./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/Problem03_label13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label13.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 67239f1bf7e0cdf325715bd48f4c9c86a0588f752ce48acb5db8e3f7bfd7cd18 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 20:20:04,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 20:20:04,827 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 20:20:04,832 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 20:20:04,832 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 20:20:04,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 20:20:04,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 20:20:04,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 20:20:04,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 20:20:04,860 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 20:20:04,862 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 20:20:04,863 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 20:20:04,863 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 20:20:04,864 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 20:20:04,864 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 20:20:04,864 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 20:20:04,864 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 20:20:04,864 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 20:20:04,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 20:20:04,865 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 20:20:04,865 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 20:20:04,867 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 20:20:04,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 20:20:04,868 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 20:20:04,868 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 20:20:04,868 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 20:20:04,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 20:20:04,868 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 20:20:04,869 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 20:20:04,869 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 20:20:04,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 20:20:04,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 20:20:04,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:20:04,870 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 20:20:04,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 20:20:04,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 20:20:04,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 20:20:04,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 20:20:04,871 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 20:20:04,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 20:20:04,871 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 20:20:04,873 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 20:20:04,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67239f1bf7e0cdf325715bd48f4c9c86a0588f752ce48acb5db8e3f7bfd7cd18 [2024-10-23 20:20:05,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 20:20:05,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 20:20:05,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 20:20:05,130 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 20:20:05,131 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 20:20:05,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label13.c [2024-10-23 20:20:06,387 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 20:20:06,687 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 20:20:06,692 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label13.c [2024-10-23 20:20:06,714 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/877fed7e0/651de4ed90174c8a9344209f98039a10/FLAGc7b39a021 [2024-10-23 20:20:06,728 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/877fed7e0/651de4ed90174c8a9344209f98039a10 [2024-10-23 20:20:06,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 20:20:06,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 20:20:06,734 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 20:20:06,734 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 20:20:06,741 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 20:20:06,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:20:06" (1/1) ... [2024-10-23 20:20:06,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c6f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:06, skipping insertion in model container [2024-10-23 20:20:06,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:20:06" (1/1) ... [2024-10-23 20:20:06,811 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 20:20:07,271 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/Problem03_label13.c[55139,55152] [2024-10-23 20:20:07,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:20:07,313 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 20:20:07,427 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/Problem03_label13.c[55139,55152] [2024-10-23 20:20:07,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:20:07,454 INFO L204 MainTranslator]: Completed translation [2024-10-23 20:20:07,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:07 WrapperNode [2024-10-23 20:20:07,455 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 20:20:07,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 20:20:07,456 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 20:20:07,456 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 20:20:07,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:07" (1/1) ... [2024-10-23 20:20:07,492 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:07" (1/1) ... [2024-10-23 20:20:07,557 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-10-23 20:20:07,557 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 20:20:07,558 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 20:20:07,558 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 20:20:07,558 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 20:20:07,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:07" (1/1) ... [2024-10-23 20:20:07,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:07" (1/1) ... [2024-10-23 20:20:07,576 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:07" (1/1) ... [2024-10-23 20:20:07,618 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]. [2024-10-23 20:20:07,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:07" (1/1) ... [2024-10-23 20:20:07,619 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:07" (1/1) ... [2024-10-23 20:20:07,657 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:07" (1/1) ... [2024-10-23 20:20:07,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:07" (1/1) ... [2024-10-23 20:20:07,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:07" (1/1) ... [2024-10-23 20:20:07,682 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:07" (1/1) ... [2024-10-23 20:20:07,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 20:20:07,697 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 20:20:07,697 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 20:20:07,697 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 20:20:07,698 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:07" (1/1) ... [2024-10-23 20:20:07,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:20:07,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:20:07,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 20:20:07,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 20:20:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 20:20:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 20:20:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 20:20:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 20:20:07,880 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 20:20:07,883 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 20:20:09,333 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-10-23 20:20:09,333 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 20:20:09,384 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 20:20:09,384 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 20:20:09,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:20:09 BoogieIcfgContainer [2024-10-23 20:20:09,387 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 20:20:09,388 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 20:20:09,388 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 20:20:09,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 20:20:09,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:20:06" (1/3) ... [2024-10-23 20:20:09,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a99823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:20:09, skipping insertion in model container [2024-10-23 20:20:09,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:07" (2/3) ... [2024-10-23 20:20:09,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a99823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:20:09, skipping insertion in model container [2024-10-23 20:20:09,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:20:09" (3/3) ... [2024-10-23 20:20:09,394 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label13.c [2024-10-23 20:20:09,407 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 20:20:09,407 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 20:20:09,461 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 20:20:09,468 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;@6f43cbe4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 20:20:09,468 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 20:20:09,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:09,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-10-23 20:20:09,486 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:09,487 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:20:09,487 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:09,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:09,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1621815591, now seen corresponding path program 1 times [2024-10-23 20:20:09,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:09,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198897015] [2024-10-23 20:20:09,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:09,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:20:09,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:09,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198897015] [2024-10-23 20:20:09,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198897015] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:09,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:20:09,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:20:09,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418387138] [2024-10-23 20:20:09,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:09,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 20:20:09,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:10,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 20:20:10,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 20:20:10,029 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 77.0) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:10,095 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2024-10-23 20:20:10,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 20:20:10,101 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2024-10-23 20:20:10,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:10,109 INFO L225 Difference]: With dead ends: 479 [2024-10-23 20:20:10,110 INFO L226 Difference]: Without dead ends: 238 [2024-10-23 20:20:10,116 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 [2024-10-23 20:20:10,120 INFO L432 NwaCegarLoop]: 392 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, 392 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 [2024-10-23 20:20:10,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 20:20:10,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-23 20:20:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-10-23 20:20:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:10,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2024-10-23 20:20:10,166 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 154 [2024-10-23 20:20:10,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:10,167 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2024-10-23 20:20:10,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2024-10-23 20:20:10,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-10-23 20:20:10,170 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:10,170 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:20:10,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 20:20:10,171 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:10,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:10,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1906010682, now seen corresponding path program 1 times [2024-10-23 20:20:10,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:10,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531239536] [2024-10-23 20:20:10,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:10,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:20:10,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:10,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531239536] [2024-10-23 20:20:10,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531239536] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:10,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:20:10,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:20:10,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87648381] [2024-10-23 20:20:10,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:10,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:20:10,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:10,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:20:10,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:10,705 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:11,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:11,448 INFO L93 Difference]: Finished difference Result 704 states and 1166 transitions. [2024-10-23 20:20:11,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:20:11,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2024-10-23 20:20:11,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:11,452 INFO L225 Difference]: With dead ends: 704 [2024-10-23 20:20:11,455 INFO L226 Difference]: Without dead ends: 467 [2024-10-23 20:20:11,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:11,458 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 90 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:11,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 129 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:20:11,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-10-23 20:20:11,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 453. [2024-10-23 20:20:11,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.6283185840707965) internal successors, (736), 452 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 736 transitions. [2024-10-23 20:20:11,489 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 736 transitions. Word has length 154 [2024-10-23 20:20:11,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:11,490 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 736 transitions. [2024-10-23 20:20:11,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:11,490 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 736 transitions. [2024-10-23 20:20:11,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-10-23 20:20:11,493 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:11,493 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 20:20:11,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 20:20:11,493 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:11,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1296982736, now seen corresponding path program 1 times [2024-10-23 20:20:11,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:11,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259225160] [2024-10-23 20:20:11,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:11,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:20:11,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:11,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259225160] [2024-10-23 20:20:11,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259225160] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:11,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:20:11,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:20:11,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47907129] [2024-10-23 20:20:11,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:11,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:20:11,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:11,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:20:11,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:11,747 INFO L87 Difference]: Start difference. First operand 453 states and 736 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:12,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:12,348 INFO L93 Difference]: Finished difference Result 1329 states and 2168 transitions. [2024-10-23 20:20:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:20:12,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2024-10-23 20:20:12,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:12,352 INFO L225 Difference]: With dead ends: 1329 [2024-10-23 20:20:12,352 INFO L226 Difference]: Without dead ends: 877 [2024-10-23 20:20:12,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:12,354 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 251 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:12,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 161 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:20:12,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2024-10-23 20:20:12,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 873. [2024-10-23 20:20:12,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.5229357798165137) internal successors, (1328), 872 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1328 transitions. [2024-10-23 20:20:12,383 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1328 transitions. Word has length 159 [2024-10-23 20:20:12,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:12,383 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1328 transitions. [2024-10-23 20:20:12,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:12,384 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1328 transitions. [2024-10-23 20:20:12,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-23 20:20:12,391 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:12,391 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:20:12,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 20:20:12,392 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:12,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:12,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1549499961, now seen corresponding path program 1 times [2024-10-23 20:20:12,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:12,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020929263] [2024-10-23 20:20:12,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:12,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:20:12,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:12,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020929263] [2024-10-23 20:20:12,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020929263] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:12,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:20:12,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:20:12,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142472544] [2024-10-23 20:20:12,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:12,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:20:12,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:12,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:20:12,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:12,597 INFO L87 Difference]: Start difference. First operand 873 states and 1328 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:13,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:13,504 INFO L93 Difference]: Finished difference Result 2574 states and 3934 transitions. [2024-10-23 20:20:13,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:20:13,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2024-10-23 20:20:13,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:13,510 INFO L225 Difference]: With dead ends: 2574 [2024-10-23 20:20:13,510 INFO L226 Difference]: Without dead ends: 1702 [2024-10-23 20:20:13,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:13,512 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:13,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 90 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 20:20:13,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2024-10-23 20:20:13,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1686. [2024-10-23 20:20:13,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1685 states have (on average 1.4985163204747773) internal successors, (2525), 1685 states have internal predecessors, (2525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:13,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2525 transitions. [2024-10-23 20:20:13,540 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2525 transitions. Word has length 162 [2024-10-23 20:20:13,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:13,540 INFO L471 AbstractCegarLoop]: Abstraction has 1686 states and 2525 transitions. [2024-10-23 20:20:13,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:13,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2525 transitions. [2024-10-23 20:20:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-23 20:20:13,544 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:13,544 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2024-10-23 20:20:13,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 20:20:13,544 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:13,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:13,545 INFO L85 PathProgramCache]: Analyzing trace with hash -382904337, now seen corresponding path program 1 times [2024-10-23 20:20:13,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:13,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955000808] [2024-10-23 20:20:13,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:13,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:13,829 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-23 20:20:13,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:13,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955000808] [2024-10-23 20:20:13,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955000808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:13,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:20:13,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:20:13,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477350531] [2024-10-23 20:20:13,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:13,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:20:13,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:13,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:20:13,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:13,831 INFO L87 Difference]: Start difference. First operand 1686 states and 2525 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:14,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:14,577 INFO L93 Difference]: Finished difference Result 4193 states and 6259 transitions. [2024-10-23 20:20:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:20:14,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 171 [2024-10-23 20:20:14,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:14,585 INFO L225 Difference]: With dead ends: 4193 [2024-10-23 20:20:14,585 INFO L226 Difference]: Without dead ends: 2508 [2024-10-23 20:20:14,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:14,588 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 234 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:14,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 113 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:20:14,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2024-10-23 20:20:14,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2507. [2024-10-23 20:20:14,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.465682362330407) internal successors, (3673), 2506 states have internal predecessors, (3673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:14,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3673 transitions. [2024-10-23 20:20:14,629 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3673 transitions. Word has length 171 [2024-10-23 20:20:14,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:14,630 INFO L471 AbstractCegarLoop]: Abstraction has 2507 states and 3673 transitions. [2024-10-23 20:20:14,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:14,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3673 transitions. [2024-10-23 20:20:14,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-23 20:20:14,634 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:14,634 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 20:20:14,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 20:20:14,635 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:14,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:14,635 INFO L85 PathProgramCache]: Analyzing trace with hash -984731181, now seen corresponding path program 1 times [2024-10-23 20:20:14,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:14,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102750845] [2024-10-23 20:20:14,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:14,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:20:14,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:14,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102750845] [2024-10-23 20:20:14,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102750845] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:14,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:20:14,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:20:14,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227676989] [2024-10-23 20:20:14,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:14,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:20:14,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:14,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:20:14,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:14,948 INFO L87 Difference]: Start difference. First operand 2507 states and 3673 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:15,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:15,687 INFO L93 Difference]: Finished difference Result 6242 states and 9107 transitions. [2024-10-23 20:20:15,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:20:15,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2024-10-23 20:20:15,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:15,707 INFO L225 Difference]: With dead ends: 6242 [2024-10-23 20:20:15,707 INFO L226 Difference]: Without dead ends: 3736 [2024-10-23 20:20:15,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:15,711 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 208 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:15,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 153 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:20:15,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2024-10-23 20:20:15,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3725. [2024-10-23 20:20:15,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3725 states, 3724 states have (on average 1.4113856068743287) internal successors, (5256), 3724 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3725 states to 3725 states and 5256 transitions. [2024-10-23 20:20:15,811 INFO L78 Accepts]: Start accepts. Automaton has 3725 states and 5256 transitions. Word has length 173 [2024-10-23 20:20:15,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:15,815 INFO L471 AbstractCegarLoop]: Abstraction has 3725 states and 5256 transitions. [2024-10-23 20:20:15,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:15,816 INFO L276 IsEmpty]: Start isEmpty. Operand 3725 states and 5256 transitions. [2024-10-23 20:20:15,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-10-23 20:20:15,825 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:15,825 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2024-10-23 20:20:15,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 20:20:15,826 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:15,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:15,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1262545728, now seen corresponding path program 1 times [2024-10-23 20:20:15,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:15,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094060679] [2024-10-23 20:20:15,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:15,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:20:16,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:16,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094060679] [2024-10-23 20:20:16,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094060679] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:16,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:20:16,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:20:16,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850272695] [2024-10-23 20:20:16,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:16,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:20:16,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:16,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:20:16,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:16,075 INFO L87 Difference]: Start difference. First operand 3725 states and 5256 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:16,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:16,787 INFO L93 Difference]: Finished difference Result 10903 states and 15406 transitions. [2024-10-23 20:20:16,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:20:16,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 174 [2024-10-23 20:20:16,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:16,805 INFO L225 Difference]: With dead ends: 10903 [2024-10-23 20:20:16,805 INFO L226 Difference]: Without dead ends: 7179 [2024-10-23 20:20:16,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:16,811 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 225 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:16,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 426 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:20:16,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7179 states. [2024-10-23 20:20:16,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7179 to 6162. [2024-10-23 20:20:16,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6162 states, 6161 states have (on average 1.2949196559000162) internal successors, (7978), 6161 states have internal predecessors, (7978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6162 states to 6162 states and 7978 transitions. [2024-10-23 20:20:16,892 INFO L78 Accepts]: Start accepts. Automaton has 6162 states and 7978 transitions. Word has length 174 [2024-10-23 20:20:16,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:16,892 INFO L471 AbstractCegarLoop]: Abstraction has 6162 states and 7978 transitions. [2024-10-23 20:20:16,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:16,892 INFO L276 IsEmpty]: Start isEmpty. Operand 6162 states and 7978 transitions. [2024-10-23 20:20:16,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-10-23 20:20:16,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:16,898 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:20:16,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 20:20:16,898 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:16,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:16,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1443329636, now seen corresponding path program 1 times [2024-10-23 20:20:16,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:16,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850100250] [2024-10-23 20:20:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:16,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:20:17,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:17,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850100250] [2024-10-23 20:20:17,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850100250] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:20:17,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311372020] [2024-10-23 20:20:17,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:17,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:20:17,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:20:17,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:20:17,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 20:20:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:17,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:20:17,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:20:17,689 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-23 20:20:17,690 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:20:17,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311372020] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:17,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:20:17,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-23 20:20:17,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780278645] [2024-10-23 20:20:17,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:17,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:20:17,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:17,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:20:17,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:20:17,692 INFO L87 Difference]: Start difference. First operand 6162 states and 7978 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:18,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:18,319 INFO L93 Difference]: Finished difference Result 17011 states and 22107 transitions. [2024-10-23 20:20:18,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:20:18,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2024-10-23 20:20:18,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:18,345 INFO L225 Difference]: With dead ends: 17011 [2024-10-23 20:20:18,345 INFO L226 Difference]: Without dead ends: 10850 [2024-10-23 20:20:18,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:20:18,353 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 106 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:18,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 165 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:20:18,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10850 states. [2024-10-23 20:20:18,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10850 to 10646. [2024-10-23 20:20:18,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10646 states, 10645 states have (on average 1.262940347581024) internal successors, (13444), 10645 states have internal predecessors, (13444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:18,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10646 states to 10646 states and 13444 transitions. [2024-10-23 20:20:18,573 INFO L78 Accepts]: Start accepts. Automaton has 10646 states and 13444 transitions. Word has length 180 [2024-10-23 20:20:18,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:18,574 INFO L471 AbstractCegarLoop]: Abstraction has 10646 states and 13444 transitions. [2024-10-23 20:20:18,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:18,574 INFO L276 IsEmpty]: Start isEmpty. Operand 10646 states and 13444 transitions. [2024-10-23 20:20:18,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-10-23 20:20:18,587 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:18,587 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:20:18,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 20:20:18,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:20:18,792 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:18,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:18,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1073472958, now seen corresponding path program 1 times [2024-10-23 20:20:18,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:18,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286267076] [2024-10-23 20:20:18,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:18,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:20:19,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:19,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286267076] [2024-10-23 20:20:19,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286267076] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:20:19,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065554627] [2024-10-23 20:20:19,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:19,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:20:19,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:20:19,082 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:20:19,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 20:20:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:19,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 20:20:19,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:20:19,467 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:20:19,467 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:20:19,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065554627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:19,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:20:19,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:20:19,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893967375] [2024-10-23 20:20:19,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:19,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:20:19,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:19,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:20:19,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:20:19,469 INFO L87 Difference]: Start difference. First operand 10646 states and 13444 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:20,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:20,212 INFO L93 Difference]: Finished difference Result 29227 states and 37032 transitions. [2024-10-23 20:20:20,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:20:20,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 [2024-10-23 20:20:20,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:20,245 INFO L225 Difference]: With dead ends: 29227 [2024-10-23 20:20:20,245 INFO L226 Difference]: Without dead ends: 18582 [2024-10-23 20:20:20,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:20:20,258 INFO L432 NwaCegarLoop]: 367 mSDtfsCounter, 97 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:20,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 396 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:20:20,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18582 states. [2024-10-23 20:20:20,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18582 to 18573. [2024-10-23 20:20:20,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18573 states, 18572 states have (on average 1.234815851819944) internal successors, (22933), 18572 states have internal predecessors, (22933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:20,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18573 states to 18573 states and 22933 transitions. [2024-10-23 20:20:20,447 INFO L78 Accepts]: Start accepts. Automaton has 18573 states and 22933 transitions. Word has length 192 [2024-10-23 20:20:20,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:20,447 INFO L471 AbstractCegarLoop]: Abstraction has 18573 states and 22933 transitions. [2024-10-23 20:20:20,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:20,448 INFO L276 IsEmpty]: Start isEmpty. Operand 18573 states and 22933 transitions. [2024-10-23 20:20:20,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-10-23 20:20:20,463 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:20,463 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:20:20,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-23 20:20:20,667 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,SelfDestructingSolverStorable8 [2024-10-23 20:20:20,668 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:20,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash -836902253, now seen corresponding path program 1 times [2024-10-23 20:20:20,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:20,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892147850] [2024-10-23 20:20:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:20,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-23 20:20:20,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:20,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892147850] [2024-10-23 20:20:20,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892147850] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:20,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:20:20,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:20:20,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405147583] [2024-10-23 20:20:20,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:20,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:20:20,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:20,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:20:20,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:20,870 INFO L87 Difference]: Start difference. First operand 18573 states and 22933 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:21,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:21,556 INFO L93 Difference]: Finished difference Result 44862 states and 56273 transitions. [2024-10-23 20:20:21,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:20:21,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 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 205 [2024-10-23 20:20:21,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:21,586 INFO L225 Difference]: With dead ends: 44862 [2024-10-23 20:20:21,587 INFO L226 Difference]: Without dead ends: 26493 [2024-10-23 20:20:21,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:21,605 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 200 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:21,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 169 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:20:21,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26493 states. [2024-10-23 20:20:21,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26493 to 26490. [2024-10-23 20:20:21,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26490 states, 26489 states have (on average 1.192872513118653) internal successors, (31598), 26489 states have internal predecessors, (31598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:22,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26490 states to 26490 states and 31598 transitions. [2024-10-23 20:20:22,003 INFO L78 Accepts]: Start accepts. Automaton has 26490 states and 31598 transitions. Word has length 205 [2024-10-23 20:20:22,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:22,003 INFO L471 AbstractCegarLoop]: Abstraction has 26490 states and 31598 transitions. [2024-10-23 20:20:22,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:22,004 INFO L276 IsEmpty]: Start isEmpty. Operand 26490 states and 31598 transitions. [2024-10-23 20:20:22,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-10-23 20:20:22,027 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:22,027 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:20:22,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 20:20:22,028 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:22,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:22,028 INFO L85 PathProgramCache]: Analyzing trace with hash 792752843, now seen corresponding path program 1 times [2024-10-23 20:20:22,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:22,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929020678] [2024-10-23 20:20:22,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:22,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 81 proven. 6 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-23 20:20:22,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:22,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929020678] [2024-10-23 20:20:22,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929020678] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:20:22,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944536206] [2024-10-23 20:20:22,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:22,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:20:22,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:20:22,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:20:22,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 20:20:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:22,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:20:22,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:20:22,523 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-23 20:20:22,523 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:20:22,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944536206] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:22,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:20:22,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:20:22,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7374000] [2024-10-23 20:20:22,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:22,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:20:22,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:22,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:20:22,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:20:22,525 INFO L87 Difference]: Start difference. First operand 26490 states and 31598 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:23,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:23,342 INFO L93 Difference]: Finished difference Result 52779 states and 62981 transitions. [2024-10-23 20:20:23,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:20:23,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 225 [2024-10-23 20:20:23,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:23,383 INFO L225 Difference]: With dead ends: 52779 [2024-10-23 20:20:23,383 INFO L226 Difference]: Without dead ends: 26493 [2024-10-23 20:20:23,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:20:23,405 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 259 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:23,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 339 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:20:23,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26493 states. [2024-10-23 20:20:23,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26493 to 26084. [2024-10-23 20:20:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26084 states, 26083 states have (on average 1.1778553080550551) internal successors, (30722), 26083 states have internal predecessors, (30722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:23,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26084 states to 26084 states and 30722 transitions. [2024-10-23 20:20:23,707 INFO L78 Accepts]: Start accepts. Automaton has 26084 states and 30722 transitions. Word has length 225 [2024-10-23 20:20:23,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:23,707 INFO L471 AbstractCegarLoop]: Abstraction has 26084 states and 30722 transitions. [2024-10-23 20:20:23,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:23,707 INFO L276 IsEmpty]: Start isEmpty. Operand 26084 states and 30722 transitions. [2024-10-23 20:20:23,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-10-23 20:20:23,728 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:23,729 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:20:23,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 20:20:23,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:20:23,930 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:23,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:23,931 INFO L85 PathProgramCache]: Analyzing trace with hash 646704377, now seen corresponding path program 1 times [2024-10-23 20:20:23,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:23,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579613170] [2024-10-23 20:20:23,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:23,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 86 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-23 20:20:24,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:24,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579613170] [2024-10-23 20:20:24,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579613170] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:20:24,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452243595] [2024-10-23 20:20:24,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:24,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:20:24,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:20:24,268 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:20:24,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 20:20:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:24,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:20:24,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:20:24,595 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-23 20:20:24,596 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:20:24,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452243595] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:24,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:20:24,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:20:24,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408002807] [2024-10-23 20:20:24,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:24,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:20:24,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:24,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:20:24,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:20:24,601 INFO L87 Difference]: Start difference. First operand 26084 states and 30722 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:25,223 INFO L93 Difference]: Finished difference Result 51967 states and 61229 transitions. [2024-10-23 20:20:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:20:25,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 231 [2024-10-23 20:20:25,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:25,253 INFO L225 Difference]: With dead ends: 51967 [2024-10-23 20:20:25,254 INFO L226 Difference]: Without dead ends: 26087 [2024-10-23 20:20:25,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:20:25,273 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 122 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:25,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 98 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 20:20:25,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26087 states. [2024-10-23 20:20:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26087 to 26084. [2024-10-23 20:20:25,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26084 states, 26083 states have (on average 1.173407966874976) internal successors, (30606), 26083 states have internal predecessors, (30606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:25,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26084 states to 26084 states and 30606 transitions. [2024-10-23 20:20:25,728 INFO L78 Accepts]: Start accepts. Automaton has 26084 states and 30606 transitions. Word has length 231 [2024-10-23 20:20:25,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:25,728 INFO L471 AbstractCegarLoop]: Abstraction has 26084 states and 30606 transitions. [2024-10-23 20:20:25,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:25,729 INFO L276 IsEmpty]: Start isEmpty. Operand 26084 states and 30606 transitions. [2024-10-23 20:20:25,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-10-23 20:20:25,747 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:25,748 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 20:20:25,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-23 20:20:25,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:20:25,952 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:25,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:25,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2134478254, now seen corresponding path program 1 times [2024-10-23 20:20:25,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:25,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185137222] [2024-10-23 20:20:25,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:25,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-23 20:20:26,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:26,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185137222] [2024-10-23 20:20:26,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185137222] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:20:26,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161660010] [2024-10-23 20:20:26,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:26,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:20:26,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:20:26,231 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:20:26,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 20:20:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:26,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 20:20:26,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:20:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-23 20:20:26,598 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:20:26,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161660010] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:26,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:20:26,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:20:26,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788352697] [2024-10-23 20:20:26,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:26,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:20:26,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:20:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:20:26,601 INFO L87 Difference]: Start difference. First operand 26084 states and 30606 transitions. Second operand has 4 states, 4 states have (on average 48.75) 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) [2024-10-23 20:20:27,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:27,780 INFO L93 Difference]: Finished difference Result 75814 states and 89255 transitions. [2024-10-23 20:20:27,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:20:27,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) 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 265 [2024-10-23 20:20:27,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:27,844 INFO L225 Difference]: With dead ends: 75814 [2024-10-23 20:20:27,844 INFO L226 Difference]: Without dead ends: 49934 [2024-10-23 20:20:27,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:20:27,876 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 538 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:27,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 565 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 20:20:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49934 states. [2024-10-23 20:20:28,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49934 to 49908. [2024-10-23 20:20:28,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49908 states, 49907 states have (on average 1.1731220069328951) internal successors, (58547), 49907 states have internal predecessors, (58547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:28,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49908 states to 49908 states and 58547 transitions. [2024-10-23 20:20:28,665 INFO L78 Accepts]: Start accepts. Automaton has 49908 states and 58547 transitions. Word has length 265 [2024-10-23 20:20:28,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:28,666 INFO L471 AbstractCegarLoop]: Abstraction has 49908 states and 58547 transitions. [2024-10-23 20:20:28,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) 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) [2024-10-23 20:20:28,666 INFO L276 IsEmpty]: Start isEmpty. Operand 49908 states and 58547 transitions. [2024-10-23 20:20:28,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-10-23 20:20:28,692 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:28,692 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 20:20:28,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-23 20:20:28,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-23 20:20:28,897 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:28,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:28,898 INFO L85 PathProgramCache]: Analyzing trace with hash 882364818, now seen corresponding path program 1 times [2024-10-23 20:20:28,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:28,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497159681] [2024-10-23 20:20:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:28,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:29,363 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 94 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-23 20:20:29,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:29,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497159681] [2024-10-23 20:20:29,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497159681] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:20:29,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651984540] [2024-10-23 20:20:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:29,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:20:29,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:20:29,365 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:20:29,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 20:20:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:29,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 20:20:29,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:20:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-23 20:20:29,680 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:20:29,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651984540] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:29,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:20:29,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:20:29,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082467569] [2024-10-23 20:20:29,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:29,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:20:29,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:29,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:20:29,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:20:29,681 INFO L87 Difference]: Start difference. First operand 49908 states and 58547 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:30,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:30,672 INFO L93 Difference]: Finished difference Result 111192 states and 129602 transitions. [2024-10-23 20:20:30,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:20:30,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 [2024-10-23 20:20:30,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:30,740 INFO L225 Difference]: With dead ends: 111192 [2024-10-23 20:20:30,741 INFO L226 Difference]: Without dead ends: 61488 [2024-10-23 20:20:30,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:20:30,776 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 588 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:30,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 183 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:20:30,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61488 states. [2024-10-23 20:20:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61488 to 55186. [2024-10-23 20:20:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55186 states, 55185 states have (on average 1.1596448310229228) internal successors, (63995), 55185 states have internal predecessors, (63995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:31,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55186 states to 55186 states and 63995 transitions. [2024-10-23 20:20:31,609 INFO L78 Accepts]: Start accepts. Automaton has 55186 states and 63995 transitions. Word has length 275 [2024-10-23 20:20:31,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:31,609 INFO L471 AbstractCegarLoop]: Abstraction has 55186 states and 63995 transitions. [2024-10-23 20:20:31,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:31,609 INFO L276 IsEmpty]: Start isEmpty. Operand 55186 states and 63995 transitions. [2024-10-23 20:20:31,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-10-23 20:20:31,635 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:31,635 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 20:20:31,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-23 20:20:31,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:20:31,836 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:31,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:31,836 INFO L85 PathProgramCache]: Analyzing trace with hash 716772142, now seen corresponding path program 1 times [2024-10-23 20:20:31,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:31,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242913952] [2024-10-23 20:20:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:31,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 132 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-23 20:20:32,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:32,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242913952] [2024-10-23 20:20:32,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242913952] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:20:32,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144471544] [2024-10-23 20:20:32,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:32,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:20:32,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:20:32,461 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:20:32,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 20:20:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:32,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 20:20:32,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:20:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-23 20:20:32,740 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:20:32,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144471544] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:32,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:20:32,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-10-23 20:20:32,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552233357] [2024-10-23 20:20:32,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:32,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:20:32,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:32,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:20:32,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:20:32,742 INFO L87 Difference]: Start difference. First operand 55186 states and 63995 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:33,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:33,772 INFO L93 Difference]: Finished difference Result 127033 states and 147904 transitions. [2024-10-23 20:20:33,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:20:33,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 294 [2024-10-23 20:20:33,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:33,858 INFO L225 Difference]: With dead ends: 127033 [2024-10-23 20:20:33,858 INFO L226 Difference]: Without dead ends: 72051 [2024-10-23 20:20:33,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:20:33,906 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 155 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:33,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 204 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:20:33,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72051 states. [2024-10-23 20:20:34,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72051 to 70017. [2024-10-23 20:20:34,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70017 states, 70016 states have (on average 1.1519509826325411) internal successors, (80655), 70016 states have internal predecessors, (80655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70017 states to 70017 states and 80655 transitions. [2024-10-23 20:20:34,704 INFO L78 Accepts]: Start accepts. Automaton has 70017 states and 80655 transitions. Word has length 294 [2024-10-23 20:20:34,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:34,704 INFO L471 AbstractCegarLoop]: Abstraction has 70017 states and 80655 transitions. [2024-10-23 20:20:34,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:34,705 INFO L276 IsEmpty]: Start isEmpty. Operand 70017 states and 80655 transitions. [2024-10-23 20:20:34,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-10-23 20:20:34,734 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:34,734 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 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] [2024-10-23 20:20:34,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-23 20:20:34,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:20:34,935 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:34,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:34,936 INFO L85 PathProgramCache]: Analyzing trace with hash 67503980, now seen corresponding path program 1 times [2024-10-23 20:20:34,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:34,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057519535] [2024-10-23 20:20:34,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:34,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:35,307 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-10-23 20:20:35,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:35,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057519535] [2024-10-23 20:20:35,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057519535] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:35,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:20:35,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:20:35,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518658988] [2024-10-23 20:20:35,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:35,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:20:35,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:35,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:20:35,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:35,308 INFO L87 Difference]: Start difference. First operand 70017 states and 80655 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:36,312 INFO L93 Difference]: Finished difference Result 140471 states and 161884 transitions. [2024-10-23 20:20:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:20:36,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 297 [2024-10-23 20:20:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:36,427 INFO L225 Difference]: With dead ends: 140471 [2024-10-23 20:20:36,428 INFO L226 Difference]: Without dead ends: 70658 [2024-10-23 20:20:36,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:36,478 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 173 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:36,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 381 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:20:36,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70658 states. [2024-10-23 20:20:37,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70658 to 66972. [2024-10-23 20:20:37,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66972 states, 66971 states have (on average 1.141837511758821) internal successors, (76470), 66971 states have internal predecessors, (76470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66972 states to 66972 states and 76470 transitions. [2024-10-23 20:20:37,821 INFO L78 Accepts]: Start accepts. Automaton has 66972 states and 76470 transitions. Word has length 297 [2024-10-23 20:20:37,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:37,821 INFO L471 AbstractCegarLoop]: Abstraction has 66972 states and 76470 transitions. [2024-10-23 20:20:37,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:37,822 INFO L276 IsEmpty]: Start isEmpty. Operand 66972 states and 76470 transitions. [2024-10-23 20:20:37,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-10-23 20:20:37,848 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:37,848 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:20:37,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 20:20:37,848 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:37,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:37,849 INFO L85 PathProgramCache]: Analyzing trace with hash 237579195, now seen corresponding path program 1 times [2024-10-23 20:20:37,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:37,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957278334] [2024-10-23 20:20:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:37,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:38,127 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-10-23 20:20:38,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:38,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957278334] [2024-10-23 20:20:38,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957278334] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:38,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:20:38,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:20:38,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883839163] [2024-10-23 20:20:38,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:38,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:20:38,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:38,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:20:38,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:20:38,129 INFO L87 Difference]: Start difference. First operand 66972 states and 76470 transitions. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:39,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:39,431 INFO L93 Difference]: Finished difference Result 201631 states and 230049 transitions. [2024-10-23 20:20:39,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:20:39,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 299 [2024-10-23 20:20:39,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:39,588 INFO L225 Difference]: With dead ends: 201631 [2024-10-23 20:20:39,588 INFO L226 Difference]: Without dead ends: 134863 [2024-10-23 20:20:39,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:20:39,648 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 782 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:39,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 407 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:20:39,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134863 states. [2024-10-23 20:20:41,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134863 to 129168. [2024-10-23 20:20:41,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129168 states, 129167 states have (on average 1.1378293217307827) internal successors, (146970), 129167 states have internal predecessors, (146970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:42,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129168 states to 129168 states and 146970 transitions. [2024-10-23 20:20:42,065 INFO L78 Accepts]: Start accepts. Automaton has 129168 states and 146970 transitions. Word has length 299 [2024-10-23 20:20:42,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:42,066 INFO L471 AbstractCegarLoop]: Abstraction has 129168 states and 146970 transitions. [2024-10-23 20:20:42,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:42,066 INFO L276 IsEmpty]: Start isEmpty. Operand 129168 states and 146970 transitions. [2024-10-23 20:20:42,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-10-23 20:20:42,094 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:42,094 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:20:42,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 20:20:42,094 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:42,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:42,095 INFO L85 PathProgramCache]: Analyzing trace with hash 891692268, now seen corresponding path program 1 times [2024-10-23 20:20:42,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:42,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704120269] [2024-10-23 20:20:42,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:42,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 102 proven. 6 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-23 20:20:42,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:42,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704120269] [2024-10-23 20:20:42,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704120269] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:20:42,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53075169] [2024-10-23 20:20:42,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:42,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:20:42,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:20:42,361 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:20:42,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-23 20:20:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:42,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 20:20:42,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:20:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-23 20:20:42,861 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:20:42,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53075169] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:42,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:20:42,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:20:42,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800768699] [2024-10-23 20:20:42,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:42,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:20:42,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:42,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:20:42,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:20:42,863 INFO L87 Difference]: Start difference. First operand 129168 states and 146970 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:44,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:44,660 INFO L93 Difference]: Finished difference Result 394962 states and 448929 transitions. [2024-10-23 20:20:44,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:20:44,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 303 [2024-10-23 20:20:44,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:44,996 INFO L225 Difference]: With dead ends: 394962 [2024-10-23 20:20:44,996 INFO L226 Difference]: Without dead ends: 265998 [2024-10-23 20:20:45,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:20:45,083 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 545 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:45,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 410 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:20:45,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265998 states. [2024-10-23 20:20:48,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265998 to 254013. [2024-10-23 20:20:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254013 states, 254012 states have (on average 1.1341353951781805) internal successors, (288084), 254012 states have internal predecessors, (288084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254013 states to 254013 states and 288084 transitions. [2024-10-23 20:20:49,324 INFO L78 Accepts]: Start accepts. Automaton has 254013 states and 288084 transitions. Word has length 303 [2024-10-23 20:20:49,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:49,324 INFO L471 AbstractCegarLoop]: Abstraction has 254013 states and 288084 transitions. [2024-10-23 20:20:49,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:49,325 INFO L276 IsEmpty]: Start isEmpty. Operand 254013 states and 288084 transitions. [2024-10-23 20:20:49,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-10-23 20:20:49,397 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:49,397 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:20:49,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-23 20:20:49,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-23 20:20:49,599 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:49,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:49,599 INFO L85 PathProgramCache]: Analyzing trace with hash -86292425, now seen corresponding path program 1 times [2024-10-23 20:20:49,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:49,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533653338] [2024-10-23 20:20:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:49,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-23 20:20:50,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:50,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533653338] [2024-10-23 20:20:50,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533653338] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:50,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:20:50,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:20:50,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588724791] [2024-10-23 20:20:50,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:50,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:20:50,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:50,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:20:50,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:50,684 INFO L87 Difference]: Start difference. First operand 254013 states and 288084 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:53,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:20:53,002 INFO L93 Difference]: Finished difference Result 507076 states and 575551 transitions. [2024-10-23 20:20:53,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:20:53,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 342 [2024-10-23 20:20:53,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:20:53,388 INFO L225 Difference]: With dead ends: 507076 [2024-10-23 20:20:53,388 INFO L226 Difference]: Without dead ends: 253267 [2024-10-23 20:20:53,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:20:53,536 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 181 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:20:53,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 420 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:20:53,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253267 states. [2024-10-23 20:20:56,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253267 to 241478. [2024-10-23 20:20:57,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241478 states, 241477 states have (on average 1.1162181077286863) internal successors, (269541), 241477 states have internal predecessors, (269541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:57,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241478 states to 241478 states and 269541 transitions. [2024-10-23 20:20:57,502 INFO L78 Accepts]: Start accepts. Automaton has 241478 states and 269541 transitions. Word has length 342 [2024-10-23 20:20:57,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:20:57,503 INFO L471 AbstractCegarLoop]: Abstraction has 241478 states and 269541 transitions. [2024-10-23 20:20:57,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:20:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 241478 states and 269541 transitions. [2024-10-23 20:20:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-10-23 20:20:57,589 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:20:57,589 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 20:20:57,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-23 20:20:57,590 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:20:57,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:20:57,590 INFO L85 PathProgramCache]: Analyzing trace with hash -827094412, now seen corresponding path program 1 times [2024-10-23 20:20:57,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:20:57,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244878826] [2024-10-23 20:20:57,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:20:57,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:20:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:20:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-23 20:20:58,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:20:58,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244878826] [2024-10-23 20:20:58,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244878826] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:20:58,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:20:58,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:20:58,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300713817] [2024-10-23 20:20:58,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:20:58,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:20:58,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:20:58,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:20:58,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:20:58,501 INFO L87 Difference]: Start difference. First operand 241478 states and 269541 transitions. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:00,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:00,506 INFO L93 Difference]: Finished difference Result 406615 states and 452984 transitions. [2024-10-23 20:21:00,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:21:00,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 347 [2024-10-23 20:21:00,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:00,740 INFO L225 Difference]: With dead ends: 406615 [2024-10-23 20:21:00,740 INFO L226 Difference]: Without dead ends: 165544 [2024-10-23 20:21:00,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:21:00,879 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 810 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:00,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 49 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 20:21:01,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165544 states. [2024-10-23 20:21:02,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165544 to 133394. [2024-10-23 20:21:03,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133394 states, 133393 states have (on average 1.1058151477213947) internal successors, (147508), 133393 states have internal predecessors, (147508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133394 states to 133394 states and 147508 transitions. [2024-10-23 20:21:03,251 INFO L78 Accepts]: Start accepts. Automaton has 133394 states and 147508 transitions. Word has length 347 [2024-10-23 20:21:03,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:03,251 INFO L471 AbstractCegarLoop]: Abstraction has 133394 states and 147508 transitions. [2024-10-23 20:21:03,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:03,252 INFO L276 IsEmpty]: Start isEmpty. Operand 133394 states and 147508 transitions. [2024-10-23 20:21:03,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-10-23 20:21:03,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:03,283 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:21:03,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-23 20:21:03,284 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:03,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:03,285 INFO L85 PathProgramCache]: Analyzing trace with hash 362005973, now seen corresponding path program 1 times [2024-10-23 20:21:03,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:03,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892278729] [2024-10-23 20:21:03,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:03,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 192 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:05,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:05,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892278729] [2024-10-23 20:21:05,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892278729] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:21:05,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440183455] [2024-10-23 20:21:05,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:05,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:21:05,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:21:05,137 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:21:05,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-23 20:21:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:05,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 20:21:05,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:21:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:05,614 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:21:05,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440183455] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:05,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:21:05,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 20:21:05,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342588155] [2024-10-23 20:21:05,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:05,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:05,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:05,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:05,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 20:21:05,620 INFO L87 Difference]: Start difference. First operand 133394 states and 147508 transitions. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:06,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:06,857 INFO L93 Difference]: Finished difference Result 261307 states and 288956 transitions. [2024-10-23 20:21:06,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:06,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 347 [2024-10-23 20:21:06,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:07,010 INFO L225 Difference]: With dead ends: 261307 [2024-10-23 20:21:07,011 INFO L226 Difference]: Without dead ends: 128320 [2024-10-23 20:21:07,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 20:21:07,093 INFO L432 NwaCegarLoop]: 297 mSDtfsCounter, 163 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:07,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 311 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:21:07,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128320 states. [2024-10-23 20:21:09,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128320 to 128312. [2024-10-23 20:21:09,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128312 states, 128311 states have (on average 1.0917068684680191) internal successors, (140078), 128311 states have internal predecessors, (140078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)