./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.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 ab4ce27c037a23a1acb050e4e5e47861985f2a45717e88488eff45dc32b3cf64 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:08:43,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:08:43,470 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:08:43,474 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:08:43,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:08:43,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:08:43,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:08:43,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:08:43,488 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:08:43,488 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:08:43,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:08:43,488 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:08:43,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:08:43,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:08:43,489 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:08:43,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:08:43,489 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:08:43,489 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:08:43,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:08:43,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:08:43,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:08:43,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:08:43,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:08:43,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:08:43,489 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:08:43,489 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:08:43,489 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:08:43,489 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:08:43,490 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:08:43,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:08:43,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:08:43,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:08:43,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:08:43,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:08:43,490 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:08:43,490 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:08:43,490 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:08:43,490 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:08:43,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:08:43,490 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:08:43,490 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:08:43,490 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:08:43,490 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:08:43,490 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> ab4ce27c037a23a1acb050e4e5e47861985f2a45717e88488eff45dc32b3cf64 [2025-03-16 19:08:43,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:08:43,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:08:43,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:08:43,728 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:08:43,728 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:08:43,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2025-03-16 19:08:44,855 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88a3b84bc/062fb24c4e3c47258a8e259b7128b1ab/FLAG1473946a6 [2025-03-16 19:08:45,099 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:08:45,101 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2025-03-16 19:08:45,111 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88a3b84bc/062fb24c4e3c47258a8e259b7128b1ab/FLAG1473946a6 [2025-03-16 19:08:45,426 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88a3b84bc/062fb24c4e3c47258a8e259b7128b1ab [2025-03-16 19:08:45,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:08:45,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:08:45,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:08:45,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:08:45,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:08:45,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:08:45" (1/1) ... [2025-03-16 19:08:45,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bfe171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:08:45, skipping insertion in model container [2025-03-16 19:08:45,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:08:45" (1/1) ... [2025-03-16 19:08:45,456 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:08:45,634 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/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c[12667,12680] [2025-03-16 19:08:45,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:08:45,648 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:08:45,700 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/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c[12667,12680] [2025-03-16 19:08:45,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:08:45,720 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:08:45,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:08:45 WrapperNode [2025-03-16 19:08:45,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:08:45,722 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:08:45,722 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:08:45,722 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:08:45,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:08:45" (1/1) ... [2025-03-16 19:08:45,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:08:45" (1/1) ... [2025-03-16 19:08:45,752 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 378 [2025-03-16 19:08:45,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:08:45,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:08:45,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:08:45,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:08:45,761 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:08:45" (1/1) ... [2025-03-16 19:08:45,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:08:45" (1/1) ... [2025-03-16 19:08:45,763 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:08:45" (1/1) ... [2025-03-16 19:08:45,781 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]. [2025-03-16 19:08:45,784 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:08:45" (1/1) ... [2025-03-16 19:08:45,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:08:45" (1/1) ... [2025-03-16 19:08:45,792 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:08:45" (1/1) ... [2025-03-16 19:08:45,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:08:45" (1/1) ... [2025-03-16 19:08:45,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:08:45" (1/1) ... [2025-03-16 19:08:45,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:08:45" (1/1) ... [2025-03-16 19:08:45,798 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:08:45,799 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:08:45,799 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:08:45,799 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:08:45,800 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:08:45" (1/1) ... [2025-03-16 19:08:45,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:08:45,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:08:45,823 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) [2025-03-16 19:08:45,829 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 [2025-03-16 19:08:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:08:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:08:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:08:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:08:45,922 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:08:45,924 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:08:46,358 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2025-03-16 19:08:46,359 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:08:46,366 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:08:46,366 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:08:46,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:08:46 BoogieIcfgContainer [2025-03-16 19:08:46,367 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:08:46,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:08:46,368 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:08:46,371 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:08:46,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:08:45" (1/3) ... [2025-03-16 19:08:46,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed7035d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:08:46, skipping insertion in model container [2025-03-16 19:08:46,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:08:45" (2/3) ... [2025-03-16 19:08:46,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed7035d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:08:46, skipping insertion in model container [2025-03-16 19:08:46,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:08:46" (3/3) ... [2025-03-16 19:08:46,373 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2025-03-16 19:08:46,383 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:08:46,386 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c that has 1 procedures, 98 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 19:08:46,416 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:08:46,423 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;@51446c36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:08:46,423 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 19:08:46,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 96 states have (on average 1.7708333333333333) internal successors, (170), 97 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:46,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-16 19:08:46,429 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:08:46,430 INFO L218 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] [2025-03-16 19:08:46,430 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:08:46,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:08:46,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1577268178, now seen corresponding path program 1 times [2025-03-16 19:08:46,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:08:46,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480186549] [2025-03-16 19:08:46,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:46,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:08:46,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-16 19:08:46,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-16 19:08:46,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:46,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:08:46,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:08:46,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480186549] [2025-03-16 19:08:46,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480186549] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:08:46,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:08:46,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 19:08:46,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049066087] [2025-03-16 19:08:46,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:08:46,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 19:08:46,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:08:46,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 19:08:46,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 19:08:46,638 INFO L87 Difference]: Start difference. First operand has 98 states, 96 states have (on average 1.7708333333333333) internal successors, (170), 97 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:46,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:08:46,655 INFO L93 Difference]: Finished difference Result 159 states and 271 transitions. [2025-03-16 19:08:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 19:08:46,656 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2025-03-16 19:08:46,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:08:46,662 INFO L225 Difference]: With dead ends: 159 [2025-03-16 19:08:46,662 INFO L226 Difference]: Without dead ends: 96 [2025-03-16 19:08:46,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 19:08:46,666 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:08:46,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:08:46,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-03-16 19:08:46,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2025-03-16 19:08:46,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.7473684210526317) internal successors, (166), 95 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 166 transitions. [2025-03-16 19:08:46,688 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 166 transitions. Word has length 30 [2025-03-16 19:08:46,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:08:46,688 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 166 transitions. [2025-03-16 19:08:46,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:46,689 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 166 transitions. [2025-03-16 19:08:46,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-16 19:08:46,689 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:08:46,689 INFO L218 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] [2025-03-16 19:08:46,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:08:46,690 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:08:46,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:08:46,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1756085101, now seen corresponding path program 1 times [2025-03-16 19:08:46,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:08:46,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768114710] [2025-03-16 19:08:46,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:46,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:08:46,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-16 19:08:46,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-16 19:08:46,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:46,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:08:46,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:08:46,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768114710] [2025-03-16 19:08:46,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768114710] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:08:46,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:08:46,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:08:46,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803667761] [2025-03-16 19:08:46,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:08:46,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:08:46,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:08:46,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:08:46,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:08:46,993 INFO L87 Difference]: Start difference. First operand 96 states and 166 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:47,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:08:47,064 INFO L93 Difference]: Finished difference Result 159 states and 267 transitions. [2025-03-16 19:08:47,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:08:47,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2025-03-16 19:08:47,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:08:47,065 INFO L225 Difference]: With dead ends: 159 [2025-03-16 19:08:47,065 INFO L226 Difference]: Without dead ends: 96 [2025-03-16 19:08:47,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:08:47,066 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:08:47,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 459 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:08:47,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-03-16 19:08:47,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2025-03-16 19:08:47,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.4105263157894736) internal successors, (134), 95 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:47,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 134 transitions. [2025-03-16 19:08:47,074 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 134 transitions. Word has length 30 [2025-03-16 19:08:47,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:08:47,074 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 134 transitions. [2025-03-16 19:08:47,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:47,074 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 134 transitions. [2025-03-16 19:08:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 19:08:47,076 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:08:47,077 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:08:47,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:08:47,077 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:08:47,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:08:47,077 INFO L85 PathProgramCache]: Analyzing trace with hash -365015558, now seen corresponding path program 1 times [2025-03-16 19:08:47,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:08:47,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744408432] [2025-03-16 19:08:47,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:47,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:08:47,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 19:08:47,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 19:08:47,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:47,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:08:47,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:08:47,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744408432] [2025-03-16 19:08:47,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744408432] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:08:47,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:08:47,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:08:47,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206266341] [2025-03-16 19:08:47,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:08:47,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:08:47,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:08:47,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:08:47,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:08:47,170 INFO L87 Difference]: Start difference. First operand 96 states and 134 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:47,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:08:47,200 INFO L93 Difference]: Finished difference Result 208 states and 316 transitions. [2025-03-16 19:08:47,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:08:47,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-03-16 19:08:47,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:08:47,205 INFO L225 Difference]: With dead ends: 208 [2025-03-16 19:08:47,205 INFO L226 Difference]: Without dead ends: 148 [2025-03-16 19:08:47,205 INFO L434 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 [2025-03-16 19:08:47,206 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 78 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:08:47,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 282 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:08:47,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2025-03-16 19:08:47,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2025-03-16 19:08:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.4896551724137932) internal successors, (216), 145 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 216 transitions. [2025-03-16 19:08:47,219 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 216 transitions. Word has length 61 [2025-03-16 19:08:47,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:08:47,219 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 216 transitions. [2025-03-16 19:08:47,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 216 transitions. [2025-03-16 19:08:47,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 19:08:47,224 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:08:47,224 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:08:47,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:08:47,225 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:08:47,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:08:47,225 INFO L85 PathProgramCache]: Analyzing trace with hash 333815853, now seen corresponding path program 1 times [2025-03-16 19:08:47,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:08:47,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502030636] [2025-03-16 19:08:47,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:47,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:08:47,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 19:08:47,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 19:08:47,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:47,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:08:47,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:08:47,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502030636] [2025-03-16 19:08:47,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502030636] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:08:47,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:08:47,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:08:47,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293695952] [2025-03-16 19:08:47,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:08:47,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:08:47,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:08:47,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:08:47,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:08:47,300 INFO L87 Difference]: Start difference. First operand 146 states and 216 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:47,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:08:47,317 INFO L93 Difference]: Finished difference Result 350 states and 548 transitions. [2025-03-16 19:08:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:08:47,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-03-16 19:08:47,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:08:47,319 INFO L225 Difference]: With dead ends: 350 [2025-03-16 19:08:47,319 INFO L226 Difference]: Without dead ends: 240 [2025-03-16 19:08:47,319 INFO L434 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 [2025-03-16 19:08:47,320 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 74 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:08:47,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 279 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:08:47,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2025-03-16 19:08:47,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2025-03-16 19:08:47,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.540084388185654) internal successors, (365), 237 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:47,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 365 transitions. [2025-03-16 19:08:47,336 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 365 transitions. Word has length 61 [2025-03-16 19:08:47,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:08:47,338 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 365 transitions. [2025-03-16 19:08:47,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:47,338 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 365 transitions. [2025-03-16 19:08:47,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 19:08:47,339 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:08:47,339 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:08:47,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:08:47,340 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:08:47,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:08:47,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1952709664, now seen corresponding path program 1 times [2025-03-16 19:08:47,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:08:47,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424113386] [2025-03-16 19:08:47,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:47,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:08:47,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 19:08:47,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 19:08:47,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:47,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:08:47,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:08:47,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424113386] [2025-03-16 19:08:47,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424113386] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:08:47,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:08:47,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:08:47,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776202702] [2025-03-16 19:08:47,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:08:47,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:08:47,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:08:47,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:08:47,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:08:47,424 INFO L87 Difference]: Start difference. First operand 238 states and 365 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:47,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:08:47,451 INFO L93 Difference]: Finished difference Result 610 states and 967 transitions. [2025-03-16 19:08:47,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:08:47,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-03-16 19:08:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:08:47,454 INFO L225 Difference]: With dead ends: 610 [2025-03-16 19:08:47,454 INFO L226 Difference]: Without dead ends: 408 [2025-03-16 19:08:47,454 INFO L434 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 [2025-03-16 19:08:47,455 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 70 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:08:47,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 276 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:08:47,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2025-03-16 19:08:47,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 406. [2025-03-16 19:08:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.5629629629629629) internal successors, (633), 405 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:47,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 633 transitions. [2025-03-16 19:08:47,498 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 633 transitions. Word has length 61 [2025-03-16 19:08:47,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:08:47,498 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 633 transitions. [2025-03-16 19:08:47,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:47,498 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 633 transitions. [2025-03-16 19:08:47,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 19:08:47,499 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:08:47,499 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:08:47,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:08:47,499 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:08:47,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:08:47,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1431946989, now seen corresponding path program 1 times [2025-03-16 19:08:47,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:08:47,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458603600] [2025-03-16 19:08:47,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:47,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:08:47,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 19:08:47,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 19:08:47,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:47,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:47,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:08:47,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:08:47,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458603600] [2025-03-16 19:08:47,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458603600] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:08:47,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:08:47,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:08:47,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348212249] [2025-03-16 19:08:47,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:08:47,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:08:47,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:08:47,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:08:47,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:08:47,644 INFO L87 Difference]: Start difference. First operand 406 states and 633 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:47,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:08:47,773 INFO L93 Difference]: Finished difference Result 2626 states and 4215 transitions. [2025-03-16 19:08:47,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 19:08:47,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-03-16 19:08:47,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:08:47,781 INFO L225 Difference]: With dead ends: 2626 [2025-03-16 19:08:47,781 INFO L226 Difference]: Without dead ends: 2256 [2025-03-16 19:08:47,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:08:47,783 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 932 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:08:47,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 1208 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:08:47,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2025-03-16 19:08:47,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 774. [2025-03-16 19:08:47,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 773 states have (on average 1.5692108667529108) internal successors, (1213), 773 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:47,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1213 transitions. [2025-03-16 19:08:47,817 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1213 transitions. Word has length 61 [2025-03-16 19:08:47,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:08:47,818 INFO L471 AbstractCegarLoop]: Abstraction has 774 states and 1213 transitions. [2025-03-16 19:08:47,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:47,818 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1213 transitions. [2025-03-16 19:08:47,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-16 19:08:47,821 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:08:47,821 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:08:47,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:08:47,821 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:08:47,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:08:47,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1439728431, now seen corresponding path program 1 times [2025-03-16 19:08:47,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:08:47,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54850896] [2025-03-16 19:08:47,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:47,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:08:47,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-16 19:08:47,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-16 19:08:47,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:47,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:48,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:08:48,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:08:48,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54850896] [2025-03-16 19:08:48,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54850896] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:08:48,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:08:48,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:08:48,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229667174] [2025-03-16 19:08:48,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:08:48,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:08:48,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:08:48,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:08:48,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:08:48,046 INFO L87 Difference]: Start difference. First operand 774 states and 1213 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:48,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:08:48,085 INFO L93 Difference]: Finished difference Result 808 states and 1262 transitions. [2025-03-16 19:08:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:08:48,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-03-16 19:08:48,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:08:48,088 INFO L225 Difference]: With dead ends: 808 [2025-03-16 19:08:48,089 INFO L226 Difference]: Without dead ends: 806 [2025-03-16 19:08:48,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:08:48,091 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:08:48,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 640 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:08:48,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2025-03-16 19:08:48,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2025-03-16 19:08:48,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 805 states have (on average 1.546583850931677) internal successors, (1245), 805 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:48,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1245 transitions. [2025-03-16 19:08:48,121 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1245 transitions. Word has length 62 [2025-03-16 19:08:48,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:08:48,122 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1245 transitions. [2025-03-16 19:08:48,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:48,122 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1245 transitions. [2025-03-16 19:08:48,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-16 19:08:48,123 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:08:48,123 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:08:48,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:08:48,124 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:08:48,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:08:48,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1679046509, now seen corresponding path program 1 times [2025-03-16 19:08:48,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:08:48,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86924277] [2025-03-16 19:08:48,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:48,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:08:48,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-16 19:08:48,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-16 19:08:48,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:48,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:08:48,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:08:48,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86924277] [2025-03-16 19:08:48,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86924277] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:08:48,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:08:48,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:08:48,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510094998] [2025-03-16 19:08:48,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:08:48,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:08:48,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:08:48,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:08:48,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:08:48,190 INFO L87 Difference]: Start difference. First operand 806 states and 1245 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:48,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:08:48,218 INFO L93 Difference]: Finished difference Result 2234 states and 3471 transitions. [2025-03-16 19:08:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:08:48,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-03-16 19:08:48,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:08:48,224 INFO L225 Difference]: With dead ends: 2234 [2025-03-16 19:08:48,224 INFO L226 Difference]: Without dead ends: 1464 [2025-03-16 19:08:48,225 INFO L434 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 [2025-03-16 19:08:48,225 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 62 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:08:48,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 224 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:08:48,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2025-03-16 19:08:48,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1446. [2025-03-16 19:08:48,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 1.5314878892733563) internal successors, (2213), 1445 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:48,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 2213 transitions. [2025-03-16 19:08:48,274 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 2213 transitions. Word has length 63 [2025-03-16 19:08:48,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:08:48,274 INFO L471 AbstractCegarLoop]: Abstraction has 1446 states and 2213 transitions. [2025-03-16 19:08:48,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:48,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 2213 transitions. [2025-03-16 19:08:48,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-16 19:08:48,278 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:08:48,278 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:08:48,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:08:48,278 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:08:48,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:08:48,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2128701506, now seen corresponding path program 1 times [2025-03-16 19:08:48,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:08:48,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674077629] [2025-03-16 19:08:48,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:48,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:08:48,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-16 19:08:48,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-16 19:08:48,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:48,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:08:48,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:08:48,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674077629] [2025-03-16 19:08:48,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674077629] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:08:48,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:08:48,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:08:48,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773606110] [2025-03-16 19:08:48,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:08:48,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:08:48,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:08:48,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:08:48,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:08:48,323 INFO L87 Difference]: Start difference. First operand 1446 states and 2213 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:08:48,364 INFO L93 Difference]: Finished difference Result 4010 states and 6119 transitions. [2025-03-16 19:08:48,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:08:48,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-03-16 19:08:48,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:08:48,372 INFO L225 Difference]: With dead ends: 4010 [2025-03-16 19:08:48,372 INFO L226 Difference]: Without dead ends: 2600 [2025-03-16 19:08:48,374 INFO L434 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 [2025-03-16 19:08:48,375 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 82 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:08:48,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 296 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:08:48,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2025-03-16 19:08:48,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2598. [2025-03-16 19:08:48,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2598 states, 2597 states have (on average 1.5051983057373892) internal successors, (3909), 2597 states have internal predecessors, (3909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 3909 transitions. [2025-03-16 19:08:48,434 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 3909 transitions. Word has length 64 [2025-03-16 19:08:48,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:08:48,435 INFO L471 AbstractCegarLoop]: Abstraction has 2598 states and 3909 transitions. [2025-03-16 19:08:48,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:48,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 3909 transitions. [2025-03-16 19:08:48,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-16 19:08:48,435 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:08:48,435 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:08:48,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:08:48,435 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:08:48,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:08:48,436 INFO L85 PathProgramCache]: Analyzing trace with hash -526523812, now seen corresponding path program 1 times [2025-03-16 19:08:48,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:08:48,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806878946] [2025-03-16 19:08:48,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:48,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:08:48,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-16 19:08:48,450 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-16 19:08:48,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:48,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:08:48,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:08:48,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806878946] [2025-03-16 19:08:48,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806878946] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:08:48,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:08:48,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:08:48,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611737977] [2025-03-16 19:08:48,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:08:48,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:08:48,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:08:48,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:08:48,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:08:48,478 INFO L87 Difference]: Start difference. First operand 2598 states and 3909 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:48,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:08:48,538 INFO L93 Difference]: Finished difference Result 5133 states and 7787 transitions. [2025-03-16 19:08:48,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:08:48,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2025-03-16 19:08:48,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:08:48,550 INFO L225 Difference]: With dead ends: 5133 [2025-03-16 19:08:48,551 INFO L226 Difference]: Without dead ends: 3722 [2025-03-16 19:08:48,553 INFO L434 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 [2025-03-16 19:08:48,553 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 83 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:08:48,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 307 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:08:48,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2025-03-16 19:08:48,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 3720. [2025-03-16 19:08:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3719 states have (on average 1.4990588867975263) internal successors, (5575), 3719 states have internal predecessors, (5575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:48,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 5575 transitions. [2025-03-16 19:08:48,643 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 5575 transitions. Word has length 65 [2025-03-16 19:08:48,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:08:48,644 INFO L471 AbstractCegarLoop]: Abstraction has 3720 states and 5575 transitions. [2025-03-16 19:08:48,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:48,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 5575 transitions. [2025-03-16 19:08:48,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 19:08:48,646 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:08:48,646 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 19:08:48,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:08:48,646 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:08:48,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:08:48,647 INFO L85 PathProgramCache]: Analyzing trace with hash -669537132, now seen corresponding path program 1 times [2025-03-16 19:08:48,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:08:48,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137109778] [2025-03-16 19:08:48,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:48,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:08:48,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 19:08:48,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 19:08:48,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:48,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 19:08:48,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:08:48,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137109778] [2025-03-16 19:08:48,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137109778] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:08:48,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:08:48,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:08:48,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040744029] [2025-03-16 19:08:48,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:08:48,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:08:48,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:08:48,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:08:48,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:08:48,790 INFO L87 Difference]: Start difference. First operand 3720 states and 5575 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:08:49,021 INFO L93 Difference]: Finished difference Result 12388 states and 18813 transitions. [2025-03-16 19:08:49,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 19:08:49,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 90 [2025-03-16 19:08:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:08:49,055 INFO L225 Difference]: With dead ends: 12388 [2025-03-16 19:08:49,056 INFO L226 Difference]: Without dead ends: 10530 [2025-03-16 19:08:49,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:08:49,065 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 847 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:08:49,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 939 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:08:49,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10530 states. [2025-03-16 19:08:49,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10530 to 5544. [2025-03-16 19:08:49,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5544 states, 5543 states have (on average 1.4993685729749233) internal successors, (8311), 5543 states have internal predecessors, (8311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:49,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5544 states to 5544 states and 8311 transitions. [2025-03-16 19:08:49,253 INFO L78 Accepts]: Start accepts. Automaton has 5544 states and 8311 transitions. Word has length 90 [2025-03-16 19:08:49,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:08:49,253 INFO L471 AbstractCegarLoop]: Abstraction has 5544 states and 8311 transitions. [2025-03-16 19:08:49,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:49,253 INFO L276 IsEmpty]: Start isEmpty. Operand 5544 states and 8311 transitions. [2025-03-16 19:08:49,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 19:08:49,257 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:08:49,257 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 19:08:49,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 19:08:49,257 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:08:49,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:08:49,258 INFO L85 PathProgramCache]: Analyzing trace with hash 111563303, now seen corresponding path program 1 times [2025-03-16 19:08:49,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:08:49,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254933288] [2025-03-16 19:08:49,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:49,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:08:49,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 19:08:49,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 19:08:49,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:49,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 19:08:49,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:08:49,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254933288] [2025-03-16 19:08:49,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254933288] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:08:49,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:08:49,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:08:49,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911024465] [2025-03-16 19:08:49,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:08:49,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:08:49,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:08:49,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:08:49,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:08:49,388 INFO L87 Difference]: Start difference. First operand 5544 states and 8311 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:49,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:08:49,640 INFO L93 Difference]: Finished difference Result 14212 states and 21549 transitions. [2025-03-16 19:08:49,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 19:08:49,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 90 [2025-03-16 19:08:49,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:08:49,671 INFO L225 Difference]: With dead ends: 14212 [2025-03-16 19:08:49,671 INFO L226 Difference]: Without dead ends: 12354 [2025-03-16 19:08:49,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:08:49,675 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 921 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:08:49,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 900 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:08:49,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12354 states. [2025-03-16 19:08:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12354 to 7368. [2025-03-16 19:08:49,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7368 states, 7367 states have (on average 1.4995249083751867) internal successors, (11047), 7367 states have internal predecessors, (11047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7368 states to 7368 states and 11047 transitions. [2025-03-16 19:08:49,895 INFO L78 Accepts]: Start accepts. Automaton has 7368 states and 11047 transitions. Word has length 90 [2025-03-16 19:08:49,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:08:49,895 INFO L471 AbstractCegarLoop]: Abstraction has 7368 states and 11047 transitions. [2025-03-16 19:08:49,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:49,895 INFO L276 IsEmpty]: Start isEmpty. Operand 7368 states and 11047 transitions. [2025-03-16 19:08:49,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 19:08:49,898 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:08:49,898 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 19:08:49,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 19:08:49,898 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:08:49,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:08:49,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1078675142, now seen corresponding path program 1 times [2025-03-16 19:08:49,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:08:49,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228859934] [2025-03-16 19:08:49,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:49,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:08:49,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 19:08:49,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 19:08:49,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:49,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 19:08:50,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:08:50,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228859934] [2025-03-16 19:08:50,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228859934] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:08:50,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:08:50,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:08:50,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628686897] [2025-03-16 19:08:50,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:08:50,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:08:50,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:08:50,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:08:50,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:08:50,025 INFO L87 Difference]: Start difference. First operand 7368 states and 11047 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:50,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:08:50,304 INFO L93 Difference]: Finished difference Result 16036 states and 24285 transitions. [2025-03-16 19:08:50,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 19:08:50,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 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 90 [2025-03-16 19:08:50,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:08:50,331 INFO L225 Difference]: With dead ends: 16036 [2025-03-16 19:08:50,331 INFO L226 Difference]: Without dead ends: 14178 [2025-03-16 19:08:50,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:08:50,337 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 845 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:08:50,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 956 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:08:50,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14178 states. [2025-03-16 19:08:50,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14178 to 9192. [2025-03-16 19:08:50,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9192 states, 9191 states have (on average 1.4996191926884996) internal successors, (13783), 9191 states have internal predecessors, (13783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9192 states to 9192 states and 13783 transitions. [2025-03-16 19:08:50,629 INFO L78 Accepts]: Start accepts. Automaton has 9192 states and 13783 transitions. Word has length 90 [2025-03-16 19:08:50,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:08:50,629 INFO L471 AbstractCegarLoop]: Abstraction has 9192 states and 13783 transitions. [2025-03-16 19:08:50,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:50,630 INFO L276 IsEmpty]: Start isEmpty. Operand 9192 states and 13783 transitions. [2025-03-16 19:08:50,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 19:08:50,633 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:08:50,633 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:08:50,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 19:08:50,633 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:08:50,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:08:50,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1265128940, now seen corresponding path program 1 times [2025-03-16 19:08:50,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:08:50,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726847571] [2025-03-16 19:08:50,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:50,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:08:50,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 19:08:50,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 19:08:50,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:50,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-16 19:08:50,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:08:50,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726847571] [2025-03-16 19:08:50,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726847571] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:08:50,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:08:50,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:08:50,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383216294] [2025-03-16 19:08:50,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:08:50,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:08:50,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:08:50,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:08:50,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:08:50,815 INFO L87 Difference]: Start difference. First operand 9192 states and 13783 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:51,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:08:51,082 INFO L93 Difference]: Finished difference Result 17860 states and 27021 transitions. [2025-03-16 19:08:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 19:08:51,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 90 [2025-03-16 19:08:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:08:51,113 INFO L225 Difference]: With dead ends: 17860 [2025-03-16 19:08:51,113 INFO L226 Difference]: Without dead ends: 16002 [2025-03-16 19:08:51,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:08:51,123 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 787 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:08:51,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1111 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:08:51,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16002 states. [2025-03-16 19:08:51,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16002 to 11016. [2025-03-16 19:08:51,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11016 states, 11015 states have (on average 1.499682251475261) internal successors, (16519), 11015 states have internal predecessors, (16519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:51,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11016 states to 11016 states and 16519 transitions. [2025-03-16 19:08:51,415 INFO L78 Accepts]: Start accepts. Automaton has 11016 states and 16519 transitions. Word has length 90 [2025-03-16 19:08:51,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:08:51,415 INFO L471 AbstractCegarLoop]: Abstraction has 11016 states and 16519 transitions. [2025-03-16 19:08:51,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand 11016 states and 16519 transitions. [2025-03-16 19:08:51,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 19:08:51,421 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:08:51,421 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:08:51,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 19:08:51,421 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:08:51,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:08:51,422 INFO L85 PathProgramCache]: Analyzing trace with hash 583207412, now seen corresponding path program 1 times [2025-03-16 19:08:51,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:08:51,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198190578] [2025-03-16 19:08:51,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:51,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:08:51,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 19:08:51,448 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 19:08:51,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:51,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:08:51,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:08:51,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198190578] [2025-03-16 19:08:51,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198190578] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:08:51,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:08:51,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:08:51,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641453001] [2025-03-16 19:08:51,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:08:51,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:08:51,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:08:51,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:08:51,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:08:51,516 INFO L87 Difference]: Start difference. First operand 11016 states and 16519 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:51,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:08:51,683 INFO L93 Difference]: Finished difference Result 21996 states and 33001 transitions. [2025-03-16 19:08:51,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:08:51,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2025-03-16 19:08:51,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:08:51,701 INFO L225 Difference]: With dead ends: 21996 [2025-03-16 19:08:51,701 INFO L226 Difference]: Without dead ends: 11018 [2025-03-16 19:08:51,708 INFO L434 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 [2025-03-16 19:08:51,708 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 66 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:08:51,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 295 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:08:51,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11018 states. [2025-03-16 19:08:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11018 to 11016. [2025-03-16 19:08:51,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11016 states, 11015 states have (on average 1.486609169314571) internal successors, (16375), 11015 states have internal predecessors, (16375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:51,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11016 states to 11016 states and 16375 transitions. [2025-03-16 19:08:51,915 INFO L78 Accepts]: Start accepts. Automaton has 11016 states and 16375 transitions. Word has length 91 [2025-03-16 19:08:51,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:08:51,916 INFO L471 AbstractCegarLoop]: Abstraction has 11016 states and 16375 transitions. [2025-03-16 19:08:51,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:08:51,916 INFO L276 IsEmpty]: Start isEmpty. Operand 11016 states and 16375 transitions. [2025-03-16 19:08:51,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 19:08:51,918 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:08:51,918 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:08:51,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 19:08:51,919 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:08:51,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:08:51,919 INFO L85 PathProgramCache]: Analyzing trace with hash -914134527, now seen corresponding path program 1 times [2025-03-16 19:08:51,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:08:51,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799107565] [2025-03-16 19:08:51,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:51,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:08:51,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 19:08:51,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 19:08:51,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:51,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:08:53,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:08:53,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799107565] [2025-03-16 19:08:53,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799107565] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:08:53,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737329129] [2025-03-16 19:08:53,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:08:53,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:08:53,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:08:53,238 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) [2025-03-16 19:08:53,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 19:08:53,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 19:08:53,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 19:08:53,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:08:53,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:08:53,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-16 19:08:53,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:08:53,743 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:08:53,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:08:54,106 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:08:54,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737329129] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:08:54,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:08:54,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 7] total 21 [2025-03-16 19:08:54,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652094403] [2025-03-16 19:08:54,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:08:54,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-16 19:08:54,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:08:54,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-16 19:08:54,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2025-03-16 19:08:54,108 INFO L87 Difference]: Start difference. First operand 11016 states and 16375 transitions. Second operand has 21 states, 21 states have (on average 12.761904761904763) internal successors, (268), 21 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) [2025-03-16 19:09:06,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:09:06,555 INFO L93 Difference]: Finished difference Result 138976 states and 204735 transitions. [2025-03-16 19:09:06,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2025-03-16 19:09:06,555 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.761904761904763) internal successors, (268), 21 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 91 [2025-03-16 19:09:06,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:09:06,908 INFO L225 Difference]: With dead ends: 138976 [2025-03-16 19:09:06,908 INFO L226 Difference]: Without dead ends: 131390 [2025-03-16 19:09:06,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21569 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=5818, Invalid=43688, Unknown=0, NotChecked=0, Total=49506 [2025-03-16 19:09:06,951 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 6827 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6827 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-16 19:09:06,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6827 Valid, 2193 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2431 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-16 19:09:07,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131390 states. [2025-03-16 19:09:09,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131390 to 103824. [2025-03-16 19:09:09,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103824 states, 103823 states have (on average 1.4617859241208595) internal successors, (151767), 103823 states have internal predecessors, (151767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:09:09,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103824 states to 103824 states and 151767 transitions. [2025-03-16 19:09:09,470 INFO L78 Accepts]: Start accepts. Automaton has 103824 states and 151767 transitions. Word has length 91 [2025-03-16 19:09:09,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:09:09,471 INFO L471 AbstractCegarLoop]: Abstraction has 103824 states and 151767 transitions. [2025-03-16 19:09:09,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.761904761904763) internal successors, (268), 21 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) [2025-03-16 19:09:09,471 INFO L276 IsEmpty]: Start isEmpty. Operand 103824 states and 151767 transitions. [2025-03-16 19:09:09,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 19:09:09,475 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:09:09,475 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:09:09,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 19:09:09,679 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,SelfDestructingSolverStorable15 [2025-03-16 19:09:09,679 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:09:09,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:09:09,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1837512936, now seen corresponding path program 1 times [2025-03-16 19:09:09,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:09:09,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714866370] [2025-03-16 19:09:09,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:09:09,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:09:09,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 19:09:09,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 19:09:09,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:09:09,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:09:09,744 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:09:09,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:09:09,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714866370] [2025-03-16 19:09:09,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714866370] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:09:09,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:09:09,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:09:09,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750332148] [2025-03-16 19:09:09,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:09:09,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:09:09,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:09:09,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:09:09,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:09:09,746 INFO L87 Difference]: Start difference. First operand 103824 states and 151767 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:09:12,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:09:12,799 INFO L93 Difference]: Finished difference Result 309860 states and 452153 transitions. [2025-03-16 19:09:12,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:09:12,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2025-03-16 19:09:12,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:09:13,090 INFO L225 Difference]: With dead ends: 309860 [2025-03-16 19:09:13,090 INFO L226 Difference]: Without dead ends: 206074 [2025-03-16 19:09:13,161 INFO L434 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 [2025-03-16 19:09:13,161 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 63 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:09:13,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 266 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:09:13,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206074 states. [2025-03-16 19:09:17,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206074 to 206072. [2025-03-16 19:09:17,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206072 states, 206071 states have (on average 1.4466809982967035) internal successors, (298119), 206071 states have internal predecessors, (298119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:09:18,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206072 states to 206072 states and 298119 transitions. [2025-03-16 19:09:18,121 INFO L78 Accepts]: Start accepts. Automaton has 206072 states and 298119 transitions. Word has length 92 [2025-03-16 19:09:18,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:09:18,122 INFO L471 AbstractCegarLoop]: Abstraction has 206072 states and 298119 transitions. [2025-03-16 19:09:18,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:09:18,122 INFO L276 IsEmpty]: Start isEmpty. Operand 206072 states and 298119 transitions. [2025-03-16 19:09:18,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 19:09:18,128 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:09:18,128 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:09:18,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 19:09:18,128 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:09:18,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:09:18,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2019444857, now seen corresponding path program 1 times [2025-03-16 19:09:18,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:09:18,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278523687] [2025-03-16 19:09:18,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:09:18,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:09:18,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 19:09:18,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 19:09:18,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:09:18,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:09:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 19:09:18,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:09:18,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278523687] [2025-03-16 19:09:18,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278523687] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:09:18,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:09:18,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:09:18,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360758339] [2025-03-16 19:09:18,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:09:18,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:09:18,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:09:18,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:09:18,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:09:18,272 INFO L87 Difference]: Start difference. First operand 206072 states and 298119 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:09:23,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:09:23,826 INFO L93 Difference]: Finished difference Result 368948 states and 537777 transitions. [2025-03-16 19:09:23,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 19:09:23,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 92 [2025-03-16 19:09:23,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:09:24,236 INFO L225 Difference]: With dead ends: 368948 [2025-03-16 19:09:24,236 INFO L226 Difference]: Without dead ends: 338610 [2025-03-16 19:09:24,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:09:24,298 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 769 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:09:24,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1278 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:09:24,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338610 states.