./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.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-24.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 11fbe230916924754384b4d5f209e2f8e8933dc585a70287035d014e0032f60d --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 14:21:28,693 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 14:21:28,726 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 14:21:28,729 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 14:21:28,729 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 14:21:28,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 14:21:28,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 14:21:28,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 14:21:28,742 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 14:21:28,742 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 14:21:28,742 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 14:21:28,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 14:21:28,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 14:21:28,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 14:21:28,743 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 14:21:28,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 14:21:28,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 14:21:28,743 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 14:21:28,743 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 14:21:28,743 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 14:21:28,743 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 14:21:28,743 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 14:21:28,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 14:21:28,744 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 14:21:28,744 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 14:21:28,744 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 14:21:28,744 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 14:21:28,744 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 14:21:28,744 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 14:21:28,744 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:21:28,744 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:21:28,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:21:28,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:21:28,744 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 14:21:28,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:21:28,745 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:21:28,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:21:28,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:21:28,745 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 14:21:28,745 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 14:21:28,745 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 14:21:28,745 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 14:21:28,745 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 14:21:28,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 14:21:28,745 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 14:21:28,746 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 14:21:28,746 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 14:21:28,746 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 14:21:28,746 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 -> 11fbe230916924754384b4d5f209e2f8e8933dc585a70287035d014e0032f60d [2025-01-09 14:21:28,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 14:21:28,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 14:21:28,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 14:21:28,948 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 14:21:28,948 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 14:21:28,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i [2025-01-09 14:21:30,080 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0639935bd/0c52094201904a98ac6e9bfd4e9dcea6/FLAG8e993f294 [2025-01-09 14:21:30,420 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 14:21:30,421 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i [2025-01-09 14:21:30,428 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0639935bd/0c52094201904a98ac6e9bfd4e9dcea6/FLAG8e993f294 [2025-01-09 14:21:30,437 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0639935bd/0c52094201904a98ac6e9bfd4e9dcea6 [2025-01-09 14:21:30,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 14:21:30,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 14:21:30,440 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 14:21:30,440 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 14:21:30,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 14:21:30,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:21:30" (1/1) ... [2025-01-09 14:21:30,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5646d66d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:21:30, skipping insertion in model container [2025-01-09 14:21:30,444 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:21:30" (1/1) ... [2025-01-09 14:21:30,461 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 14:21:30,558 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-24.i[916,929] [2025-01-09 14:21:30,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:21:30,690 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 14:21:30,701 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-24.i[916,929] [2025-01-09 14:21:30,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:21:30,757 INFO L204 MainTranslator]: Completed translation [2025-01-09 14:21:30,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:21:30 WrapperNode [2025-01-09 14:21:30,758 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 14:21:30,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 14:21:30,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 14:21:30,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 14:21:30,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:21:30" (1/1) ... [2025-01-09 14:21:30,778 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:21:30" (1/1) ... [2025-01-09 14:21:30,814 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 429 [2025-01-09 14:21:30,819 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 14:21:30,819 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 14:21:30,819 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 14:21:30,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 14:21:30,830 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:21:30" (1/1) ... [2025-01-09 14:21:30,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:21:30" (1/1) ... [2025-01-09 14:21:30,837 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:21:30" (1/1) ... [2025-01-09 14:21:30,865 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 14:21:30,865 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:21:30" (1/1) ... [2025-01-09 14:21:30,865 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:21:30" (1/1) ... [2025-01-09 14:21:30,880 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:21:30" (1/1) ... [2025-01-09 14:21:30,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:21:30" (1/1) ... [2025-01-09 14:21:30,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:21:30" (1/1) ... [2025-01-09 14:21:30,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:21:30" (1/1) ... [2025-01-09 14:21:30,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:21:30" (1/1) ... [2025-01-09 14:21:30,899 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 14:21:30,900 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 14:21:30,901 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 14:21:30,901 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 14:21:30,902 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:21:30" (1/1) ... [2025-01-09 14:21:30,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:21:30,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:21:30,925 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 14:21:30,928 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 14:21:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 14:21:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 14:21:30,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 14:21:30,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 14:21:30,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 14:21:30,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 14:21:31,014 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 14:21:31,015 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 14:21:31,584 INFO L? ?]: Removed 63 outVars from TransFormulas that were not future-live. [2025-01-09 14:21:31,584 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 14:21:31,594 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 14:21:31,595 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 14:21:31,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:21:31 BoogieIcfgContainer [2025-01-09 14:21:31,596 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 14:21:31,598 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 14:21:31,598 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 14:21:31,601 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 14:21:31,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 02:21:30" (1/3) ... [2025-01-09 14:21:31,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35735d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:21:31, skipping insertion in model container [2025-01-09 14:21:31,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:21:30" (2/3) ... [2025-01-09 14:21:31,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35735d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:21:31, skipping insertion in model container [2025-01-09 14:21:31,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:21:31" (3/3) ... [2025-01-09 14:21:31,603 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-24.i [2025-01-09 14:21:31,613 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 14:21:31,614 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-24.i that has 2 procedures, 181 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 14:21:31,654 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 14:21:31,661 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;@da62197, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 14:21:31,661 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 14:21:31,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 134 states have (on average 1.5149253731343284) internal successors, (203), 135 states have internal predecessors, (203), 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 14:21:31,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2025-01-09 14:21:31,675 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:21:31,675 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] [2025-01-09 14:21:31,676 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:21:31,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:21:31,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1989727976, now seen corresponding path program 1 times [2025-01-09 14:21:31,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:21:31,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708091683] [2025-01-09 14:21:31,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:21:31,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:21:31,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 298 statements into 1 equivalence classes. [2025-01-09 14:21:31,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 298 of 298 statements. [2025-01-09 14:21:31,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:21:31,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:21:32,020 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 14:21:32,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:21:32,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708091683] [2025-01-09 14:21:32,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708091683] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:21:32,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850981482] [2025-01-09 14:21:32,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:21:32,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:21:32,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:21:32,025 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 14:21:32,032 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 14:21:32,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 298 statements into 1 equivalence classes. [2025-01-09 14:21:32,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 298 of 298 statements. [2025-01-09 14:21:32,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:21:32,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:21:32,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 14:21:32,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:21:32,264 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 14:21:32,265 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 14:21:32,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850981482] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:21:32,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:21:32,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 14:21:32,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855932377] [2025-01-09 14:21:32,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:21:32,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 14:21:32,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:21:32,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 14:21:32,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 14:21:32,285 INFO L87 Difference]: Start difference. First operand has 181 states, 134 states have (on average 1.5149253731343284) internal successors, (203), 135 states have internal predecessors, (203), 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 41.5) internal successors, (83), 2 states have internal predecessors, (83), 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 14:21:32,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:21:32,311 INFO L93 Difference]: Finished difference Result 356 states and 621 transitions. [2025-01-09 14:21:32,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 14:21:32,312 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 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 298 [2025-01-09 14:21:32,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:21:32,317 INFO L225 Difference]: With dead ends: 356 [2025-01-09 14:21:32,317 INFO L226 Difference]: Without dead ends: 178 [2025-01-09 14:21:32,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 299 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 14:21:32,321 INFO L435 NwaCegarLoop]: 286 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, 286 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 14:21:32,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:21:32,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-01-09 14:21:32,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2025-01-09 14:21:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 132 states have (on average 1.5) internal successors, (198), 132 states have internal predecessors, (198), 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 14:21:32,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 286 transitions. [2025-01-09 14:21:32,354 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 286 transitions. Word has length 298 [2025-01-09 14:21:32,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:21:32,355 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 286 transitions. [2025-01-09 14:21:32,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 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 14:21:32,355 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 286 transitions. [2025-01-09 14:21:32,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2025-01-09 14:21:32,358 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:21:32,358 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] [2025-01-09 14:21:32,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 14:21:32,559 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 14:21:32,560 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:21:32,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:21:32,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1560729096, now seen corresponding path program 1 times [2025-01-09 14:21:32,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:21:32,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943608968] [2025-01-09 14:21:32,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:21:32,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:21:32,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 298 statements into 1 equivalence classes. [2025-01-09 14:21:32,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 298 of 298 statements. [2025-01-09 14:21:32,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:21:32,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:21:32,941 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 14:21:32,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:21:32,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943608968] [2025-01-09 14:21:32,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943608968] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:21:32,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:21:32,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:21:32,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564331902] [2025-01-09 14:21:32,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:21:32,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:21:32,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:21:32,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:21:32,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:21:32,944 INFO L87 Difference]: Start difference. First operand 178 states and 286 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 14:21:33,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:21:33,134 INFO L93 Difference]: Finished difference Result 529 states and 853 transitions. [2025-01-09 14:21:33,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:21:33,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 298 [2025-01-09 14:21:33,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:21:33,139 INFO L225 Difference]: With dead ends: 529 [2025-01-09 14:21:33,139 INFO L226 Difference]: Without dead ends: 354 [2025-01-09 14:21:33,140 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 14:21:33,140 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 219 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:21:33,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 827 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 14:21:33,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2025-01-09 14:21:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 263. [2025-01-09 14:21:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 172 states have (on average 1.4127906976744187) internal successors, (243), 172 states have internal predecessors, (243), 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 14:21:33,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 419 transitions. [2025-01-09 14:21:33,188 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 419 transitions. Word has length 298 [2025-01-09 14:21:33,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:21:33,189 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 419 transitions. [2025-01-09 14:21:33,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 14:21:33,189 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 419 transitions. [2025-01-09 14:21:33,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2025-01-09 14:21:33,192 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:21:33,192 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] [2025-01-09 14:21:33,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 14:21:33,193 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:21:33,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:21:33,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1833848502, now seen corresponding path program 1 times [2025-01-09 14:21:33,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:21:33,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42104884] [2025-01-09 14:21:33,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:21:33,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:21:33,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 299 statements into 1 equivalence classes. [2025-01-09 14:21:33,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 299 of 299 statements. [2025-01-09 14:21:33,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:21:33,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:21:33,404 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 14:21:33,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:21:33,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42104884] [2025-01-09 14:21:33,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42104884] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:21:33,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:21:33,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:21:33,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014008449] [2025-01-09 14:21:33,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:21:33,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:21:33,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:21:33,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:21:33,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:21:33,410 INFO L87 Difference]: Start difference. First operand 263 states and 419 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 14:21:33,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:21:33,560 INFO L93 Difference]: Finished difference Result 597 states and 955 transitions. [2025-01-09 14:21:33,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:21:33,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 299 [2025-01-09 14:21:33,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:21:33,564 INFO L225 Difference]: With dead ends: 597 [2025-01-09 14:21:33,564 INFO L226 Difference]: Without dead ends: 422 [2025-01-09 14:21:33,565 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 14:21:33,566 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 248 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:21:33,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 503 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 14:21:33,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2025-01-09 14:21:33,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 318. [2025-01-09 14:21:33,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 227 states have (on average 1.4361233480176212) internal successors, (326), 227 states have internal predecessors, (326), 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 14:21:33,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 502 transitions. [2025-01-09 14:21:33,598 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 502 transitions. Word has length 299 [2025-01-09 14:21:33,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:21:33,599 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 502 transitions. [2025-01-09 14:21:33,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 14:21:33,599 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 502 transitions. [2025-01-09 14:21:33,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-01-09 14:21:33,602 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:21:33,602 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 14:21:33,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 14:21:33,602 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:21:33,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:21:33,603 INFO L85 PathProgramCache]: Analyzing trace with hash 49441681, now seen corresponding path program 1 times [2025-01-09 14:21:33,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:21:33,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950129596] [2025-01-09 14:21:33,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:21:33,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:21:33,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-01-09 14:21:33,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-01-09 14:21:33,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:21:33,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:21:33,913 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 14:21:33,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:21:33,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950129596] [2025-01-09 14:21:33,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950129596] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:21:33,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:21:33,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:21:33,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793781140] [2025-01-09 14:21:33,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:21:33,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:21:33,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:21:33,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:21:33,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:21:33,915 INFO L87 Difference]: Start difference. First operand 318 states and 502 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 14:21:33,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:21:33,934 INFO L93 Difference]: Finished difference Result 575 states and 910 transitions. [2025-01-09 14:21:33,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:21:33,935 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 14:21:33,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:21:33,937 INFO L225 Difference]: With dead ends: 575 [2025-01-09 14:21:33,937 INFO L226 Difference]: Without dead ends: 345 [2025-01-09 14:21:33,937 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 14:21:33,938 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 58 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:21:33,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 542 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:21:33,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2025-01-09 14:21:33,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 318. [2025-01-09 14:21:33,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 227 states have (on average 1.4317180616740088) internal successors, (325), 227 states have internal predecessors, (325), 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 14:21:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 501 transitions. [2025-01-09 14:21:33,973 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 501 transitions. Word has length 300 [2025-01-09 14:21:33,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:21:33,973 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 501 transitions. [2025-01-09 14:21:33,973 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 14:21:33,973 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 501 transitions. [2025-01-09 14:21:33,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-01-09 14:21:33,975 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:21:33,975 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 14:21:33,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 14:21:33,976 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:21:33,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:21:33,976 INFO L85 PathProgramCache]: Analyzing trace with hash -584407046, now seen corresponding path program 1 times [2025-01-09 14:21:33,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:21:33,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310033517] [2025-01-09 14:21:33,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:21:33,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:21:33,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-01-09 14:21:34,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-01-09 14:21:34,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:21:34,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:21:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 39 proven. 90 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-01-09 14:21:34,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:21:34,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310033517] [2025-01-09 14:21:34,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310033517] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:21:34,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387244956] [2025-01-09 14:21:34,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:21:34,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:21:34,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:21:34,916 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 14:21:34,917 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 14:21:35,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-01-09 14:21:35,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-01-09 14:21:35,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:21:35,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:21:35,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 14:21:35,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:21:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1629 proven. 90 refuted. 0 times theorem prover too weak. 2065 trivial. 0 not checked. [2025-01-09 14:21:35,714 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:21:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 39 proven. 90 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-01-09 14:21:35,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387244956] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:21:35,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:21:35,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 16 [2025-01-09 14:21:35,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128431463] [2025-01-09 14:21:35,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:21:36,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 14:21:36,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:21:36,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 14:21:36,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2025-01-09 14:21:36,001 INFO L87 Difference]: Start difference. First operand 318 states and 501 transitions. Second operand has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) [2025-01-09 14:21:36,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:21:36,777 INFO L93 Difference]: Finished difference Result 803 states and 1256 transitions. [2025-01-09 14:21:36,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 14:21:36,778 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) Word has length 300 [2025-01-09 14:21:36,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:21:36,781 INFO L225 Difference]: With dead ends: 803 [2025-01-09 14:21:36,781 INFO L226 Difference]: Without dead ends: 573 [2025-01-09 14:21:36,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2025-01-09 14:21:36,782 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1389 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 14:21:36,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1432 Valid, 1908 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 14:21:36,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2025-01-09 14:21:36,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 328. [2025-01-09 14:21:36,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 236 states have (on average 1.4322033898305084) internal successors, (338), 236 states have internal predecessors, (338), 88 states have call successors, (88), 3 states have call predecessors, (88), 3 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-01-09 14:21:36,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 514 transitions. [2025-01-09 14:21:36,864 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 514 transitions. Word has length 300 [2025-01-09 14:21:36,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:21:36,864 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 514 transitions. [2025-01-09 14:21:36,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) [2025-01-09 14:21:36,865 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 514 transitions. [2025-01-09 14:21:36,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-01-09 14:21:36,867 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:21:36,867 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 14:21:36,885 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 14:21:37,071 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 14:21:37,071 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:21:37,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:21:37,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1956214344, now seen corresponding path program 1 times [2025-01-09 14:21:37,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:21:37,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586591097] [2025-01-09 14:21:37,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:21:37,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:21:37,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-01-09 14:21:37,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-01-09 14:21:37,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:21:37,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:21:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 138 proven. 114 refuted. 0 times theorem prover too weak. 3532 trivial. 0 not checked. [2025-01-09 14:21:38,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:21:38,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586591097] [2025-01-09 14:21:38,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586591097] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:21:38,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302389295] [2025-01-09 14:21:38,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:21:38,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:21:38,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:21:38,049 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 14:21:38,051 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 14:21:38,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-01-09 14:21:38,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-01-09 14:21:38,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:21:38,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:21:38,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-09 14:21:38,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:21:39,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2056 proven. 174 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2025-01-09 14:21:39,074 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:21:40,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 306 proven. 192 refuted. 0 times theorem prover too weak. 3286 trivial. 0 not checked. [2025-01-09 14:21:40,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302389295] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:21:40,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:21:40,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 18] total 40 [2025-01-09 14:21:40,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263690601] [2025-01-09 14:21:40,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:21:40,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-01-09 14:21:40,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:21:40,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-01-09 14:21:40,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1329, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 14:21:40,379 INFO L87 Difference]: Start difference. First operand 328 states and 514 transitions. Second operand has 40 states, 36 states have (on average 5.722222222222222) internal successors, (206), 36 states have internal predecessors, (206), 14 states have call successors, (118), 5 states have call predecessors, (118), 11 states have return successors, (119), 12 states have call predecessors, (119), 14 states have call successors, (119) [2025-01-09 14:21:49,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:21:49,730 INFO L93 Difference]: Finished difference Result 1798 states and 2647 transitions. [2025-01-09 14:21:49,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2025-01-09 14:21:49,731 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 36 states have (on average 5.722222222222222) internal successors, (206), 36 states have internal predecessors, (206), 14 states have call successors, (118), 5 states have call predecessors, (118), 11 states have return successors, (119), 12 states have call predecessors, (119), 14 states have call successors, (119) Word has length 300 [2025-01-09 14:21:49,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:21:49,750 INFO L225 Difference]: With dead ends: 1798 [2025-01-09 14:21:49,751 INFO L226 Difference]: Without dead ends: 1566 [2025-01-09 14:21:49,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 592 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16212 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=6796, Invalid=37094, Unknown=0, NotChecked=0, Total=43890 [2025-01-09 14:21:49,765 INFO L435 NwaCegarLoop]: 389 mSDtfsCounter, 4536 mSDsluCounter, 5132 mSDsCounter, 0 mSdLazyCounter, 5266 mSolverCounterSat, 1260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4549 SdHoareTripleChecker+Valid, 5521 SdHoareTripleChecker+Invalid, 6526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1260 IncrementalHoareTripleChecker+Valid, 5266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-01-09 14:21:49,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4549 Valid, 5521 Invalid, 6526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1260 Valid, 5266 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-01-09 14:21:49,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2025-01-09 14:21:49,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 609. [2025-01-09 14:21:49,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 456 states have (on average 1.3903508771929824) internal successors, (634), 456 states have internal predecessors, (634), 132 states have call successors, (132), 20 states have call predecessors, (132), 20 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2025-01-09 14:21:49,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 898 transitions. [2025-01-09 14:21:49,861 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 898 transitions. Word has length 300 [2025-01-09 14:21:49,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:21:49,863 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 898 transitions. [2025-01-09 14:21:49,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 36 states have (on average 5.722222222222222) internal successors, (206), 36 states have internal predecessors, (206), 14 states have call successors, (118), 5 states have call predecessors, (118), 11 states have return successors, (119), 12 states have call predecessors, (119), 14 states have call successors, (119) [2025-01-09 14:21:49,864 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 898 transitions. [2025-01-09 14:21:49,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-01-09 14:21:49,868 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:21:49,868 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 14:21:49,884 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 14:21:50,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:21:50,069 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:21:50,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:21:50,070 INFO L85 PathProgramCache]: Analyzing trace with hash 813634288, now seen corresponding path program 1 times [2025-01-09 14:21:50,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:21:50,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508169246] [2025-01-09 14:21:50,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:21:50,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:21:50,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-01-09 14:21:50,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-01-09 14:21:50,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:21:50,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:21:50,182 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 14:21:50,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:21:50,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508169246] [2025-01-09 14:21:50,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508169246] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:21:50,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:21:50,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:21:50,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045543943] [2025-01-09 14:21:50,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:21:50,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:21:50,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:21:50,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:21:50,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:21:50,184 INFO L87 Difference]: Start difference. First operand 609 states and 898 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 14:21:50,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:21:50,302 INFO L93 Difference]: Finished difference Result 1208 states and 1796 transitions. [2025-01-09 14:21:50,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:21:50,302 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 14:21:50,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:21:50,307 INFO L225 Difference]: With dead ends: 1208 [2025-01-09 14:21:50,307 INFO L226 Difference]: Without dead ends: 729 [2025-01-09 14:21:50,309 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 14:21:50,309 INFO L435 NwaCegarLoop]: 497 mSDtfsCounter, 255 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:21:50,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 735 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 14:21:50,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2025-01-09 14:21:50,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 609. [2025-01-09 14:21:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 456 states have (on average 1.368421052631579) internal successors, (624), 456 states have internal predecessors, (624), 132 states have call successors, (132), 20 states have call predecessors, (132), 20 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2025-01-09 14:21:50,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 888 transitions. [2025-01-09 14:21:50,361 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 888 transitions. Word has length 300 [2025-01-09 14:21:50,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:21:50,362 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 888 transitions. [2025-01-09 14:21:50,362 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 14:21:50,363 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 888 transitions. [2025-01-09 14:21:50,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2025-01-09 14:21:50,366 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:21:50,366 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 14:21:50,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 14:21:50,367 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:21:50,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:21:50,367 INFO L85 PathProgramCache]: Analyzing trace with hash 598747264, now seen corresponding path program 1 times [2025-01-09 14:21:50,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:21:50,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478980100] [2025-01-09 14:21:50,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:21:50,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:21:50,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-01-09 14:21:50,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-01-09 14:21:50,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:21:50,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:21:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 51 proven. 78 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-01-09 14:21:51,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:21:51,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478980100] [2025-01-09 14:21:51,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478980100] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:21:51,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209704073] [2025-01-09 14:21:51,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:21:51,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:21:51,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:21:51,191 INFO L229 MonitoredProcess]: Starting monitored process 5 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 14:21:51,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 14:21:51,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-01-09 14:21:51,405 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-01-09 14:21:51,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:21:51,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:21:51,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-09 14:21:51,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:21:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1695 proven. 252 refuted. 0 times theorem prover too weak. 1837 trivial. 0 not checked. [2025-01-09 14:21:52,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:21:53,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209704073] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:21:53,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 14:21:53,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 23 [2025-01-09 14:21:53,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290562279] [2025-01-09 14:21:53,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 14:21:53,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 14:21:53,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:21:53,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 14:21:53,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 14:21:53,878 INFO L87 Difference]: Start difference. First operand 609 states and 888 transitions. Second operand has 23 states, 22 states have (on average 7.863636363636363) internal successors, (173), 22 states have internal predecessors, (173), 8 states have call successors, (88), 5 states have call predecessors, (88), 7 states have return successors, (88), 7 states have call predecessors, (88), 8 states have call successors, (88) [2025-01-09 14:21:57,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:21:57,787 INFO L93 Difference]: Finished difference Result 2550 states and 3698 transitions. [2025-01-09 14:21:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2025-01-09 14:21:57,788 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 7.863636363636363) internal successors, (173), 22 states have internal predecessors, (173), 8 states have call successors, (88), 5 states have call predecessors, (88), 7 states have return successors, (88), 7 states have call predecessors, (88), 8 states have call successors, (88) Word has length 301 [2025-01-09 14:21:57,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:21:57,794 INFO L225 Difference]: With dead ends: 2550 [2025-01-09 14:21:57,795 INFO L226 Difference]: Without dead ends: 2071 [2025-01-09 14:21:57,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3326 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1888, Invalid=9242, Unknown=0, NotChecked=0, Total=11130 [2025-01-09 14:21:57,799 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 2774 mSDsluCounter, 2678 mSDsCounter, 0 mSdLazyCounter, 2621 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2805 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 3256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 2621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-01-09 14:21:57,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2805 Valid, 2871 Invalid, 3256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 2621 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-01-09 14:21:57,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2025-01-09 14:21:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1522. [2025-01-09 14:21:57,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1197 states have (on average 1.3650793650793651) internal successors, (1634), 1201 states have internal predecessors, (1634), 280 states have call successors, (280), 44 states have call predecessors, (280), 44 states have return successors, (280), 276 states have call predecessors, (280), 280 states have call successors, (280) [2025-01-09 14:21:57,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2194 transitions. [2025-01-09 14:21:57,908 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2194 transitions. Word has length 301 [2025-01-09 14:21:57,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:21:57,909 INFO L471 AbstractCegarLoop]: Abstraction has 1522 states and 2194 transitions. [2025-01-09 14:21:57,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 7.863636363636363) internal successors, (173), 22 states have internal predecessors, (173), 8 states have call successors, (88), 5 states have call predecessors, (88), 7 states have return successors, (88), 7 states have call predecessors, (88), 8 states have call successors, (88) [2025-01-09 14:21:57,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2194 transitions. [2025-01-09 14:21:57,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2025-01-09 14:21:57,912 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:21:57,912 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 14:21:57,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 14:21:58,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-09 14:21:58,117 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:21:58,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:21:58,117 INFO L85 PathProgramCache]: Analyzing trace with hash -377221842, now seen corresponding path program 1 times [2025-01-09 14:21:58,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:21:58,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017641755] [2025-01-09 14:21:58,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:21:58,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:21:58,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-01-09 14:21:58,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-01-09 14:21:58,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:21:58,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:21:58,559 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 14:21:58,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:21:58,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017641755] [2025-01-09 14:21:58,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017641755] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:21:58,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:21:58,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 14:21:58,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512649367] [2025-01-09 14:21:58,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:21:58,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 14:21:58,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:21:58,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 14:21:58,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 14:21:58,560 INFO L87 Difference]: Start difference. First operand 1522 states and 2194 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 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 14:21:58,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:21:58,962 INFO L93 Difference]: Finished difference Result 3463 states and 4990 transitions. [2025-01-09 14:21:58,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 14:21:58,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 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 14:21:58,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:21:58,974 INFO L225 Difference]: With dead ends: 3463 [2025-01-09 14:21:58,974 INFO L226 Difference]: Without dead ends: 2152 [2025-01-09 14:21:58,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 14:21:58,979 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 94 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 14:21:58,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 933 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 14:21:58,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2025-01-09 14:21:59,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 2071. [2025-01-09 14:21:59,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 1697 states have (on average 1.3606364172068357) internal successors, (2309), 1709 states have internal predecessors, (2309), 320 states have call successors, (320), 53 states have call predecessors, (320), 53 states have return successors, (320), 308 states have call predecessors, (320), 320 states have call successors, (320) [2025-01-09 14:21:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2949 transitions. [2025-01-09 14:21:59,104 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2949 transitions. Word has length 301 [2025-01-09 14:21:59,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:21:59,104 INFO L471 AbstractCegarLoop]: Abstraction has 2071 states and 2949 transitions. [2025-01-09 14:21:59,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 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 14:21:59,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2949 transitions. [2025-01-09 14:21:59,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-01-09 14:21:59,107 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:21:59,107 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 14:21:59,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 14:21:59,107 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:21:59,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:21:59,108 INFO L85 PathProgramCache]: Analyzing trace with hash 803909810, now seen corresponding path program 1 times [2025-01-09 14:21:59,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:21:59,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796366946] [2025-01-09 14:21:59,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:21:59,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:21:59,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-01-09 14:21:59,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-01-09 14:21:59,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:21:59,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:22:02,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 342 proven. 243 refuted. 0 times theorem prover too weak. 3199 trivial. 0 not checked. [2025-01-09 14:22:02,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:22:02,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796366946] [2025-01-09 14:22:02,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796366946] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:22:02,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487453252] [2025-01-09 14:22:02,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:22:02,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:22:02,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:22:02,782 INFO L229 MonitoredProcess]: Starting monitored process 6 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 14:22:02,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 14:22:02,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-01-09 14:22:03,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-01-09 14:22:03,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:22:03,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:22:03,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-09 14:22:03,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:22:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2056 proven. 174 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2025-01-09 14:22:04,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:22:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 306 proven. 192 refuted. 0 times theorem prover too weak. 3286 trivial. 0 not checked. [2025-01-09 14:22:05,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487453252] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:22:05,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:22:05,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 46 [2025-01-09 14:22:05,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173508374] [2025-01-09 14:22:05,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:22:05,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-01-09 14:22:05,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:22:05,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-01-09 14:22:05,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1707, Unknown=0, NotChecked=0, Total=2070 [2025-01-09 14:22:05,509 INFO L87 Difference]: Start difference. First operand 2071 states and 2949 transitions. Second operand has 46 states, 40 states have (on average 6.0) internal successors, (240), 40 states have internal predecessors, (240), 17 states have call successors, (118), 5 states have call predecessors, (118), 11 states have return successors, (119), 15 states have call predecessors, (119), 17 states have call successors, (119) [2025-01-09 14:22:11,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:22:11,531 INFO L93 Difference]: Finished difference Result 6220 states and 8763 transitions. [2025-01-09 14:22:11,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2025-01-09 14:22:11,536 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 40 states have (on average 6.0) internal successors, (240), 40 states have internal predecessors, (240), 17 states have call successors, (118), 5 states have call predecessors, (118), 11 states have return successors, (119), 15 states have call predecessors, (119), 17 states have call successors, (119) Word has length 302 [2025-01-09 14:22:11,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:22:11,552 INFO L225 Difference]: With dead ends: 6220 [2025-01-09 14:22:11,552 INFO L226 Difference]: Without dead ends: 4495 [2025-01-09 14:22:11,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 596 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3931 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3532, Invalid=10748, Unknown=0, NotChecked=0, Total=14280 [2025-01-09 14:22:11,559 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 5243 mSDsluCounter, 2514 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 1446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5256 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 4216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1446 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-01-09 14:22:11,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5256 Valid, 2745 Invalid, 4216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1446 Valid, 2770 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-01-09 14:22:11,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4495 states. [2025-01-09 14:22:11,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4495 to 2262. [2025-01-09 14:22:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2262 states, 1894 states have (on average 1.3680042238648362) internal successors, (2591), 1905 states have internal predecessors, (2591), 311 states have call successors, (311), 56 states have call predecessors, (311), 56 states have return successors, (311), 300 states have call predecessors, (311), 311 states have call successors, (311) [2025-01-09 14:22:11,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3213 transitions. [2025-01-09 14:22:11,753 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3213 transitions. Word has length 302 [2025-01-09 14:22:11,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:22:11,754 INFO L471 AbstractCegarLoop]: Abstraction has 2262 states and 3213 transitions. [2025-01-09 14:22:11,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 40 states have (on average 6.0) internal successors, (240), 40 states have internal predecessors, (240), 17 states have call successors, (118), 5 states have call predecessors, (118), 11 states have return successors, (119), 15 states have call predecessors, (119), 17 states have call successors, (119) [2025-01-09 14:22:11,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3213 transitions. [2025-01-09 14:22:11,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-01-09 14:22:11,757 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:22:11,757 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 14:22:11,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 14:22:11,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-09 14:22:11,958 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:22:11,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:22:11,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1485502670, now seen corresponding path program 1 times [2025-01-09 14:22:11,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:22:11,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612428177] [2025-01-09 14:22:11,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:22:11,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:22:11,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-01-09 14:22:12,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-01-09 14:22:12,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:22:12,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 14:22:12,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93021819] [2025-01-09 14:22:12,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:22:12,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:22:12,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:22:12,200 INFO L229 MonitoredProcess]: Starting monitored process 7 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 14:22:12,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 14:22:12,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-01-09 14:22:12,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-01-09 14:22:12,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:22:12,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:22:12,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 77 conjuncts are in the unsatisfiable core [2025-01-09 14:22:12,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:22:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2273 proven. 534 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2025-01-09 14:22:15,589 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:22:41,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:22:41,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612428177] [2025-01-09 14:22:41,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 14:22:41,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93021819] [2025-01-09 14:22:41,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93021819] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:22:41,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:22:41,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2025-01-09 14:22:41,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267841665] [2025-01-09 14:22:41,109 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 14:22:41,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-01-09 14:22:41,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:22:41,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-01-09 14:22:41,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=549, Invalid=2757, Unknown=0, NotChecked=0, Total=3306 [2025-01-09 14:22:41,110 INFO L87 Difference]: Start difference. First operand 2262 states and 3213 transitions. Second operand has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 34 states have internal predecessors, (124), 10 states have call successors, (44), 10 states have call predecessors, (44), 14 states have return successors, (44), 10 states have call predecessors, (44), 10 states have call successors, (44) [2025-01-09 14:22:47,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:22:47,578 INFO L93 Difference]: Finished difference Result 5505 states and 7781 transitions. [2025-01-09 14:22:47,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-01-09 14:22:47,578 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 34 states have internal predecessors, (124), 10 states have call successors, (44), 10 states have call predecessors, (44), 14 states have return successors, (44), 10 states have call predecessors, (44), 10 states have call successors, (44) Word has length 302 [2025-01-09 14:22:47,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:22:47,605 INFO L225 Difference]: With dead ends: 5505 [2025-01-09 14:22:47,605 INFO L226 Difference]: Without dead ends: 3424 [2025-01-09 14:22:47,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2884 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=1900, Invalid=8606, Unknown=0, NotChecked=0, Total=10506 [2025-01-09 14:22:47,615 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 1427 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 2767 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:22:47,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 3291 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2767 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-01-09 14:22:47,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3424 states. [2025-01-09 14:22:47,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3424 to 2321. [2025-01-09 14:22:47,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2321 states, 1955 states have (on average 1.3667519181585677) internal successors, (2672), 1965 states have internal predecessors, (2672), 306 states have call successors, (306), 59 states have call predecessors, (306), 59 states have return successors, (306), 296 states have call predecessors, (306), 306 states have call successors, (306) [2025-01-09 14:22:47,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3284 transitions. [2025-01-09 14:22:47,828 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3284 transitions. Word has length 302 [2025-01-09 14:22:47,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:22:47,828 INFO L471 AbstractCegarLoop]: Abstraction has 2321 states and 3284 transitions. [2025-01-09 14:22:47,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.1794871794871793) internal successors, (124), 34 states have internal predecessors, (124), 10 states have call successors, (44), 10 states have call predecessors, (44), 14 states have return successors, (44), 10 states have call predecessors, (44), 10 states have call successors, (44) [2025-01-09 14:22:47,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3284 transitions. [2025-01-09 14:22:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-01-09 14:22:47,831 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:22:47,831 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 14:22:47,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 14:22:48,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-09 14:22:48,032 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:22:48,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:22:48,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1462870416, now seen corresponding path program 1 times [2025-01-09 14:22:48,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:22:48,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818495671] [2025-01-09 14:22:48,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:22:48,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:22:48,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-01-09 14:22:48,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-01-09 14:22:48,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:22:48,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:22:48,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 33 proven. 96 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-01-09 14:22:48,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:22:48,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818495671] [2025-01-09 14:22:48,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818495671] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:22:48,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524796650] [2025-01-09 14:22:48,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:22:48,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:22:48,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:22:48,441 INFO L229 MonitoredProcess]: Starting monitored process 8 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 14:22:48,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 14:22:48,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-01-09 14:22:48,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-01-09 14:22:48,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:22:48,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:22:48,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 14:22:48,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:22:49,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1473 proven. 96 refuted. 0 times theorem prover too weak. 2215 trivial. 0 not checked. [2025-01-09 14:22:49,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:22:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 33 proven. 96 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-01-09 14:22:49,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524796650] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:22:49,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:22:49,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 16 [2025-01-09 14:22:49,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13023392] [2025-01-09 14:22:49,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:22:49,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 14:22:49,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:22:49,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 14:22:49,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2025-01-09 14:22:49,340 INFO L87 Difference]: Start difference. First operand 2321 states and 3284 transitions. Second operand has 16 states, 15 states have (on average 10.666666666666666) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 4 states have call predecessors, (132), 5 states have call successors, (132) [2025-01-09 14:22:50,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:22:50,501 INFO L93 Difference]: Finished difference Result 7731 states and 10974 transitions. [2025-01-09 14:22:50,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 14:22:50,501 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 10.666666666666666) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 4 states have call predecessors, (132), 5 states have call successors, (132) Word has length 302 [2025-01-09 14:22:50,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:22:50,517 INFO L225 Difference]: With dead ends: 7731 [2025-01-09 14:22:50,517 INFO L226 Difference]: Without dead ends: 5766 [2025-01-09 14:22:50,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2025-01-09 14:22:50,520 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 555 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 14:22:50,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1838 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 14:22:50,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5766 states. [2025-01-09 14:22:50,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5766 to 4404. [2025-01-09 14:22:50,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4404 states, 3724 states have (on average 1.3619763694951665) internal successors, (5072), 3744 states have internal predecessors, (5072), 568 states have call successors, (568), 111 states have call predecessors, (568), 111 states have return successors, (568), 548 states have call predecessors, (568), 568 states have call successors, (568) [2025-01-09 14:22:50,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4404 states to 4404 states and 6208 transitions. [2025-01-09 14:22:50,843 INFO L78 Accepts]: Start accepts. Automaton has 4404 states and 6208 transitions. Word has length 302 [2025-01-09 14:22:50,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:22:50,843 INFO L471 AbstractCegarLoop]: Abstraction has 4404 states and 6208 transitions. [2025-01-09 14:22:50,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 10.666666666666666) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 4 states have call predecessors, (132), 5 states have call successors, (132) [2025-01-09 14:22:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 4404 states and 6208 transitions. [2025-01-09 14:22:50,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-01-09 14:22:50,852 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:22:50,852 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 14:22:50,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 14:22:51,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:22:51,053 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:22:51,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:22:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash -67311845, now seen corresponding path program 1 times [2025-01-09 14:22:51,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:22:51,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784565188] [2025-01-09 14:22:51,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:22:51,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:22:51,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-01-09 14:22:51,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-01-09 14:22:51,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:22:51,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 14:22:51,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506509716] [2025-01-09 14:22:51,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:22:51,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:22:51,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:22:51,525 INFO L229 MonitoredProcess]: Starting monitored process 9 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 14:22:51,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 14:22:51,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-01-09 14:22:51,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-01-09 14:22:51,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:22:51,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:22:51,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-01-09 14:22:51,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:22:54,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2232 proven. 450 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2025-01-09 14:22:54,209 INFO L312 TraceCheckSpWp]: Computing backward predicates...