./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-16.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_operatoramount_amount250_file-16.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 8e52341f27f00c0c2ceedafaab379711ebb86ba8e7b8a717254138078fb8d030 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 02:14:18,799 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 02:14:18,845 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 02:14:18,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 02:14:18,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 02:14:18,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 02:14:18,874 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 02:14:18,874 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 02:14:18,874 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 02:14:18,874 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 02:14:18,874 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 02:14:18,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 02:14:18,875 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 02:14:18,875 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 02:14:18,875 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 02:14:18,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 02:14:18,875 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 02:14:18,875 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 02:14:18,875 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 02:14:18,875 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 02:14:18,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 02:14:18,875 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 02:14:18,875 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 02:14:18,875 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 02:14:18,875 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 02:14:18,875 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 02:14:18,875 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 02:14:18,875 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 02:14:18,876 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 02:14:18,876 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 02:14:18,876 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 02:14:18,876 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 02:14:18,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:14:18,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 02:14:18,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 02:14:18,876 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 02:14:18,876 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 02:14:18,876 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 02:14:18,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 02:14:18,876 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 02:14:18,876 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 02:14:18,876 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 02:14:18,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 02:14:18,876 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 -> 8e52341f27f00c0c2ceedafaab379711ebb86ba8e7b8a717254138078fb8d030 [2025-02-06 02:14:19,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 02:14:19,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 02:14:19,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 02:14:19,111 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 02:14:19,112 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 02:14:19,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-16.i [2025-02-06 02:14:20,243 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e632c521a/cdac405fef634683b509411d20de1b1e/FLAG6969891a5 [2025-02-06 02:14:20,568 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 02:14:20,569 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-16.i [2025-02-06 02:14:20,581 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e632c521a/cdac405fef634683b509411d20de1b1e/FLAG6969891a5 [2025-02-06 02:14:20,596 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e632c521a/cdac405fef634683b509411d20de1b1e [2025-02-06 02:14:20,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 02:14:20,599 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 02:14:20,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 02:14:20,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 02:14:20,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 02:14:20,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:14:20" (1/1) ... [2025-02-06 02:14:20,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a5ce99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:20, skipping insertion in model container [2025-02-06 02:14:20,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:14:20" (1/1) ... [2025-02-06 02:14:20,631 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 02:14:20,739 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_operatoramount_amount250_file-16.i[916,929] [2025-02-06 02:14:20,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:14:20,870 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 02:14:20,877 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_operatoramount_amount250_file-16.i[916,929] [2025-02-06 02:14:20,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:14:20,934 INFO L204 MainTranslator]: Completed translation [2025-02-06 02:14:20,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:20 WrapperNode [2025-02-06 02:14:20,936 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 02:14:20,937 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 02:14:20,937 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 02:14:20,937 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 02:14:20,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:20" (1/1) ... [2025-02-06 02:14:20,955 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:20" (1/1) ... [2025-02-06 02:14:20,994 INFO L138 Inliner]: procedures = 26, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 425 [2025-02-06 02:14:20,994 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 02:14:20,994 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 02:14:20,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 02:14:20,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 02:14:21,000 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:20" (1/1) ... [2025-02-06 02:14:21,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:20" (1/1) ... [2025-02-06 02:14:21,007 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:20" (1/1) ... [2025-02-06 02:14:21,029 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]. [2025-02-06 02:14:21,029 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:20" (1/1) ... [2025-02-06 02:14:21,029 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:20" (1/1) ... [2025-02-06 02:14:21,046 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:20" (1/1) ... [2025-02-06 02:14:21,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:20" (1/1) ... [2025-02-06 02:14:21,057 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:20" (1/1) ... [2025-02-06 02:14:21,061 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:20" (1/1) ... [2025-02-06 02:14:21,071 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 02:14:21,072 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 02:14:21,072 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 02:14:21,072 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 02:14:21,073 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:20" (1/1) ... [2025-02-06 02:14:21,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:14:21,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:14:21,102 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) [2025-02-06 02:14:21,104 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 [2025-02-06 02:14:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 02:14:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 02:14:21,119 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 02:14:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 02:14:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 02:14:21,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 02:14:21,190 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 02:14:21,191 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 02:14:21,715 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L355: havoc property_#t~bitwise35#1;havoc property_#t~short36#1;havoc property_#t~bitwise37#1;havoc property_#t~short38#1;havoc property_#t~bitwise39#1;havoc property_#t~short40#1; [2025-02-06 02:14:21,769 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2025-02-06 02:14:21,770 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 02:14:21,787 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 02:14:21,787 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 02:14:21,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:14:21 BoogieIcfgContainer [2025-02-06 02:14:21,788 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 02:14:21,789 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 02:14:21,789 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 02:14:21,792 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 02:14:21,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:14:20" (1/3) ... [2025-02-06 02:14:21,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb5bdbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:14:21, skipping insertion in model container [2025-02-06 02:14:21,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:20" (2/3) ... [2025-02-06 02:14:21,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb5bdbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:14:21, skipping insertion in model container [2025-02-06 02:14:21,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:14:21" (3/3) ... [2025-02-06 02:14:21,794 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-16.i [2025-02-06 02:14:21,802 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 02:14:21,808 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-16.i that has 2 procedures, 168 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 02:14:21,849 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 02:14:21,858 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;@1d315a9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 02:14:21,858 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 02:14:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 168 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 117 states have internal predecessors, (173), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-02-06 02:14:21,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2025-02-06 02:14:21,874 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:14:21,875 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:14:21,875 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:14:21,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:14:21,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1701040520, now seen corresponding path program 1 times [2025-02-06 02:14:21,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:14:21,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780875912] [2025-02-06 02:14:21,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:14:21,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:14:21,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 321 statements into 1 equivalence classes. [2025-02-06 02:14:22,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 321 of 321 statements. [2025-02-06 02:14:22,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:14:22,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:14:22,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2025-02-06 02:14:22,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:14:22,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780875912] [2025-02-06 02:14:22,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780875912] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:14:22,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890869069] [2025-02-06 02:14:22,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:14:22,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:14:22,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:14:22,369 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) [2025-02-06 02:14:22,372 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 [2025-02-06 02:14:22,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 321 statements into 1 equivalence classes. [2025-02-06 02:14:22,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 321 of 321 statements. [2025-02-06 02:14:22,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:14:22,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:14:22,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 02:14:22,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:14:22,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2025-02-06 02:14:22,674 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 02:14:22,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890869069] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:14:22,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:14:22,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 02:14:22,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37928189] [2025-02-06 02:14:22,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:14:22,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 02:14:22,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:14:22,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 02:14:22,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:14:22,702 INFO L87 Difference]: Start difference. First operand has 168 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 117 states have internal predecessors, (173), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) 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, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2025-02-06 02:14:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:14:22,753 INFO L93 Difference]: Finished difference Result 330 states and 586 transitions. [2025-02-06 02:14:22,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 02:14:22,756 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, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) Word has length 321 [2025-02-06 02:14:22,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:14:22,769 INFO L225 Difference]: With dead ends: 330 [2025-02-06 02:14:22,770 INFO L226 Difference]: Without dead ends: 165 [2025-02-06 02:14:22,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:14:22,776 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:14:22,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 259 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:14:22,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2025-02-06 02:14:22,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2025-02-06 02:14:22,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 114 states have (on average 1.4649122807017543) internal successors, (167), 114 states have internal predecessors, (167), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-02-06 02:14:22,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 265 transitions. [2025-02-06 02:14:22,836 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 265 transitions. Word has length 321 [2025-02-06 02:14:22,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:14:22,837 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 265 transitions. [2025-02-06 02:14:22,838 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, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2025-02-06 02:14:22,838 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 265 transitions. [2025-02-06 02:14:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2025-02-06 02:14:22,842 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:14:22,842 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:14:22,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 02:14:23,046 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 [2025-02-06 02:14:23,047 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:14:23,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:14:23,049 INFO L85 PathProgramCache]: Analyzing trace with hash -238458265, now seen corresponding path program 1 times [2025-02-06 02:14:23,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:14:23,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360470459] [2025-02-06 02:14:23,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:14:23,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:14:23,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 321 statements into 1 equivalence classes. [2025-02-06 02:14:23,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 321 of 321 statements. [2025-02-06 02:14:23,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:14:23,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:14:23,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-02-06 02:14:23,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:14:23,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360470459] [2025-02-06 02:14:23,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360470459] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:14:23,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:14:23,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:14:23,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608144075] [2025-02-06 02:14:23,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:14:23,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:14:23,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:14:23,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:14:23,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:14:23,405 INFO L87 Difference]: Start difference. First operand 165 states and 265 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, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-06 02:14:23,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:14:23,509 INFO L93 Difference]: Finished difference Result 476 states and 766 transitions. [2025-02-06 02:14:23,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:14:23,509 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, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 321 [2025-02-06 02:14:23,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:14:23,515 INFO L225 Difference]: With dead ends: 476 [2025-02-06 02:14:23,516 INFO L226 Difference]: Without dead ends: 314 [2025-02-06 02:14:23,517 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 [2025-02-06 02:14:23,518 INFO L435 NwaCegarLoop]: 446 mSDtfsCounter, 222 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:14:23,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 690 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:14:23,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2025-02-06 02:14:23,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 189. [2025-02-06 02:14:23,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 138 states have (on average 1.5) internal successors, (207), 138 states have internal predecessors, (207), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-02-06 02:14:23,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 305 transitions. [2025-02-06 02:14:23,546 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 305 transitions. Word has length 321 [2025-02-06 02:14:23,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:14:23,547 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 305 transitions. [2025-02-06 02:14:23,547 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, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-06 02:14:23,547 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 305 transitions. [2025-02-06 02:14:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2025-02-06 02:14:23,552 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:14:23,553 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:14:23,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 02:14:23,553 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:14:23,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:14:23,553 INFO L85 PathProgramCache]: Analyzing trace with hash 112341672, now seen corresponding path program 1 times [2025-02-06 02:14:23,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:14:23,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142701652] [2025-02-06 02:14:23,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:14:23,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:14:23,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 321 statements into 1 equivalence classes. [2025-02-06 02:14:23,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 321 of 321 statements. [2025-02-06 02:14:23,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:14:23,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:14:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-02-06 02:14:24,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:14:24,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142701652] [2025-02-06 02:14:24,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142701652] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:14:24,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:14:24,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:14:24,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156691851] [2025-02-06 02:14:24,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:14:24,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:14:24,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:14:24,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:14:24,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:14:24,214 INFO L87 Difference]: Start difference. First operand 189 states and 305 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, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-06 02:14:24,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:14:24,569 INFO L93 Difference]: Finished difference Result 661 states and 1074 transitions. [2025-02-06 02:14:24,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:14:24,570 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, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 321 [2025-02-06 02:14:24,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:14:24,577 INFO L225 Difference]: With dead ends: 661 [2025-02-06 02:14:24,577 INFO L226 Difference]: Without dead ends: 475 [2025-02-06 02:14:24,577 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 [2025-02-06 02:14:24,580 INFO L435 NwaCegarLoop]: 364 mSDtfsCounter, 289 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:14:24,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 860 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 02:14:24,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2025-02-06 02:14:24,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 381. [2025-02-06 02:14:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 280 states have (on average 1.5071428571428571) internal successors, (422), 280 states have internal predecessors, (422), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2025-02-06 02:14:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 618 transitions. [2025-02-06 02:14:24,650 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 618 transitions. Word has length 321 [2025-02-06 02:14:24,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:14:24,651 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 618 transitions. [2025-02-06 02:14:24,651 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, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-06 02:14:24,651 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 618 transitions. [2025-02-06 02:14:24,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2025-02-06 02:14:24,653 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:14:24,654 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:14:24,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 02:14:24,654 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:14:24,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:14:24,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1163686661, now seen corresponding path program 1 times [2025-02-06 02:14:24,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:14:24,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780818304] [2025-02-06 02:14:24,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:14:24,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:14:24,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 322 statements into 1 equivalence classes. [2025-02-06 02:14:24,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 322 of 322 statements. [2025-02-06 02:14:24,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:14:24,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:14:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-02-06 02:14:25,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:14:25,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780818304] [2025-02-06 02:14:25,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780818304] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:14:25,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:14:25,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:14:25,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596837871] [2025-02-06 02:14:25,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:14:25,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:14:25,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:14:25,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:14:25,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:14:25,037 INFO L87 Difference]: Start difference. First operand 381 states and 618 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-06 02:14:25,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:14:25,106 INFO L93 Difference]: Finished difference Result 1137 states and 1848 transitions. [2025-02-06 02:14:25,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:14:25,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 322 [2025-02-06 02:14:25,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:14:25,113 INFO L225 Difference]: With dead ends: 1137 [2025-02-06 02:14:25,113 INFO L226 Difference]: Without dead ends: 759 [2025-02-06 02:14:25,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:14:25,115 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 158 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:14:25,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 505 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:14:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2025-02-06 02:14:25,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 757. [2025-02-06 02:14:25,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 556 states have (on average 1.5035971223021583) internal successors, (836), 556 states have internal predecessors, (836), 196 states have call successors, (196), 4 states have call predecessors, (196), 4 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2025-02-06 02:14:25,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1228 transitions. [2025-02-06 02:14:25,184 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1228 transitions. Word has length 322 [2025-02-06 02:14:25,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:14:25,184 INFO L471 AbstractCegarLoop]: Abstraction has 757 states and 1228 transitions. [2025-02-06 02:14:25,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-06 02:14:25,185 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1228 transitions. [2025-02-06 02:14:25,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2025-02-06 02:14:25,188 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:14:25,188 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:14:25,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 02:14:25,188 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:14:25,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:14:25,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1375037574, now seen corresponding path program 1 times [2025-02-06 02:14:25,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:14:25,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192291375] [2025-02-06 02:14:25,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:14:25,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:14:25,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 322 statements into 1 equivalence classes. [2025-02-06 02:14:25,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 322 of 322 statements. [2025-02-06 02:14:25,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:14:25,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:14:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-02-06 02:14:26,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:14:26,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192291375] [2025-02-06 02:14:26,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192291375] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:14:26,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:14:26,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 02:14:26,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357684963] [2025-02-06 02:14:26,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:14:26,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 02:14:26,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:14:26,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 02:14:26,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 02:14:26,017 INFO L87 Difference]: Start difference. First operand 757 states and 1228 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-06 02:14:26,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:14:26,608 INFO L93 Difference]: Finished difference Result 1938 states and 3145 transitions. [2025-02-06 02:14:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 02:14:26,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 322 [2025-02-06 02:14:26,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:14:26,614 INFO L225 Difference]: With dead ends: 1938 [2025-02-06 02:14:26,615 INFO L226 Difference]: Without dead ends: 1184 [2025-02-06 02:14:26,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 02:14:26,617 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 321 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 02:14:26,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 835 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 02:14:26,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2025-02-06 02:14:26,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1154. [2025-02-06 02:14:26,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 903 states have (on average 1.539313399778516) internal successors, (1390), 903 states have internal predecessors, (1390), 245 states have call successors, (245), 5 states have call predecessors, (245), 5 states have return successors, (245), 245 states have call predecessors, (245), 245 states have call successors, (245) [2025-02-06 02:14:26,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1880 transitions. [2025-02-06 02:14:26,696 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1880 transitions. Word has length 322 [2025-02-06 02:14:26,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:14:26,696 INFO L471 AbstractCegarLoop]: Abstraction has 1154 states and 1880 transitions. [2025-02-06 02:14:26,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-06 02:14:26,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1880 transitions. [2025-02-06 02:14:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2025-02-06 02:14:26,700 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:14:26,700 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:14:26,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 02:14:26,700 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:14:26,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:14:26,701 INFO L85 PathProgramCache]: Analyzing trace with hash -969629467, now seen corresponding path program 1 times [2025-02-06 02:14:26,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:14:26,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885472964] [2025-02-06 02:14:26,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:14:26,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:14:26,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 322 statements into 1 equivalence classes. [2025-02-06 02:14:26,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 322 of 322 statements. [2025-02-06 02:14:26,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:14:26,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:14:27,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-02-06 02:14:27,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:14:27,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885472964] [2025-02-06 02:14:27,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885472964] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:14:27,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:14:27,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:14:27,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510767918] [2025-02-06 02:14:27,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:14:27,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:14:27,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:14:27,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:14:27,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:14:27,193 INFO L87 Difference]: Start difference. First operand 1154 states and 1880 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-06 02:14:27,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:14:27,510 INFO L93 Difference]: Finished difference Result 3638 states and 5933 transitions. [2025-02-06 02:14:27,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:14:27,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 322 [2025-02-06 02:14:27,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:14:27,520 INFO L225 Difference]: With dead ends: 3638 [2025-02-06 02:14:27,520 INFO L226 Difference]: Without dead ends: 2580 [2025-02-06 02:14:27,522 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 [2025-02-06 02:14:27,523 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 290 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:14:27,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 849 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 02:14:27,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2025-02-06 02:14:27,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2204. [2025-02-06 02:14:27,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 1753 states have (on average 1.5390758699372504) internal successors, (2698), 1753 states have internal predecessors, (2698), 441 states have call successors, (441), 9 states have call predecessors, (441), 9 states have return successors, (441), 441 states have call predecessors, (441), 441 states have call successors, (441) [2025-02-06 02:14:27,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 3580 transitions. [2025-02-06 02:14:27,696 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 3580 transitions. Word has length 322 [2025-02-06 02:14:27,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:14:27,696 INFO L471 AbstractCegarLoop]: Abstraction has 2204 states and 3580 transitions. [2025-02-06 02:14:27,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-06 02:14:27,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 3580 transitions. [2025-02-06 02:14:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2025-02-06 02:14:27,700 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:14:27,700 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:14:27,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 02:14:27,700 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:14:27,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:14:27,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1402844647, now seen corresponding path program 1 times [2025-02-06 02:14:27,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:14:27,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226616984] [2025-02-06 02:14:27,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:14:27,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:14:27,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 323 statements into 1 equivalence classes. [2025-02-06 02:14:28,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 323 of 323 statements. [2025-02-06 02:14:28,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:14:28,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:14:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 18 proven. 126 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-02-06 02:14:28,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:14:28,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226616984] [2025-02-06 02:14:28,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226616984] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:14:28,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551127233] [2025-02-06 02:14:28,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:14:28,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:14:28,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:14:28,889 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:14:28,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 02:14:28,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 323 statements into 1 equivalence classes. [2025-02-06 02:14:29,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 323 of 323 statements. [2025-02-06 02:14:29,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:14:29,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:14:29,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-02-06 02:14:29,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:14:31,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 3401 proven. 486 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2025-02-06 02:14:31,793 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:14:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 324 proven. 495 refuted. 0 times theorem prover too weak. 3885 trivial. 0 not checked. [2025-02-06 02:14:36,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551127233] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:14:36,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:14:36,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 25, 26] total 56 [2025-02-06 02:14:36,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803057260] [2025-02-06 02:14:36,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:14:36,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-02-06 02:14:36,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:14:36,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-02-06 02:14:36,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=735, Invalid=2345, Unknown=0, NotChecked=0, Total=3080 [2025-02-06 02:14:36,620 INFO L87 Difference]: Start difference. First operand 2204 states and 3580 transitions. Second operand has 56 states, 55 states have (on average 4.163636363636364) internal successors, (229), 54 states have internal predecessors, (229), 18 states have call successors, (147), 9 states have call predecessors, (147), 21 states have return successors, (147), 18 states have call predecessors, (147), 18 states have call successors, (147) [2025-02-06 02:15:05,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:05,980 INFO L93 Difference]: Finished difference Result 39097 states and 60661 transitions. [2025-02-06 02:15:05,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 353 states. [2025-02-06 02:15:05,982 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 4.163636363636364) internal successors, (229), 54 states have internal predecessors, (229), 18 states have call successors, (147), 9 states have call predecessors, (147), 21 states have return successors, (147), 18 states have call predecessors, (147), 18 states have call successors, (147) Word has length 323 [2025-02-06 02:15:05,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:06,122 INFO L225 Difference]: With dead ends: 39097 [2025-02-06 02:15:06,122 INFO L226 Difference]: Without dead ends: 37071 [2025-02-06 02:15:06,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1063 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 400 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71161 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=23449, Invalid=137753, Unknown=0, NotChecked=0, Total=161202 [2025-02-06 02:15:06,154 INFO L435 NwaCegarLoop]: 558 mSDtfsCounter, 12033 mSDsluCounter, 6580 mSDsCounter, 0 mSdLazyCounter, 10235 mSolverCounterSat, 3313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12034 SdHoareTripleChecker+Valid, 7138 SdHoareTripleChecker+Invalid, 13548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3313 IncrementalHoareTripleChecker+Valid, 10235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:06,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12034 Valid, 7138 Invalid, 13548 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3313 Valid, 10235 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2025-02-06 02:15:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37071 states. [2025-02-06 02:15:07,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37071 to 22901. [2025-02-06 02:15:07,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22901 states, 19913 states have (on average 1.5479837292221161) internal successors, (30825), 19973 states have internal predecessors, (30825), 2601 states have call successors, (2601), 386 states have call predecessors, (2601), 386 states have return successors, (2601), 2541 states have call predecessors, (2601), 2601 states have call successors, (2601) [2025-02-06 02:15:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22901 states to 22901 states and 36027 transitions. [2025-02-06 02:15:07,667 INFO L78 Accepts]: Start accepts. Automaton has 22901 states and 36027 transitions. Word has length 323 [2025-02-06 02:15:07,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:07,669 INFO L471 AbstractCegarLoop]: Abstraction has 22901 states and 36027 transitions. [2025-02-06 02:15:07,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 4.163636363636364) internal successors, (229), 54 states have internal predecessors, (229), 18 states have call successors, (147), 9 states have call predecessors, (147), 21 states have return successors, (147), 18 states have call predecessors, (147), 18 states have call successors, (147) [2025-02-06 02:15:07,673 INFO L276 IsEmpty]: Start isEmpty. Operand 22901 states and 36027 transitions. [2025-02-06 02:15:07,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2025-02-06 02:15:07,687 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:07,688 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:15:07,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 02:15:07,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:07,889 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:07,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash 123414181, now seen corresponding path program 1 times [2025-02-06 02:15:07,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:07,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623629713] [2025-02-06 02:15:07,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:07,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:07,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 323 statements into 1 equivalence classes. [2025-02-06 02:15:08,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 323 of 323 statements. [2025-02-06 02:15:08,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:08,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:10,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 129 proven. 285 refuted. 0 times theorem prover too weak. 4290 trivial. 0 not checked. [2025-02-06 02:15:10,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:10,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623629713] [2025-02-06 02:15:10,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623629713] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:15:10,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609959166] [2025-02-06 02:15:10,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:10,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:10,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:15:10,699 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:15:10,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 02:15:10,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 323 statements into 1 equivalence classes. [2025-02-06 02:15:10,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 323 of 323 statements. [2025-02-06 02:15:10,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:10,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:10,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-02-06 02:15:10,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:15:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 3222 proven. 417 refuted. 0 times theorem prover too weak. 1065 trivial. 0 not checked. [2025-02-06 02:15:14,411 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:15:17,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 393 proven. 426 refuted. 0 times theorem prover too weak. 3885 trivial. 0 not checked. [2025-02-06 02:15:17,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609959166] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:15:17,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:15:17,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 27, 26] total 63 [2025-02-06 02:15:17,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387833929] [2025-02-06 02:15:17,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:15:17,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-02-06 02:15:17,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:17,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-02-06 02:15:17,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=3143, Unknown=0, NotChecked=0, Total=3906 [2025-02-06 02:15:17,605 INFO L87 Difference]: Start difference. First operand 22901 states and 36027 transitions. Second operand has 63 states, 59 states have (on average 3.9152542372881354) internal successors, (231), 56 states have internal predecessors, (231), 22 states have call successors, (147), 9 states have call predecessors, (147), 19 states have return successors, (147), 21 states have call predecessors, (147), 22 states have call successors, (147) [2025-02-06 02:15:46,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:46,767 INFO L93 Difference]: Finished difference Result 74629 states and 113539 transitions. [2025-02-06 02:15:46,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2025-02-06 02:15:46,774 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 59 states have (on average 3.9152542372881354) internal successors, (231), 56 states have internal predecessors, (231), 22 states have call successors, (147), 9 states have call predecessors, (147), 19 states have return successors, (147), 21 states have call predecessors, (147), 22 states have call successors, (147) Word has length 323 [2025-02-06 02:15:46,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:46,947 INFO L225 Difference]: With dead ends: 74629 [2025-02-06 02:15:46,947 INFO L226 Difference]: Without dead ends: 51891 [2025-02-06 02:15:46,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 911 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28004 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=13074, Invalid=62276, Unknown=0, NotChecked=0, Total=75350 [2025-02-06 02:15:46,993 INFO L435 NwaCegarLoop]: 402 mSDtfsCounter, 5753 mSDsluCounter, 7905 mSDsCounter, 0 mSdLazyCounter, 10496 mSolverCounterSat, 2316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5778 SdHoareTripleChecker+Valid, 8307 SdHoareTripleChecker+Invalid, 12812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2316 IncrementalHoareTripleChecker+Valid, 10496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:46,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5778 Valid, 8307 Invalid, 12812 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2316 Valid, 10496 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2025-02-06 02:15:47,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51891 states. [2025-02-06 02:15:51,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51891 to 36973. [2025-02-06 02:15:51,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36973 states, 31469 states have (on average 1.5230544345228638) internal successors, (47929), 31601 states have internal predecessors, (47929), 4709 states have call successors, (4709), 794 states have call predecessors, (4709), 794 states have return successors, (4709), 4577 states have call predecessors, (4709), 4709 states have call successors, (4709) [2025-02-06 02:15:51,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36973 states to 36973 states and 57347 transitions. [2025-02-06 02:15:51,382 INFO L78 Accepts]: Start accepts. Automaton has 36973 states and 57347 transitions. Word has length 323 [2025-02-06 02:15:51,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:51,383 INFO L471 AbstractCegarLoop]: Abstraction has 36973 states and 57347 transitions. [2025-02-06 02:15:51,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 59 states have (on average 3.9152542372881354) internal successors, (231), 56 states have internal predecessors, (231), 22 states have call successors, (147), 9 states have call predecessors, (147), 19 states have return successors, (147), 21 states have call predecessors, (147), 22 states have call successors, (147) [2025-02-06 02:15:51,384 INFO L276 IsEmpty]: Start isEmpty. Operand 36973 states and 57347 transitions. [2025-02-06 02:15:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2025-02-06 02:15:51,393 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:51,393 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:15:51,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0