./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-52.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 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-52.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 d8dd120074dfd02f0f24e593e030890a462ca5b572edc7ca721e9637b78a3c79 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 14:25:10,761 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 14:25:10,813 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 14:25:10,820 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 14:25:10,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 14:25:10,835 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 14:25:10,835 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 14:25:10,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 14:25:10,836 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 14:25:10,836 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 14:25:10,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 14:25:10,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 14:25:10,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 14:25:10,836 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 14:25:10,836 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 14:25:10,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 14:25:10,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 14:25:10,836 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 14:25:10,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 14:25:10,837 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:25:10,837 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:25:10,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 14:25:10,837 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 14:25:10,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 14:25:10,838 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 14:25:10,838 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 14:25:10,838 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 14:25:10,838 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 14:25:10,838 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 -> d8dd120074dfd02f0f24e593e030890a462ca5b572edc7ca721e9637b78a3c79 [2025-01-09 14:25:11,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 14:25:11,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 14:25:11,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 14:25:11,084 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 14:25:11,084 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 14:25:11,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-52.i [2025-01-09 14:25:12,256 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/038c9f5d4/673df4696db64a80a186059178fdb5eb/FLAG34fa0baeb [2025-01-09 14:25:12,613 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 14:25:12,613 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-52.i [2025-01-09 14:25:12,634 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/038c9f5d4/673df4696db64a80a186059178fdb5eb/FLAG34fa0baeb [2025-01-09 14:25:12,653 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/038c9f5d4/673df4696db64a80a186059178fdb5eb [2025-01-09 14:25:12,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 14:25:12,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 14:25:12,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 14:25:12,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 14:25:12,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 14:25:12,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:25:12" (1/1) ... [2025-01-09 14:25:12,661 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a1a9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:25:12, skipping insertion in model container [2025-01-09 14:25:12,661 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:25:12" (1/1) ... [2025-01-09 14:25:12,686 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 14:25:12,801 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-52.i[916,929] [2025-01-09 14:25:12,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:25:12,936 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 14:25:12,944 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-52.i[916,929] [2025-01-09 14:25:13,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:25:13,031 INFO L204 MainTranslator]: Completed translation [2025-01-09 14:25:13,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:25:13 WrapperNode [2025-01-09 14:25:13,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 14:25:13,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 14:25:13,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 14:25:13,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 14:25:13,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:25:13" (1/1) ... [2025-01-09 14:25:13,050 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:25:13" (1/1) ... [2025-01-09 14:25:13,120 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 442 [2025-01-09 14:25:13,121 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 14:25:13,121 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 14:25:13,122 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 14:25:13,122 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 14:25:13,129 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:25:13" (1/1) ... [2025-01-09 14:25:13,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:25:13" (1/1) ... [2025-01-09 14:25:13,143 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:25:13" (1/1) ... [2025-01-09 14:25:13,189 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]. [2025-01-09 14:25:13,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:25:13" (1/1) ... [2025-01-09 14:25:13,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:25:13" (1/1) ... [2025-01-09 14:25:13,209 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:25:13" (1/1) ... [2025-01-09 14:25:13,218 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:25:13" (1/1) ... [2025-01-09 14:25:13,225 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:25:13" (1/1) ... [2025-01-09 14:25:13,234 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:25:13" (1/1) ... [2025-01-09 14:25:13,244 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:25:13" (1/1) ... [2025-01-09 14:25:13,257 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 14:25:13,258 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 14:25:13,258 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 14:25:13,258 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 14:25:13,260 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:25:13" (1/1) ... [2025-01-09 14:25:13,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:25:13,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:25:13,290 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) [2025-01-09 14:25:13,294 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 [2025-01-09 14:25:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 14:25:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 14:25:13,314 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 14:25:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 14:25:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 14:25:13,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 14:25:13,402 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 14:25:13,403 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 14:25:14,053 INFO L? ?]: Removed 52 outVars from TransFormulas that were not future-live. [2025-01-09 14:25:14,054 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 14:25:14,062 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 14:25:14,062 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 14:25:14,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:25:14 BoogieIcfgContainer [2025-01-09 14:25:14,062 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 14:25:14,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 14:25:14,064 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 14:25:14,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 14:25:14,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 02:25:12" (1/3) ... [2025-01-09 14:25:14,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25468f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:25:14, skipping insertion in model container [2025-01-09 14:25:14,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:25:13" (2/3) ... [2025-01-09 14:25:14,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25468f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:25:14, skipping insertion in model container [2025-01-09 14:25:14,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:25:14" (3/3) ... [2025-01-09 14:25:14,069 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-52.i [2025-01-09 14:25:14,079 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 14:25:14,082 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-52.i that has 2 procedures, 174 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 14:25:14,130 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 14:25:14,138 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;@78cd1014, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 14:25:14,138 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 14:25:14,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 127 states have (on average 1.4803149606299213) internal successors, (188), 128 states have internal predecessors, (188), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-01-09 14:25:14,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-01-09 14:25:14,152 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:25:14,157 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:25:14,157 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:25:14,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:25:14,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1310764597, now seen corresponding path program 1 times [2025-01-09 14:25:14,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:25:14,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915585669] [2025-01-09 14:25:14,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:25:14,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:25:14,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-01-09 14:25:14,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-01-09 14:25:14,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:25:14,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:25:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2025-01-09 14:25:14,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:25:14,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915585669] [2025-01-09 14:25:14,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915585669] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:25:14,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849896450] [2025-01-09 14:25:14,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:25:14,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:25:14,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:25:14,608 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) [2025-01-09 14:25:14,609 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 [2025-01-09 14:25:14,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-01-09 14:25:14,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-01-09 14:25:14,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:25:14,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:25:14,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 14:25:14,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:25:14,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2025-01-09 14:25:14,934 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 14:25:14,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849896450] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:25:14,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:25:14,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 14:25:14,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524516058] [2025-01-09 14:25:14,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:25:14,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 14:25:14,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:25:14,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 14:25:14,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 14:25:14,969 INFO L87 Difference]: Start difference. First operand has 174 states, 127 states have (on average 1.4803149606299213) internal successors, (188), 128 states have internal predecessors, (188), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2025-01-09 14:25:15,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:25:15,009 INFO L93 Difference]: Finished difference Result 342 states and 591 transitions. [2025-01-09 14:25:15,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 14:25:15,011 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) Word has length 300 [2025-01-09 14:25:15,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:25:15,017 INFO L225 Difference]: With dead ends: 342 [2025-01-09 14:25:15,017 INFO L226 Difference]: Without dead ends: 171 [2025-01-09 14:25:15,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 14:25:15,021 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:25:15,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:25:15,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2025-01-09 14:25:15,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2025-01-09 14:25:15,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 125 states have (on average 1.456) internal successors, (182), 125 states have internal predecessors, (182), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-01-09 14:25:15,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 270 transitions. [2025-01-09 14:25:15,060 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 270 transitions. Word has length 300 [2025-01-09 14:25:15,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:25:15,060 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 270 transitions. [2025-01-09 14:25:15,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2025-01-09 14:25:15,061 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 270 transitions. [2025-01-09 14:25:15,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-01-09 14:25:15,064 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:25:15,064 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:25:15,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 14:25:15,266 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 [2025-01-09 14:25:15,267 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:25:15,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:25:15,268 INFO L85 PathProgramCache]: Analyzing trace with hash 507922183, now seen corresponding path program 1 times [2025-01-09 14:25:15,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:25:15,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073241266] [2025-01-09 14:25:15,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:25:15,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:25:15,300 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-01-09 14:25:15,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-01-09 14:25:15,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:25:15,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:25:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-01-09 14:25:15,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:25:15,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073241266] [2025-01-09 14:25:15,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073241266] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:25:15,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:25:15,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:25:15,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764603703] [2025-01-09 14:25:15,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:25:15,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:25:15,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:25:15,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:25:15,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:25:15,581 INFO L87 Difference]: Start difference. First operand 171 states and 270 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-01-09 14:25:15,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:25:15,633 INFO L93 Difference]: Finished difference Result 419 states and 663 transitions. [2025-01-09 14:25:15,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:25:15,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 300 [2025-01-09 14:25:15,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:25:15,636 INFO L225 Difference]: With dead ends: 419 [2025-01-09 14:25:15,636 INFO L226 Difference]: Without dead ends: 251 [2025-01-09 14:25:15,637 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 [2025-01-09 14:25:15,638 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 124 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:25:15,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 632 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:25:15,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2025-01-09 14:25:15,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 242. [2025-01-09 14:25:15,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 196 states have (on average 1.5051020408163265) internal successors, (295), 196 states have internal predecessors, (295), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-01-09 14:25:15,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 383 transitions. [2025-01-09 14:25:15,652 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 383 transitions. Word has length 300 [2025-01-09 14:25:15,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:25:15,654 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 383 transitions. [2025-01-09 14:25:15,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-01-09 14:25:15,654 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 383 transitions. [2025-01-09 14:25:15,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-01-09 14:25:15,658 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:25:15,658 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:25:15,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 14:25:15,658 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:25:15,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:25:15,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1781275129, now seen corresponding path program 1 times [2025-01-09 14:25:15,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:25:15,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367367227] [2025-01-09 14:25:15,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:25:15,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:25:15,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-01-09 14:25:15,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-01-09 14:25:15,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:25:15,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:25:15,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-01-09 14:25:15,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:25:15,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367367227] [2025-01-09 14:25:15,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367367227] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:25:15,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:25:15,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:25:15,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364932332] [2025-01-09 14:25:15,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:25:15,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:25:15,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:25:15,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:25:15,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:25:15,836 INFO L87 Difference]: Start difference. First operand 242 states and 383 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-01-09 14:25:15,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:25:15,900 INFO L93 Difference]: Finished difference Result 707 states and 1120 transitions. [2025-01-09 14:25:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:25:15,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 300 [2025-01-09 14:25:15,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:25:15,904 INFO L225 Difference]: With dead ends: 707 [2025-01-09 14:25:15,904 INFO L226 Difference]: Without dead ends: 468 [2025-01-09 14:25:15,910 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 [2025-01-09 14:25:15,911 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 242 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:25:15,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 689 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:25:15,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2025-01-09 14:25:15,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 466. [2025-01-09 14:25:15,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 375 states have (on average 1.4933333333333334) internal successors, (560), 375 states have internal predecessors, (560), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-01-09 14:25:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 736 transitions. [2025-01-09 14:25:15,987 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 736 transitions. Word has length 300 [2025-01-09 14:25:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:25:15,990 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 736 transitions. [2025-01-09 14:25:15,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-01-09 14:25:15,990 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 736 transitions. [2025-01-09 14:25:15,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-01-09 14:25:15,993 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:25:15,993 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:25:15,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 14:25:15,994 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:25:15,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:25:15,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1502574917, now seen corresponding path program 1 times [2025-01-09 14:25:15,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:25:15,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205440200] [2025-01-09 14:25:15,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:25:15,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:25:16,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-01-09 14:25:16,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-01-09 14:25:16,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:25:16,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:25:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-01-09 14:25:16,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:25:16,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205440200] [2025-01-09 14:25:16,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205440200] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:25:16,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:25:16,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:25:16,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119742854] [2025-01-09 14:25:16,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:25:16,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:25:16,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:25:16,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:25:16,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:25:16,342 INFO L87 Difference]: Start difference. First operand 466 states and 736 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-01-09 14:25:16,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:25:16,406 INFO L93 Difference]: Finished difference Result 933 states and 1477 transitions. [2025-01-09 14:25:16,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:25:16,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 300 [2025-01-09 14:25:16,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:25:16,409 INFO L225 Difference]: With dead ends: 933 [2025-01-09 14:25:16,409 INFO L226 Difference]: Without dead ends: 470 [2025-01-09 14:25:16,410 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 [2025-01-09 14:25:16,414 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 0 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:25:16,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 531 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:25:16,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2025-01-09 14:25:16,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2025-01-09 14:25:16,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 379 states have (on average 1.4881266490765173) internal successors, (564), 379 states have internal predecessors, (564), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-01-09 14:25:16,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 740 transitions. [2025-01-09 14:25:16,443 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 740 transitions. Word has length 300 [2025-01-09 14:25:16,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:25:16,443 INFO L471 AbstractCegarLoop]: Abstraction has 470 states and 740 transitions. [2025-01-09 14:25:16,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-01-09 14:25:16,444 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 740 transitions. [2025-01-09 14:25:16,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2025-01-09 14:25:16,446 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:25:16,446 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:25:16,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 14:25:16,447 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:25:16,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:25:16,447 INFO L85 PathProgramCache]: Analyzing trace with hash 642135453, now seen corresponding path program 1 times [2025-01-09 14:25:16,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:25:16,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379780886] [2025-01-09 14:25:16,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:25:16,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:25:16,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-01-09 14:25:16,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-01-09 14:25:16,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:25:16,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:25:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-01-09 14:25:16,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:25:16,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379780886] [2025-01-09 14:25:16,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379780886] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:25:16,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:25:16,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:25:16,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146371855] [2025-01-09 14:25:16,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:25:16,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:25:16,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:25:16,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:25:16,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:25:16,808 INFO L87 Difference]: Start difference. First operand 470 states and 740 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-01-09 14:25:17,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:25:17,007 INFO L93 Difference]: Finished difference Result 1299 states and 2047 transitions. [2025-01-09 14:25:17,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:25:17,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 301 [2025-01-09 14:25:17,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:25:17,013 INFO L225 Difference]: With dead ends: 1299 [2025-01-09 14:25:17,013 INFO L226 Difference]: Without dead ends: 832 [2025-01-09 14:25:17,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 14:25:17,014 INFO L435 NwaCegarLoop]: 263 mSDtfsCounter, 188 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 14:25:17,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 776 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 14:25:17,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2025-01-09 14:25:17,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 692. [2025-01-09 14:25:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 556 states have (on average 1.4928057553956835) internal successors, (830), 556 states have internal predecessors, (830), 132 states have call successors, (132), 3 states have call predecessors, (132), 3 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2025-01-09 14:25:17,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1094 transitions. [2025-01-09 14:25:17,054 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1094 transitions. Word has length 301 [2025-01-09 14:25:17,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:25:17,054 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1094 transitions. [2025-01-09 14:25:17,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-01-09 14:25:17,055 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1094 transitions. [2025-01-09 14:25:17,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-01-09 14:25:17,057 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:25:17,057 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:25:17,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 14:25:17,057 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:25:17,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:25:17,058 INFO L85 PathProgramCache]: Analyzing trace with hash -689302249, now seen corresponding path program 1 times [2025-01-09 14:25:17,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:25:17,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383821432] [2025-01-09 14:25:17,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:25:17,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:25:17,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-01-09 14:25:17,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-01-09 14:25:17,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:25:17,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:25:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-01-09 14:25:17,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:25:17,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383821432] [2025-01-09 14:25:17,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383821432] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:25:17,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:25:17,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:25:17,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444919898] [2025-01-09 14:25:17,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:25:17,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:25:17,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:25:17,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:25:17,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:25:17,513 INFO L87 Difference]: Start difference. First operand 692 states and 1094 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-01-09 14:25:17,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:25:17,782 INFO L93 Difference]: Finished difference Result 1442 states and 2273 transitions. [2025-01-09 14:25:17,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:25:17,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 302 [2025-01-09 14:25:17,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:25:17,787 INFO L225 Difference]: With dead ends: 1442 [2025-01-09 14:25:17,787 INFO L226 Difference]: Without dead ends: 832 [2025-01-09 14:25:17,788 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 [2025-01-09 14:25:17,790 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 195 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 14:25:17,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 764 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 14:25:17,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2025-01-09 14:25:17,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 692. [2025-01-09 14:25:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 556 states have (on average 1.4910071942446044) internal successors, (829), 556 states have internal predecessors, (829), 132 states have call successors, (132), 3 states have call predecessors, (132), 3 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2025-01-09 14:25:17,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1093 transitions. [2025-01-09 14:25:17,842 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1093 transitions. Word has length 302 [2025-01-09 14:25:17,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:25:17,843 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1093 transitions. [2025-01-09 14:25:17,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-01-09 14:25:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1093 transitions. [2025-01-09 14:25:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2025-01-09 14:25:17,846 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:25:17,846 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:25:17,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 14:25:17,846 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:25:17,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:25:17,846 INFO L85 PathProgramCache]: Analyzing trace with hash 693995551, now seen corresponding path program 1 times [2025-01-09 14:25:17,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:25:17,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427533865] [2025-01-09 14:25:17,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:25:17,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:25:17,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 303 statements into 1 equivalence classes. [2025-01-09 14:25:18,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 303 of 303 statements. [2025-01-09 14:25:18,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:25:18,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:25:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 105 proven. 24 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-01-09 14:25:18,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:25:18,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427533865] [2025-01-09 14:25:18,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427533865] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:25:18,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844967245] [2025-01-09 14:25:18,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:25:18,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:25:18,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:25:18,710 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) [2025-01-09 14:25:18,711 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 [2025-01-09 14:25:18,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 303 statements into 1 equivalence classes. [2025-01-09 14:25:18,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 303 of 303 statements. [2025-01-09 14:25:18,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:25:18,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:25:18,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 14:25:18,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:25:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1233 proven. 24 refuted. 0 times theorem prover too weak. 2527 trivial. 0 not checked. [2025-01-09 14:25:19,461 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:25:19,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 105 proven. 24 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-01-09 14:25:19,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844967245] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:25:19,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:25:19,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 16 [2025-01-09 14:25:19,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979623514] [2025-01-09 14:25:19,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:25:19,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 14:25:19,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:25:19,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 14:25:19,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2025-01-09 14:25:19,781 INFO L87 Difference]: Start difference. First operand 692 states and 1093 transitions. Second operand has 16 states, 16 states have (on average 10.625) internal successors, (170), 16 states have internal predecessors, (170), 5 states have call successors, (96), 3 states have call predecessors, (96), 6 states have return successors, (97), 5 states have call predecessors, (97), 5 states have call successors, (97) [2025-01-09 14:25:20,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:25:20,760 INFO L93 Difference]: Finished difference Result 960 states and 1500 transitions. [2025-01-09 14:25:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 14:25:20,760 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.625) internal successors, (170), 16 states have internal predecessors, (170), 5 states have call successors, (96), 3 states have call predecessors, (96), 6 states have return successors, (97), 5 states have call predecessors, (97), 5 states have call successors, (97) Word has length 303 [2025-01-09 14:25:20,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:25:20,763 INFO L225 Difference]: With dead ends: 960 [2025-01-09 14:25:20,763 INFO L226 Difference]: Without dead ends: 427 [2025-01-09 14:25:20,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 598 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=719, Unknown=0, NotChecked=0, Total=992 [2025-01-09 14:25:20,764 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 1689 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 14:25:20,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1691 Valid, 1246 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [939 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 14:25:20,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2025-01-09 14:25:20,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 408. [2025-01-09 14:25:20,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 315 states have (on average 1.4444444444444444) internal successors, (455), 315 states have internal predecessors, (455), 88 states have call successors, (88), 4 states have call predecessors, (88), 4 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-01-09 14:25:20,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 631 transitions. [2025-01-09 14:25:20,789 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 631 transitions. Word has length 303 [2025-01-09 14:25:20,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:25:20,789 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 631 transitions. [2025-01-09 14:25:20,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.625) internal successors, (170), 16 states have internal predecessors, (170), 5 states have call successors, (96), 3 states have call predecessors, (96), 6 states have return successors, (97), 5 states have call predecessors, (97), 5 states have call successors, (97) [2025-01-09 14:25:20,789 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 631 transitions. [2025-01-09 14:25:20,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2025-01-09 14:25:20,791 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:25:20,792 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:25:20,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 14:25:20,992 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 [2025-01-09 14:25:20,993 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:25:20,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:25:20,993 INFO L85 PathProgramCache]: Analyzing trace with hash -345871197, now seen corresponding path program 1 times [2025-01-09 14:25:20,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:25:20,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212770870] [2025-01-09 14:25:20,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:25:20,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:25:21,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 303 statements into 1 equivalence classes. [2025-01-09 14:25:21,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 303 of 303 statements. [2025-01-09 14:25:21,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:25:21,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:25:21,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 117 proven. 12 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-01-09 14:25:21,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:25:21,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212770870] [2025-01-09 14:25:21,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212770870] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:25:21,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687970511] [2025-01-09 14:25:21,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:25:21,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:25:21,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:25:21,455 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) [2025-01-09 14:25:21,456 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 [2025-01-09 14:25:21,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 303 statements into 1 equivalence classes. [2025-01-09 14:25:21,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 303 of 303 statements. [2025-01-09 14:25:21,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:25:21,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:25:21,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 14:25:21,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:25:21,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 745 proven. 12 refuted. 0 times theorem prover too weak. 3027 trivial. 0 not checked. [2025-01-09 14:25:21,724 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:25:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 117 proven. 12 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-01-09 14:25:21,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687970511] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:25:21,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:25:21,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-01-09 14:25:21,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271730519] [2025-01-09 14:25:21,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:25:21,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 14:25:21,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:25:21,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 14:25:21,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-01-09 14:25:21,931 INFO L87 Difference]: Start difference. First operand 408 states and 631 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 2 states have call successors, (48), 2 states have call predecessors, (48), 4 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2025-01-09 14:25:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:25:22,198 INFO L93 Difference]: Finished difference Result 730 states and 1120 transitions. [2025-01-09 14:25:22,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 14:25:22,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 2 states have call successors, (48), 2 states have call predecessors, (48), 4 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 303 [2025-01-09 14:25:22,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:25:22,203 INFO L225 Difference]: With dead ends: 730 [2025-01-09 14:25:22,203 INFO L226 Difference]: Without dead ends: 428 [2025-01-09 14:25:22,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 603 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-01-09 14:25:22,204 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 350 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 14:25:22,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 566 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 14:25:22,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2025-01-09 14:25:22,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 416. [2025-01-09 14:25:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 321 states have (on average 1.426791277258567) internal successors, (458), 321 states have internal predecessors, (458), 88 states have call successors, (88), 6 states have call predecessors, (88), 6 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-01-09 14:25:22,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 634 transitions. [2025-01-09 14:25:22,246 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 634 transitions. Word has length 303 [2025-01-09 14:25:22,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:25:22,246 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 634 transitions. [2025-01-09 14:25:22,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 2 states have call successors, (48), 2 states have call predecessors, (48), 4 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2025-01-09 14:25:22,246 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 634 transitions. [2025-01-09 14:25:22,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2025-01-09 14:25:22,251 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:25:22,251 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:25:22,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 14:25:22,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:25:22,452 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:25:22,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:25:22,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1189876699, now seen corresponding path program 1 times [2025-01-09 14:25:22,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:25:22,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873811282] [2025-01-09 14:25:22,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:25:22,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:25:22,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 303 statements into 1 equivalence classes. [2025-01-09 14:25:22,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 303 of 303 statements. [2025-01-09 14:25:22,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:25:22,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat