./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_4+newton_1_2.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_4+newton_1_2.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 65d58fd3e8c5638a351c469fc6c6b86b0bc6efe1f0f08d6df11bfe5a3616f3a3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 17:28:30,637 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 17:28:30,692 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 17:28:30,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 17:28:30,700 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 17:28:30,723 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 17:28:30,723 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 17:28:30,723 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 17:28:30,724 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 17:28:30,724 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 17:28:30,724 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 17:28:30,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 17:28:30,724 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 17:28:30,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 17:28:30,724 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 17:28:30,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 17:28:30,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 17:28:30,724 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 17:28:30,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 17:28:30,724 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 17:28:30,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 17:28:30,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 17:28:30,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 17:28:30,726 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:28:30,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 17:28:30,726 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 17:28:30,726 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 -> 65d58fd3e8c5638a351c469fc6c6b86b0bc6efe1f0f08d6df11bfe5a3616f3a3 [2025-02-05 17:28:30,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 17:28:30,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 17:28:30,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 17:28:30,981 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 17:28:30,981 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 17:28:30,982 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_2.i [2025-02-05 17:28:32,128 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b3f36ca06/83dc9085b6d24098955a610ef51e1808/FLAGe71dc2bd8 [2025-02-05 17:28:32,356 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 17:28:32,357 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i [2025-02-05 17:28:32,364 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b3f36ca06/83dc9085b6d24098955a610ef51e1808/FLAGe71dc2bd8 [2025-02-05 17:28:32,415 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b3f36ca06/83dc9085b6d24098955a610ef51e1808 [2025-02-05 17:28:32,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 17:28:32,420 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 17:28:32,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 17:28:32,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 17:28:32,425 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 17:28:32,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:28:32" (1/1) ... [2025-02-05 17:28:32,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50087bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:32, skipping insertion in model container [2025-02-05 17:28:32,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:28:32" (1/1) ... [2025-02-05 17:28:32,437 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 17:28:32,546 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_4+newton_1_2.i[1224,1237] [2025-02-05 17:28:32,571 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_4+newton_1_2.i[2806,2819] [2025-02-05 17:28:32,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:28:32,583 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 17:28:32,590 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_4+newton_1_2.i[1224,1237] [2025-02-05 17:28:32,603 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_4+newton_1_2.i[2806,2819] [2025-02-05 17:28:32,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:28:32,618 INFO L204 MainTranslator]: Completed translation [2025-02-05 17:28:32,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:32 WrapperNode [2025-02-05 17:28:32,619 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 17:28:32,620 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 17:28:32,620 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 17:28:32,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 17:28:32,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:32" (1/1) ... [2025-02-05 17:28:32,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:32" (1/1) ... [2025-02-05 17:28:32,651 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 77 [2025-02-05 17:28:32,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 17:28:32,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 17:28:32,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 17:28:32,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 17:28:32,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:32" (1/1) ... [2025-02-05 17:28:32,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:32" (1/1) ... [2025-02-05 17:28:32,664 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:32" (1/1) ... [2025-02-05 17:28:32,675 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 17:28:32,677 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:32" (1/1) ... [2025-02-05 17:28:32,677 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:32" (1/1) ... [2025-02-05 17:28:32,680 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:32" (1/1) ... [2025-02-05 17:28:32,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:32" (1/1) ... [2025-02-05 17:28:32,685 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:32" (1/1) ... [2025-02-05 17:28:32,685 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:32" (1/1) ... [2025-02-05 17:28:32,686 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 17:28:32,690 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 17:28:32,690 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 17:28:32,690 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 17:28:32,691 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:32" (1/1) ... [2025-02-05 17:28:32,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:28:32,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:28:32,715 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 17:28:32,717 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 17:28:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 17:28:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 17:28:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 17:28:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 17:28:32,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 17:28:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-05 17:28:32,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-05 17:28:32,777 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 17:28:32,778 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 17:28:32,937 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2025-02-05 17:28:32,937 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 17:28:32,943 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 17:28:32,944 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 17:28:32,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:28:32 BoogieIcfgContainer [2025-02-05 17:28:32,944 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 17:28:32,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 17:28:32,946 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 17:28:32,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 17:28:32,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 05:28:32" (1/3) ... [2025-02-05 17:28:32,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2134b6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:28:32, skipping insertion in model container [2025-02-05 17:28:32,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:32" (2/3) ... [2025-02-05 17:28:32,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2134b6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:28:32, skipping insertion in model container [2025-02-05 17:28:32,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:28:32" (3/3) ... [2025-02-05 17:28:32,951 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_2.i [2025-02-05 17:28:32,962 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 17:28:32,964 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_4+newton_1_2.i that has 2 procedures, 32 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-02-05 17:28:33,005 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 17:28:33,015 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;@6cf58d25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 17:28:33,016 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-05 17:28:33,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.44) internal successors, (36), 27 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 17:28:33,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-05 17:28:33,024 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:28:33,024 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:28:33,025 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:28:33,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:28:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1936904607, now seen corresponding path program 1 times [2025-02-05 17:28:33,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:28:33,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871668070] [2025-02-05 17:28:33,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:28:33,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:28:33,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 17:28:33,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 17:28:33,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:28:33,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:28:33,149 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 17:28:33,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:28:33,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871668070] [2025-02-05 17:28:33,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871668070] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:28:33,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:28:33,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 17:28:33,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120063989] [2025-02-05 17:28:33,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:28:33,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 17:28:33,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:28:33,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 17:28:33,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 17:28:33,172 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.44) internal successors, (36), 27 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 17:28:33,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:28:33,185 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2025-02-05 17:28:33,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 17:28:33,186 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2025-02-05 17:28:33,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:28:33,192 INFO L225 Difference]: With dead ends: 53 [2025-02-05 17:28:33,192 INFO L226 Difference]: Without dead ends: 25 [2025-02-05 17:28:33,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 17:28:33,198 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:28:33,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:28:33,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-02-05 17:28:33,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-02-05 17:28:33,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 17:28:33,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2025-02-05 17:28:33,223 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 9 [2025-02-05 17:28:33,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:28:33,225 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2025-02-05 17:28:33,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 17:28:33,226 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2025-02-05 17:28:33,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-05 17:28:33,226 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:28:33,226 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:28:33,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 17:28:33,226 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:28:33,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:28:33,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1965533758, now seen corresponding path program 1 times [2025-02-05 17:28:33,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:28:33,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605347693] [2025-02-05 17:28:33,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:28:33,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:28:33,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 17:28:33,242 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 17:28:33,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:28:33,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-05 17:28:33,244 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-05 17:28:33,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 17:28:33,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 17:28:33,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:28:33,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-05 17:28:33,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-05 17:28:33,274 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-05 17:28:33,275 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2025-02-05 17:28:33,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2025-02-05 17:28:33,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 17:28:33,279 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-05 17:28:33,290 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-05 17:28:33,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 05:28:33 BoogieIcfgContainer [2025-02-05 17:28:33,295 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-05 17:28:33,296 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-05 17:28:33,296 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-05 17:28:33,296 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-05 17:28:33,297 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:28:32" (3/4) ... [2025-02-05 17:28:33,298 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-05 17:28:33,299 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-05 17:28:33,300 INFO L158 Benchmark]: Toolchain (without parser) took 880.59ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 73.9MB in the end (delta: 49.1MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-02-05 17:28:33,301 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 117.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 17:28:33,301 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.49ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 111.3MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 17:28:33,301 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.72ms. Allocated memory is still 167.8MB. Free memory was 111.3MB in the beginning and 109.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 17:28:33,302 INFO L158 Benchmark]: Boogie Preprocessor took 35.40ms. Allocated memory is still 167.8MB. Free memory was 109.8MB in the beginning and 108.2MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 17:28:33,302 INFO L158 Benchmark]: IcfgBuilder took 254.20ms. Allocated memory is still 167.8MB. Free memory was 108.2MB in the beginning and 95.3MB in the end (delta: 12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 17:28:33,303 INFO L158 Benchmark]: TraceAbstraction took 349.42ms. Allocated memory is still 167.8MB. Free memory was 94.6MB in the beginning and 74.6MB in the end (delta: 20.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-05 17:28:33,303 INFO L158 Benchmark]: Witness Printer took 3.29ms. Allocated memory is still 167.8MB. Free memory was 74.6MB in the beginning and 73.9MB in the end (delta: 744.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 17:28:33,304 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 117.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.49ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 111.3MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.72ms. Allocated memory is still 167.8MB. Free memory was 111.3MB in the beginning and 109.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.40ms. Allocated memory is still 167.8MB. Free memory was 109.8MB in the beginning and 108.2MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 254.20ms. Allocated memory is still 167.8MB. Free memory was 108.2MB in the beginning and 95.3MB in the end (delta: 12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 349.42ms. Allocated memory is still 167.8MB. Free memory was 94.6MB in the beginning and 74.6MB in the end (delta: 20.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 3.29ms. Allocated memory is still 167.8MB. Free memory was 74.6MB in the beginning and 73.9MB in the end (delta: 744.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 109]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 87, overapproximation of someBinaryArithmeticFLOAToperation at line 100, overapproximation of someBinaryArithmeticFLOAToperation at line 92. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L82] COND FALSE !(!cond) [L98] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) [L109] reach_error() - UnprovableResult [Line: 27]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 32 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 39 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-05 17:28:33,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_4+newton_1_2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 65d58fd3e8c5638a351c469fc6c6b86b0bc6efe1f0f08d6df11bfe5a3616f3a3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 17:28:35,057 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 17:28:35,129 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-02-05 17:28:35,134 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 17:28:35,134 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 17:28:35,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 17:28:35,154 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 17:28:35,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 17:28:35,154 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 17:28:35,155 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 17:28:35,155 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 17:28:35,155 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 17:28:35,156 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 17:28:35,156 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 17:28:35,156 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 17:28:35,156 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 17:28:35,156 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 17:28:35,156 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 17:28:35,156 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 17:28:35,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 17:28:35,157 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 17:28:35,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 17:28:35,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 17:28:35,157 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-05 17:28:35,157 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-05 17:28:35,157 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-05 17:28:35,157 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 17:28:35,157 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 17:28:35,157 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 17:28:35,157 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 17:28:35,158 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 17:28:35,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 17:28:35,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 17:28:35,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 17:28:35,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:28:35,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 17:28:35,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 17:28:35,159 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 17:28:35,159 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 17:28:35,159 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-05 17:28:35,159 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-05 17:28:35,159 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 17:28:35,159 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 17:28:35,159 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 17:28:35,159 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 17:28:35,159 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 -> 65d58fd3e8c5638a351c469fc6c6b86b0bc6efe1f0f08d6df11bfe5a3616f3a3 [2025-02-05 17:28:35,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 17:28:35,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 17:28:35,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 17:28:35,397 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 17:28:35,397 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 17:28:35,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_2.i [2025-02-05 17:28:36,522 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3d31b4eea/778a98461796412b9b0ee1c12a75975e/FLAG4b79b039d [2025-02-05 17:28:36,704 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 17:28:36,704 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i [2025-02-05 17:28:36,712 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3d31b4eea/778a98461796412b9b0ee1c12a75975e/FLAG4b79b039d [2025-02-05 17:28:37,083 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3d31b4eea/778a98461796412b9b0ee1c12a75975e [2025-02-05 17:28:37,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 17:28:37,086 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 17:28:37,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 17:28:37,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 17:28:37,090 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 17:28:37,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:28:37" (1/1) ... [2025-02-05 17:28:37,091 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c1438d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:37, skipping insertion in model container [2025-02-05 17:28:37,092 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:28:37" (1/1) ... [2025-02-05 17:28:37,105 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 17:28:37,237 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_4+newton_1_2.i[1224,1237] [2025-02-05 17:28:37,265 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_4+newton_1_2.i[2806,2819] [2025-02-05 17:28:37,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:28:37,279 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 17:28:37,287 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_4+newton_1_2.i[1224,1237] [2025-02-05 17:28:37,294 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_4+newton_1_2.i[2806,2819] [2025-02-05 17:28:37,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:28:37,307 INFO L204 MainTranslator]: Completed translation [2025-02-05 17:28:37,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:37 WrapperNode [2025-02-05 17:28:37,308 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 17:28:37,309 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 17:28:37,310 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 17:28:37,310 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 17:28:37,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:37" (1/1) ... [2025-02-05 17:28:37,320 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:37" (1/1) ... [2025-02-05 17:28:37,334 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 74 [2025-02-05 17:28:37,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 17:28:37,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 17:28:37,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 17:28:37,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 17:28:37,341 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:37" (1/1) ... [2025-02-05 17:28:37,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:37" (1/1) ... [2025-02-05 17:28:37,344 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:37" (1/1) ... [2025-02-05 17:28:37,352 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 17:28:37,352 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:37" (1/1) ... [2025-02-05 17:28:37,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:37" (1/1) ... [2025-02-05 17:28:37,357 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:37" (1/1) ... [2025-02-05 17:28:37,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:37" (1/1) ... [2025-02-05 17:28:37,362 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:37" (1/1) ... [2025-02-05 17:28:37,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:37" (1/1) ... [2025-02-05 17:28:37,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 17:28:37,369 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 17:28:37,369 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 17:28:37,369 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 17:28:37,370 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:37" (1/1) ... [2025-02-05 17:28:37,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:28:37,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:28:37,406 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 17:28:37,411 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 17:28:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 17:28:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-05 17:28:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-05 17:28:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 17:28:37,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 17:28:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-05 17:28:37,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-05 17:28:37,489 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 17:28:37,491 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 17:28:47,488 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2025-02-05 17:28:47,489 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 17:28:47,494 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 17:28:47,494 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 17:28:47,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:28:47 BoogieIcfgContainer [2025-02-05 17:28:47,494 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 17:28:47,496 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 17:28:47,496 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 17:28:47,499 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 17:28:47,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 05:28:37" (1/3) ... [2025-02-05 17:28:47,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a891fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:28:47, skipping insertion in model container [2025-02-05 17:28:47,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:28:37" (2/3) ... [2025-02-05 17:28:47,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a891fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:28:47, skipping insertion in model container [2025-02-05 17:28:47,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:28:47" (3/3) ... [2025-02-05 17:28:47,501 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_2.i [2025-02-05 17:28:47,510 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 17:28:47,511 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_4+newton_1_2.i that has 2 procedures, 32 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-02-05 17:28:47,539 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 17:28:47,546 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;@792292c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 17:28:47,547 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-05 17:28:47,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.44) internal successors, (36), 27 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 17:28:47,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-05 17:28:47,552 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:28:47,553 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:28:47,553 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:28:47,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:28:47,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1936904607, now seen corresponding path program 1 times [2025-02-05 17:28:47,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-05 17:28:47,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066334150] [2025-02-05 17:28:47,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:28:47,563 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-05 17:28:47,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-05 17:28:47,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-02-05 17:28:47,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2025-02-05 17:28:47,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 17:28:48,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 17:28:48,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:28:48,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:28:48,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 17:28:48,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:28:48,431 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 17:28:48,431 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:28:48,431 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-05 17:28:48,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066334150] [2025-02-05 17:28:48,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066334150] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:28:48,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:28:48,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 17:28:48,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641530191] [2025-02-05 17:28:48,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:28:48,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 17:28:48,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-05 17:28:48,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 17:28:48,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 17:28:48,451 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.44) internal successors, (36), 27 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 17:28:48,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:28:48,467 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2025-02-05 17:28:48,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 17:28:48,469 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2025-02-05 17:28:48,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:28:48,473 INFO L225 Difference]: With dead ends: 53 [2025-02-05 17:28:48,474 INFO L226 Difference]: Without dead ends: 25 [2025-02-05 17:28:48,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 17:28:48,479 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:28:48,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:28:48,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-02-05 17:28:48,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-02-05 17:28:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 17:28:48,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2025-02-05 17:28:48,504 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 9 [2025-02-05 17:28:48,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:28:48,504 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2025-02-05 17:28:48,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 17:28:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2025-02-05 17:28:48,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-05 17:28:48,506 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:28:48,506 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:28:48,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2025-02-05 17:28:48,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-05 17:28:48,707 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:28:48,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:28:48,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1965533758, now seen corresponding path program 1 times [2025-02-05 17:28:48,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-05 17:28:48,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337056070] [2025-02-05 17:28:48,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:28:48,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-05 17:28:48,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-05 17:28:48,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-02-05 17:28:48,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2025-02-05 17:28:48,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes.