./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 0c05b3481ca1dc1c692f840aeed292bcc36fc4d3f2b591c1dabda29806aee6c8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 21:14:08,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 21:14:08,844 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 21:14:08,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 21:14:08,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 21:14:08,880 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 21:14:08,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 21:14:08,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 21:14:08,882 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 21:14:08,882 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 21:14:08,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 21:14:08,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 21:14:08,882 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 21:14:08,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 21:14:08,882 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 21:14:08,883 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 21:14:08,883 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 21:14:08,883 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 21:14:08,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 21:14:08,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 21:14:08,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 21:14:08,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 21:14:08,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 21:14:08,884 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 21:14:08,884 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 21:14:08,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 21:14:08,884 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 21:14:08,884 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 21:14:08,884 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 21:14:08,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 21:14:08,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 21:14:08,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 21:14:08,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 21:14:08,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 21:14:08,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 21:14:08,885 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 21:14:08,885 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 21:14:08,885 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 21:14:08,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 21:14:08,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 21:14:08,886 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 21:14:08,886 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 21:14:08,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 21:14:08,886 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-jdk21/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 -> 0c05b3481ca1dc1c692f840aeed292bcc36fc4d3f2b591c1dabda29806aee6c8 [2025-02-05 21:14:09,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 21:14:09,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 21:14:09,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 21:14:09,192 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 21:14:09,193 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 21:14:09,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i [2025-02-05 21:14:10,540 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cd52bc2f9/37dc0a7d83774c24abc90977c6ca800e/FLAG64ca05744 [2025-02-05 21:14:10,802 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 21:14:10,803 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i [2025-02-05 21:14:10,811 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cd52bc2f9/37dc0a7d83774c24abc90977c6ca800e/FLAG64ca05744 [2025-02-05 21:14:11,102 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cd52bc2f9/37dc0a7d83774c24abc90977c6ca800e [2025-02-05 21:14:11,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 21:14:11,107 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 21:14:11,108 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 21:14:11,108 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 21:14:11,112 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 21:14:11,113 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:14:11" (1/1) ... [2025-02-05 21:14:11,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@abf2fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:14:11, skipping insertion in model container [2025-02-05 21:14:11,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:14:11" (1/1) ... [2025-02-05 21:14:11,141 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 21:14:11,275 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i[916,929] [2025-02-05 21:14:11,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 21:14:11,414 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 21:14:11,423 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i[916,929] [2025-02-05 21:14:11,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 21:14:11,489 INFO L204 MainTranslator]: Completed translation [2025-02-05 21:14:11,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:14:11 WrapperNode [2025-02-05 21:14:11,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 21:14:11,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 21:14:11,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 21:14:11,491 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 21:14:11,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:14:11" (1/1) ... [2025-02-05 21:14:11,511 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:14:11" (1/1) ... [2025-02-05 21:14:11,560 INFO L138 Inliner]: procedures = 26, calls = 82, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 406 [2025-02-05 21:14:11,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 21:14:11,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 21:14:11,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 21:14:11,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 21:14:11,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:14:11" (1/1) ... [2025-02-05 21:14:11,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:14:11" (1/1) ... [2025-02-05 21:14:11,577 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:14:11" (1/1) ... [2025-02-05 21:14:11,598 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]. [2025-02-05 21:14:11,598 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:14:11" (1/1) ... [2025-02-05 21:14:11,598 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:14:11" (1/1) ... [2025-02-05 21:14:11,618 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:14:11" (1/1) ... [2025-02-05 21:14:11,620 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:14:11" (1/1) ... [2025-02-05 21:14:11,626 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:14:11" (1/1) ... [2025-02-05 21:14:11,627 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:14:11" (1/1) ... [2025-02-05 21:14:11,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 21:14:11,638 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 21:14:11,638 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 21:14:11,638 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 21:14:11,639 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:14:11" (1/1) ... [2025-02-05 21:14:11,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 21:14:11,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 21:14:11,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 21:14:11,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 21:14:11,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 21:14:11,699 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 21:14:11,699 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 21:14:11,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 21:14:11,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 21:14:11,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 21:14:11,814 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 21:14:11,816 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 21:14:12,311 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L312: havoc property_#t~ite45#1;havoc property_#t~ite44#1;havoc property_#t~bitwise43#1;havoc property_#t~short46#1; [2025-02-05 21:14:12,386 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2025-02-05 21:14:12,386 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 21:14:12,413 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 21:14:12,416 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 21:14:12,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:14:12 BoogieIcfgContainer [2025-02-05 21:14:12,416 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 21:14:12,419 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 21:14:12,419 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 21:14:12,423 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 21:14:12,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 09:14:11" (1/3) ... [2025-02-05 21:14:12,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e225cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:14:12, skipping insertion in model container [2025-02-05 21:14:12,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:14:11" (2/3) ... [2025-02-05 21:14:12,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e225cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:14:12, skipping insertion in model container [2025-02-05 21:14:12,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:14:12" (3/3) ... [2025-02-05 21:14:12,426 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-61.i [2025-02-05 21:14:12,439 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 21:14:12,442 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-61.i that has 2 procedures, 181 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 21:14:12,538 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 21:14:12,550 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;@ff9e4a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 21:14:12,551 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 21:14:12,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 109 states have (on average 1.4403669724770642) internal successors, (157), 110 states have internal predecessors, (157), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2025-02-05 21:14:12,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2025-02-05 21:14:12,580 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:14:12,582 INFO L218 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 21:14:12,582 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:14:12,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:14:12,590 INFO L85 PathProgramCache]: Analyzing trace with hash 2019207260, now seen corresponding path program 1 times [2025-02-05 21:14:12,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:14:12,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526967342] [2025-02-05 21:14:12,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:14:12,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:14:12,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-02-05 21:14:12,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-02-05 21:14:12,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:14:12,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:14:13,111 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2025-02-05 21:14:13,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:14:13,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526967342] [2025-02-05 21:14:13,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526967342] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 21:14:13,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774603123] [2025-02-05 21:14:13,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:14:13,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 21:14:13,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 21:14:13,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 21:14:13,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 21:14:13,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-02-05 21:14:13,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-02-05 21:14:13,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:14:13,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:14:13,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 21:14:13,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 21:14:13,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2025-02-05 21:14:13,506 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 21:14:13,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774603123] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:14:13,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 21:14:13,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-05 21:14:13,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377828688] [2025-02-05 21:14:13,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:14:13,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 21:14:13,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:14:13,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 21:14:13,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 21:14:13,534 INFO L87 Difference]: Start difference. First operand has 181 states, 109 states have (on average 1.4403669724770642) internal successors, (157), 110 states have internal predecessors, (157), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Second operand has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2025-02-05 21:14:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:14:13,590 INFO L93 Difference]: Finished difference Result 356 states and 654 transitions. [2025-02-05 21:14:13,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 21:14:13,592 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) Word has length 421 [2025-02-05 21:14:13,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:14:13,602 INFO L225 Difference]: With dead ends: 356 [2025-02-05 21:14:13,602 INFO L226 Difference]: Without dead ends: 178 [2025-02-05 21:14:13,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 21:14:13,609 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 21:14:13,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 284 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 21:14:13,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-02-05 21:14:13,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2025-02-05 21:14:13,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 107 states have (on average 1.4018691588785046) internal successors, (150), 107 states have internal predecessors, (150), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2025-02-05 21:14:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 288 transitions. [2025-02-05 21:14:13,678 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 288 transitions. Word has length 421 [2025-02-05 21:14:13,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:14:13,679 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 288 transitions. [2025-02-05 21:14:13,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2025-02-05 21:14:13,679 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 288 transitions. [2025-02-05 21:14:13,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2025-02-05 21:14:13,692 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:14:13,693 INFO L218 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 21:14:13,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 21:14:13,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-05 21:14:13,894 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:14:13,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:14:13,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1143485499, now seen corresponding path program 1 times [2025-02-05 21:14:13,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:14:13,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452244417] [2025-02-05 21:14:13,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:14:13,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:14:13,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-02-05 21:14:14,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-02-05 21:14:14,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:14:14,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:14:14,493 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2025-02-05 21:14:14,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:14:14,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452244417] [2025-02-05 21:14:14,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452244417] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:14:14,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 21:14:14,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 21:14:14,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203798270] [2025-02-05 21:14:14,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:14:14,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 21:14:14,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:14:14,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 21:14:14,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 21:14:14,500 INFO L87 Difference]: Start difference. First operand 178 states and 288 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-02-05 21:14:14,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:14:14,569 INFO L93 Difference]: Finished difference Result 353 states and 573 transitions. [2025-02-05 21:14:14,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 21:14:14,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 421 [2025-02-05 21:14:14,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:14:14,575 INFO L225 Difference]: With dead ends: 353 [2025-02-05 21:14:14,577 INFO L226 Difference]: Without dead ends: 178 [2025-02-05 21:14:14,579 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 [2025-02-05 21:14:14,579 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 0 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 21:14:14,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 559 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 21:14:14,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-02-05 21:14:14,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2025-02-05 21:14:14,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 107 states have (on average 1.3925233644859814) internal successors, (149), 107 states have internal predecessors, (149), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2025-02-05 21:14:14,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 287 transitions. [2025-02-05 21:14:14,613 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 287 transitions. Word has length 421 [2025-02-05 21:14:14,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:14:14,617 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 287 transitions. [2025-02-05 21:14:14,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-02-05 21:14:14,618 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 287 transitions. [2025-02-05 21:14:14,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2025-02-05 21:14:14,625 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:14:14,626 INFO L218 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 21:14:14,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 21:14:14,626 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:14:14,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:14:14,627 INFO L85 PathProgramCache]: Analyzing trace with hash 299013628, now seen corresponding path program 1 times [2025-02-05 21:14:14,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:14:14,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39707192] [2025-02-05 21:14:14,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:14:14,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:14:14,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-02-05 21:14:14,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-02-05 21:14:14,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:14:14,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:14:15,477 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2025-02-05 21:14:15,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:14:15,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39707192] [2025-02-05 21:14:15,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39707192] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:14:15,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 21:14:15,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 21:14:15,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700886705] [2025-02-05 21:14:15,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:14:15,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 21:14:15,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:14:15,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 21:14:15,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 21:14:15,483 INFO L87 Difference]: Start difference. First operand 178 states and 287 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-02-05 21:14:15,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:14:15,854 INFO L93 Difference]: Finished difference Result 353 states and 571 transitions. [2025-02-05 21:14:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 21:14:15,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 421 [2025-02-05 21:14:15,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:14:15,861 INFO L225 Difference]: With dead ends: 353 [2025-02-05 21:14:15,861 INFO L226 Difference]: Without dead ends: 178 [2025-02-05 21:14:15,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 21:14:15,862 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 157 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 21:14:15,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 413 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 21:14:15,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-02-05 21:14:15,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2025-02-05 21:14:15,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 107 states have (on average 1.3831775700934579) internal successors, (148), 107 states have internal predecessors, (148), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2025-02-05 21:14:15,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 286 transitions. [2025-02-05 21:14:15,898 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 286 transitions. Word has length 421 [2025-02-05 21:14:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:14:15,901 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 286 transitions. [2025-02-05 21:14:15,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-02-05 21:14:15,901 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 286 transitions. [2025-02-05 21:14:15,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2025-02-05 21:14:15,909 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:14:15,909 INFO L218 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 21:14:15,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 21:14:15,909 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:14:15,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:14:15,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1806565437, now seen corresponding path program 1 times [2025-02-05 21:14:15,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:14:15,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432987670] [2025-02-05 21:14:15,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:14:15,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:14:15,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-02-05 21:14:16,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-02-05 21:14:16,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:14:16,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:14:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2025-02-05 21:14:16,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:14:16,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432987670] [2025-02-05 21:14:16,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432987670] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:14:16,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 21:14:16,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 21:14:16,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098828743] [2025-02-05 21:14:16,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:14:16,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 21:14:16,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:14:16,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 21:14:16,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 21:14:16,597 INFO L87 Difference]: Start difference. First operand 178 states and 286 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-02-05 21:14:16,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:14:16,956 INFO L93 Difference]: Finished difference Result 725 states and 1159 transitions. [2025-02-05 21:14:16,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 21:14:16,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 421 [2025-02-05 21:14:16,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:14:16,965 INFO L225 Difference]: With dead ends: 725 [2025-02-05 21:14:16,966 INFO L226 Difference]: Without dead ends: 550 [2025-02-05 21:14:16,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-05 21:14:16,968 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 591 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 21:14:16,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1609 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 21:14:16,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2025-02-05 21:14:17,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 287. [2025-02-05 21:14:17,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 185 states have (on average 1.4216216216216215) internal successors, (263), 186 states have internal predecessors, (263), 99 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (99), 98 states have call predecessors, (99), 99 states have call successors, (99) [2025-02-05 21:14:17,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 461 transitions. [2025-02-05 21:14:17,055 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 461 transitions. Word has length 421 [2025-02-05 21:14:17,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:14:17,056 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 461 transitions. [2025-02-05 21:14:17,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-02-05 21:14:17,056 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 461 transitions. [2025-02-05 21:14:17,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2025-02-05 21:14:17,062 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:14:17,062 INFO L218 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 21:14:17,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 21:14:17,063 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:14:17,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:14:17,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1739558684, now seen corresponding path program 1 times [2025-02-05 21:14:17,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:14:17,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447946674] [2025-02-05 21:14:17,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:14:17,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:14:17,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-02-05 21:14:17,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-02-05 21:14:17,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:14:17,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:14:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2025-02-05 21:14:17,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:14:17,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447946674] [2025-02-05 21:14:17,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447946674] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:14:17,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 21:14:17,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 21:14:17,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143820163] [2025-02-05 21:14:17,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:14:17,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 21:14:17,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:14:17,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 21:14:17,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 21:14:17,677 INFO L87 Difference]: Start difference. First operand 287 states and 461 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-02-05 21:14:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:14:18,540 INFO L93 Difference]: Finished difference Result 853 states and 1373 transitions. [2025-02-05 21:14:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 21:14:18,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 421 [2025-02-05 21:14:18,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:14:18,546 INFO L225 Difference]: With dead ends: 853 [2025-02-05 21:14:18,547 INFO L226 Difference]: Without dead ends: 569 [2025-02-05 21:14:18,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-05 21:14:18,549 INFO L435 NwaCegarLoop]: 533 mSDtfsCounter, 301 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 21:14:18,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 657 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 21:14:18,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2025-02-05 21:14:18,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 335. [2025-02-05 21:14:18,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 233 states have (on average 1.4291845493562232) internal successors, (333), 234 states have internal predecessors, (333), 99 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (99), 98 states have call predecessors, (99), 99 states have call successors, (99) [2025-02-05 21:14:18,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 531 transitions. [2025-02-05 21:14:18,648 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 531 transitions. Word has length 421 [2025-02-05 21:14:18,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:14:18,651 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 531 transitions. [2025-02-05 21:14:18,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-02-05 21:14:18,652 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 531 transitions. [2025-02-05 21:14:18,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2025-02-05 21:14:18,659 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:14:18,660 INFO L218 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 21:14:18,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 21:14:18,664 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:14:18,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:14:18,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1202098915, now seen corresponding path program 1 times [2025-02-05 21:14:18,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:14:18,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82139209] [2025-02-05 21:14:18,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:14:18,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:14:18,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-02-05 21:14:18,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-02-05 21:14:18,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:14:18,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat