INFO L85 PathProgramCache]: Analyzing trace with hash -654563782, now seen corresponding path program 1 times [2024-10-13 23:55:33,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:33,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463017032] [2024-10-13 23:55:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:33,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:34,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 830 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2024-10-13 23:55:34,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:34,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463017032] [2024-10-13 23:55:34,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463017032] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:34,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:34,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:55:34,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514400011] [2024-10-13 23:55:34,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:34,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:55:34,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:34,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:55:34,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:34,417 INFO L87 Difference]: Start difference. First operand 97154 states and 102926 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:35,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:35,583 INFO L93 Difference]: Finished difference Result 187485 states and 198686 transitions. [2024-10-13 23:55:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:55:35,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 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 695 [2024-10-13 23:55:35,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:35,679 INFO L225 Difference]: With dead ends: 187485 [2024-10-13 23:55:35,679 INFO L226 Difference]: Without dead ends: 91181 [2024-10-13 23:55:35,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:35,708 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 579 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:35,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 81 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:55:35,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91181 states. [2024-10-13 23:55:36,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91181 to 91167. [2024-10-13 23:55:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91167 states, 91166 states have (on average 1.0592326086479609) internal successors, (96566), 91166 states have internal predecessors, (96566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:36,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91167 states to 91167 states and 96566 transitions. [2024-10-13 23:55:36,921 INFO L78 Accepts]: Start accepts. Automaton has 91167 states and 96566 transitions. Word has length 695 [2024-10-13 23:55:36,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:36,921 INFO L471 AbstractCegarLoop]: Abstraction has 91167 states and 96566 transitions. [2024-10-13 23:55:36,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:36,921 INFO L276 IsEmpty]: Start isEmpty. Operand 91167 states and 96566 transitions. [2024-10-13 23:55:36,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2024-10-13 23:55:36,937 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:36,937 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:36,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 23:55:36,938 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:36,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:36,938 INFO L85 PathProgramCache]: Analyzing trace with hash 352505976, now seen corresponding path program 1 times [2024-10-13 23:55:36,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:36,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316063774] [2024-10-13 23:55:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:36,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 939 proven. 0 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2024-10-13 23:55:37,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:37,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316063774] [2024-10-13 23:55:37,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316063774] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:37,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:37,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 23:55:37,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427595248] [2024-10-13 23:55:37,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:37,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:55:37,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:37,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:55:37,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:55:37,828 INFO L87 Difference]: Start difference. First operand 91167 states and 96566 transitions. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:39,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:39,873 INFO L93 Difference]: Finished difference Result 184038 states and 194933 transitions. [2024-10-13 23:55:39,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:55:39,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 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 695 [2024-10-13 23:55:39,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:39,975 INFO L225 Difference]: With dead ends: 184038 [2024-10-13 23:55:39,975 INFO L226 Difference]: Without dead ends: 93722 [2024-10-13 23:55:40,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:55:40,030 INFO L432 NwaCegarLoop]: 667 mSDtfsCounter, 687 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:40,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 752 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-13 23:55:40,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93722 states. [2024-10-13 23:55:41,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93722 to 93288. [2024-10-13 23:55:41,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93288 states, 93287 states have (on average 1.058261065314567) internal successors, (98722), 93287 states have internal predecessors, (98722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:41,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93288 states to 93288 states and 98722 transitions. [2024-10-13 23:55:41,295 INFO L78 Accepts]: Start accepts. Automaton has 93288 states and 98722 transitions. Word has length 695 [2024-10-13 23:55:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:41,296 INFO L471 AbstractCegarLoop]: Abstraction has 93288 states and 98722 transitions. [2024-10-13 23:55:41,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 93288 states and 98722 transitions. [2024-10-13 23:55:41,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2024-10-13 23:55:41,311 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:41,311 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:41,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 23:55:41,311 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:41,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:41,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1307632913, now seen corresponding path program 1 times [2024-10-13 23:55:41,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:41,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095835156] [2024-10-13 23:55:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:41,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 924 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-10-13 23:55:41,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:41,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095835156] [2024-10-13 23:55:41,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095835156] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:41,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:41,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:55:41,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323211030] [2024-10-13 23:55:41,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:41,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:55:41,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:41,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:55:41,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:41,839 INFO L87 Difference]: Start difference. First operand 93288 states and 98722 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:43,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:43,601 INFO L93 Difference]: Finished difference Result 198501 states and 210131 transitions. [2024-10-13 23:55:43,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:55:43,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 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 704 [2024-10-13 23:55:43,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:43,745 INFO L225 Difference]: With dead ends: 198501 [2024-10-13 23:55:43,745 INFO L226 Difference]: Without dead ends: 106064 [2024-10-13 23:55:43,814 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 [2024-10-13 23:55:43,815 INFO L432 NwaCegarLoop]: 669 mSDtfsCounter, 245 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:43,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 710 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-13 23:55:43,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106064 states. [2024-10-13 23:55:45,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106064 to 105198. [2024-10-13 23:55:45,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105198 states, 105197 states have (on average 1.0532714811258876) internal successors, (110801), 105197 states have internal predecessors, (110801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105198 states to 105198 states and 110801 transitions. [2024-10-13 23:55:45,256 INFO L78 Accepts]: Start accepts. Automaton has 105198 states and 110801 transitions. Word has length 704 [2024-10-13 23:55:45,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:45,257 INFO L471 AbstractCegarLoop]: Abstraction has 105198 states and 110801 transitions. [2024-10-13 23:55:45,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:45,257 INFO L276 IsEmpty]: Start isEmpty. Operand 105198 states and 110801 transitions. [2024-10-13 23:55:45,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2024-10-13 23:55:45,274 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:45,274 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:45,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 23:55:45,275 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:45,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:45,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2082416537, now seen corresponding path program 1 times [2024-10-13 23:55:45,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:45,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797488368] [2024-10-13 23:55:45,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:45,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 715 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2024-10-13 23:55:46,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:46,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797488368] [2024-10-13 23:55:46,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797488368] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:46,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:46,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:55:46,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41514573] [2024-10-13 23:55:46,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:46,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:55:46,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:46,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:55:46,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:46,050 INFO L87 Difference]: Start difference. First operand 105198 states and 110801 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:47,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:47,647 INFO L93 Difference]: Finished difference Result 209547 states and 220744 transitions. [2024-10-13 23:55:47,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:55:47,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 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 727 [2024-10-13 23:55:47,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:47,789 INFO L225 Difference]: With dead ends: 209547 [2024-10-13 23:55:47,789 INFO L226 Difference]: Without dead ends: 105200 [2024-10-13 23:55:47,855 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 [2024-10-13 23:55:47,855 INFO L432 NwaCegarLoop]: 711 mSDtfsCounter, 94 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:47,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 754 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-13 23:55:47,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105200 states. [2024-10-13 23:55:49,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105200 to 105198. [2024-10-13 23:55:49,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105198 states, 105197 states have (on average 1.053157409431828) internal successors, (110789), 105197 states have internal predecessors, (110789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:49,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105198 states to 105198 states and 110789 transitions. [2024-10-13 23:55:49,256 INFO L78 Accepts]: Start accepts. Automaton has 105198 states and 110789 transitions. Word has length 727 [2024-10-13 23:55:49,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:49,257 INFO L471 AbstractCegarLoop]: Abstraction has 105198 states and 110789 transitions. [2024-10-13 23:55:49,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:49,257 INFO L276 IsEmpty]: Start isEmpty. Operand 105198 states and 110789 transitions. [2024-10-13 23:55:49,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2024-10-13 23:55:49,272 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:49,273 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:49,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-13 23:55:49,273 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:49,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:49,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1473849535, now seen corresponding path program 1 times [2024-10-13 23:55:49,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:49,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345658460] [2024-10-13 23:55:49,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:49,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 1006 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2024-10-13 23:55:49,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:49,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345658460] [2024-10-13 23:55:49,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345658460] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:49,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:49,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:55:49,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754905835] [2024-10-13 23:55:49,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:49,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:55:49,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:49,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:55:49,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:55:49,975 INFO L87 Difference]: Start difference. First operand 105198 states and 110789 transitions. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:51,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:51,679 INFO L93 Difference]: Finished difference Result 218929 states and 230780 transitions. [2024-10-13 23:55:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:55:51,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 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 736 [2024-10-13 23:55:51,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:51,812 INFO L225 Difference]: With dead ends: 218929 [2024-10-13 23:55:51,812 INFO L226 Difference]: Without dead ends: 114582 [2024-10-13 23:55:51,860 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 [2024-10-13 23:55:51,860 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 289 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:51,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 193 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-13 23:55:51,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114582 states. [2024-10-13 23:55:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114582 to 111576. [2024-10-13 23:55:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111576 states, 111575 states have (on average 1.0530584808424825) internal successors, (117495), 111575 states have internal predecessors, (117495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111576 states to 111576 states and 117495 transitions. [2024-10-13 23:55:53,431 INFO L78 Accepts]: Start accepts. Automaton has 111576 states and 117495 transitions. Word has length 736 [2024-10-13 23:55:53,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:53,432 INFO L471 AbstractCegarLoop]: Abstraction has 111576 states and 117495 transitions. [2024-10-13 23:55:53,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:53,432 INFO L276 IsEmpty]: Start isEmpty. Operand 111576 states and 117495 transitions. [2024-10-13 23:55:53,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2024-10-13 23:55:53,455 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:55:53,455 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:55:53,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 23:55:53,455 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:55:53,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:55:53,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2119281650, now seen corresponding path program 1 times [2024-10-13 23:55:53,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:55:53,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139428862] [2024-10-13 23:55:53,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:55:53,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:55:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:55:54,319 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 521 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-13 23:55:54,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:55:54,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139428862] [2024-10-13 23:55:54,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139428862] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:55:54,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:55:54,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 23:55:54,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664559629] [2024-10-13 23:55:54,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:55:54,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:55:54,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:55:54,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:55:54,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:55:54,321 INFO L87 Difference]: Start difference. First operand 111576 states and 117495 transitions. Second operand has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:56,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:55:56,801 INFO L93 Difference]: Finished difference Result 238065 states and 250326 transitions. [2024-10-13 23:55:56,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:55:56,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 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 743 [2024-10-13 23:55:56,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:55:56,949 INFO L225 Difference]: With dead ends: 238065 [2024-10-13 23:55:56,950 INFO L226 Difference]: Without dead ends: 126490 [2024-10-13 23:55:57,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:55:57,012 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 722 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2351 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 2351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:55:57,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 108 Invalid, 2741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 2351 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-13 23:55:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126490 states. [2024-10-13 23:55:58,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126490 to 107316. [2024-10-13 23:55:58,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107316 states, 107315 states have (on average 1.0538601313889018) internal successors, (113095), 107315 states have internal predecessors, (113095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:58,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107316 states to 107316 states and 113095 transitions. [2024-10-13 23:55:58,381 INFO L78 Accepts]: Start accepts. Automaton has 107316 states and 113095 transitions. Word has length 743 [2024-10-13 23:55:58,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:55:58,381 INFO L471 AbstractCegarLoop]: Abstraction has 107316 states and 113095 transitions. [2024-10-13 23:55:58,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:55:58,381 INFO L276 IsEmpty]: Start isEmpty. Operand 107316 states and 113095 transitions.