./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/copysome1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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/array-programs/copysome1-1.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 29c11d006ccc17ffcd2d0ed55176947b470e18e4deadd67e8df28761f278f9af --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 15:34:59,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 15:34:59,837 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 15:34:59,842 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 15:34:59,843 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 15:34:59,880 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 15:34:59,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 15:34:59,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 15:34:59,881 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 15:34:59,882 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 15:34:59,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 15:34:59,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 15:34:59,883 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 15:34:59,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 15:34:59,886 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 15:34:59,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 15:34:59,886 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 15:34:59,887 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 15:34:59,887 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 15:34:59,887 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 15:34:59,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 15:34:59,888 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 15:34:59,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 15:34:59,892 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 15:34:59,892 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 15:34:59,892 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 15:34:59,892 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 15:34:59,893 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 15:34:59,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 15:34:59,893 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 15:34:59,893 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 15:34:59,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 15:34:59,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:34:59,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 15:34:59,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 15:34:59,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 15:34:59,894 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 15:34:59,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 15:34:59,895 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 15:34:59,895 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 15:34:59,896 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 15:34:59,897 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 15:34:59,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29c11d006ccc17ffcd2d0ed55176947b470e18e4deadd67e8df28761f278f9af [2024-11-11 15:35:00,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 15:35:00,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 15:35:00,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 15:35:00,167 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 15:35:00,168 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 15:35:00,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/copysome1-1.i [2024-11-11 15:35:01,535 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 15:35:01,706 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 15:35:01,706 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/copysome1-1.i [2024-11-11 15:35:01,713 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4827267/2c4cb98626a84aae83cc1cddf5b802b8/FLAG030550d63 [2024-11-11 15:35:02,107 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4827267/2c4cb98626a84aae83cc1cddf5b802b8 [2024-11-11 15:35:02,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 15:35:02,110 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 15:35:02,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 15:35:02,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 15:35:02,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 15:35:02,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:35:02" (1/1) ... [2024-11-11 15:35:02,120 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323acc55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:02, skipping insertion in model container [2024-11-11 15:35:02,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:35:02" (1/1) ... [2024-11-11 15:35:02,142 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 15:35:02,321 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/array-programs/copysome1-1.i[806,819] [2024-11-11 15:35:02,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:35:02,350 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 15:35:02,363 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/array-programs/copysome1-1.i[806,819] [2024-11-11 15:35:02,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:35:02,391 INFO L204 MainTranslator]: Completed translation [2024-11-11 15:35:02,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:02 WrapperNode [2024-11-11 15:35:02,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 15:35:02,393 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 15:35:02,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 15:35:02,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 15:35:02,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:02" (1/1) ... [2024-11-11 15:35:02,407 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:02" (1/1) ... [2024-11-11 15:35:02,423 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2024-11-11 15:35:02,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 15:35:02,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 15:35:02,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 15:35:02,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 15:35:02,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:02" (1/1) ... [2024-11-11 15:35:02,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:02" (1/1) ... [2024-11-11 15:35:02,439 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:02" (1/1) ... [2024-11-11 15:35:02,456 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 3, 3]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2024-11-11 15:35:02,457 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:02" (1/1) ... [2024-11-11 15:35:02,457 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:02" (1/1) ... [2024-11-11 15:35:02,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:02" (1/1) ... [2024-11-11 15:35:02,470 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:02" (1/1) ... [2024-11-11 15:35:02,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:02" (1/1) ... [2024-11-11 15:35:02,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:02" (1/1) ... [2024-11-11 15:35:02,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 15:35:02,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 15:35:02,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 15:35:02,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 15:35:02,475 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:02" (1/1) ... [2024-11-11 15:35:02,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:35:02,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:35:02,507 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) [2024-11-11 15:35:02,510 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 [2024-11-11 15:35:02,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 15:35:02,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 15:35:02,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-11 15:35:02,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-11 15:35:02,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-11 15:35:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-11 15:35:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-11 15:35:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-11 15:35:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 15:35:02,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 15:35:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-11 15:35:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-11 15:35:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-11 15:35:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-11 15:35:02,667 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 15:35:02,669 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 15:35:02,829 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-11 15:35:02,829 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 15:35:02,842 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 15:35:02,843 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-11 15:35:02,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:35:02 BoogieIcfgContainer [2024-11-11 15:35:02,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 15:35:02,846 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 15:35:02,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 15:35:02,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 15:35:02,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 03:35:02" (1/3) ... [2024-11-11 15:35:02,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c1a7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:35:02, skipping insertion in model container [2024-11-11 15:35:02,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:02" (2/3) ... [2024-11-11 15:35:02,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c1a7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:35:02, skipping insertion in model container [2024-11-11 15:35:02,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:35:02" (3/3) ... [2024-11-11 15:35:02,854 INFO L112 eAbstractionObserver]: Analyzing ICFG copysome1-1.i [2024-11-11 15:35:02,870 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 15:35:02,871 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 15:35:02,936 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 15:35:02,943 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;@69778c37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 15:35:02,944 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 15:35:02,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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) [2024-11-11 15:35:02,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-11 15:35:02,953 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:02,953 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:02,954 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:02,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:02,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2060710478, now seen corresponding path program 1 times [2024-11-11 15:35:02,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:02,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230668088] [2024-11-11 15:35:02,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:02,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:35:03,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:03,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230668088] [2024-11-11 15:35:03,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230668088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:35:03,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:35:03,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 15:35:03,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283449407] [2024-11-11 15:35:03,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:35:03,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 15:35:03,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:03,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 15:35:03,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 15:35:03,217 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:03,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:03,267 INFO L93 Difference]: Finished difference Result 41 states and 60 transitions. [2024-11-11 15:35:03,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 15:35:03,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-11 15:35:03,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:03,276 INFO L225 Difference]: With dead ends: 41 [2024-11-11 15:35:03,276 INFO L226 Difference]: Without dead ends: 21 [2024-11-11 15:35:03,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 15:35:03,282 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:03,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 31 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:35:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-11 15:35:03,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2024-11-11 15:35:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2024-11-11 15:35:03,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-11 15:35:03,313 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2024-11-11 15:35:03,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:03,313 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-11 15:35:03,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:03,314 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-11 15:35:03,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-11 15:35:03,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:03,314 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:03,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 15:35:03,315 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:03,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:03,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1458340319, now seen corresponding path program 1 times [2024-11-11 15:35:03,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:03,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557570108] [2024-11-11 15:35:03,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:03,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:35:03,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:03,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557570108] [2024-11-11 15:35:03,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557570108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:35:03,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011222420] [2024-11-11 15:35:03,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:03,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:03,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:35:03,468 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) [2024-11-11 15:35:03,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 15:35:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:03,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 15:35:03,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:35:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:35:03,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:35:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:35:03,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011222420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:35:03,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:35:03,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-11 15:35:03,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71775872] [2024-11-11 15:35:03,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:35:03,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-11 15:35:03,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:03,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-11 15:35:03,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-11 15:35:03,715 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2024-11-11 15:35:03,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:03,797 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2024-11-11 15:35:03,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-11 15:35:03,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 [2024-11-11 15:35:03,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:03,800 INFO L225 Difference]: With dead ends: 46 [2024-11-11 15:35:03,800 INFO L226 Difference]: Without dead ends: 33 [2024-11-11 15:35:03,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-11 15:35:03,802 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:03,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 34 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:35:03,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-11 15:35:03,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-11 15:35:03,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 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) [2024-11-11 15:35:03,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-11-11 15:35:03,808 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 15 [2024-11-11 15:35:03,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:03,808 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-11-11 15:35:03,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2024-11-11 15:35:03,809 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-11-11 15:35:03,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-11 15:35:03,810 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:03,812 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:03,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 15:35:04,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:04,017 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:04,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:04,018 INFO L85 PathProgramCache]: Analyzing trace with hash -736833947, now seen corresponding path program 2 times [2024-11-11 15:35:04,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:04,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089103261] [2024-11-11 15:35:04,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:04,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 15:35:04,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:04,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089103261] [2024-11-11 15:35:04,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089103261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:35:04,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110650014] [2024-11-11 15:35:04,293 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:35:04,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:04,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:35:04,295 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) [2024-11-11 15:35:04,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 15:35:04,378 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:35:04,379 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:35:04,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-11 15:35:04,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:35:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 15:35:04,409 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:35:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 15:35:04,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110650014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:35:04,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:35:04,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-11 15:35:04,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252372546] [2024-11-11 15:35:04,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:35:04,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-11 15:35:04,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:04,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-11 15:35:04,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-11 15:35:04,501 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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) [2024-11-11 15:35:04,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:04,639 INFO L93 Difference]: Finished difference Result 85 states and 116 transitions. [2024-11-11 15:35:04,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-11 15:35:04,642 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 30 [2024-11-11 15:35:04,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:04,643 INFO L225 Difference]: With dead ends: 85 [2024-11-11 15:35:04,643 INFO L226 Difference]: Without dead ends: 63 [2024-11-11 15:35:04,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-11 15:35:04,645 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 68 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:04,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 34 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:35:04,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-11 15:35:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-11 15:35:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 states have internal predecessors, (76), 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) [2024-11-11 15:35:04,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-11-11 15:35:04,658 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 30 [2024-11-11 15:35:04,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:04,658 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-11-11 15:35:04,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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) [2024-11-11 15:35:04,659 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-11-11 15:35:04,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-11 15:35:04,660 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:04,660 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:04,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-11 15:35:04,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-11 15:35:04,861 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:04,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:04,862 INFO L85 PathProgramCache]: Analyzing trace with hash -967663183, now seen corresponding path program 3 times [2024-11-11 15:35:04,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:04,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952844354] [2024-11-11 15:35:04,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:04,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-11 15:35:05,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:05,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952844354] [2024-11-11 15:35:05,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952844354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:35:05,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71879423] [2024-11-11 15:35:05,298 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:35:05,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:05,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:35:05,300 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:35:05,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 15:35:06,224 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-11 15:35:06,224 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:35:06,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-11 15:35:06,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:35:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 19 proven. 145 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-11 15:35:06,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:35:06,584 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-11 15:35:06,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71879423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:35:06,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:35:06,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 26 [2024-11-11 15:35:06,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430821685] [2024-11-11 15:35:06,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:35:06,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-11 15:35:06,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:06,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-11 15:35:06,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2024-11-11 15:35:06,590 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 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) [2024-11-11 15:35:06,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:06,827 INFO L93 Difference]: Finished difference Result 163 states and 224 transitions. [2024-11-11 15:35:06,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-11 15:35:06,828 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 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 60 [2024-11-11 15:35:06,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:06,829 INFO L225 Difference]: With dead ends: 163 [2024-11-11 15:35:06,829 INFO L226 Difference]: Without dead ends: 123 [2024-11-11 15:35:06,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2024-11-11 15:35:06,830 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 93 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:06,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 52 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:35:06,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-11 15:35:06,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-11 15:35:06,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.2131147540983607) internal successors, (148), 122 states have internal predecessors, (148), 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) [2024-11-11 15:35:06,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 148 transitions. [2024-11-11 15:35:06,842 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 148 transitions. Word has length 60 [2024-11-11 15:35:06,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:06,842 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 148 transitions. [2024-11-11 15:35:06,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 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) [2024-11-11 15:35:06,843 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 148 transitions. [2024-11-11 15:35:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-11 15:35:06,844 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:06,844 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:06,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-11 15:35:07,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:07,045 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:07,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:07,046 INFO L85 PathProgramCache]: Analyzing trace with hash -232988599, now seen corresponding path program 4 times [2024-11-11 15:35:07,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:07,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868396069] [2024-11-11 15:35:07,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:07,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-11 15:35:07,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:07,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868396069] [2024-11-11 15:35:07,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868396069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:35:07,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748933574] [2024-11-11 15:35:07,988 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:35:07,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:07,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:35:07,990 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:35:07,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 15:35:08,140 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:35:08,141 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:35:08,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-11 15:35:08,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:35:08,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-11 15:35:08,257 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:08,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:08,318 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:08,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:08,380 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:08,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:08,450 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:08,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:08,509 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:08,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:08,563 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:08,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:08,620 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:08,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:08,678 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:08,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:08,733 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:08,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:08,794 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:08,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:08,866 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:08,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:08,935 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:08,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:08,997 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:08,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:09,058 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:09,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:09,118 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:09,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:09,184 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:09,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:09,248 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:09,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:09,313 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:09,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:09,382 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:09,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:09,453 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:09,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:09,517 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-11 15:35:09,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:35:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 610 proven. 105 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-11 15:35:09,615 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:35:10,765 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-11 15:35:10,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-11 15:35:10,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 20 proven. 125 refuted. 0 times theorem prover too weak. 1054 trivial. 0 not checked. [2024-11-11 15:35:10,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748933574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:35:10,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:35:10,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28, 10] total 54 [2024-11-11 15:35:10,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227477511] [2024-11-11 15:35:10,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:35:10,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-11 15:35:10,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:10,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-11 15:35:10,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=685, Invalid=2177, Unknown=0, NotChecked=0, Total=2862 [2024-11-11 15:35:10,775 INFO L87 Difference]: Start difference. First operand 123 states and 148 transitions. Second operand has 54 states, 54 states have (on average 2.6481481481481484) internal successors, (143), 54 states have internal predecessors, (143), 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) [2024-11-11 15:35:11,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:11,692 INFO L93 Difference]: Finished difference Result 290 states and 371 transitions. [2024-11-11 15:35:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-11 15:35:11,692 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.6481481481481484) internal successors, (143), 54 states have internal predecessors, (143), 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 120 [2024-11-11 15:35:11,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:11,694 INFO L225 Difference]: With dead ends: 290 [2024-11-11 15:35:11,694 INFO L226 Difference]: Without dead ends: 214 [2024-11-11 15:35:11,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 190 SyntacticMatches, 21 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2447 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1329, Invalid=4523, Unknown=0, NotChecked=0, Total=5852 [2024-11-11 15:35:11,697 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 442 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:11,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 103 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-11 15:35:11,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-11 15:35:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 200. [2024-11-11 15:35:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.256281407035176) internal successors, (250), 199 states have internal predecessors, (250), 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) [2024-11-11 15:35:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 250 transitions. [2024-11-11 15:35:11,713 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 250 transitions. Word has length 120 [2024-11-11 15:35:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:11,714 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 250 transitions. [2024-11-11 15:35:11,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.6481481481481484) internal successors, (143), 54 states have internal predecessors, (143), 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) [2024-11-11 15:35:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 250 transitions. [2024-11-11 15:35:11,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-11 15:35:11,716 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:11,716 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:11,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-11 15:35:11,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:11,921 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:11,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:11,921 INFO L85 PathProgramCache]: Analyzing trace with hash 358914803, now seen corresponding path program 1 times [2024-11-11 15:35:11,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:11,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518543561] [2024-11-11 15:35:11,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:11,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 1266 trivial. 0 not checked. [2024-11-11 15:35:12,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:12,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518543561] [2024-11-11 15:35:12,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518543561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:35:12,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:35:12,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 15:35:12,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451286782] [2024-11-11 15:35:12,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:35:12,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 15:35:12,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:12,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 15:35:12,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:35:12,106 INFO L87 Difference]: Start difference. First operand 200 states and 250 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2024-11-11 15:35:12,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:12,133 INFO L93 Difference]: Finished difference Result 207 states and 258 transitions. [2024-11-11 15:35:12,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 15:35:12,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 125 [2024-11-11 15:35:12,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:12,135 INFO L225 Difference]: With dead ends: 207 [2024-11-11 15:35:12,135 INFO L226 Difference]: Without dead ends: 131 [2024-11-11 15:35:12,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:35:12,136 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:12,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 20 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:35:12,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-11 15:35:12,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-11 15:35:12,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.2076923076923076) internal successors, (157), 130 states have internal predecessors, (157), 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) [2024-11-11 15:35:12,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2024-11-11 15:35:12,155 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 125 [2024-11-11 15:35:12,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:12,158 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2024-11-11 15:35:12,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2024-11-11 15:35:12,158 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2024-11-11 15:35:12,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-11 15:35:12,159 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:12,160 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:12,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-11 15:35:12,160 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:12,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:12,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1711220478, now seen corresponding path program 1 times [2024-11-11 15:35:12,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:12,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217413004] [2024-11-11 15:35:12,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:12,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1313 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2024-11-11 15:35:12,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:12,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217413004] [2024-11-11 15:35:12,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217413004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:35:12,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:35:12,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 15:35:12,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581058583] [2024-11-11 15:35:12,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:35:12,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 15:35:12,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:12,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 15:35:12,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:35:12,369 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-11-11 15:35:12,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:12,387 INFO L93 Difference]: Finished difference Result 140 states and 167 transitions. [2024-11-11 15:35:12,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 15:35:12,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 128 [2024-11-11 15:35:12,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:12,388 INFO L225 Difference]: With dead ends: 140 [2024-11-11 15:35:12,388 INFO L226 Difference]: Without dead ends: 133 [2024-11-11 15:35:12,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:35:12,389 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:12,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 27 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:35:12,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-11 15:35:12,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2024-11-11 15:35:12,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.2) internal successors, (156), 130 states have internal predecessors, (156), 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) [2024-11-11 15:35:12,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2024-11-11 15:35:12,399 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 128 [2024-11-11 15:35:12,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:12,399 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2024-11-11 15:35:12,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-11-11 15:35:12,400 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2024-11-11 15:35:12,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-11 15:35:12,401 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:12,401 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:12,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-11 15:35:12,401 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:12,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:12,402 INFO L85 PathProgramCache]: Analyzing trace with hash 405578956, now seen corresponding path program 1 times [2024-11-11 15:35:12,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:12,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702135567] [2024-11-11 15:35:12,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:12,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2024-11-11 15:35:13,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:13,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702135567] [2024-11-11 15:35:13,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702135567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:35:13,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48233328] [2024-11-11 15:35:13,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:13,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:13,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:35:13,237 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:35:13,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 15:35:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:13,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-11 15:35:13,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:35:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2024-11-11 15:35:13,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:35:14,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2024-11-11 15:35:14,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48233328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:35:14,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:35:14,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2024-11-11 15:35:14,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445226356] [2024-11-11 15:35:14,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:35:14,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-11 15:35:14,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:14,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-11 15:35:14,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2024-11-11 15:35:14,339 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 51 states have internal predecessors, (113), 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) [2024-11-11 15:35:14,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:14,822 INFO L93 Difference]: Finished difference Result 338 states and 462 transitions. [2024-11-11 15:35:14,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-11 15:35:14,823 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 51 states have internal predecessors, (113), 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 130 [2024-11-11 15:35:14,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:14,824 INFO L225 Difference]: With dead ends: 338 [2024-11-11 15:35:14,825 INFO L226 Difference]: Without dead ends: 256 [2024-11-11 15:35:14,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2024-11-11 15:35:14,826 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 509 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:14,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 74 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 15:35:14,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-11 15:35:14,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-11-11 15:35:14,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.2) internal successors, (306), 255 states have internal predecessors, (306), 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) [2024-11-11 15:35:14,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 306 transitions. [2024-11-11 15:35:14,842 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 306 transitions. Word has length 130 [2024-11-11 15:35:14,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:14,846 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 306 transitions. [2024-11-11 15:35:14,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 51 states have internal predecessors, (113), 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) [2024-11-11 15:35:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 306 transitions. [2024-11-11 15:35:14,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-11 15:35:14,853 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:14,853 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 48, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:14,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-11 15:35:15,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:15,054 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:15,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:15,055 INFO L85 PathProgramCache]: Analyzing trace with hash -386225852, now seen corresponding path program 2 times [2024-11-11 15:35:15,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:15,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631625185] [2024-11-11 15:35:15,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:15,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5739 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 3435 trivial. 0 not checked. [2024-11-11 15:35:17,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:17,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631625185] [2024-11-11 15:35:17,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631625185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:35:17,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071443980] [2024-11-11 15:35:17,815 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:35:17,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:17,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:35:17,816 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:35:17,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 15:35:18,157 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:35:18,157 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:35:18,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-11 15:35:18,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:35:18,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5739 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 3435 trivial. 0 not checked. [2024-11-11 15:35:18,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:35:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5739 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 3435 trivial. 0 not checked. [2024-11-11 15:35:20,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071443980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:35:20,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:35:20,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 101 [2024-11-11 15:35:20,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928108857] [2024-11-11 15:35:20,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:35:20,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-11 15:35:20,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:20,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-11 15:35:20,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2024-11-11 15:35:20,866 INFO L87 Difference]: Start difference. First operand 256 states and 306 transitions. Second operand has 101 states, 101 states have (on average 2.108910891089109) internal successors, (213), 101 states have internal predecessors, (213), 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) [2024-11-11 15:35:22,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:22,882 INFO L93 Difference]: Finished difference Result 663 states and 912 transitions. [2024-11-11 15:35:22,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-11 15:35:22,883 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.108910891089109) internal successors, (213), 101 states have internal predecessors, (213), 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 255 [2024-11-11 15:35:22,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:22,885 INFO L225 Difference]: With dead ends: 663 [2024-11-11 15:35:22,885 INFO L226 Difference]: Without dead ends: 506 [2024-11-11 15:35:22,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2024-11-11 15:35:22,888 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 1159 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:22,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 64 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-11 15:35:22,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-11-11 15:35:22,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2024-11-11 15:35:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 1.2) internal successors, (606), 505 states have internal predecessors, (606), 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) [2024-11-11 15:35:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 606 transitions. [2024-11-11 15:35:22,912 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 606 transitions. Word has length 255 [2024-11-11 15:35:22,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:22,912 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 606 transitions. [2024-11-11 15:35:22,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.108910891089109) internal successors, (213), 101 states have internal predecessors, (213), 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) [2024-11-11 15:35:22,912 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 606 transitions. [2024-11-11 15:35:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-11-11 15:35:22,921 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:22,922 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 98, 98, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:22,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-11 15:35:23,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:23,123 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:23,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:23,124 INFO L85 PathProgramCache]: Analyzing trace with hash -252550752, now seen corresponding path program 3 times [2024-11-11 15:35:23,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:23,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379514559] [2024-11-11 15:35:23,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:23,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:31,166 INFO L134 CoverageAnalysis]: Checked inductivity of 23964 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 14360 trivial. 0 not checked. [2024-11-11 15:35:31,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:31,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379514559] [2024-11-11 15:35:31,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379514559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:35:31,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083468918] [2024-11-11 15:35:31,167 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:35:31,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:31,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:35:31,168 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:35:31,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process