./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label32.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label32.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 758b6bdd5f0153469513ef6931f2486fab3d5fd3aa9f01cac0e5fdb67f3e5b48 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:53:05,359 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:53:05,448 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:53:05,466 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:53:05,467 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:53:05,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:53:05,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:53:05,501 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:53:05,501 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:53:05,505 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:53:05,505 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:53:05,505 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:53:05,506 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:53:05,506 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:53:05,506 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:53:05,507 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:53:05,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:53:05,507 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:53:05,507 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:53:05,509 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:53:05,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:53:05,510 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:53:05,510 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:53:05,510 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:53:05,511 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:53:05,511 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:53:05,511 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:53:05,511 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:53:05,512 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:53:05,512 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:53:05,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:53:05,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:53:05,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:53:05,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:53:05,513 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:53:05,513 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:53:05,513 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:53:05,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:53:05,513 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:53:05,514 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:53:05,514 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:53:05,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:53:05,515 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 758b6bdd5f0153469513ef6931f2486fab3d5fd3aa9f01cac0e5fdb67f3e5b48 [2024-11-09 19:53:05,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:53:05,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:53:05,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:53:05,787 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:53:05,787 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:53:05,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label32.c [2024-11-09 19:53:07,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:53:07,590 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:53:07,592 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label32.c [2024-11-09 19:53:07,620 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da2d220f/aced633bd8254f5f97f76d75273b6821/FLAGd9a8f9c59 [2024-11-09 19:53:07,637 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da2d220f/aced633bd8254f5f97f76d75273b6821 [2024-11-09 19:53:07,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:53:07,641 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:53:07,644 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:53:07,645 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:53:07,650 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:53:07,652 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:53:07" (1/1) ... [2024-11-09 19:53:07,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36265b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:07, skipping insertion in model container [2024-11-09 19:53:07,653 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:53:07" (1/1) ... [2024-11-09 19:53:07,729 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:53:07,979 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label32.c[7145,7158] [2024-11-09 19:53:08,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:53:08,525 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:53:08,546 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label32.c[7145,7158] [2024-11-09 19:53:08,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:53:08,811 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:53:08,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:08 WrapperNode [2024-11-09 19:53:08,812 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:53:08,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:53:08,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:53:08,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:53:08,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:08" (1/1) ... [2024-11-09 19:53:08,876 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:08" (1/1) ... [2024-11-09 19:53:09,075 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-09 19:53:09,076 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:53:09,077 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:53:09,077 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:53:09,077 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:53:09,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:08" (1/1) ... [2024-11-09 19:53:09,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:08" (1/1) ... [2024-11-09 19:53:09,227 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:08" (1/1) ... [2024-11-09 19:53:09,358 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 19:53:09,358 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:08" (1/1) ... [2024-11-09 19:53:09,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:08" (1/1) ... [2024-11-09 19:53:09,476 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:08" (1/1) ... [2024-11-09 19:53:09,490 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:08" (1/1) ... [2024-11-09 19:53:09,507 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:08" (1/1) ... [2024-11-09 19:53:09,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:08" (1/1) ... [2024-11-09 19:53:09,555 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:53:09,556 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:53:09,557 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:53:09,557 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:53:09,558 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:08" (1/1) ... [2024-11-09 19:53:09,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:53:09,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:53:09,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 19:53:09,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 19:53:09,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:53:09,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:53:09,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:53:09,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:53:09,725 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:53:09,727 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:53:13,729 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-09 19:53:13,948 INFO L? ?]: Removed 949 outVars from TransFormulas that were not future-live. [2024-11-09 19:53:13,948 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:53:13,987 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:53:13,988 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:53:13,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:53:13 BoogieIcfgContainer [2024-11-09 19:53:13,988 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:53:13,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:53:13,993 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:53:13,996 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:53:13,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:53:07" (1/3) ... [2024-11-09 19:53:13,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a80ce11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:53:13, skipping insertion in model container [2024-11-09 19:53:13,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:08" (2/3) ... [2024-11-09 19:53:13,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a80ce11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:53:13, skipping insertion in model container [2024-11-09 19:53:13,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:53:13" (3/3) ... [2024-11-09 19:53:13,998 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label32.c [2024-11-09 19:53:14,017 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:53:14,017 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:53:14,135 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:53:14,143 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;@34e0c453, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:53:14,143 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:53:14,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:14,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 19:53:14,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:14,162 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] [2024-11-09 19:53:14,162 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:14,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:14,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1920354599, now seen corresponding path program 1 times [2024-11-09 19:53:14,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:14,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163433891] [2024-11-09 19:53:14,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:14,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:53:14,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:14,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163433891] [2024-11-09 19:53:14,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163433891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:14,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:14,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:53:14,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881172952] [2024-11-09 19:53:14,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:14,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:14,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:14,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:14,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:14,624 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:17,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:17,669 INFO L93 Difference]: Finished difference Result 1648 states and 4104 transitions. [2024-11-09 19:53:17,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:17,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-09 19:53:17,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:17,690 INFO L225 Difference]: With dead ends: 1648 [2024-11-09 19:53:17,690 INFO L226 Difference]: Without dead ends: 978 [2024-11-09 19:53:17,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:17,701 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 800 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 2501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:17,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 556 Invalid, 2501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 19:53:17,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-09 19:53:17,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 975. [2024-11-09 19:53:17,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 2.2412731006160165) internal successors, (2183), 974 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:17,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 2183 transitions. [2024-11-09 19:53:17,802 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 2183 transitions. Word has length 50 [2024-11-09 19:53:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:17,802 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 2183 transitions. [2024-11-09 19:53:17,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:17,803 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 2183 transitions. [2024-11-09 19:53:17,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 19:53:17,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:17,806 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:17,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:53:17,807 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:17,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:17,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1985000723, now seen corresponding path program 1 times [2024-11-09 19:53:17,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:17,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829955319] [2024-11-09 19:53:17,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:17,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:53:18,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:18,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829955319] [2024-11-09 19:53:18,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829955319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:18,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:18,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:53:18,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866063066] [2024-11-09 19:53:18,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:18,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:53:18,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:18,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:53:18,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:53:18,288 INFO L87 Difference]: Start difference. First operand 975 states and 2183 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:22,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:22,935 INFO L93 Difference]: Finished difference Result 3748 states and 8530 transitions. [2024-11-09 19:53:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:53:22,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2024-11-09 19:53:22,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:22,948 INFO L225 Difference]: With dead ends: 3748 [2024-11-09 19:53:22,948 INFO L226 Difference]: Without dead ends: 2775 [2024-11-09 19:53:22,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:53:22,952 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 1631 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 3981 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 4765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 3981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:22,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 277 Invalid, 4765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 3981 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-09 19:53:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2024-11-09 19:53:23,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2731. [2024-11-09 19:53:23,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2731 states, 2730 states have (on average 2.1805860805860804) internal successors, (5953), 2730 states have internal predecessors, (5953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:23,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2731 states to 2731 states and 5953 transitions. [2024-11-09 19:53:23,015 INFO L78 Accepts]: Start accepts. Automaton has 2731 states and 5953 transitions. Word has length 121 [2024-11-09 19:53:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:23,017 INFO L471 AbstractCegarLoop]: Abstraction has 2731 states and 5953 transitions. [2024-11-09 19:53:23,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2731 states and 5953 transitions. [2024-11-09 19:53:23,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-09 19:53:23,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:23,025 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:53:23,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:53:23,025 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:23,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:23,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1642233206, now seen corresponding path program 1 times [2024-11-09 19:53:23,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:23,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413790709] [2024-11-09 19:53:23,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:23,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:53:23,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413790709] [2024-11-09 19:53:23,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413790709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:23,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:23,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:53:23,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362518162] [2024-11-09 19:53:23,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:23,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:23,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:23,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:23,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:23,205 INFO L87 Difference]: Start difference. First operand 2731 states and 5953 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:25,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:25,691 INFO L93 Difference]: Finished difference Result 7246 states and 15944 transitions. [2024-11-09 19:53:25,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:25,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2024-11-09 19:53:25,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:25,712 INFO L225 Difference]: With dead ends: 7246 [2024-11-09 19:53:25,713 INFO L226 Difference]: Without dead ends: 4517 [2024-11-09 19:53:25,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:25,720 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 802 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2307 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:25,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 336 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2307 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-09 19:53:25,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2024-11-09 19:53:25,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 4487. [2024-11-09 19:53:25,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 4486 states have (on average 2.189032545697726) internal successors, (9820), 4486 states have internal predecessors, (9820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:25,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 9820 transitions. [2024-11-09 19:53:25,806 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 9820 transitions. Word has length 143 [2024-11-09 19:53:25,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:25,807 INFO L471 AbstractCegarLoop]: Abstraction has 4487 states and 9820 transitions. [2024-11-09 19:53:25,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:25,807 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 9820 transitions. [2024-11-09 19:53:25,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-09 19:53:25,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:25,810 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:53:25,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:53:25,811 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:25,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:25,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1955875939, now seen corresponding path program 1 times [2024-11-09 19:53:25,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:25,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848853855] [2024-11-09 19:53:25,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:25,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:26,188 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:53:26,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:26,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848853855] [2024-11-09 19:53:26,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848853855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:26,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:26,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:53:26,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749327507] [2024-11-09 19:53:26,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:26,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:26,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:26,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:26,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:26,192 INFO L87 Difference]: Start difference. First operand 4487 states and 9820 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:28,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:28,533 INFO L93 Difference]: Finished difference Result 8129 states and 17801 transitions. [2024-11-09 19:53:28,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:28,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2024-11-09 19:53:28,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:28,551 INFO L225 Difference]: With dead ends: 8129 [2024-11-09 19:53:28,552 INFO L226 Difference]: Without dead ends: 4507 [2024-11-09 19:53:28,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:28,557 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 713 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 2430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:28,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 543 Invalid, 2430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 19:53:28,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2024-11-09 19:53:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 4488. [2024-11-09 19:53:28,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4487 states have (on average 2.174058390907065) internal successors, (9755), 4487 states have internal predecessors, (9755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:28,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 9755 transitions. [2024-11-09 19:53:28,641 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 9755 transitions. Word has length 156 [2024-11-09 19:53:28,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:28,642 INFO L471 AbstractCegarLoop]: Abstraction has 4488 states and 9755 transitions. [2024-11-09 19:53:28,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:28,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 9755 transitions. [2024-11-09 19:53:28,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-09 19:53:28,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:28,644 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:53:28,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:53:28,644 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:28,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:28,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1770558383, now seen corresponding path program 1 times [2024-11-09 19:53:28,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:28,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664984106] [2024-11-09 19:53:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:28,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:53:29,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:29,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664984106] [2024-11-09 19:53:29,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664984106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:29,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:29,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:53:29,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134950469] [2024-11-09 19:53:29,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:29,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:53:29,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:29,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:53:29,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:53:29,112 INFO L87 Difference]: Start difference. First operand 4488 states and 9755 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 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) [2024-11-09 19:53:31,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:31,668 INFO L93 Difference]: Finished difference Result 8536 states and 18525 transitions. [2024-11-09 19:53:31,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:53:31,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 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 [2024-11-09 19:53:31,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:31,680 INFO L225 Difference]: With dead ends: 8536 [2024-11-09 19:53:31,680 INFO L226 Difference]: Without dead ends: 4050 [2024-11-09 19:53:31,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:53:31,687 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 888 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:31,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 861 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 19:53:31,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4050 states. [2024-11-09 19:53:31,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4050 to 4050. [2024-11-09 19:53:31,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4050 states, 4049 states have (on average 2.1590516176833785) internal successors, (8742), 4049 states have internal predecessors, (8742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4050 states to 4050 states and 8742 transitions. [2024-11-09 19:53:31,752 INFO L78 Accepts]: Start accepts. Automaton has 4050 states and 8742 transitions. Word has length 162 [2024-11-09 19:53:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:31,753 INFO L471 AbstractCegarLoop]: Abstraction has 4050 states and 8742 transitions. [2024-11-09 19:53:31,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 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) [2024-11-09 19:53:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 4050 states and 8742 transitions. [2024-11-09 19:53:31,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-09 19:53:31,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:31,755 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:31,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:53:31,756 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:31,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:31,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1462424886, now seen corresponding path program 1 times [2024-11-09 19:53:31,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:31,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123683073] [2024-11-09 19:53:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:31,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 19:53:32,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:32,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123683073] [2024-11-09 19:53:32,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123683073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:32,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:32,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:53:32,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250701842] [2024-11-09 19:53:32,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:32,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:32,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:32,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:32,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:32,007 INFO L87 Difference]: Start difference. First operand 4050 states and 8742 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:34,359 INFO L93 Difference]: Finished difference Result 11088 states and 24355 transitions. [2024-11-09 19:53:34,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:34,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2024-11-09 19:53:34,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:34,398 INFO L225 Difference]: With dead ends: 11088 [2024-11-09 19:53:34,398 INFO L226 Difference]: Without dead ends: 6605 [2024-11-09 19:53:34,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:34,410 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 745 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:34,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 592 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 19:53:34,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6605 states. [2024-11-09 19:53:34,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6605 to 5318. [2024-11-09 19:53:34,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5318 states, 5317 states have (on average 2.0443859319164943) internal successors, (10870), 5317 states have internal predecessors, (10870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:34,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 10870 transitions. [2024-11-09 19:53:34,518 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 10870 transitions. Word has length 191 [2024-11-09 19:53:34,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:34,518 INFO L471 AbstractCegarLoop]: Abstraction has 5318 states and 10870 transitions. [2024-11-09 19:53:34,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:34,518 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 10870 transitions. [2024-11-09 19:53:34,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-09 19:53:34,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:34,521 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:34,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:53:34,521 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:34,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:34,522 INFO L85 PathProgramCache]: Analyzing trace with hash 541582439, now seen corresponding path program 1 times [2024-11-09 19:53:34,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:34,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648663986] [2024-11-09 19:53:34,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:34,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:53:34,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:34,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648663986] [2024-11-09 19:53:34,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648663986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:34,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:34,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:53:34,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883820691] [2024-11-09 19:53:34,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:34,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:34,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:34,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:34,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:34,782 INFO L87 Difference]: Start difference. First operand 5318 states and 10870 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:36,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:36,874 INFO L93 Difference]: Finished difference Result 12761 states and 26660 transitions. [2024-11-09 19:53:36,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:36,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2024-11-09 19:53:36,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:36,886 INFO L225 Difference]: With dead ends: 12761 [2024-11-09 19:53:36,887 INFO L226 Difference]: Without dead ends: 7445 [2024-11-09 19:53:36,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:36,897 INFO L432 NwaCegarLoop]: 1105 mSDtfsCounter, 854 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 2264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:36,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1165 Invalid, 2264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:53:36,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7445 states. [2024-11-09 19:53:36,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7445 to 7445. [2024-11-09 19:53:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7445 states, 7444 states have (on average 2.050644814615798) internal successors, (15265), 7444 states have internal predecessors, (15265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:37,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7445 states to 7445 states and 15265 transitions. [2024-11-09 19:53:37,025 INFO L78 Accepts]: Start accepts. Automaton has 7445 states and 15265 transitions. Word has length 204 [2024-11-09 19:53:37,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:37,026 INFO L471 AbstractCegarLoop]: Abstraction has 7445 states and 15265 transitions. [2024-11-09 19:53:37,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:37,027 INFO L276 IsEmpty]: Start isEmpty. Operand 7445 states and 15265 transitions. [2024-11-09 19:53:37,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-09 19:53:37,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:37,029 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:37,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:53:37,030 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:37,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:37,030 INFO L85 PathProgramCache]: Analyzing trace with hash -752060351, now seen corresponding path program 1 times [2024-11-09 19:53:37,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:37,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704753533] [2024-11-09 19:53:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:37,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:53:37,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:37,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704753533] [2024-11-09 19:53:37,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704753533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:37,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:37,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:53:37,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867498684] [2024-11-09 19:53:37,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:37,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:37,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:37,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:37,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:37,224 INFO L87 Difference]: Start difference. First operand 7445 states and 15265 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:39,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:39,544 INFO L93 Difference]: Finished difference Result 18717 states and 38711 transitions. [2024-11-09 19:53:39,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:39,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 206 [2024-11-09 19:53:39,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:39,565 INFO L225 Difference]: With dead ends: 18717 [2024-11-09 19:53:39,566 INFO L226 Difference]: Without dead ends: 11274 [2024-11-09 19:53:39,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:39,575 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 764 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:39,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 492 Invalid, 2312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:53:39,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11274 states. [2024-11-09 19:53:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11274 to 8272. [2024-11-09 19:53:39,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8272 states, 8271 states have (on average 2.040744770886229) internal successors, (16879), 8271 states have internal predecessors, (16879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:39,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8272 states to 8272 states and 16879 transitions. [2024-11-09 19:53:39,807 INFO L78 Accepts]: Start accepts. Automaton has 8272 states and 16879 transitions. Word has length 206 [2024-11-09 19:53:39,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:39,807 INFO L471 AbstractCegarLoop]: Abstraction has 8272 states and 16879 transitions. [2024-11-09 19:53:39,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 8272 states and 16879 transitions. [2024-11-09 19:53:39,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-09 19:53:39,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:39,811 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:39,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:53:39,811 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:39,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:39,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1218526673, now seen corresponding path program 1 times [2024-11-09 19:53:39,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:39,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62921904] [2024-11-09 19:53:39,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:39,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:53:40,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:40,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62921904] [2024-11-09 19:53:40,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62921904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:40,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:40,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:53:40,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312119650] [2024-11-09 19:53:40,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:40,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:40,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:40,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:40,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:40,017 INFO L87 Difference]: Start difference. First operand 8272 states and 16879 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:42,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:42,485 INFO L93 Difference]: Finished difference Result 23366 states and 47919 transitions. [2024-11-09 19:53:42,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:42,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 219 [2024-11-09 19:53:42,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:42,513 INFO L225 Difference]: With dead ends: 23366 [2024-11-09 19:53:42,514 INFO L226 Difference]: Without dead ends: 15096 [2024-11-09 19:53:42,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:42,526 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 788 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 2061 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 2061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:42,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 452 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 2061 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 19:53:42,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15096 states. [2024-11-09 19:53:42,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15096 to 12960. [2024-11-09 19:53:42,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12960 states, 12959 states have (on average 2.032409908171927) internal successors, (26338), 12959 states have internal predecessors, (26338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:42,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12960 states to 12960 states and 26338 transitions. [2024-11-09 19:53:42,844 INFO L78 Accepts]: Start accepts. Automaton has 12960 states and 26338 transitions. Word has length 219 [2024-11-09 19:53:42,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:42,845 INFO L471 AbstractCegarLoop]: Abstraction has 12960 states and 26338 transitions. [2024-11-09 19:53:42,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:42,845 INFO L276 IsEmpty]: Start isEmpty. Operand 12960 states and 26338 transitions. [2024-11-09 19:53:42,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-09 19:53:42,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:42,848 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:42,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:53:42,849 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:42,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:42,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1659329721, now seen corresponding path program 1 times [2024-11-09 19:53:42,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:42,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388502128] [2024-11-09 19:53:42,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:42,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:53:42,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:42,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388502128] [2024-11-09 19:53:42,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388502128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:42,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:42,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:53:42,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47350064] [2024-11-09 19:53:42,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:42,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:42,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:42,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:42,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:42,997 INFO L87 Difference]: Start difference. First operand 12960 states and 26338 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) [2024-11-09 19:53:45,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:45,238 INFO L93 Difference]: Finished difference Result 31888 states and 65232 transitions. [2024-11-09 19:53:45,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:45,239 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 251 [2024-11-09 19:53:45,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:45,268 INFO L225 Difference]: With dead ends: 31888 [2024-11-09 19:53:45,268 INFO L226 Difference]: Without dead ends: 18930 [2024-11-09 19:53:45,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:45,286 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 816 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 2386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:45,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 396 Invalid, 2386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:53:45,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18930 states. [2024-11-09 19:53:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18930 to 17218. [2024-11-09 19:53:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17218 states, 17217 states have (on average 2.053900214903874) internal successors, (35362), 17217 states have internal predecessors, (35362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17218 states to 17218 states and 35362 transitions. [2024-11-09 19:53:45,631 INFO L78 Accepts]: Start accepts. Automaton has 17218 states and 35362 transitions. Word has length 251 [2024-11-09 19:53:45,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:45,632 INFO L471 AbstractCegarLoop]: Abstraction has 17218 states and 35362 transitions. [2024-11-09 19:53:45,632 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) [2024-11-09 19:53:45,632 INFO L276 IsEmpty]: Start isEmpty. Operand 17218 states and 35362 transitions. [2024-11-09 19:53:45,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-09 19:53:45,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:45,636 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:45,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:53:45,637 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:45,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:45,637 INFO L85 PathProgramCache]: Analyzing trace with hash -900745612, now seen corresponding path program 1 times [2024-11-09 19:53:45,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:45,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773209692] [2024-11-09 19:53:45,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:45,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:53:45,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:45,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773209692] [2024-11-09 19:53:45,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773209692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:45,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:45,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:53:45,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618970018] [2024-11-09 19:53:45,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:45,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:45,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:45,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:45,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:45,888 INFO L87 Difference]: Start difference. First operand 17218 states and 35362 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:48,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:48,173 INFO L93 Difference]: Finished difference Result 40012 states and 82150 transitions. [2024-11-09 19:53:48,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:48,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 268 [2024-11-09 19:53:48,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:48,203 INFO L225 Difference]: With dead ends: 40012 [2024-11-09 19:53:48,203 INFO L226 Difference]: Without dead ends: 22370 [2024-11-09 19:53:48,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:48,220 INFO L432 NwaCegarLoop]: 1158 mSDtfsCounter, 715 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:48,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1234 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:53:48,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22370 states. [2024-11-09 19:53:48,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22370 to 21933. [2024-11-09 19:53:48,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21933 states, 21932 states have (on average 2.015821630494255) internal successors, (44211), 21932 states have internal predecessors, (44211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:48,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21933 states to 21933 states and 44211 transitions. [2024-11-09 19:53:48,503 INFO L78 Accepts]: Start accepts. Automaton has 21933 states and 44211 transitions. Word has length 268 [2024-11-09 19:53:48,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:48,503 INFO L471 AbstractCegarLoop]: Abstraction has 21933 states and 44211 transitions. [2024-11-09 19:53:48,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:48,504 INFO L276 IsEmpty]: Start isEmpty. Operand 21933 states and 44211 transitions. [2024-11-09 19:53:48,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-09 19:53:48,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:48,508 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:48,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:53:48,508 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:48,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:48,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1518527621, now seen corresponding path program 1 times [2024-11-09 19:53:48,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:48,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169031133] [2024-11-09 19:53:48,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:48,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 234 proven. 71 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 19:53:49,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:49,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169031133] [2024-11-09 19:53:49,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169031133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:53:49,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366348141] [2024-11-09 19:53:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:49,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:53:49,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:53:49,051 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:53:49,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:53:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:49,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:53:49,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:53:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 234 proven. 71 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 19:53:49,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:53:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 19:53:49,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366348141] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:53:49,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:53:49,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-09 19:53:49,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205158317] [2024-11-09 19:53:49,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:49,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:53:49,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:49,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:53:49,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:53:49,801 INFO L87 Difference]: Start difference. First operand 21933 states and 44211 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:54,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:54,094 INFO L93 Difference]: Finished difference Result 61804 states and 124818 transitions. [2024-11-09 19:53:54,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:53:54,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 277 [2024-11-09 19:53:54,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:54,131 INFO L225 Difference]: With dead ends: 61804 [2024-11-09 19:53:54,132 INFO L226 Difference]: Without dead ends: 39008 [2024-11-09 19:53:54,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:53:54,141 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 1773 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 3681 mSolverCounterSat, 1208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1773 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 4889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1208 IncrementalHoareTripleChecker+Valid, 3681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:54,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1773 Valid, 144 Invalid, 4889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1208 Valid, 3681 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 19:53:54,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39008 states. [2024-11-09 19:53:54,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39008 to 37298. [2024-11-09 19:53:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37298 states, 37297 states have (on average 1.9998391291524789) internal successors, (74588), 37297 states have internal predecessors, (74588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37298 states to 37298 states and 74588 transitions. [2024-11-09 19:53:54,583 INFO L78 Accepts]: Start accepts. Automaton has 37298 states and 74588 transitions. Word has length 277 [2024-11-09 19:53:54,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:54,584 INFO L471 AbstractCegarLoop]: Abstraction has 37298 states and 74588 transitions. [2024-11-09 19:53:54,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:54,584 INFO L276 IsEmpty]: Start isEmpty. Operand 37298 states and 74588 transitions. [2024-11-09 19:53:54,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-09 19:53:54,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:54,587 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:54,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:53:54,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 19:53:54,788 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:54,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:54,788 INFO L85 PathProgramCache]: Analyzing trace with hash -200199944, now seen corresponding path program 1 times [2024-11-09 19:53:54,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:54,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896250203] [2024-11-09 19:53:54,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:54,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-09 19:53:54,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:54,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896250203] [2024-11-09 19:53:54,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896250203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:54,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:54,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:53:54,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526897670] [2024-11-09 19:53:54,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:54,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:54,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:54,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:54,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:54,970 INFO L87 Difference]: Start difference. First operand 37298 states and 74588 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:57,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:57,226 INFO L93 Difference]: Finished difference Result 83115 states and 166371 transitions. [2024-11-09 19:53:57,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:57,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 285 [2024-11-09 19:53:57,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:57,279 INFO L225 Difference]: With dead ends: 83115 [2024-11-09 19:53:57,280 INFO L226 Difference]: Without dead ends: 45391 [2024-11-09 19:53:57,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:57,306 INFO L432 NwaCegarLoop]: 1133 mSDtfsCounter, 738 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:57,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1199 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1896 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:53:57,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45391 states. [2024-11-09 19:53:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45391 to 45391. [2024-11-09 19:53:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45391 states, 45390 states have (on average 1.9584269662921348) internal successors, (88893), 45390 states have internal predecessors, (88893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45391 states to 45391 states and 88893 transitions. [2024-11-09 19:53:58,082 INFO L78 Accepts]: Start accepts. Automaton has 45391 states and 88893 transitions. Word has length 285 [2024-11-09 19:53:58,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:58,082 INFO L471 AbstractCegarLoop]: Abstraction has 45391 states and 88893 transitions. [2024-11-09 19:53:58,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:53:58,083 INFO L276 IsEmpty]: Start isEmpty. Operand 45391 states and 88893 transitions. [2024-11-09 19:53:58,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-09 19:53:58,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:58,091 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:58,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:53:58,092 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:58,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:58,093 INFO L85 PathProgramCache]: Analyzing trace with hash 308801535, now seen corresponding path program 1 times [2024-11-09 19:53:58,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:58,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326572559] [2024-11-09 19:53:58,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:58,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:58,827 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 377 proven. 74 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-09 19:53:58,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:58,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326572559] [2024-11-09 19:53:58,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326572559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:53:58,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705128405] [2024-11-09 19:53:58,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:58,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:53:58,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:53:58,831 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:53:58,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:53:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:59,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:53:59,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:53:59,238 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 377 proven. 74 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-09 19:53:59,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:53:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-09 19:53:59,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705128405] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:53:59,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:53:59,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-09 19:53:59,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773174893] [2024-11-09 19:53:59,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:59,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:53:59,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:59,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:53:59,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:53:59,500 INFO L87 Difference]: Start difference. First operand 45391 states and 88893 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:03,308 INFO L93 Difference]: Finished difference Result 108728 states and 212994 transitions. [2024-11-09 19:54:03,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:54:03,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 352 [2024-11-09 19:54:03,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:03,388 INFO L225 Difference]: With dead ends: 108728 [2024-11-09 19:54:03,388 INFO L226 Difference]: Without dead ends: 62909 [2024-11-09 19:54:03,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 705 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:54:03,419 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 1591 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 3706 mSolverCounterSat, 565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 4271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 565 IncrementalHoareTripleChecker+Valid, 3706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:03,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 172 Invalid, 4271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [565 Valid, 3706 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 19:54:03,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62909 states. [2024-11-09 19:54:04,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62909 to 59500. [2024-11-09 19:54:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59500 states, 59499 states have (on average 1.9610581690448579) internal successors, (116681), 59499 states have internal predecessors, (116681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:04,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59500 states to 59500 states and 116681 transitions. [2024-11-09 19:54:04,526 INFO L78 Accepts]: Start accepts. Automaton has 59500 states and 116681 transitions. Word has length 352 [2024-11-09 19:54:04,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:04,528 INFO L471 AbstractCegarLoop]: Abstraction has 59500 states and 116681 transitions. [2024-11-09 19:54:04,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:04,528 INFO L276 IsEmpty]: Start isEmpty. Operand 59500 states and 116681 transitions. [2024-11-09 19:54:04,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2024-11-09 19:54:04,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:04,561 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:54:04,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:54:04,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 19:54:04,762 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:04,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:04,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1887274721, now seen corresponding path program 1 times [2024-11-09 19:54:04,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:04,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621637371] [2024-11-09 19:54:04,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:04,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 571 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-09 19:54:05,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:05,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621637371] [2024-11-09 19:54:05,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621637371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:05,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:05,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:54:05,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496127079] [2024-11-09 19:54:05,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:05,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:05,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:05,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:05,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:05,422 INFO L87 Difference]: Start difference. First operand 59500 states and 116681 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:08,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:08,035 INFO L93 Difference]: Finished difference Result 141607 states and 277632 transitions. [2024-11-09 19:54:08,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:54:08,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 450 [2024-11-09 19:54:08,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:08,146 INFO L225 Difference]: With dead ends: 141607 [2024-11-09 19:54:08,146 INFO L226 Difference]: Without dead ends: 79541 [2024-11-09 19:54:08,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:08,170 INFO L432 NwaCegarLoop]: 974 mSDtfsCounter, 795 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 2197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:08,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1013 Invalid, 2197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1899 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:54:08,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79541 states. [2024-11-09 19:54:09,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79541 to 73133. [2024-11-09 19:54:09,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73133 states, 73132 states have (on average 1.948230596729202) internal successors, (142478), 73132 states have internal predecessors, (142478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:09,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73133 states to 73133 states and 142478 transitions. [2024-11-09 19:54:09,566 INFO L78 Accepts]: Start accepts. Automaton has 73133 states and 142478 transitions. Word has length 450 [2024-11-09 19:54:09,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:09,567 INFO L471 AbstractCegarLoop]: Abstraction has 73133 states and 142478 transitions. [2024-11-09 19:54:09,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:09,568 INFO L276 IsEmpty]: Start isEmpty. Operand 73133 states and 142478 transitions. [2024-11-09 19:54:09,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-09 19:54:09,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:09,596 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:54:09,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:54:09,600 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:09,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:09,601 INFO L85 PathProgramCache]: Analyzing trace with hash 48223995, now seen corresponding path program 1 times [2024-11-09 19:54:09,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:09,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787869715] [2024-11-09 19:54:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:09,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 19:54:10,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:10,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787869715] [2024-11-09 19:54:10,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787869715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:10,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:10,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:54:10,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391499759] [2024-11-09 19:54:10,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:10,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:54:10,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:10,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:54:10,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:54:10,326 INFO L87 Difference]: Start difference. First operand 73133 states and 142478 transitions. Second operand has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:14,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:14,007 INFO L93 Difference]: Finished difference Result 170216 states and 332435 transitions. [2024-11-09 19:54:14,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:54:14,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 454 [2024-11-09 19:54:14,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:14,136 INFO L225 Difference]: With dead ends: 170216 [2024-11-09 19:54:14,136 INFO L226 Difference]: Without dead ends: 97085 [2024-11-09 19:54:14,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:54:14,165 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 1540 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 3728 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 4177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 3728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:14,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 207 Invalid, 4177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 3728 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 19:54:14,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97085 states. [2024-11-09 19:54:15,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97085 to 94088. [2024-11-09 19:54:15,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94088 states, 94087 states have (on average 1.9555092627036679) internal successors, (183988), 94087 states have internal predecessors, (183988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:15,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94088 states to 94088 states and 183988 transitions. [2024-11-09 19:54:15,706 INFO L78 Accepts]: Start accepts. Automaton has 94088 states and 183988 transitions. Word has length 454 [2024-11-09 19:54:15,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:15,707 INFO L471 AbstractCegarLoop]: Abstraction has 94088 states and 183988 transitions. [2024-11-09 19:54:15,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:15,707 INFO L276 IsEmpty]: Start isEmpty. Operand 94088 states and 183988 transitions. [2024-11-09 19:54:15,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2024-11-09 19:54:15,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:15,720 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:54:15,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 19:54:15,721 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:15,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:15,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1657343392, now seen corresponding path program 1 times [2024-11-09 19:54:15,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:15,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226443686] [2024-11-09 19:54:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:15,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:16,561 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-09 19:54:16,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:16,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226443686] [2024-11-09 19:54:16,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226443686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:16,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:16,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:54:16,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44599448] [2024-11-09 19:54:16,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:16,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:16,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:16,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:16,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:16,564 INFO L87 Difference]: Start difference. First operand 94088 states and 183988 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:19,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:19,427 INFO L93 Difference]: Finished difference Result 198843 states and 388831 transitions. [2024-11-09 19:54:19,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:54:19,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 473 [2024-11-09 19:54:19,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:19,638 INFO L225 Difference]: With dead ends: 198843 [2024-11-09 19:54:19,639 INFO L226 Difference]: Without dead ends: 104757 [2024-11-09 19:54:19,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:19,672 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 742 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:19,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 324 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:54:19,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104757 states. [2024-11-09 19:54:21,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104757 to 104323. [2024-11-09 19:54:21,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104323 states, 104322 states have (on average 1.9500584728053527) internal successors, (203434), 104322 states have internal predecessors, (203434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)