./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-33.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-33.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 b8bc9de3d9f51bc5c6470e24c35cb3edba79759c76c5cfb6c2a32518b5b17fdc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 22:43:26,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 22:43:26,685 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 22:43:26,691 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 22:43:26,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 22:43:26,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 22:43:26,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 22:43:26,717 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 22:43:26,718 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 22:43:26,726 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 22:43:26,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 22:43:26,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 22:43:26,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 22:43:26,728 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 22:43:26,729 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 22:43:26,729 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 22:43:26,729 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 22:43:26,729 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 22:43:26,730 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 22:43:26,730 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 22:43:26,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 22:43:26,733 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 22:43:26,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 22:43:26,733 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 22:43:26,734 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 22:43:26,734 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 22:43:26,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 22:43:26,735 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 22:43:26,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 22:43:26,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 22:43:26,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 22:43:26,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 22:43:26,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:43:26,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 22:43:26,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 22:43:26,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 22:43:26,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 22:43:26,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 22:43:26,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 22:43:26,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 22:43:26,742 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 22:43:26,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 22:43:26,742 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8bc9de3d9f51bc5c6470e24c35cb3edba79759c76c5cfb6c2a32518b5b17fdc [2024-11-18 22:43:27,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 22:43:27,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 22:43:27,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 22:43:27,038 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 22:43:27,038 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 22:43:27,039 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-33.i [2024-11-18 22:43:28,509 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 22:43:28,735 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 22:43:28,736 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-33.i [2024-11-18 22:43:28,752 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9444c4458/208a629475f54c9c84fdf0506e342dea/FLAG4092957f1 [2024-11-18 22:43:29,108 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9444c4458/208a629475f54c9c84fdf0506e342dea [2024-11-18 22:43:29,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 22:43:29,112 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 22:43:29,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 22:43:29,114 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 22:43:29,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 22:43:29,120 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:43:29" (1/1) ... [2024-11-18 22:43:29,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9c8727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:29, skipping insertion in model container [2024-11-18 22:43:29,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:43:29" (1/1) ... [2024-11-18 22:43:29,148 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 22:43:29,331 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/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-33.i[915,928] [2024-11-18 22:43:29,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:43:29,406 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 22:43:29,418 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/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-33.i[915,928] [2024-11-18 22:43:29,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:43:29,452 INFO L204 MainTranslator]: Completed translation [2024-11-18 22:43:29,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:29 WrapperNode [2024-11-18 22:43:29,453 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 22:43:29,454 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 22:43:29,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 22:43:29,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 22:43:29,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:29" (1/1) ... [2024-11-18 22:43:29,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:29" (1/1) ... [2024-11-18 22:43:29,506 INFO L138 Inliner]: procedures = 26, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 116 [2024-11-18 22:43:29,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 22:43:29,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 22:43:29,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 22:43:29,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 22:43:29,525 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:29" (1/1) ... [2024-11-18 22:43:29,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:29" (1/1) ... [2024-11-18 22:43:29,533 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:29" (1/1) ... [2024-11-18 22:43:29,550 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 22:43:29,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:29" (1/1) ... [2024-11-18 22:43:29,551 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:29" (1/1) ... [2024-11-18 22:43:29,557 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:29" (1/1) ... [2024-11-18 22:43:29,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:29" (1/1) ... [2024-11-18 22:43:29,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:29" (1/1) ... [2024-11-18 22:43:29,563 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:29" (1/1) ... [2024-11-18 22:43:29,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 22:43:29,567 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 22:43:29,567 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 22:43:29,567 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 22:43:29,568 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:29" (1/1) ... [2024-11-18 22:43:29,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:43:29,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:43:29,606 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) [2024-11-18 22:43:29,609 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 [2024-11-18 22:43:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 22:43:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 22:43:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 22:43:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 22:43:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 22:43:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 22:43:29,755 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 22:43:29,758 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 22:43:30,076 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-18 22:43:30,077 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 22:43:30,094 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 22:43:30,094 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 22:43:30,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:43:30 BoogieIcfgContainer [2024-11-18 22:43:30,095 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 22:43:30,098 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 22:43:30,099 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 22:43:30,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 22:43:30,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:43:29" (1/3) ... [2024-11-18 22:43:30,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7458db83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:43:30, skipping insertion in model container [2024-11-18 22:43:30,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:29" (2/3) ... [2024-11-18 22:43:30,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7458db83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:43:30, skipping insertion in model container [2024-11-18 22:43:30,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:43:30" (3/3) ... [2024-11-18 22:43:30,104 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-33.i [2024-11-18 22:43:30,122 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 22:43:30,123 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 22:43:30,196 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 22:43:30,206 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;@48edaf08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 22:43:30,207 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 22:43:30,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 42 states have internal predecessors, (58), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-18 22:43:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 22:43:30,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:43:30,223 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:43:30,224 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:43:30,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:43:30,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1908333502, now seen corresponding path program 1 times [2024-11-18 22:43:30,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:43:30,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965408937] [2024-11-18 22:43:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:43:30,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:43:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:43:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-18 22:43:30,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:43:30,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965408937] [2024-11-18 22:43:30,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965408937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:43:30,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867617324] [2024-11-18 22:43:30,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:43:30,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:43:30,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:43:30,514 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) [2024-11-18 22:43:30,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 22:43:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:43:30,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 22:43:30,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:43:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-18 22:43:30,674 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:43:30,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867617324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:43:30,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:43:30,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 22:43:30,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078594328] [2024-11-18 22:43:30,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:43:30,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 22:43:30,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:43:30,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 22:43:30,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:43:30,715 INFO L87 Difference]: Start difference. First operand has 52 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 42 states have internal predecessors, (58), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 22:43:30,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:43:30,742 INFO L93 Difference]: Finished difference Result 99 states and 151 transitions. [2024-11-18 22:43:30,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 22:43:30,744 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2024-11-18 22:43:30,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:43:30,751 INFO L225 Difference]: With dead ends: 99 [2024-11-18 22:43:30,752 INFO L226 Difference]: Without dead ends: 46 [2024-11-18 22:43:30,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:43:30,761 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:43:30,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:43:30,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-18 22:43:30,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-18 22:43:30,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 36 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-18 22:43:30,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-11-18 22:43:30,808 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 65 [2024-11-18 22:43:30,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:43:30,809 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-11-18 22:43:30,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 22:43:30,810 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-11-18 22:43:30,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 22:43:30,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:43:30,814 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:43:30,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 22:43:31,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 22:43:31,016 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:43:31,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:43:31,017 INFO L85 PathProgramCache]: Analyzing trace with hash 964629886, now seen corresponding path program 1 times [2024-11-18 22:43:31,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:43:31,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907869871] [2024-11-18 22:43:31,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:43:31,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:43:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:43:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-18 22:43:31,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:43:31,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907869871] [2024-11-18 22:43:31,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907869871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:43:31,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:43:31,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:43:31,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050484382] [2024-11-18 22:43:31,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:43:31,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:43:31,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:43:31,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:43:31,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:43:31,253 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-18 22:43:31,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:43:31,395 INFO L93 Difference]: Finished difference Result 144 states and 194 transitions. [2024-11-18 22:43:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:43:31,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 65 [2024-11-18 22:43:31,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:43:31,399 INFO L225 Difference]: With dead ends: 144 [2024-11-18 22:43:31,400 INFO L226 Difference]: Without dead ends: 101 [2024-11-18 22:43:31,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:43:31,401 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 83 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:43:31,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 157 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:43:31,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-18 22:43:31,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 90. [2024-11-18 22:43:31,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 71 states have internal predecessors, (87), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-18 22:43:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 119 transitions. [2024-11-18 22:43:31,426 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 119 transitions. Word has length 65 [2024-11-18 22:43:31,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:43:31,427 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 119 transitions. [2024-11-18 22:43:31,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-18 22:43:31,428 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 119 transitions. [2024-11-18 22:43:31,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 22:43:31,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:43:31,431 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:43:31,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 22:43:31,431 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:43:31,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:43:31,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1961754744, now seen corresponding path program 1 times [2024-11-18 22:43:31,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:43:31,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202841855] [2024-11-18 22:43:31,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:43:31,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:43:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:43:31,665 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-18 22:43:31,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:43:31,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202841855] [2024-11-18 22:43:31,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202841855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:43:31,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:43:31,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 22:43:31,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553180686] [2024-11-18 22:43:31,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:43:31,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 22:43:31,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:43:31,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 22:43:31,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:43:31,670 INFO L87 Difference]: Start difference. First operand 90 states and 119 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-18 22:43:31,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:43:31,850 INFO L93 Difference]: Finished difference Result 188 states and 245 transitions. [2024-11-18 22:43:31,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 22:43:31,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2024-11-18 22:43:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:43:31,853 INFO L225 Difference]: With dead ends: 188 [2024-11-18 22:43:31,853 INFO L226 Difference]: Without dead ends: 101 [2024-11-18 22:43:31,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-18 22:43:31,858 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 78 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:43:31,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 236 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:43:31,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-18 22:43:31,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 90. [2024-11-18 22:43:31,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 71 states have internal predecessors, (86), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-18 22:43:31,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 118 transitions. [2024-11-18 22:43:31,878 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 118 transitions. Word has length 69 [2024-11-18 22:43:31,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:43:31,878 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 118 transitions. [2024-11-18 22:43:31,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-18 22:43:31,879 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 118 transitions. [2024-11-18 22:43:31,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 22:43:31,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:43:31,881 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:43:31,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 22:43:31,881 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:43:31,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:43:31,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1053348874, now seen corresponding path program 1 times [2024-11-18 22:43:31,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:43:31,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132922800] [2024-11-18 22:43:31,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:43:31,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:43:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:43:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-18 22:43:34,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:43:34,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132922800] [2024-11-18 22:43:34,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132922800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:43:34,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:43:34,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 22:43:34,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388199679] [2024-11-18 22:43:34,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:43:34,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 22:43:34,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:43:34,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 22:43:34,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-18 22:43:34,602 INFO L87 Difference]: Start difference. First operand 90 states and 118 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-18 22:43:36,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:43:36,024 INFO L93 Difference]: Finished difference Result 142 states and 172 transitions. [2024-11-18 22:43:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 22:43:36,025 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2024-11-18 22:43:36,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:43:36,026 INFO L225 Difference]: With dead ends: 142 [2024-11-18 22:43:36,027 INFO L226 Difference]: Without dead ends: 140 [2024-11-18 22:43:36,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2024-11-18 22:43:36,028 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 183 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 22:43:36,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 352 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 22:43:36,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-18 22:43:36,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 99. [2024-11-18 22:43:36,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 80 states have (on average 1.2) internal successors, (96), 80 states have internal predecessors, (96), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-18 22:43:36,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 128 transitions. [2024-11-18 22:43:36,048 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 128 transitions. Word has length 69 [2024-11-18 22:43:36,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:43:36,048 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 128 transitions. [2024-11-18 22:43:36,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-18 22:43:36,052 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 128 transitions. [2024-11-18 22:43:36,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 22:43:36,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:43:36,054 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:43:36,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 22:43:36,054 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:43:36,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:43:36,055 INFO L85 PathProgramCache]: Analyzing trace with hash 352284296, now seen corresponding path program 1 times [2024-11-18 22:43:36,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:43:36,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272175821] [2024-11-18 22:43:36,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:43:36,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:43:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:43:36,553 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-18 22:43:36,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:43:36,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272175821] [2024-11-18 22:43:36,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272175821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:43:36,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:43:36,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 22:43:36,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510155648] [2024-11-18 22:43:36,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:43:36,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 22:43:36,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:43:36,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 22:43:36,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:43:36,560 INFO L87 Difference]: Start difference. First operand 99 states and 128 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-18 22:43:36,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:43:36,805 INFO L93 Difference]: Finished difference Result 256 states and 326 transitions. [2024-11-18 22:43:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 22:43:36,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2024-11-18 22:43:36,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:43:36,808 INFO L225 Difference]: With dead ends: 256 [2024-11-18 22:43:36,809 INFO L226 Difference]: Without dead ends: 160 [2024-11-18 22:43:36,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:43:36,813 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 65 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:43:36,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 244 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:43:36,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-18 22:43:36,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2024-11-18 22:43:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 99 states have (on average 1.1616161616161615) internal successors, (115), 99 states have internal predecessors, (115), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 22:43:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 163 transitions. [2024-11-18 22:43:36,841 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 163 transitions. Word has length 69 [2024-11-18 22:43:36,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:43:36,844 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 163 transitions. [2024-11-18 22:43:36,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-18 22:43:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 163 transitions. [2024-11-18 22:43:36,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 22:43:36,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:43:36,848 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:43:36,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 22:43:36,849 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:43:36,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:43:36,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1135367853, now seen corresponding path program 1 times [2024-11-18 22:43:36,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:43:36,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696894645] [2024-11-18 22:43:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:43:36,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:43:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:43:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-18 22:43:38,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:43:38,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696894645] [2024-11-18 22:43:38,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696894645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:43:38,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:43:38,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 22:43:38,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629536995] [2024-11-18 22:43:38,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:43:38,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 22:43:38,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:43:38,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 22:43:38,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:43:38,896 INFO L87 Difference]: Start difference. First operand 127 states and 163 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-18 22:43:40,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:43:40,047 INFO L93 Difference]: Finished difference Result 162 states and 200 transitions. [2024-11-18 22:43:40,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 22:43:40,048 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 70 [2024-11-18 22:43:40,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:43:40,049 INFO L225 Difference]: With dead ends: 162 [2024-11-18 22:43:40,050 INFO L226 Difference]: Without dead ends: 160 [2024-11-18 22:43:40,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2024-11-18 22:43:40,055 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 195 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:43:40,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 278 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 22:43:40,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-18 22:43:40,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 136. [2024-11-18 22:43:40,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 108 states have (on average 1.1666666666666667) internal successors, (126), 108 states have internal predecessors, (126), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 22:43:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 174 transitions. [2024-11-18 22:43:40,077 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 174 transitions. Word has length 70 [2024-11-18 22:43:40,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:43:40,078 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 174 transitions. [2024-11-18 22:43:40,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-18 22:43:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 174 transitions. [2024-11-18 22:43:40,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-18 22:43:40,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:43:40,080 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:43:40,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 22:43:40,081 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:43:40,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:43:40,081 INFO L85 PathProgramCache]: Analyzing trace with hash -196562412, now seen corresponding path program 1 times [2024-11-18 22:43:40,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:43:40,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054361006] [2024-11-18 22:43:40,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:43:40,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:43:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:43:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-18 22:43:40,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:43:40,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054361006] [2024-11-18 22:43:40,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054361006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:43:40,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913226861] [2024-11-18 22:43:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:43:40,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:43:40,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:43:40,239 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) [2024-11-18 22:43:40,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 22:43:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:43:40,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 22:43:40,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:43:40,377 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-18 22:43:40,377 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:43:40,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913226861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:43:40,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:43:40,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 22:43:40,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366080067] [2024-11-18 22:43:40,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:43:40,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 22:43:40,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:43:40,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 22:43:40,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:43:40,380 INFO L87 Difference]: Start difference. First operand 136 states and 174 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 22:43:40,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:43:40,407 INFO L93 Difference]: Finished difference Result 140 states and 177 transitions. [2024-11-18 22:43:40,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 22:43:40,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2024-11-18 22:43:40,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:43:40,409 INFO L225 Difference]: With dead ends: 140 [2024-11-18 22:43:40,409 INFO L226 Difference]: Without dead ends: 87 [2024-11-18 22:43:40,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:43:40,411 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 2 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:43:40,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 99 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:43:40,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-18 22:43:40,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2024-11-18 22:43:40,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 66 states have internal predecessors, (72), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-18 22:43:40,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2024-11-18 22:43:40,429 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 134 [2024-11-18 22:43:40,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:43:40,430 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2024-11-18 22:43:40,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 22:43:40,431 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2024-11-18 22:43:40,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-18 22:43:40,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:43:40,436 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:43:40,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 22:43:40,636 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,SelfDestructingSolverStorable6 [2024-11-18 22:43:40,637 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:43:40,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:43:40,638 INFO L85 PathProgramCache]: Analyzing trace with hash 433843283, now seen corresponding path program 1 times [2024-11-18 22:43:40,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:43:40,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129932459] [2024-11-18 22:43:40,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:43:40,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:43:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:43:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-18 22:43:40,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:43:40,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129932459] [2024-11-18 22:43:40,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129932459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:43:40,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249724295] [2024-11-18 22:43:40,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:43:40,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:43:40,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:43:40,736 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) [2024-11-18 22:43:40,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 22:43:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:43:40,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 22:43:40,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:43:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 289 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-18 22:43:40,929 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:43:40,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249724295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:43:40,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:43:40,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-18 22:43:40,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676491247] [2024-11-18 22:43:40,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:43:40,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:43:40,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:43:40,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:43:40,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:43:40,931 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 22:43:40,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:43:40,959 INFO L93 Difference]: Finished difference Result 99 states and 120 transitions. [2024-11-18 22:43:40,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:43:40,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2024-11-18 22:43:40,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:43:40,961 INFO L225 Difference]: With dead ends: 99 [2024-11-18 22:43:40,961 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 22:43:40,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:43:40,962 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 4 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 92 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 [2024-11-18 22:43:40,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 92 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:43:40,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 22:43:40,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 22:43:40,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-18 22:43:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 22:43:40,963 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2024-11-18 22:43:40,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:43:40,964 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 22:43:40,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 22:43:40,964 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 22:43:40,964 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 22:43:40,970 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 22:43:40,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 22:43:41,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:43:41,175 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:43:41,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 22:43:41,491 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 22:43:41,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:43:41 BoogieIcfgContainer [2024-11-18 22:43:41,525 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 22:43:41,525 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 22:43:41,526 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 22:43:41,526 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 22:43:41,526 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:43:30" (3/4) ... [2024-11-18 22:43:41,528 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 22:43:41,533 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-18 22:43:41,540 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-18 22:43:41,541 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 22:43:41,541 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 22:43:41,541 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 22:43:41,646 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 22:43:41,647 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 22:43:41,647 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 22:43:41,647 INFO L158 Benchmark]: Toolchain (without parser) took 12535.37ms. Allocated memory was 155.2MB in the beginning and 339.7MB in the end (delta: 184.5MB). Free memory was 124.5MB in the beginning and 178.5MB in the end (delta: -53.9MB). Peak memory consumption was 129.5MB. Max. memory is 16.1GB. [2024-11-18 22:43:41,648 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory was 121.7MB in the beginning and 121.7MB in the end (delta: 15.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 22:43:41,648 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.10ms. Allocated memory is still 155.2MB. Free memory was 124.5MB in the beginning and 110.8MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 22:43:41,648 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.12ms. Allocated memory is still 155.2MB. Free memory was 110.8MB in the beginning and 108.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-18 22:43:41,650 INFO L158 Benchmark]: Boogie Preprocessor took 54.95ms. Allocated memory is still 155.2MB. Free memory was 108.0MB in the beginning and 105.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 22:43:41,650 INFO L158 Benchmark]: RCFGBuilder took 527.96ms. Allocated memory is still 155.2MB. Free memory was 105.2MB in the beginning and 117.8MB in the end (delta: -12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 22:43:41,650 INFO L158 Benchmark]: TraceAbstraction took 11427.24ms. Allocated memory was 155.2MB in the beginning and 339.7MB in the end (delta: 184.5MB). Free memory was 116.9MB in the beginning and 183.7MB in the end (delta: -66.8MB). Peak memory consumption was 120.7MB. Max. memory is 16.1GB. [2024-11-18 22:43:41,650 INFO L158 Benchmark]: Witness Printer took 121.53ms. Allocated memory is still 339.7MB. Free memory was 183.7MB in the beginning and 178.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-18 22:43:41,652 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory was 121.7MB in the beginning and 121.7MB in the end (delta: 15.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.10ms. Allocated memory is still 155.2MB. Free memory was 124.5MB in the beginning and 110.8MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.12ms. Allocated memory is still 155.2MB. Free memory was 110.8MB in the beginning and 108.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.95ms. Allocated memory is still 155.2MB. Free memory was 108.0MB in the beginning and 105.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 527.96ms. Allocated memory is still 155.2MB. Free memory was 105.2MB in the beginning and 117.8MB in the end (delta: -12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 11427.24ms. Allocated memory was 155.2MB in the beginning and 339.7MB in the end (delta: 184.5MB). Free memory was 116.9MB in the beginning and 183.7MB in the end (delta: -66.8MB). Peak memory consumption was 120.7MB. Max. memory is 16.1GB. * Witness Printer took 121.53ms. Allocated memory is still 339.7MB. Free memory was 183.7MB in the beginning and 178.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.0s, OverallIterations: 8, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 610 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 610 mSDsluCounter, 1524 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1102 mSDsCounter, 130 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 767 IncrementalHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 130 mSolverCounterUnsat, 422 mSDtfsCounter, 767 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 426 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=6, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 122 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 1012 NumberOfCodeBlocks, 1012 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1001 ConstructedInterpolants, 0 QuantifiedInterpolants, 5070 SizeOfPredicates, 0 NumberOfNonLiveVariables, 798 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 2812/2828 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: ((((((((((0 <= 0) && (1 <= k_loop)) && (50 <= last_1_var_1_9)) && (var_1_8 == var_1_18)) && ((((128 + (65534 * last_1_var_1_7)) == (var_1_1 + (65536 * ((64 + (32767 * last_1_var_1_7)) / 32768)))) && ((((last_1_var_1_7 * 32767) + 64) % 32768) <= 16383)) || (((65534 * last_1_var_1_7) == ((65408 + var_1_1) + (65536 * ((64 + (32767 * last_1_var_1_7)) / 32768)))) && (16384 <= (((last_1_var_1_7 * 32767) + 64) % 32768))))) && (var_1_17 == var_1_16)) && (var_1_7 == var_1_8)) && (50 <= var_1_9)) && (var_1_8 <= ((short) var_1_8 + var_1_18))) || ((((((200 == var_1_7) && (50 <= last_1_var_1_9)) && (0 <= k_loop)) && (0 <= 0)) && ((((64 + (32767 * last_1_var_1_7)) / 32768) + 1) <= last_1_var_1_7)) && (50 <= var_1_9))) - ProcedureContractResult [Line: 20]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Requires: (((((200 == var_1_7) && (50 <= last_1_var_1_9)) && (0 <= 0)) && ((((64 + (32767 * last_1_var_1_7)) / 32768) + 1) <= last_1_var_1_7)) && (50 <= var_1_9)) Ensures: ((((((200 == var_1_7) && (50 <= last_1_var_1_9)) && (0 <= 0)) && ((((64 + (32767 * last_1_var_1_7)) / 32768) + 1) <= last_1_var_1_7)) && (50 <= var_1_9)) && ((((((((((((((isInitial == \old(isInitial)) && (var_1_1 == \old(var_1_1))) && (var_1_7 == \old(var_1_7))) && (var_1_8 == \old(var_1_8))) && (var_1_9 == \old(var_1_9))) && (var_1_12 == \old(var_1_12))) && (var_1_13 == \old(var_1_13))) && (var_1_14 == \old(var_1_14))) && (var_1_15 == \old(var_1_15))) && (var_1_16 == \old(var_1_16))) && (var_1_17 == \old(var_1_17))) && (var_1_18 == \old(var_1_18))) && (last_1_var_1_7 == \old(last_1_var_1_7))) && (last_1_var_1_9 == \old(last_1_var_1_9)))) RESULT: Ultimate proved your program to be correct! [2024-11-18 22:43:41,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE