./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_3.c --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/float-benchs/zonotope_3.c -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 c1619194307da84227512f62eb582bffd66266544ce804bd80ee6a40fe157ac7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 00:57:41,579 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 00:57:41,615 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 00:57:41,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 00:57:41,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 00:57:41,634 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 00:57:41,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 00:57:41,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 00:57:41,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 00:57:41,635 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 00:57:41,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 00:57:41,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 00:57:41,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 00:57:41,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 00:57:41,635 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 00:57:41,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 00:57:41,636 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 00:57:41,636 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 00:57:41,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 00:57:41,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 00:57:41,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 00:57:41,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 00:57:41,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 00:57:41,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 00:57:41,636 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 00:57:41,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 00:57:41,636 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 00:57:41,636 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 00:57:41,636 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 00:57:41,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 00:57:41,636 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 00:57:41,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 00:57:41,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 00:57:41,637 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 00:57:41,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 00:57:41,637 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 00:57:41,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 00:57:41,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 00:57:41,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 00:57:41,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 00:57:41,637 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 00:57:41,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 00:57:41,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 00:57:41,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 00:57:41,637 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 00:57:41,637 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 00:57:41,637 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 00:57:41,637 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 00:57:41,637 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 -> c1619194307da84227512f62eb582bffd66266544ce804bd80ee6a40fe157ac7 [2025-01-09 00:57:41,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 00:57:41,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 00:57:41,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 00:57:41,894 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 00:57:41,894 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 00:57:41,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_3.c [2025-01-09 00:57:43,068 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5588249f5/256f6d0f9a054e108183058087c4a6af/FLAG1f2780669 [2025-01-09 00:57:43,325 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 00:57:43,326 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c [2025-01-09 00:57:43,331 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5588249f5/256f6d0f9a054e108183058087c4a6af/FLAG1f2780669 [2025-01-09 00:57:43,650 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5588249f5/256f6d0f9a054e108183058087c4a6af [2025-01-09 00:57:43,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 00:57:43,653 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 00:57:43,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 00:57:43,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 00:57:43,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 00:57:43,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 12:57:43" (1/1) ... [2025-01-09 00:57:43,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b122b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:57:43, skipping insertion in model container [2025-01-09 00:57:43,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 12:57:43" (1/1) ... [2025-01-09 00:57:43,673 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 00:57:43,767 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/float-benchs/zonotope_3.c[604,617] [2025-01-09 00:57:43,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 00:57:43,783 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 00:57:43,790 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/float-benchs/zonotope_3.c[604,617] [2025-01-09 00:57:43,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 00:57:43,803 INFO L204 MainTranslator]: Completed translation [2025-01-09 00:57:43,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:57:43 WrapperNode [2025-01-09 00:57:43,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 00:57:43,805 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 00:57:43,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 00:57:43,805 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 00:57:43,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:57:43" (1/1) ... [2025-01-09 00:57:43,814 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:57:43" (1/1) ... [2025-01-09 00:57:43,824 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2025-01-09 00:57:43,825 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 00:57:43,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 00:57:43,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 00:57:43,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 00:57:43,831 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:57:43" (1/1) ... [2025-01-09 00:57:43,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:57:43" (1/1) ... [2025-01-09 00:57:43,833 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:57:43" (1/1) ... [2025-01-09 00:57:43,841 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 00:57:43,842 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:57:43" (1/1) ... [2025-01-09 00:57:43,843 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:57:43" (1/1) ... [2025-01-09 00:57:43,845 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:57:43" (1/1) ... [2025-01-09 00:57:43,848 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:57:43" (1/1) ... [2025-01-09 00:57:43,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:57:43" (1/1) ... [2025-01-09 00:57:43,850 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:57:43" (1/1) ... [2025-01-09 00:57:43,855 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:57:43" (1/1) ... [2025-01-09 00:57:43,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 00:57:43,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 00:57:43,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 00:57:43,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 00:57:43,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:57:43" (1/1) ... [2025-01-09 00:57:43,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 00:57:43,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 00:57:43,882 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 00:57:43,886 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 00:57:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 00:57:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-01-09 00:57:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-01-09 00:57:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure g [2025-01-09 00:57:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2025-01-09 00:57:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 00:57:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 00:57:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 00:57:43,951 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 00:57:43,952 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 00:57:44,033 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-01-09 00:57:44,034 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 00:57:44,039 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 00:57:44,040 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 00:57:44,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 12:57:44 BoogieIcfgContainer [2025-01-09 00:57:44,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 00:57:44,042 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 00:57:44,042 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 00:57:44,045 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 00:57:44,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 12:57:43" (1/3) ... [2025-01-09 00:57:44,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727a64f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 12:57:44, skipping insertion in model container [2025-01-09 00:57:44,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 12:57:43" (2/3) ... [2025-01-09 00:57:44,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727a64f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 12:57:44, skipping insertion in model container [2025-01-09 00:57:44,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 12:57:44" (3/3) ... [2025-01-09 00:57:44,047 INFO L128 eAbstractionObserver]: Analyzing ICFG zonotope_3.c [2025-01-09 00:57:44,057 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 00:57:44,058 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG zonotope_3.c that has 3 procedures, 34 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 00:57:44,089 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 00:57:44,097 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;@1ed86543, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 00:57:44,097 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 00:57:44,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 00:57:44,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 00:57:44,103 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 00:57:44,103 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 00:57:44,104 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 00:57:44,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 00:57:44,107 INFO L85 PathProgramCache]: Analyzing trace with hash 924528894, now seen corresponding path program 1 times [2025-01-09 00:57:44,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 00:57:44,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681381027] [2025-01-09 00:57:44,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 00:57:44,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 00:57:44,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 00:57:44,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 00:57:44,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 00:57:44,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 00:57:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 00:57:44,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 00:57:44,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681381027] [2025-01-09 00:57:44,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681381027] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 00:57:44,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 00:57:44,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 00:57:44,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761911345] [2025-01-09 00:57:44,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 00:57:44,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 00:57:44,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 00:57:44,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 00:57:44,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 00:57:44,288 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-01-09 00:57:44,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 00:57:44,317 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2025-01-09 00:57:44,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 00:57:44,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2025-01-09 00:57:44,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 00:57:44,322 INFO L225 Difference]: With dead ends: 69 [2025-01-09 00:57:44,323 INFO L226 Difference]: Without dead ends: 41 [2025-01-09 00:57:44,324 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 00:57:44,326 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 00:57:44,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 00:57:44,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-01-09 00:57:44,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2025-01-09 00:57:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 00:57:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2025-01-09 00:57:44,350 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 25 [2025-01-09 00:57:44,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 00:57:44,350 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2025-01-09 00:57:44,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-01-09 00:57:44,350 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2025-01-09 00:57:44,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-01-09 00:57:44,351 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 00:57:44,351 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:57:44,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 00:57:44,352 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 00:57:44,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 00:57:44,352 INFO L85 PathProgramCache]: Analyzing trace with hash -921480460, now seen corresponding path program 1 times [2025-01-09 00:57:44,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 00:57:44,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778679262] [2025-01-09 00:57:44,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 00:57:44,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 00:57:44,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-01-09 00:57:44,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-01-09 00:57:44,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 00:57:44,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 00:57:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-01-09 00:57:44,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 00:57:44,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778679262] [2025-01-09 00:57:44,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778679262] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 00:57:44,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54969354] [2025-01-09 00:57:44,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 00:57:44,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 00:57:44,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 00:57:44,470 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 00:57:44,472 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 00:57:44,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-01-09 00:57:44,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-01-09 00:57:44,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 00:57:44,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 00:57:44,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 00:57:44,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 00:57:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-01-09 00:57:44,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 00:57:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-01-09 00:57:44,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54969354] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 00:57:44,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 00:57:44,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-09 00:57:44,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136411629] [2025-01-09 00:57:44,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 00:57:44,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 00:57:44,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 00:57:44,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 00:57:44,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-09 00:57:44,646 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 00:57:44,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 00:57:44,701 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2025-01-09 00:57:44,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 00:57:44,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 48 [2025-01-09 00:57:44,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 00:57:44,703 INFO L225 Difference]: With dead ends: 67 [2025-01-09 00:57:44,703 INFO L226 Difference]: Without dead ends: 64 [2025-01-09 00:57:44,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-09 00:57:44,704 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 00:57:44,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 93 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 00:57:44,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-01-09 00:57:44,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2025-01-09 00:57:44,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-01-09 00:57:44,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2025-01-09 00:57:44,711 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 48 [2025-01-09 00:57:44,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 00:57:44,711 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2025-01-09 00:57:44,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 00:57:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2025-01-09 00:57:44,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-01-09 00:57:44,713 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 00:57:44,714 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 00:57:44,720 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 00:57:44,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 00:57:44,918 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 00:57:44,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 00:57:44,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1671047298, now seen corresponding path program 2 times [2025-01-09 00:57:44,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 00:57:44,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147217737] [2025-01-09 00:57:44,919 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 00:57:44,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 00:57:44,933 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 117 statements into 2 equivalence classes. [2025-01-09 00:57:44,945 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 117 of 117 statements. [2025-01-09 00:57:44,945 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 00:57:44,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 00:57:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-01-09 00:57:45,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 00:57:45,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147217737] [2025-01-09 00:57:45,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147217737] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 00:57:45,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152791576] [2025-01-09 00:57:45,085 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 00:57:45,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 00:57:45,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 00:57:45,087 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 00:57:45,088 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 00:57:45,145 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 117 statements into 2 equivalence classes. [2025-01-09 00:57:45,188 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 117 of 117 statements. [2025-01-09 00:57:45,189 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 00:57:45,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 00:57:45,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 00:57:45,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 00:57:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-01-09 00:57:45,295 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 00:57:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-01-09 00:57:45,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152791576] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 00:57:45,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 00:57:45,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-09 00:57:45,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112244032] [2025-01-09 00:57:45,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 00:57:45,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 00:57:45,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 00:57:45,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 00:57:45,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-01-09 00:57:45,442 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2025-01-09 00:57:45,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 00:57:45,538 INFO L93 Difference]: Finished difference Result 133 states and 180 transitions. [2025-01-09 00:57:45,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 00:57:45,538 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 117 [2025-01-09 00:57:45,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 00:57:45,540 INFO L225 Difference]: With dead ends: 133 [2025-01-09 00:57:45,540 INFO L226 Difference]: Without dead ends: 130 [2025-01-09 00:57:45,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-01-09 00:57:45,540 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 00:57:45,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 123 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 00:57:45,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-01-09 00:57:45,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2025-01-09 00:57:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 83 states have (on average 1.0120481927710843) internal successors, (84), 83 states have internal predecessors, (84), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-01-09 00:57:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 172 transitions. [2025-01-09 00:57:45,563 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 172 transitions. Word has length 117 [2025-01-09 00:57:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 00:57:45,563 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 172 transitions. [2025-01-09 00:57:45,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2025-01-09 00:57:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 172 transitions. [2025-01-09 00:57:45,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2025-01-09 00:57:45,568 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 00:57:45,568 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 00:57:45,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 00:57:45,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 00:57:45,772 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 00:57:45,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 00:57:45,773 INFO L85 PathProgramCache]: Analyzing trace with hash 584395070, now seen corresponding path program 3 times [2025-01-09 00:57:45,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 00:57:45,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700815570] [2025-01-09 00:57:45,773 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 00:57:45,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 00:57:45,791 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 255 statements into 18 equivalence classes. [2025-01-09 00:57:45,841 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) and asserted 245 of 255 statements. [2025-01-09 00:57:45,842 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2025-01-09 00:57:45,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 00:57:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2025-01-09 00:57:46,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 00:57:46,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700815570] [2025-01-09 00:57:46,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700815570] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 00:57:46,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924108946] [2025-01-09 00:57:46,136 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 00:57:46,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 00:57:46,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 00:57:46,139 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 00:57:46,140 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 00:57:46,223 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 255 statements into 18 equivalence classes. [2025-01-09 00:57:46,289 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) and asserted 245 of 255 statements. [2025-01-09 00:57:46,289 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2025-01-09 00:57:46,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 00:57:46,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 00:57:46,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 00:57:46,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2025-01-09 00:57:46,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 00:57:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2025-01-09 00:57:46,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924108946] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 00:57:46,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 00:57:46,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-01-09 00:57:46,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268814055] [2025-01-09 00:57:46,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 00:57:46,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-09 00:57:46,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 00:57:46,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-09 00:57:46,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-01-09 00:57:46,792 INFO L87 Difference]: Start difference. First operand 130 states and 172 transitions. Second operand has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) [2025-01-09 00:57:46,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 00:57:46,963 INFO L93 Difference]: Finished difference Result 265 states and 366 transitions. [2025-01-09 00:57:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-09 00:57:46,963 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) Word has length 255 [2025-01-09 00:57:46,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 00:57:46,966 INFO L225 Difference]: With dead ends: 265 [2025-01-09 00:57:46,966 INFO L226 Difference]: Without dead ends: 262 [2025-01-09 00:57:46,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-01-09 00:57:46,967 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 00:57:46,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 205 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 00:57:46,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2025-01-09 00:57:46,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2025-01-09 00:57:46,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 167 states have (on average 1.0059880239520957) internal successors, (168), 167 states have internal predecessors, (168), 92 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2025-01-09 00:57:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 352 transitions. [2025-01-09 00:57:46,983 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 352 transitions. Word has length 255 [2025-01-09 00:57:46,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 00:57:46,984 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 352 transitions. [2025-01-09 00:57:46,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) [2025-01-09 00:57:46,984 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 352 transitions. [2025-01-09 00:57:46,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2025-01-09 00:57:46,990 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 00:57:46,990 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 00:57:46,996 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 00:57:47,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 00:57:47,194 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 00:57:47,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 00:57:47,195 INFO L85 PathProgramCache]: Analyzing trace with hash 240794814, now seen corresponding path program 4 times [2025-01-09 00:57:47,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 00:57:47,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595708678] [2025-01-09 00:57:47,195 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 00:57:47,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 00:57:47,245 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 531 statements into 2 equivalence classes. [2025-01-09 00:57:47,270 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 531 of 531 statements. [2025-01-09 00:57:47,270 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 00:57:47,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 00:57:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8773 backedges. 0 proven. 2563 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2025-01-09 00:57:48,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 00:57:48,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595708678] [2025-01-09 00:57:48,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595708678] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 00:57:48,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936446625] [2025-01-09 00:57:48,333 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 00:57:48,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 00:57:48,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 00:57:48,338 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 00:57:48,341 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 00:57:48,432 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 531 statements into 2 equivalence classes. [2025-01-09 00:57:48,524 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 531 of 531 statements. [2025-01-09 00:57:48,525 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 00:57:48,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 00:57:48,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 00:57:48,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 00:57:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 8773 backedges. 0 proven. 2563 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2025-01-09 00:57:48,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 00:57:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 8773 backedges. 0 proven. 2563 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2025-01-09 00:57:49,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936446625] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 00:57:49,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 00:57:49,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2025-01-09 00:57:49,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272433388] [2025-01-09 00:57:49,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 00:57:49,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-01-09 00:57:49,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 00:57:49,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-01-09 00:57:49,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-01-09 00:57:49,901 INFO L87 Difference]: Start difference. First operand 262 states and 352 transitions. Second operand has 48 states, 48 states have (on average 6.729166666666667) internal successors, (323), 48 states have internal predecessors, (323), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) [2025-01-09 00:57:50,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 00:57:50,269 INFO L93 Difference]: Finished difference Result 529 states and 738 transitions. [2025-01-09 00:57:50,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-01-09 00:57:50,270 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.729166666666667) internal successors, (323), 48 states have internal predecessors, (323), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) Word has length 531 [2025-01-09 00:57:50,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 00:57:50,273 INFO L225 Difference]: With dead ends: 529 [2025-01-09 00:57:50,273 INFO L226 Difference]: Without dead ends: 526 [2025-01-09 00:57:50,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1085 GetRequests, 1039 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-01-09 00:57:50,275 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 00:57:50,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 347 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 00:57:50,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2025-01-09 00:57:50,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2025-01-09 00:57:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 335 states have (on average 1.0029850746268656) internal successors, (336), 335 states have internal predecessors, (336), 188 states have call successors, (188), 2 states have call predecessors, (188), 2 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2025-01-09 00:57:50,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 712 transitions. [2025-01-09 00:57:50,333 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 712 transitions. Word has length 531 [2025-01-09 00:57:50,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 00:57:50,334 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 712 transitions. [2025-01-09 00:57:50,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.729166666666667) internal successors, (323), 48 states have internal predecessors, (323), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) [2025-01-09 00:57:50,334 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 712 transitions. [2025-01-09 00:57:50,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1084 [2025-01-09 00:57:50,350 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 00:57:50,350 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 00:57:50,360 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 00:57:50,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 00:57:50,555 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 00:57:50,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 00:57:50,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2106467262, now seen corresponding path program 5 times [2025-01-09 00:57:50,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 00:57:50,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720567791] [2025-01-09 00:57:50,556 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 00:57:50,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 00:57:50,602 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1083 statements into 74 equivalence classes. [2025-01-09 00:57:50,746 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) and asserted 1083 of 1083 statements. [2025-01-09 00:57:50,746 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2025-01-09 00:57:50,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 00:57:54,088 INFO L134 CoverageAnalysis]: Checked inductivity of 37657 backedges. 0 proven. 11431 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2025-01-09 00:57:54,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 00:57:54,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720567791] [2025-01-09 00:57:54,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720567791] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 00:57:54,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626796988] [2025-01-09 00:57:54,088 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 00:57:54,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 00:57:54,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 00:57:54,096 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 00:57:54,098 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 00:57:54,319 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1083 statements into 74 equivalence classes. [2025-01-09 00:57:54,668 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) and asserted 1083 of 1083 statements. [2025-01-09 00:57:54,668 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2025-01-09 00:57:54,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 00:57:54,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 2376 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-01-09 00:57:54,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 00:57:55,166 INFO L134 CoverageAnalysis]: Checked inductivity of 37657 backedges. 0 proven. 11431 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2025-01-09 00:57:55,166 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 00:57:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 37657 backedges. 0 proven. 11431 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2025-01-09 00:57:57,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626796988] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 00:57:57,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 00:57:57,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2025-01-09 00:57:57,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671102812] [2025-01-09 00:57:57,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 00:57:57,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-01-09 00:57:57,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 00:57:57,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-01-09 00:57:57,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-01-09 00:57:57,998 INFO L87 Difference]: Start difference. First operand 526 states and 712 transitions. Second operand has 96 states, 96 states have (on average 6.864583333333333) internal successors, (659), 96 states have internal predecessors, (659), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) [2025-01-09 00:57:58,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 00:57:58,946 INFO L93 Difference]: Finished difference Result 1057 states and 1482 transitions. [2025-01-09 00:57:58,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-01-09 00:57:58,947 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 6.864583333333333) internal successors, (659), 96 states have internal predecessors, (659), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) Word has length 1083 [2025-01-09 00:57:58,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 00:57:58,959 INFO L225 Difference]: With dead ends: 1057 [2025-01-09 00:57:58,963 INFO L226 Difference]: Without dead ends: 1054 [2025-01-09 00:57:58,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2213 GetRequests, 2119 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-01-09 00:57:58,967 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 00:57:58,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 631 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 00:57:58,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2025-01-09 00:57:59,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1054. [2025-01-09 00:57:59,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 671 states have (on average 1.0014903129657229) internal successors, (672), 671 states have internal predecessors, (672), 380 states have call successors, (380), 2 states have call predecessors, (380), 2 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2025-01-09 00:57:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1432 transitions. [2025-01-09 00:57:59,014 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1432 transitions. Word has length 1083 [2025-01-09 00:57:59,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 00:57:59,015 INFO L471 AbstractCegarLoop]: Abstraction has 1054 states and 1432 transitions. [2025-01-09 00:57:59,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 6.864583333333333) internal successors, (659), 96 states have internal predecessors, (659), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) [2025-01-09 00:57:59,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1432 transitions. [2025-01-09 00:57:59,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2188 [2025-01-09 00:57:59,057 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 00:57:59,057 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 00:57:59,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 00:57:59,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 00:57:59,258 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 00:57:59,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 00:57:59,259 INFO L85 PathProgramCache]: Analyzing trace with hash 287109566, now seen corresponding path program 6 times [2025-01-09 00:57:59,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 00:57:59,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766501138] [2025-01-09 00:57:59,259 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 00:57:59,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 00:57:59,375 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 2187 statements into 148 equivalence classes. [2025-01-09 00:57:59,647 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) and asserted 2177 of 2187 statements. [2025-01-09 00:57:59,647 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) [2025-01-09 00:57:59,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 00:58:14,472 INFO L134 CoverageAnalysis]: Checked inductivity of 155905 backedges. 0 proven. 48175 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2025-01-09 00:58:14,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 00:58:14,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766501138] [2025-01-09 00:58:14,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766501138] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 00:58:14,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336818649] [2025-01-09 00:58:14,473 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 00:58:14,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 00:58:14,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 00:58:14,477 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 00:58:14,478 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 00:58:14,849 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 2187 statements into 148 equivalence classes. [2025-01-09 00:58:16,059 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) and asserted 2177 of 2187 statements. [2025-01-09 00:58:16,059 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) [2025-01-09 00:58:16,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 00:58:16,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 4754 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-01-09 00:58:16,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 00:58:17,054 INFO L134 CoverageAnalysis]: Checked inductivity of 155905 backedges. 0 proven. 48175 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2025-01-09 00:58:17,054 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 00:58:26,383 INFO L134 CoverageAnalysis]: Checked inductivity of 155905 backedges. 0 proven. 48175 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2025-01-09 00:58:26,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336818649] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 00:58:26,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 00:58:26,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2025-01-09 00:58:26,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360736919] [2025-01-09 00:58:26,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 00:58:26,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-01-09 00:58:26,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 00:58:26,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-01-09 00:58:26,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-01-09 00:58:26,405 INFO L87 Difference]: Start difference. First operand 1054 states and 1432 transitions. Second operand has 193 states, 193 states have (on average 6.937823834196891) internal successors, (1339), 193 states have internal predecessors, (1339), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) [2025-01-09 00:58:29,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 00:58:29,428 INFO L93 Difference]: Finished difference Result 2113 states and 2970 transitions. [2025-01-09 00:58:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-01-09 00:58:29,430 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 6.937823834196891) internal successors, (1339), 193 states have internal predecessors, (1339), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) Word has length 2187 [2025-01-09 00:58:29,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 00:58:29,440 INFO L225 Difference]: With dead ends: 2113 [2025-01-09 00:58:29,440 INFO L226 Difference]: Without dead ends: 2110 [2025-01-09 00:58:29,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4469 GetRequests, 4278 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-01-09 00:58:29,444 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-01-09 00:58:29,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1067 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-01-09 00:58:29,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2025-01-09 00:58:29,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2110. [2025-01-09 00:58:29,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 1343 states have (on average 1.0007446016381236) internal successors, (1344), 1343 states have internal predecessors, (1344), 764 states have call successors, (764), 2 states have call predecessors, (764), 2 states have return successors, (764), 764 states have call predecessors, (764), 764 states have call successors, (764) [2025-01-09 00:58:29,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 2872 transitions. [2025-01-09 00:58:29,497 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 2872 transitions. Word has length 2187 [2025-01-09 00:58:29,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 00:58:29,500 INFO L471 AbstractCegarLoop]: Abstraction has 2110 states and 2872 transitions. [2025-01-09 00:58:29,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 6.937823834196891) internal successors, (1339), 193 states have internal predecessors, (1339), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) [2025-01-09 00:58:29,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 2872 transitions. [2025-01-09 00:58:29,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4396 [2025-01-09 00:58:29,572 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 00:58:29,573 INFO L218 NwaCegarLoop]: trace histogram [382, 382, 382, 382, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 00:58:29,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 00:58:29,776 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,SelfDestructingSolverStorable6 [2025-01-09 00:58:29,777 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 00:58:29,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 00:58:29,778 INFO L85 PathProgramCache]: Analyzing trace with hash 819367358, now seen corresponding path program 7 times [2025-01-09 00:58:29,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 00:58:29,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479520601] [2025-01-09 00:58:29,779 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 00:58:29,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 00:58:29,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4395 statements into 1 equivalence classes. [2025-01-09 00:58:30,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4395 of 4395 statements. [2025-01-09 00:58:30,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 00:58:30,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat