./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-45.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_fillercode_fillercodesize_ps-cn-250_file-45.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 ad2fb0f87fb0b281072794eb7cd46dfb553a056ca9f2e2f18210a48553fd4c11 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:32:25,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:32:25,099 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:32:25,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:32:25,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:32:25,126 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:32:25,127 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:32:25,127 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:32:25,128 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:32:25,129 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:32:25,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:32:25,130 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:32:25,130 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:32:25,130 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:32:25,132 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:32:25,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:32:25,132 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:32:25,134 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:32:25,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:32:25,135 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:32:25,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:32:25,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:32:25,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:32:25,136 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:32:25,136 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:32:25,136 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:32:25,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:32:25,136 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:32:25,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:32:25,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:32:25,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:32:25,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:32:25,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:32:25,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:32:25,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:32:25,139 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:32:25,139 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:32:25,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:32:25,139 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:32:25,139 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:32:25,140 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:32:25,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:32:25,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad2fb0f87fb0b281072794eb7cd46dfb553a056ca9f2e2f18210a48553fd4c11 [2024-11-18 19:32:25,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:32:25,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:32:25,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:32:25,376 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:32:25,376 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:32:25,377 INFO L431 ainManager$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-45.i [2024-11-18 19:32:26,651 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:32:26,874 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:32:26,875 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-45.i [2024-11-18 19:32:26,887 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/793a97973/50e1cc9a4b7243e38e74c459375e6342/FLAG3499ed59e [2024-11-18 19:32:26,898 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/793a97973/50e1cc9a4b7243e38e74c459375e6342 [2024-11-18 19:32:26,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:32:26,902 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:32:26,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:32:26,902 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:32:26,907 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:32:26,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:32:26" (1/1) ... [2024-11-18 19:32:26,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d5e1f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:26, skipping insertion in model container [2024-11-18 19:32:26,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:32:26" (1/1) ... [2024-11-18 19:32:26,947 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:32:27,088 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-45.i[916,929] [2024-11-18 19:32:27,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:32:27,212 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:32:27,222 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-45.i[916,929] [2024-11-18 19:32:27,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:32:27,307 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:32:27,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:27 WrapperNode [2024-11-18 19:32:27,308 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:32:27,309 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:32:27,309 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:32:27,309 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:32:27,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:27" (1/1) ... [2024-11-18 19:32:27,331 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:27" (1/1) ... [2024-11-18 19:32:27,385 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 488 [2024-11-18 19:32:27,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:32:27,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:32:27,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:32:27,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:32:27,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:27" (1/1) ... [2024-11-18 19:32:27,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:27" (1/1) ... [2024-11-18 19:32:27,401 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:27" (1/1) ... [2024-11-18 19:32:27,438 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 19:32:27,438 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:27" (1/1) ... [2024-11-18 19:32:27,438 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:27" (1/1) ... [2024-11-18 19:32:27,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:27" (1/1) ... [2024-11-18 19:32:27,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:27" (1/1) ... [2024-11-18 19:32:27,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:27" (1/1) ... [2024-11-18 19:32:27,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:27" (1/1) ... [2024-11-18 19:32:27,484 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:32:27,485 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:32:27,485 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:32:27,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:32:27,486 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:27" (1/1) ... [2024-11-18 19:32:27,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:32:27,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:32:27,536 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 19:32:27,539 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 19:32:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:32:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:32:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:32:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:32:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:32:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:32:27,691 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:32:27,694 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:32:28,352 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-18 19:32:28,352 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:32:28,369 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:32:28,369 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 19:32:28,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:28 BoogieIcfgContainer [2024-11-18 19:32:28,370 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:32:28,371 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:32:28,371 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:32:28,374 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:32:28,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:32:26" (1/3) ... [2024-11-18 19:32:28,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c92036f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:28, skipping insertion in model container [2024-11-18 19:32:28,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:27" (2/3) ... [2024-11-18 19:32:28,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c92036f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:28, skipping insertion in model container [2024-11-18 19:32:28,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:28" (3/3) ... [2024-11-18 19:32:28,376 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-45.i [2024-11-18 19:32:28,392 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:32:28,392 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:32:28,444 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:32:28,449 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;@73c0bc13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:32:28,449 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:32:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 142 states have (on average 1.5422535211267605) internal successors, (219), 143 states have internal predecessors, (219), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-18 19:32:28,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-11-18 19:32:28,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:28,480 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:28,481 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:28,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:28,486 INFO L85 PathProgramCache]: Analyzing trace with hash -409694079, now seen corresponding path program 1 times [2024-11-18 19:32:28,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:28,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118123209] [2024-11-18 19:32:28,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:28,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2024-11-18 19:32:28,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:28,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118123209] [2024-11-18 19:32:28,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118123209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:32:28,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209870074] [2024-11-18 19:32:28,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:28,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:32:28,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:32:28,968 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 19:32:28,969 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 19:32:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:29,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 19:32:29,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:32:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2024-11-18 19:32:29,327 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 19:32:29,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209870074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:29,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:32:29,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 19:32:29,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671301173] [2024-11-18 19:32:29,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:29,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:32:29,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:29,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:32:29,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:32:29,371 INFO L87 Difference]: Start difference. First operand has 212 states, 142 states have (on average 1.5422535211267605) internal successors, (219), 143 states have internal predecessors, (219), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2024-11-18 19:32:29,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:29,411 INFO L93 Difference]: Finished difference Result 417 states and 767 transitions. [2024-11-18 19:32:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:32:29,414 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) Word has length 428 [2024-11-18 19:32:29,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:29,423 INFO L225 Difference]: With dead ends: 417 [2024-11-18 19:32:29,424 INFO L226 Difference]: Without dead ends: 208 [2024-11-18 19:32:29,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 429 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 19:32:29,432 INFO L432 NwaCegarLoop]: 346 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, 346 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 19:32:29,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:32:29,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-18 19:32:29,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-11-18 19:32:29,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 139 states have (on average 1.525179856115108) internal successors, (212), 139 states have internal predecessors, (212), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-18 19:32:29,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 346 transitions. [2024-11-18 19:32:29,493 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 346 transitions. Word has length 428 [2024-11-18 19:32:29,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:29,493 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 346 transitions. [2024-11-18 19:32:29,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2024-11-18 19:32:29,494 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 346 transitions. [2024-11-18 19:32:29,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-11-18 19:32:29,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:29,506 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:29,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 19:32:29,710 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 19:32:29,711 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:29,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:29,713 INFO L85 PathProgramCache]: Analyzing trace with hash 947689719, now seen corresponding path program 1 times [2024-11-18 19:32:29,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:29,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251675810] [2024-11-18 19:32:29,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:29,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:32:30,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:30,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251675810] [2024-11-18 19:32:30,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251675810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:30,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:32:30,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:32:30,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624618543] [2024-11-18 19:32:30,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:30,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:32:30,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:30,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:32:30,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:32:30,007 INFO L87 Difference]: Start difference. First operand 208 states and 346 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:32:30,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:30,083 INFO L93 Difference]: Finished difference Result 531 states and 889 transitions. [2024-11-18 19:32:30,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:32:30,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 428 [2024-11-18 19:32:30,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:30,091 INFO L225 Difference]: With dead ends: 531 [2024-11-18 19:32:30,091 INFO L226 Difference]: Without dead ends: 326 [2024-11-18 19:32:30,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:32:30,093 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 203 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:30,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 768 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:32:30,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-18 19:32:30,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 323. [2024-11-18 19:32:30,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 237 states have (on average 1.5822784810126582) internal successors, (375), 238 states have internal predecessors, (375), 83 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (83), 82 states have call predecessors, (83), 83 states have call successors, (83) [2024-11-18 19:32:30,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 541 transitions. [2024-11-18 19:32:30,138 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 541 transitions. Word has length 428 [2024-11-18 19:32:30,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:30,140 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 541 transitions. [2024-11-18 19:32:30,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:32:30,141 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 541 transitions. [2024-11-18 19:32:30,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-11-18 19:32:30,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:30,147 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:30,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:32:30,147 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:30,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:30,148 INFO L85 PathProgramCache]: Analyzing trace with hash 932171001, now seen corresponding path program 1 times [2024-11-18 19:32:30,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:30,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762576418] [2024-11-18 19:32:30,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:30,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:32:30,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:30,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762576418] [2024-11-18 19:32:30,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762576418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:30,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:32:30,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:32:30,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194653934] [2024-11-18 19:32:30,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:30,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:32:30,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:30,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:32:30,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:32:30,351 INFO L87 Difference]: Start difference. First operand 323 states and 541 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:32:30,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:30,406 INFO L93 Difference]: Finished difference Result 650 states and 1084 transitions. [2024-11-18 19:32:30,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:32:30,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 428 [2024-11-18 19:32:30,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:30,411 INFO L225 Difference]: With dead ends: 650 [2024-11-18 19:32:30,412 INFO L226 Difference]: Without dead ends: 330 [2024-11-18 19:32:30,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:32:30,414 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 167 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:30,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 720 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:32:30,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-18 19:32:30,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 258. [2024-11-18 19:32:30,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 188 states have (on average 1.5585106382978724) internal successors, (293), 188 states have internal predecessors, (293), 67 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-18 19:32:30,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 427 transitions. [2024-11-18 19:32:30,443 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 427 transitions. Word has length 428 [2024-11-18 19:32:30,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:30,444 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 427 transitions. [2024-11-18 19:32:30,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:32:30,445 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 427 transitions. [2024-11-18 19:32:30,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-11-18 19:32:30,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:30,453 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:30,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 19:32:30,453 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:30,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:30,454 INFO L85 PathProgramCache]: Analyzing trace with hash 114522551, now seen corresponding path program 1 times [2024-11-18 19:32:30,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:30,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177921122] [2024-11-18 19:32:30,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:30,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:32:30,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:30,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177921122] [2024-11-18 19:32:30,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177921122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:30,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:32:30,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:32:30,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259576894] [2024-11-18 19:32:30,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:30,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:32:30,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:30,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:32:30,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:32:30,654 INFO L87 Difference]: Start difference. First operand 258 states and 427 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:32:30,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:30,703 INFO L93 Difference]: Finished difference Result 765 states and 1269 transitions. [2024-11-18 19:32:30,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:32:30,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 428 [2024-11-18 19:32:30,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:30,710 INFO L225 Difference]: With dead ends: 765 [2024-11-18 19:32:30,712 INFO L226 Difference]: Without dead ends: 510 [2024-11-18 19:32:30,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:32:30,714 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 335 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:30,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 679 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:32:30,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-11-18 19:32:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 508. [2024-11-18 19:32:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 369 states have (on average 1.5528455284552845) internal successors, (573), 369 states have internal predecessors, (573), 134 states have call successors, (134), 4 states have call predecessors, (134), 4 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2024-11-18 19:32:30,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 841 transitions. [2024-11-18 19:32:30,762 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 841 transitions. Word has length 428 [2024-11-18 19:32:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:30,763 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 841 transitions. [2024-11-18 19:32:30,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:32:30,764 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 841 transitions. [2024-11-18 19:32:30,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-11-18 19:32:30,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:30,770 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:30,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 19:32:30,771 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:30,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:30,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1150255895, now seen corresponding path program 1 times [2024-11-18 19:32:30,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:30,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566130974] [2024-11-18 19:32:30,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:30,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:32:43,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:43,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566130974] [2024-11-18 19:32:43,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566130974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:43,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:32:43,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:32:43,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216734740] [2024-11-18 19:32:43,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:43,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:32:43,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:43,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:32:43,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:32:43,946 INFO L87 Difference]: Start difference. First operand 508 states and 841 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:32:44,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:44,277 INFO L93 Difference]: Finished difference Result 1134 states and 1844 transitions. [2024-11-18 19:32:44,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 19:32:44,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 429 [2024-11-18 19:32:44,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:44,282 INFO L225 Difference]: With dead ends: 1134 [2024-11-18 19:32:44,282 INFO L226 Difference]: Without dead ends: 629 [2024-11-18 19:32:44,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:32:44,284 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 82 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:44,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 748 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:32:44,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2024-11-18 19:32:44,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 578. [2024-11-18 19:32:44,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 421 states have (on average 1.520190023752969) internal successors, (640), 423 states have internal predecessors, (640), 150 states have call successors, (150), 6 states have call predecessors, (150), 6 states have return successors, (150), 148 states have call predecessors, (150), 150 states have call successors, (150) [2024-11-18 19:32:44,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 940 transitions. [2024-11-18 19:32:44,334 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 940 transitions. Word has length 429 [2024-11-18 19:32:44,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:44,335 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 940 transitions. [2024-11-18 19:32:44,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:32:44,335 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 940 transitions. [2024-11-18 19:32:44,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-11-18 19:32:44,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:44,340 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:44,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 19:32:44,341 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:44,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:44,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1959602521, now seen corresponding path program 1 times [2024-11-18 19:32:44,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:44,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761427312] [2024-11-18 19:32:44,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:44,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:32:46,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:46,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761427312] [2024-11-18 19:32:46,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761427312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:46,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:32:46,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:32:46,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387207683] [2024-11-18 19:32:46,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:46,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:32:46,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:46,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:32:46,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:32:46,041 INFO L87 Difference]: Start difference. First operand 578 states and 940 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:32:46,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:46,367 INFO L93 Difference]: Finished difference Result 1204 states and 1942 transitions. [2024-11-18 19:32:46,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 19:32:46,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 429 [2024-11-18 19:32:46,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:46,371 INFO L225 Difference]: With dead ends: 1204 [2024-11-18 19:32:46,371 INFO L226 Difference]: Without dead ends: 629 [2024-11-18 19:32:46,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:32:46,373 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 77 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:46,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1391 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:32:46,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2024-11-18 19:32:46,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 573. [2024-11-18 19:32:46,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 416 states have (on average 1.5216346153846154) internal successors, (633), 418 states have internal predecessors, (633), 150 states have call successors, (150), 6 states have call predecessors, (150), 6 states have return successors, (150), 148 states have call predecessors, (150), 150 states have call successors, (150) [2024-11-18 19:32:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 933 transitions. [2024-11-18 19:32:46,432 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 933 transitions. Word has length 429 [2024-11-18 19:32:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:46,434 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 933 transitions. [2024-11-18 19:32:46,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:32:46,434 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 933 transitions. [2024-11-18 19:32:46,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-11-18 19:32:46,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:46,436 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:46,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 19:32:46,437 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:46,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:46,437 INFO L85 PathProgramCache]: Analyzing trace with hash 597561841, now seen corresponding path program 1 times [2024-11-18 19:32:46,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:46,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992403521] [2024-11-18 19:32:46,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:46,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:46,939 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:32:46,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:46,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992403521] [2024-11-18 19:32:46,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992403521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:46,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:32:46,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:32:46,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129625812] [2024-11-18 19:32:46,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:46,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:32:46,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:46,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:32:46,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:32:46,944 INFO L87 Difference]: Start difference. First operand 573 states and 933 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:32:47,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:47,259 INFO L93 Difference]: Finished difference Result 2145 states and 3487 transitions. [2024-11-18 19:32:47,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:32:47,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 429 [2024-11-18 19:32:47,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:47,269 INFO L225 Difference]: With dead ends: 2145 [2024-11-18 19:32:47,270 INFO L226 Difference]: Without dead ends: 1575 [2024-11-18 19:32:47,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:32:47,272 INFO L432 NwaCegarLoop]: 560 mSDtfsCounter, 553 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:47,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1250 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 19:32:47,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2024-11-18 19:32:47,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1569. [2024-11-18 19:32:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1140 states have (on average 1.5166666666666666) internal successors, (1729), 1148 states have internal predecessors, (1729), 410 states have call successors, (410), 18 states have call predecessors, (410), 18 states have return successors, (410), 402 states have call predecessors, (410), 410 states have call successors, (410) [2024-11-18 19:32:47,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2549 transitions. [2024-11-18 19:32:47,389 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2549 transitions. Word has length 429 [2024-11-18 19:32:47,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:47,389 INFO L471 AbstractCegarLoop]: Abstraction has 1569 states and 2549 transitions. [2024-11-18 19:32:47,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:32:47,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2549 transitions. [2024-11-18 19:32:47,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-11-18 19:32:47,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:47,392 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:47,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 19:32:47,393 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:47,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:47,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1396582865, now seen corresponding path program 1 times [2024-11-18 19:32:47,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:47,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033739137] [2024-11-18 19:32:47,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:47,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:32:48,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:48,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033739137] [2024-11-18 19:32:48,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033739137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:48,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:32:48,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 19:32:48,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271489546] [2024-11-18 19:32:48,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:48,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 19:32:48,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:48,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 19:32:48,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:32:48,686 INFO L87 Difference]: Start difference. First operand 1569 states and 2549 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:32:50,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:50,289 INFO L93 Difference]: Finished difference Result 6203 states and 9973 transitions. [2024-11-18 19:32:50,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 19:32:50,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 429 [2024-11-18 19:32:50,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:50,312 INFO L225 Difference]: With dead ends: 6203 [2024-11-18 19:32:50,313 INFO L226 Difference]: Without dead ends: 4637 [2024-11-18 19:32:50,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-18 19:32:50,321 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 1016 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:50,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 1759 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 19:32:50,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4637 states. [2024-11-18 19:32:50,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4637 to 3113. [2024-11-18 19:32:50,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3113 states, 2474 states have (on average 1.5812449474535166) internal successors, (3912), 2494 states have internal predecessors, (3912), 602 states have call successors, (602), 36 states have call predecessors, (602), 36 states have return successors, (602), 582 states have call predecessors, (602), 602 states have call successors, (602) [2024-11-18 19:32:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3113 states to 3113 states and 5116 transitions. [2024-11-18 19:32:50,632 INFO L78 Accepts]: Start accepts. Automaton has 3113 states and 5116 transitions. Word has length 429 [2024-11-18 19:32:50,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:50,632 INFO L471 AbstractCegarLoop]: Abstraction has 3113 states and 5116 transitions. [2024-11-18 19:32:50,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:32:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3113 states and 5116 transitions. [2024-11-18 19:32:50,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-11-18 19:32:50,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:50,636 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:50,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 19:32:50,636 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:50,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:50,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1092946097, now seen corresponding path program 1 times [2024-11-18 19:32:50,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:50,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040597915] [2024-11-18 19:32:50,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:50,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:32:52,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:52,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040597915] [2024-11-18 19:32:52,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040597915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:52,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:32:52,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:32:52,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722471193] [2024-11-18 19:32:52,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:52,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:32:52,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:52,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:32:52,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:32:52,062 INFO L87 Difference]: Start difference. First operand 3113 states and 5116 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:32:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:53,181 INFO L93 Difference]: Finished difference Result 8637 states and 14088 transitions. [2024-11-18 19:32:53,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 19:32:53,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 429 [2024-11-18 19:32:53,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:53,209 INFO L225 Difference]: With dead ends: 8637 [2024-11-18 19:32:53,209 INFO L226 Difference]: Without dead ends: 5527 [2024-11-18 19:32:53,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:32:53,220 INFO L432 NwaCegarLoop]: 519 mSDtfsCounter, 389 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:53,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 1171 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 19:32:53,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5527 states. [2024-11-18 19:32:53,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5527 to 5257. [2024-11-18 19:32:53,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 3974 states have (on average 1.5244086562657273) internal successors, (6058), 4018 states have internal predecessors, (6058), 1204 states have call successors, (1204), 78 states have call predecessors, (1204), 78 states have return successors, (1204), 1160 states have call predecessors, (1204), 1204 states have call successors, (1204) [2024-11-18 19:32:53,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 8466 transitions. [2024-11-18 19:32:53,984 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 8466 transitions. Word has length 429 [2024-11-18 19:32:53,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:53,985 INFO L471 AbstractCegarLoop]: Abstraction has 5257 states and 8466 transitions. [2024-11-18 19:32:53,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:32:53,985 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 8466 transitions. [2024-11-18 19:32:53,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-11-18 19:32:53,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:53,990 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:53,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 19:32:53,991 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:53,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1906055955, now seen corresponding path program 1 times [2024-11-18 19:32:53,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:53,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372625342] [2024-11-18 19:32:53,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:53,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat