./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-98.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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_fillercode_fillercodesize_ps-cn-250_file-98.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 a92f5d1a6a5590db64f6b8ed4b8fabeff75b2e4cde71258ed22ec8ba2c9c0069 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 07:29:34,755 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 07:29:34,807 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 07:29:34,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 07:29:34,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 07:29:34,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 07:29:34,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 07:29:34,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 07:29:34,835 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 07:29:34,836 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 07:29:34,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 07:29:34,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 07:29:34,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 07:29:34,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 07:29:34,838 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 07:29:34,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 07:29:34,839 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 07:29:34,839 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 07:29:34,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 07:29:34,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 07:29:34,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 07:29:34,840 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 07:29:34,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 07:29:34,841 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 07:29:34,841 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 07:29:34,842 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 07:29:34,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 07:29:34,842 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 07:29:34,842 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 07:29:34,842 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 07:29:34,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 07:29:34,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 07:29:34,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:29:34,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 07:29:34,844 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 07:29:34,844 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 07:29:34,844 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 07:29:34,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 07:29:34,844 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 07:29:34,844 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 07:29:34,845 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 07:29:34,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 07:29:34,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a92f5d1a6a5590db64f6b8ed4b8fabeff75b2e4cde71258ed22ec8ba2c9c0069 [2024-11-22 07:29:35,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 07:29:35,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 07:29:35,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 07:29:35,066 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 07:29:35,067 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 07:29:35,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-98.i [2024-11-22 07:29:36,327 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 07:29:36,497 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 07:29:36,498 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-98.i [2024-11-22 07:29:36,506 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c33ebc99f/d14a9727849944abb2d4856e73923717/FLAG67962d190 [2024-11-22 07:29:36,517 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c33ebc99f/d14a9727849944abb2d4856e73923717 [2024-11-22 07:29:36,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 07:29:36,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 07:29:36,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 07:29:36,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 07:29:36,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 07:29:36,526 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:29:36" (1/1) ... [2024-11-22 07:29:36,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5060130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:29:36, skipping insertion in model container [2024-11-22 07:29:36,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:29:36" (1/1) ... [2024-11-22 07:29:36,561 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 07:29:36,686 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_fillercode_fillercodesize_ps-cn-250_file-98.i[916,929] [2024-11-22 07:29:36,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:29:36,845 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 07:29:36,855 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_fillercode_fillercodesize_ps-cn-250_file-98.i[916,929] [2024-11-22 07:29:36,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:29:36,939 INFO L204 MainTranslator]: Completed translation [2024-11-22 07:29:36,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:29:36 WrapperNode [2024-11-22 07:29:36,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 07:29:36,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 07:29:36,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 07:29:36,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 07:29:36,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:29:36" (1/1) ... [2024-11-22 07:29:36,960 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:29:36" (1/1) ... [2024-11-22 07:29:37,002 INFO L138 Inliner]: procedures = 26, calls = 100, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 562 [2024-11-22 07:29:37,003 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 07:29:37,004 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 07:29:37,004 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 07:29:37,004 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 07:29:37,012 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:29:36" (1/1) ... [2024-11-22 07:29:37,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:29:36" (1/1) ... [2024-11-22 07:29:37,025 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:29:36" (1/1) ... [2024-11-22 07:29:37,054 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]. [2024-11-22 07:29:37,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:29:36" (1/1) ... [2024-11-22 07:29:37,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:29:36" (1/1) ... [2024-11-22 07:29:37,071 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:29:36" (1/1) ... [2024-11-22 07:29:37,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:29:36" (1/1) ... [2024-11-22 07:29:37,086 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:29:36" (1/1) ... [2024-11-22 07:29:37,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:29:36" (1/1) ... [2024-11-22 07:29:37,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 07:29:37,099 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 07:29:37,099 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 07:29:37,099 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 07:29:37,100 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:29:36" (1/1) ... [2024-11-22 07:29:37,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:29:37,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:29:37,127 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) [2024-11-22 07:29:37,129 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 [2024-11-22 07:29:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 07:29:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 07:29:37,165 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 07:29:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 07:29:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 07:29:37,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 07:29:37,278 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 07:29:37,280 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 07:29:37,998 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-22 07:29:37,998 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 07:29:38,017 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 07:29:38,017 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 07:29:38,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:29:38 BoogieIcfgContainer [2024-11-22 07:29:38,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 07:29:38,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 07:29:38,019 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 07:29:38,023 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 07:29:38,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:29:36" (1/3) ... [2024-11-22 07:29:38,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edde67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:29:38, skipping insertion in model container [2024-11-22 07:29:38,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:29:36" (2/3) ... [2024-11-22 07:29:38,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edde67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:29:38, skipping insertion in model container [2024-11-22 07:29:38,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:29:38" (3/3) ... [2024-11-22 07:29:38,026 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-98.i [2024-11-22 07:29:38,038 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 07:29:38,038 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 07:29:38,099 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 07:29:38,105 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;@47003360, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 07:29:38,105 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 07:29:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 243 states, 153 states have (on average 1.5032679738562091) internal successors, (230), 154 states have internal predecessors, (230), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-22 07:29:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-22 07:29:38,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:29:38,137 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 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, 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, 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, 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, 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, 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] [2024-11-22 07:29:38,137 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:29:38,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:29:38,143 INFO L85 PathProgramCache]: Analyzing trace with hash -281747702, now seen corresponding path program 1 times [2024-11-22 07:29:38,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:29:38,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773094071] [2024-11-22 07:29:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:38,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:29:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 14792 trivial. 0 not checked. [2024-11-22 07:29:38,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:29:38,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773094071] [2024-11-22 07:29:38,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773094071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:29:38,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454270669] [2024-11-22 07:29:38,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:38,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:29:38,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:29:38,630 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) [2024-11-22 07:29:38,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 07:29:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:38,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 07:29:38,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:29:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 14792 trivial. 0 not checked. [2024-11-22 07:29:39,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:29:39,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454270669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:29:39,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:29:39,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 07:29:39,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563120216] [2024-11-22 07:29:39,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:29:39,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 07:29:39,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:29:39,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 07:29:39,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 07:29:39,040 INFO L87 Difference]: Start difference. First operand has 243 states, 153 states have (on average 1.5032679738562091) internal successors, (230), 154 states have internal predecessors, (230), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 2 states have call successors, (87) [2024-11-22 07:29:39,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:29:39,100 INFO L93 Difference]: Finished difference Result 476 states and 883 transitions. [2024-11-22 07:29:39,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 07:29:39,102 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 2 states have call successors, (87) Word has length 535 [2024-11-22 07:29:39,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:29:39,112 INFO L225 Difference]: With dead ends: 476 [2024-11-22 07:29:39,113 INFO L226 Difference]: Without dead ends: 236 [2024-11-22 07:29:39,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 07:29:39,127 INFO L432 NwaCegarLoop]: 389 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, 389 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 [2024-11-22 07:29:39,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:29:39,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-22 07:29:39,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2024-11-22 07:29:39,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 147 states have (on average 1.4625850340136055) internal successors, (215), 147 states have internal predecessors, (215), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-22 07:29:39,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 389 transitions. [2024-11-22 07:29:39,200 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 389 transitions. Word has length 535 [2024-11-22 07:29:39,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:29:39,201 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 389 transitions. [2024-11-22 07:29:39,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 2 states have call successors, (87) [2024-11-22 07:29:39,202 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 389 transitions. [2024-11-22 07:29:39,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-22 07:29:39,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:29:39,214 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 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, 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, 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, 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, 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, 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] [2024-11-22 07:29:39,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 07:29:39,418 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 [2024-11-22 07:29:39,419 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:29:39,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:29:39,420 INFO L85 PathProgramCache]: Analyzing trace with hash 825818057, now seen corresponding path program 1 times [2024-11-22 07:29:39,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:29:39,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482240104] [2024-11-22 07:29:39,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:39,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:29:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:40,601 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 07:29:40,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:29:40,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482240104] [2024-11-22 07:29:40,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482240104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:29:40,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:29:40,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:29:40,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491820644] [2024-11-22 07:29:40,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:29:40,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:29:40,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:29:40,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:29:40,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:29:40,609 INFO L87 Difference]: Start difference. First operand 236 states and 389 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 07:29:40,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:29:40,662 INFO L93 Difference]: Finished difference Result 470 states and 777 transitions. [2024-11-22 07:29:40,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:29:40,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 536 [2024-11-22 07:29:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:29:40,668 INFO L225 Difference]: With dead ends: 470 [2024-11-22 07:29:40,669 INFO L226 Difference]: Without dead ends: 237 [2024-11-22 07:29:40,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:29:40,672 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 0 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:29:40,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 770 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:29:40,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-22 07:29:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2024-11-22 07:29:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 148 states have (on average 1.4594594594594594) internal successors, (216), 148 states have internal predecessors, (216), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-22 07:29:40,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 390 transitions. [2024-11-22 07:29:40,701 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 390 transitions. Word has length 536 [2024-11-22 07:29:40,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:29:40,705 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 390 transitions. [2024-11-22 07:29:40,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 07:29:40,707 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 390 transitions. [2024-11-22 07:29:40,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-22 07:29:40,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:29:40,711 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 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, 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, 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, 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, 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, 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] [2024-11-22 07:29:40,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 07:29:40,712 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:29:40,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:29:40,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1195850769, now seen corresponding path program 1 times [2024-11-22 07:29:40,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:29:40,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583212931] [2024-11-22 07:29:40,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:40,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:29:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:41,457 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 07:29:41,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:29:41,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583212931] [2024-11-22 07:29:41,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583212931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:29:41,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:29:41,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:29:41,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073319131] [2024-11-22 07:29:41,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:29:41,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:29:41,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:29:41,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:29:41,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:29:41,464 INFO L87 Difference]: Start difference. First operand 237 states and 390 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 07:29:41,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:29:41,613 INFO L93 Difference]: Finished difference Result 682 states and 1129 transitions. [2024-11-22 07:29:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:29:41,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 536 [2024-11-22 07:29:41,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:29:41,621 INFO L225 Difference]: With dead ends: 682 [2024-11-22 07:29:41,621 INFO L226 Difference]: Without dead ends: 448 [2024-11-22 07:29:41,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:29:41,623 INFO L432 NwaCegarLoop]: 720 mSDtfsCounter, 381 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 07:29:41,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1071 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 07:29:41,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-11-22 07:29:41,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 237. [2024-11-22 07:29:41,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 148 states have (on average 1.4527027027027026) internal successors, (215), 148 states have internal predecessors, (215), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-22 07:29:41,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 389 transitions. [2024-11-22 07:29:41,662 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 389 transitions. Word has length 536 [2024-11-22 07:29:41,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:29:41,664 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 389 transitions. [2024-11-22 07:29:41,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 07:29:41,665 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 389 transitions. [2024-11-22 07:29:41,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-22 07:29:41,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:29:41,670 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 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, 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, 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, 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, 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, 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] [2024-11-22 07:29:41,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 07:29:41,670 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:29:41,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:29:41,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1454016207, now seen corresponding path program 1 times [2024-11-22 07:29:41,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:29:41,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41737605] [2024-11-22 07:29:41,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:41,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:29:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-22 07:29:43,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:29:43,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41737605] [2024-11-22 07:29:43,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41737605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:29:43,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:29:43,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 07:29:43,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477072747] [2024-11-22 07:29:43,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:29:43,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 07:29:43,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:29:43,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 07:29:43,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 07:29:43,522 INFO L87 Difference]: Start difference. First operand 237 states and 389 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 07:29:44,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:29:44,554 INFO L93 Difference]: Finished difference Result 964 states and 1583 transitions. [2024-11-22 07:29:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 07:29:44,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 536 [2024-11-22 07:29:44,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:29:44,562 INFO L225 Difference]: With dead ends: 964 [2024-11-22 07:29:44,562 INFO L226 Difference]: Without dead ends: 730 [2024-11-22 07:29:44,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-22 07:29:44,564 INFO L432 NwaCegarLoop]: 717 mSDtfsCounter, 1020 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 07:29:44,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 2320 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 07:29:44,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-11-22 07:29:44,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 512. [2024-11-22 07:29:44,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 314 states have (on average 1.4331210191082802) internal successors, (450), 315 states have internal predecessors, (450), 194 states have call successors, (194), 3 states have call predecessors, (194), 3 states have return successors, (194), 193 states have call predecessors, (194), 194 states have call successors, (194) [2024-11-22 07:29:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 838 transitions. [2024-11-22 07:29:44,656 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 838 transitions. Word has length 536 [2024-11-22 07:29:44,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:29:44,657 INFO L471 AbstractCegarLoop]: Abstraction has 512 states and 838 transitions. [2024-11-22 07:29:44,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-22 07:29:44,658 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 838 transitions. [2024-11-22 07:29:44,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-22 07:29:44,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:29:44,661 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 87, 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, 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, 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, 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, 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, 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] [2024-11-22 07:29:44,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 07:29:44,661 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:29:44,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:29:44,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1065943727, now seen corresponding path program 1 times [2024-11-22 07:29:44,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:29:44,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532001980] [2024-11-22 07:29:44,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:44,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:29:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat