./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_1+newton_2_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_1+newton_2_5.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bef70c39331e78595b45dbc9116e80e68130a83e4d55fdf4189b866d036d57fe --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 17:21:12,687 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 17:21:12,749 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 17:21:12,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 17:21:12,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 17:21:12,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 17:21:12,776 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 17:21:12,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 17:21:12,776 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 17:21:12,776 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 17:21:12,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 17:21:12,776 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 17:21:12,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 17:21:12,777 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 17:21:12,777 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 17:21:12,777 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 17:21:12,777 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 17:21:12,777 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 17:21:12,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 17:21:12,777 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 17:21:12,777 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 17:21:12,777 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 17:21:12,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 17:21:12,778 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 17:21:12,778 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 17:21:12,778 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 17:21:12,778 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 17:21:12,778 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 17:21:12,778 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 17:21:12,778 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 17:21:12,778 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 17:21:12,778 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 17:21:12,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:21:12,780 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 17:21:12,781 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 17:21:12,781 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 17:21:12,781 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 17:21:12,781 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 17:21:12,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 17:21:12,781 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 17:21:12,781 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 17:21:12,781 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 17:21:12,781 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 17:21:12,781 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 -> bef70c39331e78595b45dbc9116e80e68130a83e4d55fdf4189b866d036d57fe [2025-02-05 17:21:13,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 17:21:13,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 17:21:13,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 17:21:13,114 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 17:21:13,114 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 17:21:13,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_2_5.i [2025-02-05 17:21:14,420 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2744eeb5d/e329e728bd274318a4bf5dfc1a617011/FLAGfe73a346f [2025-02-05 17:21:14,670 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 17:21:14,671 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_2_5.i [2025-02-05 17:21:14,693 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2744eeb5d/e329e728bd274318a4bf5dfc1a617011/FLAGfe73a346f [2025-02-05 17:21:14,746 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2744eeb5d/e329e728bd274318a4bf5dfc1a617011 [2025-02-05 17:21:14,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 17:21:14,753 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 17:21:14,759 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 17:21:14,762 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 17:21:14,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 17:21:14,768 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:21:14" (1/1) ... [2025-02-05 17:21:14,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f79419e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:21:14, skipping insertion in model container [2025-02-05 17:21:14,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:21:14" (1/1) ... [2025-02-05 17:21:14,788 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 17:21:14,923 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/combinations/gcd_1+newton_2_5.i[1226,1239] [2025-02-05 17:21:14,949 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/combinations/gcd_1+newton_2_5.i[2807,2820] [2025-02-05 17:21:14,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:21:14,966 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 17:21:14,977 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/combinations/gcd_1+newton_2_5.i[1226,1239] [2025-02-05 17:21:14,987 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/combinations/gcd_1+newton_2_5.i[2807,2820] [2025-02-05 17:21:14,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:21:15,000 INFO L204 MainTranslator]: Completed translation [2025-02-05 17:21:15,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:21:15 WrapperNode [2025-02-05 17:21:15,001 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 17:21:15,002 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 17:21:15,002 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 17:21:15,002 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 17:21:15,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:21:15" (1/1) ... [2025-02-05 17:21:15,018 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:21:15" (1/1) ... [2025-02-05 17:21:15,039 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 83 [2025-02-05 17:21:15,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 17:21:15,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 17:21:15,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 17:21:15,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 17:21:15,050 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:21:15" (1/1) ... [2025-02-05 17:21:15,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:21:15" (1/1) ... [2025-02-05 17:21:15,053 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:21:15" (1/1) ... [2025-02-05 17:21:15,066 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2025-02-05 17:21:15,066 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:21:15" (1/1) ... [2025-02-05 17:21:15,066 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:21:15" (1/1) ... [2025-02-05 17:21:15,071 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:21:15" (1/1) ... [2025-02-05 17:21:15,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:21:15" (1/1) ... [2025-02-05 17:21:15,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:21:15" (1/1) ... [2025-02-05 17:21:15,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:21:15" (1/1) ... [2025-02-05 17:21:15,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 17:21:15,076 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 17:21:15,076 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 17:21:15,076 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 17:21:15,077 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:21:15" (1/1) ... [2025-02-05 17:21:15,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:21:15,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:21:15,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 17:21:15,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 17:21:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 17:21:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2025-02-05 17:21:15,139 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2025-02-05 17:21:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-02-05 17:21:15,139 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-02-05 17:21:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 17:21:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 17:21:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 17:21:15,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 17:21:15,210 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 17:21:15,212 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 17:21:15,463 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2025-02-05 17:21:15,463 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 17:21:15,474 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 17:21:15,474 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 17:21:15,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:21:15 BoogieIcfgContainer [2025-02-05 17:21:15,476 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 17:21:15,479 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 17:21:15,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 17:21:15,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 17:21:15,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 05:21:14" (1/3) ... [2025-02-05 17:21:15,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622fd606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:21:15, skipping insertion in model container [2025-02-05 17:21:15,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:21:15" (2/3) ... [2025-02-05 17:21:15,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622fd606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:21:15, skipping insertion in model container [2025-02-05 17:21:15,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:21:15" (3/3) ... [2025-02-05 17:21:15,487 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_2_5.i [2025-02-05 17:21:15,500 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 17:21:15,501 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_1+newton_2_5.i that has 3 procedures, 36 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-02-05 17:21:15,555 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 17:21:15,565 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;@53d1a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 17:21:15,566 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-05 17:21:15,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 29 states have internal predecessors, (37), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-05 17:21:15,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-05 17:21:15,576 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:21:15,576 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:21:15,577 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:21:15,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:21:15,581 INFO L85 PathProgramCache]: Analyzing trace with hash 240051161, now seen corresponding path program 1 times [2025-02-05 17:21:15,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:21:15,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400012617] [2025-02-05 17:21:15,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:21:15,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:21:15,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-05 17:21:15,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-05 17:21:15,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:21:15,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:21:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:21:15,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:21:15,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400012617] [2025-02-05 17:21:15,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400012617] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:21:15,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:21:15,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 17:21:15,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191727479] [2025-02-05 17:21:15,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:21:15,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:21:15,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:21:15,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:21:15,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:21:15,929 INFO L87 Difference]: Start difference. First operand has 36 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 29 states have internal predecessors, (37), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:21:15,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:21:15,973 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2025-02-05 17:21:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:21:15,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-05 17:21:15,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:21:15,982 INFO L225 Difference]: With dead ends: 66 [2025-02-05 17:21:15,982 INFO L226 Difference]: Without dead ends: 29 [2025-02-05 17:21:15,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:21:15,986 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:21:15,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 70 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:21:16,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-02-05 17:21:16,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-02-05 17:21:16,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-05 17:21:16,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2025-02-05 17:21:16,019 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 10 [2025-02-05 17:21:16,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:21:16,019 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2025-02-05 17:21:16,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:21:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2025-02-05 17:21:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-05 17:21:16,021 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:21:16,021 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:21:16,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 17:21:16,021 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:21:16,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:21:16,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1118734385, now seen corresponding path program 1 times [2025-02-05 17:21:16,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:21:16,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615963224] [2025-02-05 17:21:16,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:21:16,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:21:16,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-05 17:21:16,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-05 17:21:16,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:21:16,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:21:16,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:21:16,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:21:16,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615963224] [2025-02-05 17:21:16,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615963224] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:21:16,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55482438] [2025-02-05 17:21:16,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:21:16,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:21:16,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:21:16,265 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:21:16,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 17:21:16,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-05 17:21:16,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-05 17:21:16,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:21:16,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:21:16,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-05 17:21:16,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:21:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:21:16,411 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 17:21:16,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:21:16,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55482438] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 17:21:16,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 17:21:16,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2025-02-05 17:21:16,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327043173] [2025-02-05 17:21:16,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 17:21:16,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 17:21:16,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:21:16,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 17:21:16,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-05 17:21:16,460 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:21:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:21:16,522 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2025-02-05 17:21:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 17:21:16,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-02-05 17:21:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:21:16,524 INFO L225 Difference]: With dead ends: 34 [2025-02-05 17:21:16,524 INFO L226 Difference]: Without dead ends: 30 [2025-02-05 17:21:16,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-05 17:21:16,525 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:21:16,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 150 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:21:16,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-02-05 17:21:16,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2025-02-05 17:21:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-05 17:21:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2025-02-05 17:21:16,532 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2025-02-05 17:21:16,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:21:16,533 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2025-02-05 17:21:16,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:21:16,533 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2025-02-05 17:21:16,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-05 17:21:16,533 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:21:16,533 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:21:16,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 17:21:16,734 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 [2025-02-05 17:21:16,734 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:21:16,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:21:16,735 INFO L85 PathProgramCache]: Analyzing trace with hash -320042502, now seen corresponding path program 2 times [2025-02-05 17:21:16,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:21:16,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332469483] [2025-02-05 17:21:16,735 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 17:21:16,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:21:16,747 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 2 equivalence classes. [2025-02-05 17:21:16,858 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 12 of 12 statements. [2025-02-05 17:21:16,858 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 17:21:16,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 17:21:16,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403487076] [2025-02-05 17:21:16,863 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 17:21:16,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:21:16,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:21:16,866 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:21:16,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 17:21:16,906 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 2 equivalence classes. [2025-02-05 17:21:20,931 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 12 of 12 statements. [2025-02-05 17:21:20,932 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 17:21:20,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:21:20,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-05 17:21:20,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:21:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:21:28,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 17:21:45,351 WARN L286 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-02-05 17:22:36,929 WARN L286 SmtUtils]: Spent 33.09s on a formula simplification. DAG size of input: 125 DAG size of output: 122 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)