./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_2+newton_3_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_2+newton_3_4.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 e8259989f7570bf558987b7e4c2e7f61d77e5fd2d99fcc8a9ebe16670ccb62e9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:25:45,486 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:25:45,552 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:25:45,556 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:25:45,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:25:45,588 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:25:45,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:25:45,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:25:45,591 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:25:45,593 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:25:45,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:25:45,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:25:45,594 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:25:45,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:25:45,596 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:25:45,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:25:45,597 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:25:45,597 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:25:45,597 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:25:45,597 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:25:45,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:25:45,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:25:45,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:25:45,602 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:25:45,602 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:25:45,602 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:25:45,602 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:25:45,602 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:25:45,603 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:25:45,603 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:25:45,603 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:25:45,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:25:45,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:25:45,604 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:25:45,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:25:45,604 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:25:45,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:25:45,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:25:45,605 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:25:45,605 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:25:45,605 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:25:45,606 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:25:45,606 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8259989f7570bf558987b7e4c2e7f61d77e5fd2d99fcc8a9ebe16670ccb62e9 [2024-11-16 09:25:45,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:25:45,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:25:45,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:25:45,929 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:25:45,930 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:25:45,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_3_4.i [2024-11-16 09:25:47,271 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:25:47,489 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:25:47,490 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i [2024-11-16 09:25:47,501 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc57b162a/20b4122b7a2c4f948cfbaf0d0430385a/FLAG949db0bc0 [2024-11-16 09:25:47,519 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc57b162a/20b4122b7a2c4f948cfbaf0d0430385a [2024-11-16 09:25:47,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:25:47,532 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:25:47,535 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:25:47,535 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:25:47,541 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:25:47,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:25:47" (1/1) ... [2024-11-16 09:25:47,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b15b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:25:47, skipping insertion in model container [2024-11-16 09:25:47,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:25:47" (1/1) ... [2024-11-16 09:25:47,566 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:25:47,755 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[1226,1239] [2024-11-16 09:25:47,795 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[2862,2875] [2024-11-16 09:25:47,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:25:47,811 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:25:47,825 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[1226,1239] [2024-11-16 09:25:47,844 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[2862,2875] [2024-11-16 09:25:47,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:25:47,866 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:25:47,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:25:47 WrapperNode [2024-11-16 09:25:47,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:25:47,868 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:25:47,868 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:25:47,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:25:47,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:25:47" (1/1) ... [2024-11-16 09:25:47,887 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:25:47" (1/1) ... [2024-11-16 09:25:47,912 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 90 [2024-11-16 09:25:47,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:25:47,914 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:25:47,915 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:25:47,915 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:25:47,923 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:25:47" (1/1) ... [2024-11-16 09:25:47,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:25:47" (1/1) ... [2024-11-16 09:25:47,927 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:25:47" (1/1) ... [2024-11-16 09:25:47,944 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]. [2024-11-16 09:25:47,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:25:47" (1/1) ... [2024-11-16 09:25:47,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:25:47" (1/1) ... [2024-11-16 09:25:47,951 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:25:47" (1/1) ... [2024-11-16 09:25:47,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:25:47" (1/1) ... [2024-11-16 09:25:47,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:25:47" (1/1) ... [2024-11-16 09:25:47,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:25:47" (1/1) ... [2024-11-16 09:25:47,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:25:47,956 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:25:47,956 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:25:47,956 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:25:47,957 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:25:47" (1/1) ... [2024-11-16 09:25:47,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:25:47,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:25:47,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 09:25:47,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 09:25:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:25:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-16 09:25:48,043 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-16 09:25:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-16 09:25:48,044 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-16 09:25:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:25:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 09:25:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:25:48,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:25:48,123 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:25:48,126 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:25:48,392 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-16 09:25:48,393 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:25:48,413 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:25:48,414 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:25:48,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:25:48 BoogieIcfgContainer [2024-11-16 09:25:48,419 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:25:48,421 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:25:48,421 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:25:48,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:25:48,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:25:47" (1/3) ... [2024-11-16 09:25:48,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@499bcbca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:25:48, skipping insertion in model container [2024-11-16 09:25:48,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:25:47" (2/3) ... [2024-11-16 09:25:48,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@499bcbca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:25:48, skipping insertion in model container [2024-11-16 09:25:48,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:25:48" (3/3) ... [2024-11-16 09:25:48,430 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_4.i [2024-11-16 09:25:48,471 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:25:48,472 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:25:48,543 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:25:48,550 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;@67608bf7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:25:48,551 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:25:48,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 32 states have (on average 1.34375) internal successors, (43), 34 states have internal predecessors, (43), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 09:25:48,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-16 09:25:48,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:25:48,562 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:25:48,563 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:25:48,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:25:48,569 INFO L85 PathProgramCache]: Analyzing trace with hash 357406328, now seen corresponding path program 1 times [2024-11-16 09:25:48,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:25:48,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613970538] [2024-11-16 09:25:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:25:48,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:25:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:25:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:25:48,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:25:48,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613970538] [2024-11-16 09:25:48,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613970538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:25:48,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:25:48,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 09:25:48,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578830302] [2024-11-16 09:25:48,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:25:48,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 09:25:48,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:25:48,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 09:25:48,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 09:25:48,791 INFO L87 Difference]: Start difference. First operand has 43 states, 32 states have (on average 1.34375) internal successors, (43), 34 states have internal predecessors, (43), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-16 09:25:48,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:25:48,807 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2024-11-16 09:25:48,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 09:25:48,809 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2024-11-16 09:25:48,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:25:48,815 INFO L225 Difference]: With dead ends: 77 [2024-11-16 09:25:48,815 INFO L226 Difference]: Without dead ends: 34 [2024-11-16 09:25:48,819 INFO L431 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 [2024-11-16 09:25:48,822 INFO L432 NwaCegarLoop]: 50 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, 50 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 [2024-11-16 09:25:48,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:25:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-16 09:25:48,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-16 09:25:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 09:25:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2024-11-16 09:25:48,856 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 12 [2024-11-16 09:25:48,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:25:48,856 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2024-11-16 09:25:48,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-16 09:25:48,857 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2024-11-16 09:25:48,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 09:25:48,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:25:48,858 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:25:48,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:25:48,859 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:25:48,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:25:48,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1713942765, now seen corresponding path program 1 times [2024-11-16 09:25:48,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:25:48,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40337613] [2024-11-16 09:25:48,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:25:48,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:25:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:25:49,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:25:49,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:25:49,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40337613] [2024-11-16 09:25:49,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40337613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:25:49,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:25:49,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 09:25:49,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307751221] [2024-11-16 09:25:49,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:25:49,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 09:25:49,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:25:49,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 09:25:49,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 09:25:49,036 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2024-11-16 09:25:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:25:49,066 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2024-11-16 09:25:49,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 09:25:49,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 13 [2024-11-16 09:25:49,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:25:49,067 INFO L225 Difference]: With dead ends: 45 [2024-11-16 09:25:49,068 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 09:25:49,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 09:25:49,069 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:25:49,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 104 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:25:49,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 09:25:49,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-16 09:25:49,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 09:25:49,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-16 09:25:49,077 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 13 [2024-11-16 09:25:49,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:25:49,077 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-16 09:25:49,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2024-11-16 09:25:49,078 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-16 09:25:49,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 09:25:49,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:25:49,078 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:25:49,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:25:49,079 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:25:49,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:25:49,079 INFO L85 PathProgramCache]: Analyzing trace with hash 773570068, now seen corresponding path program 1 times [2024-11-16 09:25:49,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:25:49,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774017832] [2024-11-16 09:25:49,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:25:49,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:25:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:25:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:25:49,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:25:49,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774017832] [2024-11-16 09:25:49,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774017832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:25:49,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:25:49,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 09:25:49,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915325922] [2024-11-16 09:25:49,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:25:49,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 09:25:49,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:25:49,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 09:25:49,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 09:25:49,182 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2024-11-16 09:25:49,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:25:49,207 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-11-16 09:25:49,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 09:25:49,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 13 [2024-11-16 09:25:49,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:25:49,209 INFO L225 Difference]: With dead ends: 43 [2024-11-16 09:25:49,209 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 09:25:49,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 09:25:49,211 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:25:49,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 102 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:25:49,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 09:25:49,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-16 09:25:49,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 09:25:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-16 09:25:49,221 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 13 [2024-11-16 09:25:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:25:49,222 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-16 09:25:49,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2024-11-16 09:25:49,222 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-16 09:25:49,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 09:25:49,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:25:49,223 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:25:49,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:25:49,223 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:25:49,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:25:49,224 INFO L85 PathProgramCache]: Analyzing trace with hash 549018355, now seen corresponding path program 1 times [2024-11-16 09:25:49,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:25:49,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763161634] [2024-11-16 09:25:49,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:25:49,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:25:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:25:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:25:49,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:25:49,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763161634] [2024-11-16 09:25:49,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763161634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:25:49,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280098095] [2024-11-16 09:25:49,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:25:49,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:25:49,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:25:49,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:25:49,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 09:25:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:25:49,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 09:25:49,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:25:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:25:49,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:25:49,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:25:49,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280098095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:25:49,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:25:49,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-11-16 09:25:49,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325283361] [2024-11-16 09:25:49,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:25:49,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 09:25:49,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:25:49,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 09:25:49,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:25:49,737 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2024-11-16 09:25:49,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:25:49,843 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-11-16 09:25:49,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:25:49,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 15 [2024-11-16 09:25:49,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:25:49,847 INFO L225 Difference]: With dead ends: 45 [2024-11-16 09:25:49,847 INFO L226 Difference]: Without dead ends: 38 [2024-11-16 09:25:49,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:25:49,848 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:25:49,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 232 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:25:49,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-16 09:25:49,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-16 09:25:49,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 29 states have internal predecessors, (31), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 09:25:49,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-11-16 09:25:49,856 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 15 [2024-11-16 09:25:49,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:25:49,857 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-11-16 09:25:49,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2024-11-16 09:25:49,857 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-11-16 09:25:49,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-16 09:25:49,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:25:49,858 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:25:49,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 09:25:50,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:25:50,063 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:25:50,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:25:50,064 INFO L85 PathProgramCache]: Analyzing trace with hash -496813038, now seen corresponding path program 2 times [2024-11-16 09:25:50,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:25:50,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100397744] [2024-11-16 09:25:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:25:50,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:25:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:25:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:25:50,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:25:50,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100397744] [2024-11-16 09:25:50,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100397744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:25:50,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329559866] [2024-11-16 09:25:50,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 09:25:50,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:25:50,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:25:50,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:25:50,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 09:25:50,570 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 09:25:50,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 09:25:50,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 09:25:50,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:26:29,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-16 09:26:29,721 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-16 09:26:29,723 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-16 09:26:29,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 09:26:29,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:26:29,924 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:947) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:553) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:290) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2024-11-16 09:26:29,928 INFO L158 Benchmark]: Toolchain (without parser) took 42395.99ms. Allocated memory was 176.2MB in the beginning and 222.3MB in the end (delta: 46.1MB). Free memory was 149.4MB in the beginning and 120.0MB in the end (delta: 29.4MB). Peak memory consumption was 75.0MB. Max. memory is 16.1GB. [2024-11-16 09:26:29,928 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 09:26:29,929 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.73ms. Allocated memory is still 176.2MB. Free memory was 149.4MB in the beginning and 135.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 09:26:29,929 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.88ms. Allocated memory is still 176.2MB. Free memory was 135.8MB in the beginning and 134.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 09:26:29,930 INFO L158 Benchmark]: Boogie Preprocessor took 41.22ms. Allocated memory is still 176.2MB. Free memory was 134.7MB in the beginning and 132.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 09:26:29,931 INFO L158 Benchmark]: IcfgBuilder took 463.41ms. Allocated memory is still 176.2MB. Free memory was 131.6MB in the beginning and 146.2MB in the end (delta: -14.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-16 09:26:29,931 INFO L158 Benchmark]: TraceAbstraction took 41506.20ms. Allocated memory was 176.2MB in the beginning and 222.3MB in the end (delta: 46.1MB). Free memory was 145.2MB in the beginning and 120.0MB in the end (delta: 25.2MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. [2024-11-16 09:26:29,933 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.73ms. Allocated memory is still 176.2MB. Free memory was 149.4MB in the beginning and 135.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.88ms. Allocated memory is still 176.2MB. Free memory was 135.8MB in the beginning and 134.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.22ms. Allocated memory is still 176.2MB. Free memory was 134.7MB in the beginning and 132.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 463.41ms. Allocated memory is still 176.2MB. Free memory was 131.6MB in the beginning and 146.2MB in the end (delta: -14.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 41506.20ms. Allocated memory was 176.2MB in the beginning and 222.3MB in the end (delta: 46.1MB). Free memory was 145.2MB in the beginning and 120.0MB in the end (delta: 25.2MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_2+newton_3_4.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 e8259989f7570bf558987b7e4c2e7f61d77e5fd2d99fcc8a9ebe16670ccb62e9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:26:31,894 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:26:31,970 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-16 09:26:31,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:26:31,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:26:32,007 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:26:32,008 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:26:32,008 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:26:32,008 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:26:32,009 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:26:32,009 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:26:32,009 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:26:32,010 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:26:32,012 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:26:32,012 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:26:32,013 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:26:32,013 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:26:32,013 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:26:32,014 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:26:32,014 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:26:32,014 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:26:32,015 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:26:32,015 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:26:32,015 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-16 09:26:32,016 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-16 09:26:32,016 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:26:32,016 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-16 09:26:32,017 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:26:32,017 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:26:32,017 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:26:32,018 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:26:32,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:26:32,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:26:32,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:26:32,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:26:32,019 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:26:32,020 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:26:32,021 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:26:32,021 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-16 09:26:32,021 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-16 09:26:32,021 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:26:32,021 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:26:32,022 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:26:32,022 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:26:32,022 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8259989f7570bf558987b7e4c2e7f61d77e5fd2d99fcc8a9ebe16670ccb62e9 [2024-11-16 09:26:32,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:26:32,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:26:32,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:26:32,365 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:26:32,367 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:26:32,369 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_3_4.i [2024-11-16 09:26:33,951 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:26:34,157 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:26:34,158 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i [2024-11-16 09:26:34,165 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/719ca094a/ccf4760c55084b57b3f1358661f56d2a/FLAG6fd23f244 [2024-11-16 09:26:34,528 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/719ca094a/ccf4760c55084b57b3f1358661f56d2a [2024-11-16 09:26:34,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:26:34,532 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:26:34,533 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:26:34,533 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:26:34,538 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:26:34,539 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:26:34" (1/1) ... [2024-11-16 09:26:34,540 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5778f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:26:34, skipping insertion in model container [2024-11-16 09:26:34,540 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:26:34" (1/1) ... [2024-11-16 09:26:34,559 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:26:34,775 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[1226,1239] [2024-11-16 09:26:34,812 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[2862,2875] [2024-11-16 09:26:34,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:26:34,829 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:26:34,844 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[1226,1239] [2024-11-16 09:26:34,861 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[2862,2875] [2024-11-16 09:26:34,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:26:34,887 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:26:34,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:26:34 WrapperNode [2024-11-16 09:26:34,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:26:34,890 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:26:34,890 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:26:34,890 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:26:34,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:26:34" (1/1) ... [2024-11-16 09:26:34,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:26:34" (1/1) ... [2024-11-16 09:26:34,935 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2024-11-16 09:26:34,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:26:34,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:26:34,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:26:34,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:26:34,948 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:26:34" (1/1) ... [2024-11-16 09:26:34,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:26:34" (1/1) ... [2024-11-16 09:26:34,951 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:26:34" (1/1) ... [2024-11-16 09:26:34,970 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]. [2024-11-16 09:26:34,971 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:26:34" (1/1) ... [2024-11-16 09:26:34,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:26:34" (1/1) ... [2024-11-16 09:26:34,983 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:26:34" (1/1) ... [2024-11-16 09:26:34,983 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:26:34" (1/1) ... [2024-11-16 09:26:34,985 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:26:34" (1/1) ... [2024-11-16 09:26:34,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:26:34" (1/1) ... [2024-11-16 09:26:34,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:26:34,997 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:26:34,997 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:26:34,997 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:26:34,998 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:26:34" (1/1) ... [2024-11-16 09:26:35,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:26:35,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:26:35,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 09:26:35,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 09:26:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:26:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-16 09:26:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-16 09:26:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-16 09:26:35,084 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-16 09:26:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-16 09:26:35,084 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-16 09:26:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:26:35,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:26:35,174 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:26:35,176 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:26:48,677 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-16 09:26:48,677 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:26:48,688 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:26:48,688 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:26:48,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:26:48 BoogieIcfgContainer [2024-11-16 09:26:48,688 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:26:48,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:26:48,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:26:48,694 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:26:48,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:26:34" (1/3) ... [2024-11-16 09:26:48,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e520c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:26:48, skipping insertion in model container [2024-11-16 09:26:48,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:26:34" (2/3) ... [2024-11-16 09:26:48,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e520c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:26:48, skipping insertion in model container [2024-11-16 09:26:48,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:26:48" (3/3) ... [2024-11-16 09:26:48,697 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_4.i [2024-11-16 09:26:48,717 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:26:48,717 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:26:48,763 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:26:48,769 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;@661b07e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:26:48,770 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:26:48,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 32 states have (on average 1.34375) internal successors, (43), 34 states have internal predecessors, (43), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 09:26:48,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-16 09:26:48,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:26:48,783 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:26:48,784 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:26:48,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:26:48,790 INFO L85 PathProgramCache]: Analyzing trace with hash 357406328, now seen corresponding path program 1 times [2024-11-16 09:26:48,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 09:26:48,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171424015] [2024-11-16 09:26:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:26:48,804 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 [2024-11-16 09:26:48,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 09:26:48,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/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) [2024-11-16 09:26:48,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-11-16 09:26:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:26:48,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-16 09:26:48,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:26:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:26:48,887 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:26:48,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-16 09:26:48,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171424015] [2024-11-16 09:26:48,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171424015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:26:48,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:26:48,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 09:26:48,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811309489] [2024-11-16 09:26:48,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:26:48,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 09:26:48,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-16 09:26:48,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 09:26:48,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 09:26:48,913 INFO L87 Difference]: Start difference. First operand has 43 states, 32 states have (on average 1.34375) internal successors, (43), 34 states have internal predecessors, (43), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-16 09:26:48,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:26:48,931 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2024-11-16 09:26:48,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 09:26:48,932 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2024-11-16 09:26:48,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:26:48,938 INFO L225 Difference]: With dead ends: 77 [2024-11-16 09:26:48,938 INFO L226 Difference]: Without dead ends: 34 [2024-11-16 09:26:48,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 09:26:48,943 INFO L432 NwaCegarLoop]: 50 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, 50 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 [2024-11-16 09:26:48,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:26:48,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-16 09:26:48,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-16 09:26:48,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 09:26:48,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2024-11-16 09:26:48,975 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 12 [2024-11-16 09:26:48,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:26:48,976 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2024-11-16 09:26:48,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-16 09:26:48,977 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2024-11-16 09:26:48,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 09:26:48,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:26:48,979 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:26:48,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-11-16 09:26:49,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/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 [2024-11-16 09:26:49,180 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:26:49,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:26:49,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1713942765, now seen corresponding path program 1 times [2024-11-16 09:26:49,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 09:26:49,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540418420] [2024-11-16 09:26:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:26:49,182 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 [2024-11-16 09:26:49,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 09:26:49,184 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/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) [2024-11-16 09:26:49,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-11-16 09:26:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:26:49,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 09:26:49,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:26:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:26:49,551 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:26:49,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-16 09:26:49,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540418420] [2024-11-16 09:26:49,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540418420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:26:49,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:26:49,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:26:49,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194563738] [2024-11-16 09:26:49,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:26:49,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:26:49,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-16 09:26:49,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:26:49,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:26:49,557 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2024-11-16 09:26:49,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:26:49,653 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-11-16 09:26:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:26:49,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2024-11-16 09:26:49,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:26:49,655 INFO L225 Difference]: With dead ends: 43 [2024-11-16 09:26:49,655 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 09:26:49,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:26:49,657 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:26:49,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:26:49,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 09:26:49,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-16 09:26:49,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 09:26:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-16 09:26:49,666 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 13 [2024-11-16 09:26:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:26:49,667 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-16 09:26:49,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2024-11-16 09:26:49,667 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-16 09:26:49,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 09:26:49,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:26:49,668 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:26:49,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/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)] Forceful destruction successful, exit code 0 [2024-11-16 09:26:49,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/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 [2024-11-16 09:26:49,871 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:26:49,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:26:49,872 INFO L85 PathProgramCache]: Analyzing trace with hash 773570068, now seen corresponding path program 1 times [2024-11-16 09:26:49,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 09:26:49,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255588329] [2024-11-16 09:26:49,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:26:49,873 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 [2024-11-16 09:26:49,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 09:26:49,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/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) [2024-11-16 09:26:49,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 (4)] Waiting until timeout for monitored process [2024-11-16 09:26:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:26:49,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 09:26:49,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:26:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:26:50,198 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:26:50,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-16 09:26:50,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255588329] [2024-11-16 09:26:50,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255588329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:26:50,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:26:50,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 09:26:50,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632675875] [2024-11-16 09:26:50,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:26:50,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 09:26:50,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-16 09:26:50,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 09:26:50,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 09:26:50,200 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2024-11-16 09:26:50,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:26:50,417 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2024-11-16 09:26:50,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 09:26:50,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 13 [2024-11-16 09:26:50,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:26:50,421 INFO L225 Difference]: With dead ends: 45 [2024-11-16 09:26:50,422 INFO L226 Difference]: Without dead ends: 38 [2024-11-16 09:26:50,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 09:26:50,423 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:26:50,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 106 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 09:26:50,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-16 09:26:50,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-16 09:26:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 09:26:50,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-16 09:26:50,438 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 13 [2024-11-16 09:26:50,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:26:50,438 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-16 09:26:50,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2024-11-16 09:26:50,439 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-16 09:26:50,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 09:26:50,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:26:50,440 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:26:50,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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 (4)] Ended with exit code 0 [2024-11-16 09:26:50,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/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 [2024-11-16 09:26:50,641 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:26:50,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:26:50,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1948997582, now seen corresponding path program 1 times [2024-11-16 09:26:50,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 09:26:50,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497472249] [2024-11-16 09:26:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:26:50,642 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 [2024-11-16 09:26:50,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 09:26:50,645 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/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) [2024-11-16 09:26:50,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 (5)] Waiting until timeout for monitored process [2024-11-16 09:26:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:26:50,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 09:26:50,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:26:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 09:26:51,022 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:26:51,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-16 09:26:51,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497472249] [2024-11-16 09:26:51,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497472249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:26:51,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:26:51,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 09:26:51,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078118388] [2024-11-16 09:26:51,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:26:51,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 09:26:51,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-16 09:26:51,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 09:26:51,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 09:26:51,027 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-16 09:26:51,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:26:51,200 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2024-11-16 09:26:51,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 09:26:51,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 15 [2024-11-16 09:26:51,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:26:51,202 INFO L225 Difference]: With dead ends: 47 [2024-11-16 09:26:51,203 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 09:26:51,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 09:26:51,204 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:26:51,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 105 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 09:26:51,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 09:26:51,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-16 09:26:51,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 09:26:51,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-16 09:26:51,211 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 15 [2024-11-16 09:26:51,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:26:51,211 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-16 09:26:51,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-16 09:26:51,212 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-16 09:26:51,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 09:26:51,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:26:51,212 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:26:51,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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 (5)] Ended with exit code 0 [2024-11-16 09:26:51,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/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 [2024-11-16 09:26:51,413 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:26:51,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:26:51,414 INFO L85 PathProgramCache]: Analyzing trace with hash 549018355, now seen corresponding path program 1 times [2024-11-16 09:26:51,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 09:26:51,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551687824] [2024-11-16 09:26:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:26:51,414 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 [2024-11-16 09:26:51,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 09:26:51,418 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/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) [2024-11-16 09:26:51,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 (6)] Waiting until timeout for monitored process [2024-11-16 09:26:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:26:51,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 09:26:51,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:26:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:26:52,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:26:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:26:53,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-16 09:26:53,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551687824] [2024-11-16 09:26:53,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551687824] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:26:53,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 09:26:53,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-16 09:26:53,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435131052] [2024-11-16 09:26:53,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 09:26:53,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 09:26:53,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-16 09:26:53,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 09:26:53,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-16 09:26:53,810 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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) [2024-11-16 09:26:55,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:26:55,663 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2024-11-16 09:26:55,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 09:26:55,666 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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 15 [2024-11-16 09:26:55,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:26:55,667 INFO L225 Difference]: With dead ends: 52 [2024-11-16 09:26:55,667 INFO L226 Difference]: Without dead ends: 42 [2024-11-16 09:26:55,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-16 09:26:55,668 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:26:55,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 295 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 09:26:55,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-16 09:26:55,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-16 09:26:55,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 32 states have (on average 1.09375) internal successors, (35), 33 states have internal predecessors, (35), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 09:26:55,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2024-11-16 09:26:55,675 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 15 [2024-11-16 09:26:55,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:26:55,676 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2024-11-16 09:26:55,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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) [2024-11-16 09:26:55,676 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2024-11-16 09:26:55,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 09:26:55,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:26:55,677 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:26:55,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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 (6)] Ended with exit code 0 [2024-11-16 09:26:55,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/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 [2024-11-16 09:26:55,878 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:26:55,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:26:55,879 INFO L85 PathProgramCache]: Analyzing trace with hash 178227984, now seen corresponding path program 2 times [2024-11-16 09:26:55,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 09:26:55,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264648473] [2024-11-16 09:26:55,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 09:26:55,879 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 [2024-11-16 09:26:55,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 09:26:55,880 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/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) [2024-11-16 09:26:55,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 (7)] Waiting until timeout for monitored process [2024-11-16 09:26:57,813 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 09:26:57,813 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 09:26:57,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-16 09:26:57,825 INFO L278 TraceCheckSpWp]: Computing forward predicates...