./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-4.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-4.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 64123f5116db47fa03ac4ec656265c4b4fc7f86761672b728533a9657e1ff5e6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 14:23:28,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 14:23:28,483 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 14:23:28,487 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 14:23:28,487 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 14:23:28,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 14:23:28,510 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 14:23:28,510 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 14:23:28,510 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 14:23:28,510 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 14:23:28,510 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 14:23:28,510 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 14:23:28,511 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 14:23:28,511 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 14:23:28,511 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 14:23:28,511 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 14:23:28,511 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 14:23:28,511 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 14:23:28,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 14:23:28,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 14:23:28,512 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 14:23:28,512 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 14:23:28,512 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 14:23:28,512 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 14:23:28,512 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 14:23:28,512 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 14:23:28,512 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 14:23:28,512 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 14:23:28,512 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 14:23:28,512 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:23:28,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:23:28,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:23:28,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:23:28,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 14:23:28,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:23:28,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:23:28,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:23:28,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:23:28,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 14:23:28,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 14:23:28,517 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 14:23:28,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 14:23:28,517 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 14:23:28,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 14:23:28,517 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 14:23:28,517 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 14:23:28,517 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 14:23:28,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 14:23:28,517 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 -> 64123f5116db47fa03ac4ec656265c4b4fc7f86761672b728533a9657e1ff5e6 [2025-01-09 14:23:28,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 14:23:28,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 14:23:28,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 14:23:28,712 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 14:23:28,712 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 14:23:28,712 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-4.i [2025-01-09 14:23:29,917 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/17f1a04ba/12b5c6ebbeec4f47ad7dffd5f0ee8ff6/FLAG5392ee083 [2025-01-09 14:23:30,290 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 14:23:30,290 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-4.i [2025-01-09 14:23:30,298 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/17f1a04ba/12b5c6ebbeec4f47ad7dffd5f0ee8ff6/FLAG5392ee083 [2025-01-09 14:23:30,498 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/17f1a04ba/12b5c6ebbeec4f47ad7dffd5f0ee8ff6 [2025-01-09 14:23:30,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 14:23:30,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 14:23:30,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 14:23:30,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 14:23:30,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 14:23:30,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:23:30" (1/1) ... [2025-01-09 14:23:30,505 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53da7ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:23:30, skipping insertion in model container [2025-01-09 14:23:30,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:23:30" (1/1) ... [2025-01-09 14:23:30,527 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 14:23:30,626 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-4.i[915,928] [2025-01-09 14:23:30,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:23:30,785 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 14:23:30,792 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-4.i[915,928] [2025-01-09 14:23:30,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:23:30,884 INFO L204 MainTranslator]: Completed translation [2025-01-09 14:23:30,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:23:30 WrapperNode [2025-01-09 14:23:30,886 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 14:23:30,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 14:23:30,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 14:23:30,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 14:23:30,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:23:30" (1/1) ... [2025-01-09 14:23:30,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:23:30" (1/1) ... [2025-01-09 14:23:30,956 INFO L138 Inliner]: procedures = 26, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 381 [2025-01-09 14:23:30,957 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 14:23:30,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 14:23:30,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 14:23:30,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 14:23:30,964 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:23:30" (1/1) ... [2025-01-09 14:23:30,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:23:30" (1/1) ... [2025-01-09 14:23:30,983 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:23:30" (1/1) ... [2025-01-09 14:23:31,022 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 14:23:31,023 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:23:30" (1/1) ... [2025-01-09 14:23:31,023 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:23:30" (1/1) ... [2025-01-09 14:23:31,046 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:23:30" (1/1) ... [2025-01-09 14:23:31,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:23:30" (1/1) ... [2025-01-09 14:23:31,057 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:23:30" (1/1) ... [2025-01-09 14:23:31,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:23:30" (1/1) ... [2025-01-09 14:23:31,078 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:23:30" (1/1) ... [2025-01-09 14:23:31,088 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 14:23:31,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 14:23:31,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 14:23:31,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 14:23:31,091 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:23:30" (1/1) ... [2025-01-09 14:23:31,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:23:31,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:23:31,122 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 14:23:31,125 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 14:23:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 14:23:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 14:23:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 14:23:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 14:23:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 14:23:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 14:23:31,210 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 14:23:31,212 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 14:23:31,789 INFO L? ?]: Removed 57 outVars from TransFormulas that were not future-live. [2025-01-09 14:23:31,789 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 14:23:31,800 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 14:23:31,800 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 14:23:31,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:23:31 BoogieIcfgContainer [2025-01-09 14:23:31,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 14:23:31,805 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 14:23:31,808 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 14:23:31,811 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 14:23:31,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 02:23:30" (1/3) ... [2025-01-09 14:23:31,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb49e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:23:31, skipping insertion in model container [2025-01-09 14:23:31,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:23:30" (2/3) ... [2025-01-09 14:23:31,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb49e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:23:31, skipping insertion in model container [2025-01-09 14:23:31,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:23:31" (3/3) ... [2025-01-09 14:23:31,816 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-4.i [2025-01-09 14:23:31,831 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 14:23:31,837 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-4.i that has 2 procedures, 157 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 14:23:31,880 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 14:23:31,891 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;@241aea28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 14:23:31,891 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 14:23:31,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 107 states have (on average 1.4672897196261683) internal successors, (157), 108 states have internal predecessors, (157), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2025-01-09 14:23:31,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2025-01-09 14:23:31,912 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:23:31,913 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:31,913 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:23:31,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:23:31,919 INFO L85 PathProgramCache]: Analyzing trace with hash -832934184, now seen corresponding path program 1 times [2025-01-09 14:23:31,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:23:31,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921688518] [2025-01-09 14:23:31,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:23:31,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:23:32,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-01-09 14:23:32,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-01-09 14:23:32,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:23:32,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:23:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2025-01-09 14:23:32,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:23:32,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921688518] [2025-01-09 14:23:32,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921688518] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:23:32,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010990987] [2025-01-09 14:23:32,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:23:32,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:23:32,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:23:32,431 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 14:23:32,433 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 14:23:32,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-01-09 14:23:32,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-01-09 14:23:32,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:23:32,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:23:32,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 14:23:32,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:23:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2025-01-09 14:23:32,689 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 14:23:32,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010990987] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:23:32,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:23:32,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 14:23:32,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666542840] [2025-01-09 14:23:32,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:23:32,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 14:23:32,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:23:32,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 14:23:32,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 14:23:32,718 INFO L87 Difference]: Start difference. First operand has 157 states, 107 states have (on average 1.4672897196261683) internal successors, (157), 108 states have internal predecessors, (157), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) [2025-01-09 14:23:32,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:23:32,744 INFO L93 Difference]: Finished difference Result 308 states and 544 transitions. [2025-01-09 14:23:32,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 14:23:32,746 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) Word has length 311 [2025-01-09 14:23:32,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:23:32,751 INFO L225 Difference]: With dead ends: 308 [2025-01-09 14:23:32,751 INFO L226 Difference]: Without dead ends: 154 [2025-01-09 14:23:32,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 312 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 14:23:32,756 INFO L435 NwaCegarLoop]: 246 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, 246 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 14:23:32,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:23:32,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2025-01-09 14:23:32,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2025-01-09 14:23:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 105 states have (on average 1.4476190476190476) internal successors, (152), 105 states have internal predecessors, (152), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2025-01-09 14:23:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 246 transitions. [2025-01-09 14:23:32,805 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 246 transitions. Word has length 311 [2025-01-09 14:23:32,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:23:32,805 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 246 transitions. [2025-01-09 14:23:32,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) [2025-01-09 14:23:32,805 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 246 transitions. [2025-01-09 14:23:32,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2025-01-09 14:23:32,809 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:23:32,809 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:32,817 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 14:23:33,014 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 14:23:33,015 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:23:33,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:23:33,015 INFO L85 PathProgramCache]: Analyzing trace with hash -953525786, now seen corresponding path program 1 times [2025-01-09 14:23:33,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:23:33,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063683888] [2025-01-09 14:23:33,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:23:33,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:23:33,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-01-09 14:23:33,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-01-09 14:23:33,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:23:33,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:23:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2025-01-09 14:23:33,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:23:33,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063683888] [2025-01-09 14:23:33,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063683888] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:23:33,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:23:33,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:23:33,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488648513] [2025-01-09 14:23:33,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:23:33,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:23:33,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:23:33,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:23:33,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:23:33,708 INFO L87 Difference]: Start difference. First operand 154 states and 246 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-01-09 14:23:33,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:23:33,842 INFO L93 Difference]: Finished difference Result 372 states and 593 transitions. [2025-01-09 14:23:33,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:23:33,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 311 [2025-01-09 14:23:33,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:23:33,846 INFO L225 Difference]: With dead ends: 372 [2025-01-09 14:23:33,846 INFO L226 Difference]: Without dead ends: 221 [2025-01-09 14:23:33,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 14:23:33,848 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 100 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:23:33,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 661 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 14:23:33,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2025-01-09 14:23:33,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 218. [2025-01-09 14:23:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 156 states have (on average 1.4679487179487178) internal successors, (229), 157 states have internal predecessors, (229), 59 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2025-01-09 14:23:33,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 347 transitions. [2025-01-09 14:23:33,873 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 347 transitions. Word has length 311 [2025-01-09 14:23:33,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:23:33,873 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 347 transitions. [2025-01-09 14:23:33,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-01-09 14:23:33,874 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 347 transitions. [2025-01-09 14:23:33,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2025-01-09 14:23:33,878 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:23:33,879 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:33,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 14:23:33,880 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:23:33,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:23:33,881 INFO L85 PathProgramCache]: Analyzing trace with hash 735417956, now seen corresponding path program 1 times [2025-01-09 14:23:33,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:23:33,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320400879] [2025-01-09 14:23:33,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:23:33,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:23:33,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-01-09 14:23:34,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-01-09 14:23:34,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:23:34,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:23:34,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2025-01-09 14:23:34,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:23:34,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320400879] [2025-01-09 14:23:34,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320400879] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:23:34,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:23:34,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 14:23:34,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643189893] [2025-01-09 14:23:34,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:23:34,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 14:23:34,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:23:34,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 14:23:34,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 14:23:34,672 INFO L87 Difference]: Start difference. First operand 218 states and 347 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-01-09 14:23:35,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:23:35,152 INFO L93 Difference]: Finished difference Result 531 states and 848 transitions. [2025-01-09 14:23:35,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 14:23:35,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 311 [2025-01-09 14:23:35,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:23:35,156 INFO L225 Difference]: With dead ends: 531 [2025-01-09 14:23:35,156 INFO L226 Difference]: Without dead ends: 316 [2025-01-09 14:23:35,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-01-09 14:23:35,157 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 346 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 14:23:35,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 487 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 14:23:35,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2025-01-09 14:23:35,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 232. [2025-01-09 14:23:35,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 170 states have (on average 1.4705882352941178) internal successors, (250), 171 states have internal predecessors, (250), 59 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2025-01-09 14:23:35,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 368 transitions. [2025-01-09 14:23:35,190 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 368 transitions. Word has length 311 [2025-01-09 14:23:35,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:23:35,192 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 368 transitions. [2025-01-09 14:23:35,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-01-09 14:23:35,192 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 368 transitions. [2025-01-09 14:23:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2025-01-09 14:23:35,195 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:23:35,195 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:35,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 14:23:35,196 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:23:35,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:23:35,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1437017830, now seen corresponding path program 1 times [2025-01-09 14:23:35,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:23:35,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785465704] [2025-01-09 14:23:35,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:23:35,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:23:35,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-01-09 14:23:35,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-01-09 14:23:35,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:23:35,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:23:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2025-01-09 14:23:35,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:23:35,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785465704] [2025-01-09 14:23:35,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785465704] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:23:35,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:23:35,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:23:35,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181697866] [2025-01-09 14:23:35,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:23:35,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:23:35,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:23:35,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:23:35,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:23:35,798 INFO L87 Difference]: Start difference. First operand 232 states and 368 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-01-09 14:23:36,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:23:36,039 INFO L93 Difference]: Finished difference Result 673 states and 1069 transitions. [2025-01-09 14:23:36,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:23:36,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 311 [2025-01-09 14:23:36,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:23:36,045 INFO L225 Difference]: With dead ends: 673 [2025-01-09 14:23:36,045 INFO L226 Difference]: Without dead ends: 444 [2025-01-09 14:23:36,046 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 14:23:36,047 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 204 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 14:23:36,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 718 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 14:23:36,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2025-01-09 14:23:36,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 328. [2025-01-09 14:23:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 217 states have (on average 1.4055299539170507) internal successors, (305), 218 states have internal predecessors, (305), 106 states have call successors, (106), 4 states have call predecessors, (106), 4 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2025-01-09 14:23:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 517 transitions. [2025-01-09 14:23:36,103 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 517 transitions. Word has length 311 [2025-01-09 14:23:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:23:36,105 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 517 transitions. [2025-01-09 14:23:36,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-01-09 14:23:36,105 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 517 transitions. [2025-01-09 14:23:36,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2025-01-09 14:23:36,109 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:23:36,109 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:36,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 14:23:36,109 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:23:36,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:23:36,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2096549352, now seen corresponding path program 1 times [2025-01-09 14:23:36,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:23:36,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873927200] [2025-01-09 14:23:36,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:23:36,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:23:36,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-01-09 14:23:36,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-01-09 14:23:36,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:23:36,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:23:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2025-01-09 14:23:37,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:23:37,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873927200] [2025-01-09 14:23:37,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873927200] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:23:37,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37609274] [2025-01-09 14:23:37,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:23:37,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:23:37,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:23:37,647 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 14:23:37,649 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 14:23:37,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-01-09 14:23:37,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-01-09 14:23:37,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:23:37,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:23:37,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 14:23:37,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:23:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 1718 proven. 120 refuted. 0 times theorem prover too weak. 2486 trivial. 0 not checked. [2025-01-09 14:23:38,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:23:39,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 18 proven. 120 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2025-01-09 14:23:39,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37609274] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:23:39,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:23:39,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 19 [2025-01-09 14:23:39,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681858223] [2025-01-09 14:23:39,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:23:39,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 14:23:39,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:23:39,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 14:23:39,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2025-01-09 14:23:39,274 INFO L87 Difference]: Start difference. First operand 328 states and 517 transitions. Second operand has 19 states, 19 states have (on average 10.736842105263158) internal successors, (204), 18 states have internal predecessors, (204), 7 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (135), 7 states have call predecessors, (135), 7 states have call successors, (135) [2025-01-09 14:23:40,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:23:40,948 INFO L93 Difference]: Finished difference Result 599 states and 932 transitions. [2025-01-09 14:23:40,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-09 14:23:40,948 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.736842105263158) internal successors, (204), 18 states have internal predecessors, (204), 7 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (135), 7 states have call predecessors, (135), 7 states have call successors, (135) Word has length 311 [2025-01-09 14:23:40,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:23:40,953 INFO L225 Difference]: With dead ends: 599 [2025-01-09 14:23:40,953 INFO L226 Difference]: Without dead ends: 360 [2025-01-09 14:23:40,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=417, Invalid=1305, Unknown=0, NotChecked=0, Total=1722 [2025-01-09 14:23:40,956 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 1708 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:23:40,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 1019 Invalid, 1772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-09 14:23:40,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2025-01-09 14:23:40,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 282. [2025-01-09 14:23:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 179 states have (on average 1.329608938547486) internal successors, (238), 179 states have internal predecessors, (238), 94 states have call successors, (94), 8 states have call predecessors, (94), 8 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2025-01-09 14:23:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 426 transitions. [2025-01-09 14:23:40,996 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 426 transitions. Word has length 311 [2025-01-09 14:23:40,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:23:40,998 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 426 transitions. [2025-01-09 14:23:40,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.736842105263158) internal successors, (204), 18 states have internal predecessors, (204), 7 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (135), 7 states have call predecessors, (135), 7 states have call successors, (135) [2025-01-09 14:23:40,999 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 426 transitions. [2025-01-09 14:23:41,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2025-01-09 14:23:41,003 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:23:41,004 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:41,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 14:23:41,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:23:41,205 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:23:41,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:23:41,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1689649025, now seen corresponding path program 1 times [2025-01-09 14:23:41,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:23:41,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028856589] [2025-01-09 14:23:41,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:23:41,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:23:41,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 312 statements into 1 equivalence classes. [2025-01-09 14:23:41,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 312 of 312 statements. [2025-01-09 14:23:41,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:23:41,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:23:41,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 36 proven. 102 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2025-01-09 14:23:41,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:23:41,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028856589] [2025-01-09 14:23:41,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028856589] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:23:41,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100983755] [2025-01-09 14:23:41,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:23:41,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:23:41,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:23:42,004 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 14:23:42,005 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 14:23:42,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 312 statements into 1 equivalence classes. [2025-01-09 14:23:42,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 312 of 312 statements. [2025-01-09 14:23:42,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:23:42,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:23:42,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-01-09 14:23:42,168 INFO L279 TraceCheckSpWp]: Computing forward predicates...