./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label16.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label16.c -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 f36a525a226086cc938e65ee46daa868faf1a89b705080609babafb304ea1cb5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:20:32,278 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:20:32,348 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:20:32,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:20:32,355 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:20:32,369 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:20:32,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:20:32,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:20:32,370 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:20:32,370 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:20:32,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:20:32,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:20:32,372 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:20:32,372 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:20:32,372 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:20:32,372 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:20:32,372 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:20:32,373 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:20:32,373 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:20:32,373 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:20:32,373 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:20:32,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:20:32,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:20:32,376 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:20:32,377 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:20:32,377 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:20:32,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:20:32,377 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:20:32,377 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:20:32,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:20:32,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:20:32,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:20:32,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:20:32,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:20:32,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:20:32,378 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:20:32,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:20:32,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:20:32,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:20:32,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:20:32,379 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:20:32,382 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:20:32,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f36a525a226086cc938e65ee46daa868faf1a89b705080609babafb304ea1cb5 [2024-10-23 21:20:32,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:20:32,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:20:32,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:20:32,584 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:20:32,585 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:20:32,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label16.c [2024-10-23 21:20:33,775 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:20:34,035 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:20:34,035 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label16.c [2024-10-23 21:20:34,054 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/097dd6e8b/4a5b66c083e1430282f68354962521bc/FLAG2dc6d55b1 [2024-10-23 21:20:34,340 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/097dd6e8b/4a5b66c083e1430282f68354962521bc [2024-10-23 21:20:34,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:20:34,344 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:20:34,346 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:20:34,346 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:20:34,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:20:34,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:20:34" (1/1) ... [2024-10-23 21:20:34,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1044b4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:20:34, skipping insertion in model container [2024-10-23 21:20:34,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:20:34" (1/1) ... [2024-10-23 21:20:34,399 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:20:34,615 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label16.c[7550,7563] [2024-10-23 21:20:34,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:20:34,880 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:20:34,905 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label16.c[7550,7563] [2024-10-23 21:20:35,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:20:35,092 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:20:35,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:20:35 WrapperNode [2024-10-23 21:20:35,093 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:20:35,094 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:20:35,094 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:20:35,094 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:20:35,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:20:35" (1/1) ... [2024-10-23 21:20:35,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:20:35" (1/1) ... [2024-10-23 21:20:35,235 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1760 [2024-10-23 21:20:35,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:20:35,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:20:35,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:20:35,237 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:20:35,245 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:20:35" (1/1) ... [2024-10-23 21:20:35,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:20:35" (1/1) ... [2024-10-23 21:20:35,261 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:20:35" (1/1) ... [2024-10-23 21:20:35,374 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]. [2024-10-23 21:20:35,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:20:35" (1/1) ... [2024-10-23 21:20:35,375 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:20:35" (1/1) ... [2024-10-23 21:20:35,439 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:20:35" (1/1) ... [2024-10-23 21:20:35,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:20:35" (1/1) ... [2024-10-23 21:20:35,460 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:20:35" (1/1) ... [2024-10-23 21:20:35,473 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:20:35" (1/1) ... [2024-10-23 21:20:35,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:20:35,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:20:35,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:20:35,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:20:35,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:20:35" (1/1) ... [2024-10-23 21:20:35,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:20:35,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:20:35,517 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) [2024-10-23 21:20:35,519 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 [2024-10-23 21:20:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:20:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:20:35,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:20:35,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:20:35,605 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:20:35,606 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:20:37,251 INFO L? ?]: Removed 246 outVars from TransFormulas that were not future-live. [2024-10-23 21:20:37,251 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:20:37,298 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:20:37,298 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:20:37,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:20:37 BoogieIcfgContainer [2024-10-23 21:20:37,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:20:37,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:20:37,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:20:37,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:20:37,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:20:34" (1/3) ... [2024-10-23 21:20:37,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfccd3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:20:37, skipping insertion in model container [2024-10-23 21:20:37,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:20:35" (2/3) ... [2024-10-23 21:20:37,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfccd3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:20:37, skipping insertion in model container [2024-10-23 21:20:37,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:20:37" (3/3) ... [2024-10-23 21:20:37,306 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label16.c [2024-10-23 21:20:37,318 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:20:37,319 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:20:37,378 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:20:37,383 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;@36a263bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:20:37,384 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:20:37,388 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:37,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-23 21:20:37,394 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:37,395 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:37,396 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:37,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:37,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1767584699, now seen corresponding path program 1 times [2024-10-23 21:20:37,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:37,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923326415] [2024-10-23 21:20:37,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:37,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:20:37,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:37,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923326415] [2024-10-23 21:20:37,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923326415] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:37,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:37,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:20:37,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378627054] [2024-10-23 21:20:37,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:37,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:20:37,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:37,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:20:37,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:20:37,590 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:37,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:37,628 INFO L93 Difference]: Finished difference Result 723 states and 1375 transitions. [2024-10-23 21:20:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:20:37,634 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-23 21:20:37,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:37,644 INFO L225 Difference]: With dead ends: 723 [2024-10-23 21:20:37,644 INFO L226 Difference]: Without dead ends: 360 [2024-10-23 21:20:37,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:20:37,652 INFO L432 NwaCegarLoop]: 623 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:37,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:20:37,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-10-23 21:20:37,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-10-23 21:20:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.7353760445682451) internal successors, (623), 359 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:37,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 623 transitions. [2024-10-23 21:20:37,699 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 623 transitions. Word has length 61 [2024-10-23 21:20:37,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:37,699 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 623 transitions. [2024-10-23 21:20:37,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:37,699 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 623 transitions. [2024-10-23 21:20:37,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-23 21:20:37,704 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:37,704 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:37,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:20:37,704 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:37,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:37,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1215481616, now seen corresponding path program 1 times [2024-10-23 21:20:37,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:37,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471839912] [2024-10-23 21:20:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:37,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:37,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:20:37,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:37,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471839912] [2024-10-23 21:20:37,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471839912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:37,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:37,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:20:37,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078736223] [2024-10-23 21:20:37,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:37,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:37,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:37,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:37,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:37,897 INFO L87 Difference]: Start difference. First operand 360 states and 623 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:39,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:39,300 INFO L93 Difference]: Finished difference Result 1025 states and 1788 transitions. [2024-10-23 21:20:39,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:39,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-23 21:20:39,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:39,304 INFO L225 Difference]: With dead ends: 1025 [2024-10-23 21:20:39,304 INFO L226 Difference]: Without dead ends: 666 [2024-10-23 21:20:39,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:39,306 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 266 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:39,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 316 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:20:39,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-10-23 21:20:39,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 664. [2024-10-23 21:20:39,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 1.4796380090497738) internal successors, (981), 663 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:39,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 981 transitions. [2024-10-23 21:20:39,328 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 981 transitions. Word has length 61 [2024-10-23 21:20:39,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:39,332 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 981 transitions. [2024-10-23 21:20:39,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:39,332 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 981 transitions. [2024-10-23 21:20:39,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-10-23 21:20:39,334 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:39,334 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:39,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:20:39,334 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:39,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:39,335 INFO L85 PathProgramCache]: Analyzing trace with hash -819748257, now seen corresponding path program 1 times [2024-10-23 21:20:39,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:39,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064325594] [2024-10-23 21:20:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:39,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:39,488 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:20:39,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:39,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064325594] [2024-10-23 21:20:39,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064325594] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:39,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:39,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:20:39,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551688766] [2024-10-23 21:20:39,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:39,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:39,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:39,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:39,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:39,491 INFO L87 Difference]: Start difference. First operand 664 states and 981 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:41,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:41,006 INFO L93 Difference]: Finished difference Result 1954 states and 2893 transitions. [2024-10-23 21:20:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:41,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2024-10-23 21:20:41,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:41,010 INFO L225 Difference]: With dead ends: 1954 [2024-10-23 21:20:41,010 INFO L226 Difference]: Without dead ends: 1291 [2024-10-23 21:20:41,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:41,012 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 258 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:41,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 325 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:20:41,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2024-10-23 21:20:41,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1281. [2024-10-23 21:20:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 1.39921875) internal successors, (1791), 1280 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1791 transitions. [2024-10-23 21:20:41,033 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1791 transitions. Word has length 136 [2024-10-23 21:20:41,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:41,034 INFO L471 AbstractCegarLoop]: Abstraction has 1281 states and 1791 transitions. [2024-10-23 21:20:41,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:41,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1791 transitions. [2024-10-23 21:20:41,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-23 21:20:41,036 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:41,036 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:41,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:20:41,036 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:41,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:41,037 INFO L85 PathProgramCache]: Analyzing trace with hash -868315755, now seen corresponding path program 1 times [2024-10-23 21:20:41,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:41,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890447281] [2024-10-23 21:20:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:41,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:41,185 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:20:41,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:41,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890447281] [2024-10-23 21:20:41,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890447281] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:41,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:41,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:20:41,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271044015] [2024-10-23 21:20:41,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:41,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:41,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:41,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:41,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:41,186 INFO L87 Difference]: Start difference. First operand 1281 states and 1791 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:42,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:42,544 INFO L93 Difference]: Finished difference Result 3763 states and 5262 transitions. [2024-10-23 21:20:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:42,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2024-10-23 21:20:42,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:42,552 INFO L225 Difference]: With dead ends: 3763 [2024-10-23 21:20:42,552 INFO L226 Difference]: Without dead ends: 2483 [2024-10-23 21:20:42,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:42,555 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 236 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:42,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 364 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:20:42,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2024-10-23 21:20:42,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2181. [2024-10-23 21:20:42,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.281651376146789) internal successors, (2794), 2180 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:42,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 2794 transitions. [2024-10-23 21:20:42,591 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 2794 transitions. Word has length 140 [2024-10-23 21:20:42,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:42,592 INFO L471 AbstractCegarLoop]: Abstraction has 2181 states and 2794 transitions. [2024-10-23 21:20:42,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:42,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 2794 transitions. [2024-10-23 21:20:42,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-10-23 21:20:42,599 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:42,599 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:42,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:20:42,599 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:42,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:42,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1752343403, now seen corresponding path program 1 times [2024-10-23 21:20:42,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:42,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249013238] [2024-10-23 21:20:42,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:42,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:42,770 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-23 21:20:42,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:42,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249013238] [2024-10-23 21:20:42,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249013238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:42,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:42,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:20:42,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427098970] [2024-10-23 21:20:42,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:42,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:42,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:42,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:42,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:42,773 INFO L87 Difference]: Start difference. First operand 2181 states and 2794 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:43,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:43,949 INFO L93 Difference]: Finished difference Result 6165 states and 7960 transitions. [2024-10-23 21:20:43,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:43,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2024-10-23 21:20:43,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:43,958 INFO L225 Difference]: With dead ends: 6165 [2024-10-23 21:20:43,958 INFO L226 Difference]: Without dead ends: 3985 [2024-10-23 21:20:43,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:43,961 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 257 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:43,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 337 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:20:43,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3985 states. [2024-10-23 21:20:43,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3985 to 3681. [2024-10-23 21:20:43,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 3680 states have (on average 1.2201086956521738) internal successors, (4490), 3680 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:43,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 4490 transitions. [2024-10-23 21:20:43,998 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 4490 transitions. Word has length 231 [2024-10-23 21:20:43,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:43,999 INFO L471 AbstractCegarLoop]: Abstraction has 3681 states and 4490 transitions. [2024-10-23 21:20:44,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:44,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 4490 transitions. [2024-10-23 21:20:44,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-10-23 21:20:44,003 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:44,003 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:44,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:20:44,004 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:44,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:44,005 INFO L85 PathProgramCache]: Analyzing trace with hash 35799643, now seen corresponding path program 1 times [2024-10-23 21:20:44,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:44,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333034260] [2024-10-23 21:20:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:44,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-23 21:20:44,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:44,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333034260] [2024-10-23 21:20:44,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333034260] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:44,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:44,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:20:44,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223060925] [2024-10-23 21:20:44,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:44,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:44,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:44,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:44,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:44,575 INFO L87 Difference]: Start difference. First operand 3681 states and 4490 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:45,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:45,627 INFO L93 Difference]: Finished difference Result 7660 states and 9290 transitions. [2024-10-23 21:20:45,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:45,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 333 [2024-10-23 21:20:45,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:45,641 INFO L225 Difference]: With dead ends: 7660 [2024-10-23 21:20:45,641 INFO L226 Difference]: Without dead ends: 3980 [2024-10-23 21:20:45,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:45,646 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:45,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 357 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 21:20:45,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2024-10-23 21:20:45,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3980. [2024-10-23 21:20:45,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3980 states, 3979 states have (on average 1.2050766524252325) internal successors, (4795), 3979 states have internal predecessors, (4795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 4795 transitions. [2024-10-23 21:20:45,700 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 4795 transitions. Word has length 333 [2024-10-23 21:20:45,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:45,701 INFO L471 AbstractCegarLoop]: Abstraction has 3980 states and 4795 transitions. [2024-10-23 21:20:45,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:45,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 4795 transitions. [2024-10-23 21:20:45,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-10-23 21:20:45,705 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:45,705 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:45,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:20:45,706 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:45,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:45,706 INFO L85 PathProgramCache]: Analyzing trace with hash -285253664, now seen corresponding path program 1 times [2024-10-23 21:20:45,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:45,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614282074] [2024-10-23 21:20:45,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:45,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-23 21:20:45,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:45,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614282074] [2024-10-23 21:20:45,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614282074] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:45,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:45,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:20:45,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805705681] [2024-10-23 21:20:45,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:45,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:45,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:45,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:45,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:45,908 INFO L87 Difference]: Start difference. First operand 3980 states and 4795 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:47,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:47,099 INFO L93 Difference]: Finished difference Result 9464 states and 11673 transitions. [2024-10-23 21:20:47,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:47,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2024-10-23 21:20:47,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:47,112 INFO L225 Difference]: With dead ends: 9464 [2024-10-23 21:20:47,112 INFO L226 Difference]: Without dead ends: 5784 [2024-10-23 21:20:47,116 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 [2024-10-23 21:20:47,118 INFO L432 NwaCegarLoop]: 630 mSDtfsCounter, 254 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:47,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 668 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:20:47,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5784 states. [2024-10-23 21:20:47,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5784 to 5782. [2024-10-23 21:20:47,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5782 states, 5781 states have (on average 1.167618059159315) internal successors, (6750), 5781 states have internal predecessors, (6750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:47,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 6750 transitions. [2024-10-23 21:20:47,182 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 6750 transitions. Word has length 348 [2024-10-23 21:20:47,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:47,183 INFO L471 AbstractCegarLoop]: Abstraction has 5782 states and 6750 transitions. [2024-10-23 21:20:47,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:47,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 6750 transitions. [2024-10-23 21:20:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-10-23 21:20:47,187 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:47,188 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:47,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:20:47,188 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:47,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:47,189 INFO L85 PathProgramCache]: Analyzing trace with hash 429756589, now seen corresponding path program 1 times [2024-10-23 21:20:47,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:47,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655350703] [2024-10-23 21:20:47,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:47,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-23 21:20:47,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:47,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655350703] [2024-10-23 21:20:47,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655350703] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:47,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:47,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:20:47,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171304898] [2024-10-23 21:20:47,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:47,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:47,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:47,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:47,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:47,445 INFO L87 Difference]: Start difference. First operand 5782 states and 6750 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:48,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:48,597 INFO L93 Difference]: Finished difference Result 13363 states and 15909 transitions. [2024-10-23 21:20:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:48,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 407 [2024-10-23 21:20:48,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:48,617 INFO L225 Difference]: With dead ends: 13363 [2024-10-23 21:20:48,617 INFO L226 Difference]: Without dead ends: 7881 [2024-10-23 21:20:48,622 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 [2024-10-23 21:20:48,624 INFO L432 NwaCegarLoop]: 596 mSDtfsCounter, 265 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:48,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 632 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:20:48,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7881 states. [2024-10-23 21:20:48,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7881 to 7283. [2024-10-23 21:20:48,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7283 states, 7282 states have (on average 1.148722878330129) internal successors, (8365), 7282 states have internal predecessors, (8365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:48,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7283 states to 7283 states and 8365 transitions. [2024-10-23 21:20:48,738 INFO L78 Accepts]: Start accepts. Automaton has 7283 states and 8365 transitions. Word has length 407 [2024-10-23 21:20:48,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:48,739 INFO L471 AbstractCegarLoop]: Abstraction has 7283 states and 8365 transitions. [2024-10-23 21:20:48,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:48,739 INFO L276 IsEmpty]: Start isEmpty. Operand 7283 states and 8365 transitions. [2024-10-23 21:20:48,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-10-23 21:20:48,745 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:48,745 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:48,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:20:48,745 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:48,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:48,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1082496718, now seen corresponding path program 1 times [2024-10-23 21:20:48,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:48,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048678709] [2024-10-23 21:20:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:48,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-23 21:20:49,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:49,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048678709] [2024-10-23 21:20:49,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048678709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:49,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:49,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:20:49,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722601863] [2024-10-23 21:20:49,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:49,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:49,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:49,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:49,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:49,004 INFO L87 Difference]: Start difference. First operand 7283 states and 8365 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:50,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:50,015 INFO L93 Difference]: Finished difference Result 16068 states and 18813 transitions. [2024-10-23 21:20:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:50,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 422 [2024-10-23 21:20:50,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:50,047 INFO L225 Difference]: With dead ends: 16068 [2024-10-23 21:20:50,048 INFO L226 Difference]: Without dead ends: 9085 [2024-10-23 21:20:50,052 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 [2024-10-23 21:20:50,053 INFO L432 NwaCegarLoop]: 583 mSDtfsCounter, 267 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:50,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 620 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 21:20:50,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9085 states. [2024-10-23 21:20:50,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9085 to 8480. [2024-10-23 21:20:50,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8480 states, 8479 states have (on average 1.1379879702795141) internal successors, (9649), 8479 states have internal predecessors, (9649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:50,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 9649 transitions. [2024-10-23 21:20:50,127 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 9649 transitions. Word has length 422 [2024-10-23 21:20:50,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:50,127 INFO L471 AbstractCegarLoop]: Abstraction has 8480 states and 9649 transitions. [2024-10-23 21:20:50,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:50,128 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 9649 transitions. [2024-10-23 21:20:50,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-10-23 21:20:50,133 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:50,134 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:50,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:20:50,135 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:50,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:50,138 INFO L85 PathProgramCache]: Analyzing trace with hash -756978265, now seen corresponding path program 1 times [2024-10-23 21:20:50,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:50,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516364071] [2024-10-23 21:20:50,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:50,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-10-23 21:20:50,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:50,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516364071] [2024-10-23 21:20:50,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516364071] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:50,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:50,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:20:50,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446864443] [2024-10-23 21:20:50,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:50,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:50,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:50,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:50,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:50,403 INFO L87 Difference]: Start difference. First operand 8480 states and 9649 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:51,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:51,453 INFO L93 Difference]: Finished difference Result 19650 states and 22542 transitions. [2024-10-23 21:20:51,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:51,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 512 [2024-10-23 21:20:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:51,468 INFO L225 Difference]: With dead ends: 19650 [2024-10-23 21:20:51,468 INFO L226 Difference]: Without dead ends: 11470 [2024-10-23 21:20:51,474 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 [2024-10-23 21:20:51,475 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 147 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:51,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 313 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 21:20:51,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11470 states. [2024-10-23 21:20:51,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11470 to 7577. [2024-10-23 21:20:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7577 states, 7576 states have (on average 1.1486272439281944) internal successors, (8702), 7576 states have internal predecessors, (8702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:51,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7577 states to 7577 states and 8702 transitions. [2024-10-23 21:20:51,544 INFO L78 Accepts]: Start accepts. Automaton has 7577 states and 8702 transitions. Word has length 512 [2024-10-23 21:20:51,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:51,545 INFO L471 AbstractCegarLoop]: Abstraction has 7577 states and 8702 transitions. [2024-10-23 21:20:51,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:51,545 INFO L276 IsEmpty]: Start isEmpty. Operand 7577 states and 8702 transitions. [2024-10-23 21:20:51,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2024-10-23 21:20:51,548 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:51,548 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:51,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:20:51,549 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:51,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:51,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1318321159, now seen corresponding path program 1 times [2024-10-23 21:20:51,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:51,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490941117] [2024-10-23 21:20:51,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:51,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:51,981 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 529 proven. 39 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2024-10-23 21:20:51,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:51,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490941117] [2024-10-23 21:20:51,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490941117] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:20:51,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994747910] [2024-10-23 21:20:51,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:51,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:51,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:20:51,984 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) [2024-10-23 21:20:51,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:20:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:52,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:20:52,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:20:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2024-10-23 21:20:52,306 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:20:52,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994747910] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:52,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:20:52,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:20:52,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963566991] [2024-10-23 21:20:52,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:52,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:52,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:52,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:52,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:52,308 INFO L87 Difference]: Start difference. First operand 7577 states and 8702 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:53,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:53,263 INFO L93 Difference]: Finished difference Result 17245 states and 20054 transitions. [2024-10-23 21:20:53,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:53,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 545 [2024-10-23 21:20:53,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:53,277 INFO L225 Difference]: With dead ends: 17245 [2024-10-23 21:20:53,277 INFO L226 Difference]: Without dead ends: 9968 [2024-10-23 21:20:53,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:53,283 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 355 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:53,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 444 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:20:53,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9968 states. [2024-10-23 21:20:53,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9968 to 9968. [2024-10-23 21:20:53,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9968 states, 9967 states have (on average 1.1499949834453698) internal successors, (11462), 9967 states have internal predecessors, (11462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:53,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9968 states to 9968 states and 11462 transitions. [2024-10-23 21:20:53,368 INFO L78 Accepts]: Start accepts. Automaton has 9968 states and 11462 transitions. Word has length 545 [2024-10-23 21:20:53,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:53,369 INFO L471 AbstractCegarLoop]: Abstraction has 9968 states and 11462 transitions. [2024-10-23 21:20:53,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:53,369 INFO L276 IsEmpty]: Start isEmpty. Operand 9968 states and 11462 transitions. [2024-10-23 21:20:53,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2024-10-23 21:20:53,372 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:53,372 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:53,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:20:53,573 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,SelfDestructingSolverStorable10 [2024-10-23 21:20:53,573 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:53,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:53,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1444376017, now seen corresponding path program 1 times [2024-10-23 21:20:53,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:53,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652558502] [2024-10-23 21:20:53,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:53,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-10-23 21:20:53,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:53,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652558502] [2024-10-23 21:20:53,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652558502] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:53,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:53,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:20:53,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862364302] [2024-10-23 21:20:53,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:53,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:53,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:53,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:53,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:53,931 INFO L87 Difference]: Start difference. First operand 9968 states and 11462 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:55,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:55,066 INFO L93 Difference]: Finished difference Result 24135 states and 28001 transitions. [2024-10-23 21:20:55,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:55,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 549 [2024-10-23 21:20:55,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:55,083 INFO L225 Difference]: With dead ends: 24135 [2024-10-23 21:20:55,083 INFO L226 Difference]: Without dead ends: 14467 [2024-10-23 21:20:55,092 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 [2024-10-23 21:20:55,093 INFO L432 NwaCegarLoop]: 586 mSDtfsCounter, 246 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:55,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 618 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:20:55,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14467 states. [2024-10-23 21:20:55,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14467 to 14157. [2024-10-23 21:20:55,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14157 states, 14156 states have (on average 1.13485447866629) internal successors, (16065), 14156 states have internal predecessors, (16065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14157 states to 14157 states and 16065 transitions. [2024-10-23 21:20:55,255 INFO L78 Accepts]: Start accepts. Automaton has 14157 states and 16065 transitions. Word has length 549 [2024-10-23 21:20:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:55,255 INFO L471 AbstractCegarLoop]: Abstraction has 14157 states and 16065 transitions. [2024-10-23 21:20:55,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:55,256 INFO L276 IsEmpty]: Start isEmpty. Operand 14157 states and 16065 transitions. [2024-10-23 21:20:55,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2024-10-23 21:20:55,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:55,264 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:55,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:20:55,264 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:55,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:55,264 INFO L85 PathProgramCache]: Analyzing trace with hash -638126228, now seen corresponding path program 1 times [2024-10-23 21:20:55,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:55,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487551566] [2024-10-23 21:20:55,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:55,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 686 proven. 39 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2024-10-23 21:20:55,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:55,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487551566] [2024-10-23 21:20:55,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487551566] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:20:55,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161969510] [2024-10-23 21:20:55,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:55,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:55,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:20:55,764 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:20:55,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:20:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:55,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:20:55,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:20:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2024-10-23 21:20:56,009 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:20:56,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161969510] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:56,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:20:56,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:20:56,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463826499] [2024-10-23 21:20:56,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:56,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:56,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:56,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:56,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:56,011 INFO L87 Difference]: Start difference. First operand 14157 states and 16065 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:57,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:57,025 INFO L93 Difference]: Finished difference Result 27711 states and 31489 transitions. [2024-10-23 21:20:57,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:57,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 624 [2024-10-23 21:20:57,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:57,039 INFO L225 Difference]: With dead ends: 27711 [2024-10-23 21:20:57,040 INFO L226 Difference]: Without dead ends: 13854 [2024-10-23 21:20:57,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:57,050 INFO L432 NwaCegarLoop]: 565 mSDtfsCounter, 252 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:57,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 601 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:20:57,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13854 states. [2024-10-23 21:20:57,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13854 to 13853. [2024-10-23 21:20:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13853 states, 13852 states have (on average 1.081648859370488) internal successors, (14983), 13852 states have internal predecessors, (14983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:57,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13853 states to 13853 states and 14983 transitions. [2024-10-23 21:20:57,201 INFO L78 Accepts]: Start accepts. Automaton has 13853 states and 14983 transitions. Word has length 624 [2024-10-23 21:20:57,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:57,201 INFO L471 AbstractCegarLoop]: Abstraction has 13853 states and 14983 transitions. [2024-10-23 21:20:57,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:57,202 INFO L276 IsEmpty]: Start isEmpty. Operand 13853 states and 14983 transitions. [2024-10-23 21:20:57,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2024-10-23 21:20:57,211 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:57,212 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:57,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 21:20:57,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-23 21:20:57,413 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:57,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:57,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2050042470, now seen corresponding path program 1 times [2024-10-23 21:20:57,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:57,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67202205] [2024-10-23 21:20:57,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:57,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 613 proven. 39 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-10-23 21:20:57,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:57,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67202205] [2024-10-23 21:20:57,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67202205] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:20:57,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889383022] [2024-10-23 21:20:57,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:57,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:57,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:20:57,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:20:57,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 21:20:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:58,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:20:58,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:20:58,700 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 652 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-10-23 21:20:58,700 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:20:58,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889383022] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:58,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:20:58,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:20:58,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967405187] [2024-10-23 21:20:58,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:58,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:20:58,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:58,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:20:58,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:20:58,702 INFO L87 Difference]: Start difference. First operand 13853 states and 14983 transitions. Second operand has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:00,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:21:00,790 INFO L93 Difference]: Finished difference Result 28903 states and 31297 transitions. [2024-10-23 21:21:00,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:21:00,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 625 [2024-10-23 21:21:00,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:21:00,806 INFO L225 Difference]: With dead ends: 28903 [2024-10-23 21:21:00,806 INFO L226 Difference]: Without dead ends: 15051 [2024-10-23 21:21:00,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:21:00,813 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 316 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:21:00,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 386 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-23 21:21:00,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15051 states. [2024-10-23 21:21:00,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15051 to 14751. [2024-10-23 21:21:00,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14751 states, 14750 states have (on average 1.079728813559322) internal successors, (15926), 14750 states have internal predecessors, (15926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:00,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14751 states to 14751 states and 15926 transitions. [2024-10-23 21:21:00,926 INFO L78 Accepts]: Start accepts. Automaton has 14751 states and 15926 transitions. Word has length 625 [2024-10-23 21:21:00,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:21:00,927 INFO L471 AbstractCegarLoop]: Abstraction has 14751 states and 15926 transitions. [2024-10-23 21:21:00,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:00,927 INFO L276 IsEmpty]: Start isEmpty. Operand 14751 states and 15926 transitions. [2024-10-23 21:21:00,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2024-10-23 21:21:00,934 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:21:00,934 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:21:00,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 21:21:01,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:21:01,135 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:21:01,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:21:01,135 INFO L85 PathProgramCache]: Analyzing trace with hash 733045410, now seen corresponding path program 1 times [2024-10-23 21:21:01,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:21:01,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318915299] [2024-10-23 21:21:01,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:01,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:21:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 263 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:21:02,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:21:02,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318915299] [2024-10-23 21:21:02,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318915299] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:21:02,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417006241] [2024-10-23 21:21:02,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:02,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:21:02,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:21:02,115 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:21:02,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 21:21:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:02,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:21:02,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:21:05,969 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 509 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-23 21:21:05,969 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:21:05,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417006241] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:21:05,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:21:05,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:21:05,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033112123] [2024-10-23 21:21:05,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:21:05,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:21:05,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:21:05,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:21:05,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:21:05,971 INFO L87 Difference]: Start difference. First operand 14751 states and 15926 transitions. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:07,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:21:07,144 INFO L93 Difference]: Finished difference Result 37878 states and 40889 transitions. [2024-10-23 21:21:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:21:07,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 662 [2024-10-23 21:21:07,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:21:07,164 INFO L225 Difference]: With dead ends: 37878 [2024-10-23 21:21:07,164 INFO L226 Difference]: Without dead ends: 23128 [2024-10-23 21:21:07,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:21:07,175 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 136 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:21:07,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 250 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:21:07,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23128 states. [2024-10-23 21:21:07,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23128 to 19238. [2024-10-23 21:21:07,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19238 states, 19237 states have (on average 1.0782346519727608) internal successors, (20742), 19237 states have internal predecessors, (20742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:07,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19238 states to 19238 states and 20742 transitions. [2024-10-23 21:21:07,326 INFO L78 Accepts]: Start accepts. Automaton has 19238 states and 20742 transitions. Word has length 662 [2024-10-23 21:21:07,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:21:07,326 INFO L471 AbstractCegarLoop]: Abstraction has 19238 states and 20742 transitions. [2024-10-23 21:21:07,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:07,327 INFO L276 IsEmpty]: Start isEmpty. Operand 19238 states and 20742 transitions. [2024-10-23 21:21:07,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2024-10-23 21:21:07,334 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:21:07,334 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:21:07,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-23 21:21:07,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-23 21:21:07,535 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:21:07,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:21:07,535 INFO L85 PathProgramCache]: Analyzing trace with hash -280371710, now seen corresponding path program 1 times [2024-10-23 21:21:07,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:21:07,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91015232] [2024-10-23 21:21:07,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:07,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:21:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:07,876 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2024-10-23 21:21:07,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:21:07,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91015232] [2024-10-23 21:21:07,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91015232] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:21:07,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:21:07,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:21:07,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268720284] [2024-10-23 21:21:07,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:21:07,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:21:07,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:21:07,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:21:07,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:21:07,878 INFO L87 Difference]: Start difference. First operand 19238 states and 20742 transitions. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:09,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:21:09,388 INFO L93 Difference]: Finished difference Result 49546 states and 53261 transitions. [2024-10-23 21:21:09,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:21:09,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 686 [2024-10-23 21:21:09,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:21:09,414 INFO L225 Difference]: With dead ends: 49546 [2024-10-23 21:21:09,414 INFO L226 Difference]: Without dead ends: 30309 [2024-10-23 21:21:09,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:21:09,429 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 872 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:21:09,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 210 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:21:09,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30309 states. [2024-10-23 21:21:09,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30309 to 20431. [2024-10-23 21:21:09,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20431 states, 20430 states have (on average 1.0729809104258443) internal successors, (21921), 20430 states have internal predecessors, (21921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20431 states to 20431 states and 21921 transitions. [2024-10-23 21:21:09,596 INFO L78 Accepts]: Start accepts. Automaton has 20431 states and 21921 transitions. Word has length 686 [2024-10-23 21:21:09,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:21:09,596 INFO L471 AbstractCegarLoop]: Abstraction has 20431 states and 21921 transitions. [2024-10-23 21:21:09,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:09,596 INFO L276 IsEmpty]: Start isEmpty. Operand 20431 states and 21921 transitions. [2024-10-23 21:21:09,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2024-10-23 21:21:09,606 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:21:09,606 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:21:09,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:21:09,607 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:21:09,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:21:09,607 INFO L85 PathProgramCache]: Analyzing trace with hash -126013699, now seen corresponding path program 1 times [2024-10-23 21:21:09,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:21:09,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177048277] [2024-10-23 21:21:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:09,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:21:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2024-10-23 21:21:09,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:21:09,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177048277] [2024-10-23 21:21:09,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177048277] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:21:09,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:21:09,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:21:09,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992562683] [2024-10-23 21:21:09,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:21:09,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:21:09,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:21:09,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:21:09,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:21:09,888 INFO L87 Difference]: Start difference. First operand 20431 states and 21921 transitions. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:10,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:21:10,960 INFO L93 Difference]: Finished difference Result 40559 states and 43527 transitions. [2024-10-23 21:21:10,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:21:10,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 717 [2024-10-23 21:21:10,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:21:10,978 INFO L225 Difference]: With dead ends: 40559 [2024-10-23 21:21:10,978 INFO L226 Difference]: Without dead ends: 20129 [2024-10-23 21:21:10,990 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 [2024-10-23 21:21:10,991 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 463 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:21:10,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 68 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 21:21:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20129 states. [2024-10-23 21:21:11,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20129 to 20128. [2024-10-23 21:21:11,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20128 states, 20127 states have (on average 1.0733343270234015) internal successors, (21603), 20127 states have internal predecessors, (21603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:11,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20128 states to 20128 states and 21603 transitions. [2024-10-23 21:21:11,127 INFO L78 Accepts]: Start accepts. Automaton has 20128 states and 21603 transitions. Word has length 717 [2024-10-23 21:21:11,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:21:11,127 INFO L471 AbstractCegarLoop]: Abstraction has 20128 states and 21603 transitions. [2024-10-23 21:21:11,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:11,127 INFO L276 IsEmpty]: Start isEmpty. Operand 20128 states and 21603 transitions. [2024-10-23 21:21:11,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2024-10-23 21:21:11,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:21:11,137 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:21:11,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 21:21:11,137 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:21:11,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:21:11,137 INFO L85 PathProgramCache]: Analyzing trace with hash -775445059, now seen corresponding path program 1 times [2024-10-23 21:21:11,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:21:11,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322717572] [2024-10-23 21:21:11,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:11,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:21:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:11,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1274 backedges. 614 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-10-23 21:21:11,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:21:11,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322717572] [2024-10-23 21:21:11,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322717572] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:21:11,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:21:11,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:21:11,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618934139] [2024-10-23 21:21:11,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:21:11,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:21:11,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:21:11,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:21:11,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:21:11,396 INFO L87 Difference]: Start difference. First operand 20128 states and 21603 transitions. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:12,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:21:12,388 INFO L93 Difference]: Finished difference Result 45928 states and 49340 transitions. [2024-10-23 21:21:12,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:21:12,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 751 [2024-10-23 21:21:12,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:21:12,404 INFO L225 Difference]: With dead ends: 45928 [2024-10-23 21:21:12,404 INFO L226 Difference]: Without dead ends: 22213 [2024-10-23 21:21:12,416 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 [2024-10-23 21:21:12,416 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 281 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:21:12,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 507 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:21:12,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22213 states. [2024-10-23 21:21:12,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22213 to 19223. [2024-10-23 21:21:12,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19223 states, 19222 states have (on average 1.046093018416398) internal successors, (20108), 19222 states have internal predecessors, (20108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19223 states to 19223 states and 20108 transitions. [2024-10-23 21:21:12,545 INFO L78 Accepts]: Start accepts. Automaton has 19223 states and 20108 transitions. Word has length 751 [2024-10-23 21:21:12,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:21:12,546 INFO L471 AbstractCegarLoop]: Abstraction has 19223 states and 20108 transitions. [2024-10-23 21:21:12,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:12,546 INFO L276 IsEmpty]: Start isEmpty. Operand 19223 states and 20108 transitions. [2024-10-23 21:21:12,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2024-10-23 21:21:12,553 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:21:12,553 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:21:12,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-23 21:21:12,553 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:21:12,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:21:12,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1086827069, now seen corresponding path program 1 times [2024-10-23 21:21:12,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:21:12,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421963395] [2024-10-23 21:21:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:12,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:21:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 626 proven. 0 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2024-10-23 21:21:12,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:21:12,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421963395] [2024-10-23 21:21:12,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421963395] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:21:12,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:21:12,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:21:12,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897157085] [2024-10-23 21:21:12,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:21:12,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:21:12,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:21:12,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:21:12,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:21:12,868 INFO L87 Difference]: Start difference. First operand 19223 states and 20108 transitions. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:21:13,760 INFO L93 Difference]: Finished difference Result 41734 states and 43592 transitions. [2024-10-23 21:21:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:21:13,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 807 [2024-10-23 21:21:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:21:13,779 INFO L225 Difference]: With dead ends: 41734 [2024-10-23 21:21:13,780 INFO L226 Difference]: Without dead ends: 22213 [2024-10-23 21:21:13,791 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 [2024-10-23 21:21:13,792 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 272 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:21:13,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 169 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:21:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22213 states. [2024-10-23 21:21:13,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22213 to 19520. [2024-10-23 21:21:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19520 states, 19519 states have (on average 1.0452379732568267) internal successors, (20402), 19519 states have internal predecessors, (20402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19520 states to 19520 states and 20402 transitions. [2024-10-23 21:21:13,975 INFO L78 Accepts]: Start accepts. Automaton has 19520 states and 20402 transitions. Word has length 807 [2024-10-23 21:21:13,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:21:13,975 INFO L471 AbstractCegarLoop]: Abstraction has 19520 states and 20402 transitions. [2024-10-23 21:21:13,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:13,975 INFO L276 IsEmpty]: Start isEmpty. Operand 19520 states and 20402 transitions. [2024-10-23 21:21:13,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2024-10-23 21:21:13,983 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:21:13,983 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:21:13,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-23 21:21:13,983 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:21:13,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:21:13,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1085301838, now seen corresponding path program 1 times [2024-10-23 21:21:13,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:21:13,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430445008] [2024-10-23 21:21:13,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:13,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:21:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1072 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2024-10-23 21:21:14,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:21:14,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430445008] [2024-10-23 21:21:14,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430445008] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:21:14,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:21:14,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:21:14,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824631442] [2024-10-23 21:21:14,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:21:14,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:21:14,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:21:14,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:21:14,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:21:14,668 INFO L87 Difference]: Start difference. First operand 19520 states and 20402 transitions. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:15,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:21:15,400 INFO L93 Difference]: Finished difference Result 41734 states and 43561 transitions. [2024-10-23 21:21:15,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:21:15,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 807 [2024-10-23 21:21:15,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:21:15,416 INFO L225 Difference]: With dead ends: 41734 [2024-10-23 21:21:15,417 INFO L226 Difference]: Without dead ends: 21617 [2024-10-23 21:21:15,426 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 [2024-10-23 21:21:15,427 INFO L432 NwaCegarLoop]: 535 mSDtfsCounter, 243 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:21:15,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 571 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:21:15,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21617 states. [2024-10-23 21:21:15,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21617 to 21015. [2024-10-23 21:21:15,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21015 states, 21014 states have (on average 1.0428761777862376) internal successors, (21915), 21014 states have internal predecessors, (21915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21015 states to 21015 states and 21915 transitions. [2024-10-23 21:21:15,566 INFO L78 Accepts]: Start accepts. Automaton has 21015 states and 21915 transitions. Word has length 807 [2024-10-23 21:21:15,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:21:15,566 INFO L471 AbstractCegarLoop]: Abstraction has 21015 states and 21915 transitions. [2024-10-23 21:21:15,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:15,566 INFO L276 IsEmpty]: Start isEmpty. Operand 21015 states and 21915 transitions. [2024-10-23 21:21:15,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2024-10-23 21:21:15,575 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:21:15,575 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:21:15,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-23 21:21:15,575 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:21:15,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:21:15,575 INFO L85 PathProgramCache]: Analyzing trace with hash 759016264, now seen corresponding path program 1 times [2024-10-23 21:21:15,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:21:15,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785525996] [2024-10-23 21:21:15,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:15,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:21:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:16,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 690 proven. 188 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-10-23 21:21:16,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:21:16,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785525996] [2024-10-23 21:21:16,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785525996] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:21:16,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135384422] [2024-10-23 21:21:16,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:16,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:21:16,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:21:16,448 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:21:16,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 21:21:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:16,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:21:16,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:21:16,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 731 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-10-23 21:21:16,948 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:21:16,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135384422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:21:16,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:21:16,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-10-23 21:21:16,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375986161] [2024-10-23 21:21:16,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:21:16,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:21:16,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:21:16,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:21:16,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:21:16,951 INFO L87 Difference]: Start difference. First operand 21015 states and 21915 transitions. Second operand has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:18,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:21:18,313 INFO L93 Difference]: Finished difference Result 52827 states and 55032 transitions. [2024-10-23 21:21:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:21:18,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 826 [2024-10-23 21:21:18,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:21:18,340 INFO L225 Difference]: With dead ends: 52827 [2024-10-23 21:21:18,340 INFO L226 Difference]: Without dead ends: 31514 [2024-10-23 21:21:18,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 824 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:21:18,355 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 369 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1755 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:21:18,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 562 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 21:21:18,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31514 states. [2024-10-23 21:21:18,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31514 to 26403. [2024-10-23 21:21:18,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26403 states, 26402 states have (on average 1.040527232785395) internal successors, (27472), 26402 states have internal predecessors, (27472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:18,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26403 states to 26403 states and 27472 transitions. [2024-10-23 21:21:18,557 INFO L78 Accepts]: Start accepts. Automaton has 26403 states and 27472 transitions. Word has length 826 [2024-10-23 21:21:18,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:21:18,558 INFO L471 AbstractCegarLoop]: Abstraction has 26403 states and 27472 transitions. [2024-10-23 21:21:18,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 26403 states and 27472 transitions. [2024-10-23 21:21:18,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2024-10-23 21:21:18,566 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:21:18,567 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:21:18,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-23 21:21:18,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:21:18,768 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:21:18,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:21:18,769 INFO L85 PathProgramCache]: Analyzing trace with hash 2142336053, now seen corresponding path program 1 times [2024-10-23 21:21:18,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:21:18,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433983672] [2024-10-23 21:21:18,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:18,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:21:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1342 backedges. 796 proven. 0 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2024-10-23 21:21:19,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:21:19,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433983672] [2024-10-23 21:21:19,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433983672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:21:19,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:21:19,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:21:19,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104274379] [2024-10-23 21:21:19,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:21:19,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:21:19,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:21:19,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:21:19,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:21:19,349 INFO L87 Difference]: Start difference. First operand 26403 states and 27472 transitions. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:20,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:21:20,084 INFO L93 Difference]: Finished difference Result 42297 states and 43822 transitions. [2024-10-23 21:21:20,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:21:20,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 834 [2024-10-23 21:21:20,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:21:20,097 INFO L225 Difference]: With dead ends: 42297 [2024-10-23 21:21:20,097 INFO L226 Difference]: Without dead ends: 15895 [2024-10-23 21:21:20,108 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 [2024-10-23 21:21:20,108 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 321 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:21:20,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 89 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 21:21:20,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15895 states. [2024-10-23 21:21:20,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15895 to 13794. [2024-10-23 21:21:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13794 states, 13793 states have (on average 1.0266802001015007) internal successors, (14161), 13793 states have internal predecessors, (14161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13794 states to 13794 states and 14161 transitions. [2024-10-23 21:21:20,195 INFO L78 Accepts]: Start accepts. Automaton has 13794 states and 14161 transitions. Word has length 834 [2024-10-23 21:21:20,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:21:20,196 INFO L471 AbstractCegarLoop]: Abstraction has 13794 states and 14161 transitions. [2024-10-23 21:21:20,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:20,196 INFO L276 IsEmpty]: Start isEmpty. Operand 13794 states and 14161 transitions. [2024-10-23 21:21:20,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2024-10-23 21:21:20,203 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:21:20,204 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:21:20,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-23 21:21:20,204 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:21:20,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:21:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash 895312971, now seen corresponding path program 1 times [2024-10-23 21:21:20,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:21:20,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245172683] [2024-10-23 21:21:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:20,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:21:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 950 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-10-23 21:21:20,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:21:20,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245172683] [2024-10-23 21:21:20,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245172683] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:21:20,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:21:20,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:21:20,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490215669] [2024-10-23 21:21:20,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:21:20,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:21:20,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:21:20,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:21:20,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:21:20,591 INFO L87 Difference]: Start difference. First operand 13794 states and 14161 transitions. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:21,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:21:21,238 INFO L93 Difference]: Finished difference Result 30590 states and 31450 transitions. [2024-10-23 21:21:21,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:21:21,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 847 [2024-10-23 21:21:21,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:21:21,249 INFO L225 Difference]: With dead ends: 30590 [2024-10-23 21:21:21,249 INFO L226 Difference]: Without dead ends: 16797 [2024-10-23 21:21:21,253 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 [2024-10-23 21:21:21,253 INFO L432 NwaCegarLoop]: 417 mSDtfsCounter, 175 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:21:21,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 439 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 21:21:21,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16797 states. [2024-10-23 21:21:21,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16797 to 15299. [2024-10-23 21:21:21,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15299 states, 15298 states have (on average 1.0245130082363707) internal successors, (15673), 15298 states have internal predecessors, (15673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:21,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15299 states to 15299 states and 15673 transitions. [2024-10-23 21:21:21,345 INFO L78 Accepts]: Start accepts. Automaton has 15299 states and 15673 transitions. Word has length 847 [2024-10-23 21:21:21,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:21:21,346 INFO L471 AbstractCegarLoop]: Abstraction has 15299 states and 15673 transitions. [2024-10-23 21:21:21,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:21,346 INFO L276 IsEmpty]: Start isEmpty. Operand 15299 states and 15673 transitions. [2024-10-23 21:21:21,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2024-10-23 21:21:21,355 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:21:21,355 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:21:21,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-23 21:21:21,355 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:21:21,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:21:21,356 INFO L85 PathProgramCache]: Analyzing trace with hash -868310071, now seen corresponding path program 1 times [2024-10-23 21:21:21,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:21:21,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440640922] [2024-10-23 21:21:21,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:21,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:21:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2024-10-23 21:21:21,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:21:21,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440640922] [2024-10-23 21:21:21,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440640922] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:21:21,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:21:21,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:21:21,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610566272] [2024-10-23 21:21:21,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:21:21,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:21:21,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:21:21,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:21:21,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:21:21,951 INFO L87 Difference]: Start difference. First operand 15299 states and 15673 transitions. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:22,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:21:22,970 INFO L93 Difference]: Finished difference Result 34794 states and 35631 transitions. [2024-10-23 21:21:22,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:21:22,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 900 [2024-10-23 21:21:22,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:21:22,982 INFO L225 Difference]: With dead ends: 34794 [2024-10-23 21:21:22,982 INFO L226 Difference]: Without dead ends: 19197 [2024-10-23 21:21:22,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:21:22,988 INFO L432 NwaCegarLoop]: 367 mSDtfsCounter, 488 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:21:22,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 395 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:21:22,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19197 states. [2024-10-23 21:21:23,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19197 to 14401. [2024-10-23 21:21:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14401 states, 14400 states have (on average 1.0245833333333334) internal successors, (14754), 14400 states have internal predecessors, (14754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:23,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14401 states to 14401 states and 14754 transitions. [2024-10-23 21:21:23,086 INFO L78 Accepts]: Start accepts. Automaton has 14401 states and 14754 transitions. Word has length 900 [2024-10-23 21:21:23,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:21:23,087 INFO L471 AbstractCegarLoop]: Abstraction has 14401 states and 14754 transitions. [2024-10-23 21:21:23,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:23,087 INFO L276 IsEmpty]: Start isEmpty. Operand 14401 states and 14754 transitions. [2024-10-23 21:21:23,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2024-10-23 21:21:23,096 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:21:23,096 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:21:23,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-23 21:21:23,096 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:21:23,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:21:23,097 INFO L85 PathProgramCache]: Analyzing trace with hash 325683956, now seen corresponding path program 1 times [2024-10-23 21:21:23,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:21:23,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199713094] [2024-10-23 21:21:23,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:23,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:21:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 1001 proven. 180 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-10-23 21:21:24,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:21:24,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199713094] [2024-10-23 21:21:24,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199713094] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:21:24,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620517789] [2024-10-23 21:21:24,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:24,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:21:24,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:21:24,090 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:21:24,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 21:21:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:24,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-23 21:21:24,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:21:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 1129 proven. 76 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-10-23 21:21:24,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:21:24,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 1054 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2024-10-23 21:21:24,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620517789] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:21:24,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:21:24,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 8 [2024-10-23 21:21:24,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293332008] [2024-10-23 21:21:24,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:21:24,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:21:24,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:21:24,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:21:24,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:21:24,963 INFO L87 Difference]: Start difference. First operand 14401 states and 14754 transitions. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:25,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:21:25,599 INFO L93 Difference]: Finished difference Result 29700 states and 30425 transitions. [2024-10-23 21:21:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:21:25,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 904 [2024-10-23 21:21:25,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:21:25,610 INFO L225 Difference]: With dead ends: 29700 [2024-10-23 21:21:25,610 INFO L226 Difference]: Without dead ends: 15300 [2024-10-23 21:21:25,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1813 GetRequests, 1807 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:21:25,618 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 242 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:21:25,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 43 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 21:21:25,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15300 states. [2024-10-23 21:21:25,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15300 to 14999. [2024-10-23 21:21:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14999 states, 14998 states have (on average 1.023069742632351) internal successors, (15344), 14998 states have internal predecessors, (15344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14999 states to 14999 states and 15344 transitions. [2024-10-23 21:21:25,715 INFO L78 Accepts]: Start accepts. Automaton has 14999 states and 15344 transitions. Word has length 904 [2024-10-23 21:21:25,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:21:25,716 INFO L471 AbstractCegarLoop]: Abstraction has 14999 states and 15344 transitions. [2024-10-23 21:21:25,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:25,716 INFO L276 IsEmpty]: Start isEmpty. Operand 14999 states and 15344 transitions. [2024-10-23 21:21:25,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 914 [2024-10-23 21:21:25,725 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:21:25,725 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:21:25,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-23 21:21:25,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:21:25,926 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:21:25,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:21:25,927 INFO L85 PathProgramCache]: Analyzing trace with hash -618175182, now seen corresponding path program 1 times [2024-10-23 21:21:25,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:21:25,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793548138] [2024-10-23 21:21:25,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:25,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:21:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 859 proven. 188 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2024-10-23 21:21:27,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:21:27,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793548138] [2024-10-23 21:21:27,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793548138] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:21:27,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944523201] [2024-10-23 21:21:27,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:27,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:21:27,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:21:27,044 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:21:27,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 21:21:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:27,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:21:27,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:21:33,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 876 proven. 0 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2024-10-23 21:21:33,151 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:21:33,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944523201] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:21:33,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:21:33,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-10-23 21:21:33,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169075117] [2024-10-23 21:21:33,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:21:33,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:21:33,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:21:33,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:21:33,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:21:33,153 INFO L87 Difference]: Start difference. First operand 14999 states and 15344 transitions. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:38,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:21:38,262 INFO L93 Difference]: Finished difference Result 37194 states and 38026 transitions. [2024-10-23 21:21:38,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:21:38,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 913 [2024-10-23 21:21:38,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:21:38,277 INFO L225 Difference]: With dead ends: 37194 [2024-10-23 21:21:38,278 INFO L226 Difference]: Without dead ends: 21897 [2024-10-23 21:21:38,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 911 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:21:38,285 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 353 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:21:38,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 85 Invalid, 1620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-10-23 21:21:38,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21897 states. [2024-10-23 21:21:38,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21897 to 18595. [2024-10-23 21:21:38,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18595 states, 18594 states have (on average 1.0221576852748198) internal successors, (19006), 18594 states have internal predecessors, (19006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:38,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18595 states to 18595 states and 19006 transitions. [2024-10-23 21:21:38,422 INFO L78 Accepts]: Start accepts. Automaton has 18595 states and 19006 transitions. Word has length 913 [2024-10-23 21:21:38,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:21:38,422 INFO L471 AbstractCegarLoop]: Abstraction has 18595 states and 19006 transitions. [2024-10-23 21:21:38,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:38,423 INFO L276 IsEmpty]: Start isEmpty. Operand 18595 states and 19006 transitions. [2024-10-23 21:21:38,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 917 [2024-10-23 21:21:38,432 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:21:38,432 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:21:38,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-23 21:21:38,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:21:38,633 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:21:38,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:21:38,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1986498522, now seen corresponding path program 1 times [2024-10-23 21:21:38,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:21:38,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910337132] [2024-10-23 21:21:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:38,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:21:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 883 proven. 0 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2024-10-23 21:21:39,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:21:39,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910337132] [2024-10-23 21:21:39,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910337132] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:21:39,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:21:39,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:21:39,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139081429] [2024-10-23 21:21:39,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:21:39,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:21:39,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:21:39,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:21:39,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:21:39,234 INFO L87 Difference]: Start difference. First operand 18595 states and 19006 transitions. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:40,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:21:40,303 INFO L93 Difference]: Finished difference Result 41690 states and 42598 transitions. [2024-10-23 21:21:40,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:21:40,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 916 [2024-10-23 21:21:40,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:21:40,320 INFO L225 Difference]: With dead ends: 41690 [2024-10-23 21:21:40,320 INFO L226 Difference]: Without dead ends: 22797 [2024-10-23 21:21:40,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:21:40,328 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 363 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:21:40,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 54 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 21:21:40,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22797 states. [2024-10-23 21:21:40,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22797 to 16500. [2024-10-23 21:21:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16500 states, 16499 states have (on average 1.022849869689072) internal successors, (16876), 16499 states have internal predecessors, (16876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:40,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16500 states to 16500 states and 16876 transitions. [2024-10-23 21:21:40,510 INFO L78 Accepts]: Start accepts. Automaton has 16500 states and 16876 transitions. Word has length 916 [2024-10-23 21:21:40,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:21:40,510 INFO L471 AbstractCegarLoop]: Abstraction has 16500 states and 16876 transitions. [2024-10-23 21:21:40,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:40,510 INFO L276 IsEmpty]: Start isEmpty. Operand 16500 states and 16876 transitions. [2024-10-23 21:21:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2024-10-23 21:21:40,519 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:21:40,520 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:21:40,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-23 21:21:40,520 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:21:40,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:21:40,520 INFO L85 PathProgramCache]: Analyzing trace with hash 794797087, now seen corresponding path program 1 times [2024-10-23 21:21:40,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:21:40,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761329308] [2024-10-23 21:21:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:40,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:21:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:41,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1815 backedges. 1009 proven. 501 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-10-23 21:21:41,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:21:41,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761329308] [2024-10-23 21:21:41,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761329308] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:21:41,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554634220] [2024-10-23 21:21:41,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:41,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:21:41,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:21:41,794 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:21:41,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-23 21:21:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:42,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:21:42,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:21:42,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1815 backedges. 753 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2024-10-23 21:21:42,557 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:21:42,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554634220] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:21:42,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:21:42,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-23 21:21:42,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567935882] [2024-10-23 21:21:42,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:21:42,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:21:42,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:21:42,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:21:42,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:21:42,558 INFO L87 Difference]: Start difference. First operand 16500 states and 16876 transitions. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:43,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:21:43,772 INFO L93 Difference]: Finished difference Result 36300 states and 37102 transitions. [2024-10-23 21:21:43,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:21:43,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 921 [2024-10-23 21:21:43,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:21:43,787 INFO L225 Difference]: With dead ends: 36300 [2024-10-23 21:21:43,787 INFO L226 Difference]: Without dead ends: 19502 [2024-10-23 21:21:43,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 925 GetRequests, 921 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:21:43,795 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 490 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:21:43,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 79 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:21:43,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19502 states. [2024-10-23 21:21:43,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19502 to 15001. [2024-10-23 21:21:43,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15001 states, 15000 states have (on average 1.0226666666666666) internal successors, (15340), 15000 states have internal predecessors, (15340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:43,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15001 states to 15001 states and 15340 transitions. [2024-10-23 21:21:43,906 INFO L78 Accepts]: Start accepts. Automaton has 15001 states and 15340 transitions. Word has length 921 [2024-10-23 21:21:43,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:21:43,907 INFO L471 AbstractCegarLoop]: Abstraction has 15001 states and 15340 transitions. [2024-10-23 21:21:43,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:43,907 INFO L276 IsEmpty]: Start isEmpty. Operand 15001 states and 15340 transitions. [2024-10-23 21:21:43,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1543 [2024-10-23 21:21:43,923 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:21:43,924 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:21:43,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-23 21:21:44,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-23 21:21:44,124 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:21:44,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:21:44,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2125508369, now seen corresponding path program 1 times [2024-10-23 21:21:44,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:21:44,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740504279] [2024-10-23 21:21:44,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:44,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:21:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3768 backedges. 2363 proven. 0 refuted. 0 times theorem prover too weak. 1405 trivial. 0 not checked. [2024-10-23 21:21:44,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:21:44,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740504279] [2024-10-23 21:21:44,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740504279] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:21:44,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:21:44,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:21:44,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846066921] [2024-10-23 21:21:44,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:21:44,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:21:44,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:21:44,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:21:44,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:21:44,683 INFO L87 Difference]: Start difference. First operand 15001 states and 15340 transitions. Second operand has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:45,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:21:45,259 INFO L93 Difference]: Finished difference Result 28799 states and 29457 transitions. [2024-10-23 21:21:45,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:21:45,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1542 [2024-10-23 21:21:45,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:21:45,261 INFO L225 Difference]: With dead ends: 28799 [2024-10-23 21:21:45,261 INFO L226 Difference]: Without dead ends: 0 [2024-10-23 21:21:45,270 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 [2024-10-23 21:21:45,270 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 33 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:21:45,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 403 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:21:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-23 21:21:45,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-23 21:21:45,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:45,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-23 21:21:45,271 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1542 [2024-10-23 21:21:45,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:21:45,271 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-23 21:21:45,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:21:45,271 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-23 21:21:45,272 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-23 21:21:45,274 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-23 21:21:45,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-23 21:21:45,276 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:21:45,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-23 21:21:50,576 WARN L286 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 613 DAG size of output: 729 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-10-23 21:21:54,328 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-23 21:21:54,340 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-23 21:21:54,343 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-23 21:21:54,345 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-23 21:21:54,348 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-23 21:21:54,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:21:54 BoogieIcfgContainer [2024-10-23 21:21:54,354 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-23 21:21:54,355 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-23 21:21:54,355 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-23 21:21:54,355 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-23 21:21:54,355 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:20:37" (3/4) ... [2024-10-23 21:21:54,358 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-23 21:21:54,381 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-23 21:21:54,382 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-23 21:21:54,384 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-23 21:21:54,385 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-23 21:21:54,534 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-23 21:21:54,535 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-23 21:21:54,535 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-23 21:21:54,535 INFO L158 Benchmark]: Toolchain (without parser) took 80190.99ms. Allocated memory was 130.0MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 55.4MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 222.0MB. Max. memory is 16.1GB. [2024-10-23 21:21:54,535 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 130.0MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 21:21:54,536 INFO L158 Benchmark]: CACSL2BoogieTranslator took 747.46ms. Allocated memory was 130.0MB in the beginning and 178.3MB in the end (delta: 48.2MB). Free memory was 55.3MB in the beginning and 131.7MB in the end (delta: -76.4MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. [2024-10-23 21:21:54,536 INFO L158 Benchmark]: Boogie Procedure Inliner took 141.42ms. Allocated memory is still 178.3MB. Free memory was 131.7MB in the beginning and 94.0MB in the end (delta: 37.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-10-23 21:21:54,537 INFO L158 Benchmark]: Boogie Preprocessor took 255.00ms. Allocated memory was 178.3MB in the beginning and 268.4MB in the end (delta: 90.2MB). Free memory was 94.0MB in the beginning and 186.6MB in the end (delta: -92.7MB). Peak memory consumption was 69.9MB. Max. memory is 16.1GB. [2024-10-23 21:21:54,538 INFO L158 Benchmark]: RCFGBuilder took 1806.69ms. Allocated memory is still 268.4MB. Free memory was 186.6MB in the beginning and 147.9MB in the end (delta: 38.7MB). Peak memory consumption was 115.5MB. Max. memory is 16.1GB. [2024-10-23 21:21:54,538 INFO L158 Benchmark]: TraceAbstraction took 77054.31ms. Allocated memory was 268.4MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 146.9MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-10-23 21:21:54,538 INFO L158 Benchmark]: Witness Printer took 179.85ms. Allocated memory is still 2.1GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-10-23 21:21:54,539 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 130.0MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 747.46ms. Allocated memory was 130.0MB in the beginning and 178.3MB in the end (delta: 48.2MB). Free memory was 55.3MB in the beginning and 131.7MB in the end (delta: -76.4MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 141.42ms. Allocated memory is still 178.3MB. Free memory was 131.7MB in the beginning and 94.0MB in the end (delta: 37.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 255.00ms. Allocated memory was 178.3MB in the beginning and 268.4MB in the end (delta: 90.2MB). Free memory was 94.0MB in the beginning and 186.6MB in the end (delta: -92.7MB). Peak memory consumption was 69.9MB. Max. memory is 16.1GB. * RCFGBuilder took 1806.69ms. Allocated memory is still 268.4MB. Free memory was 186.6MB in the beginning and 147.9MB in the end (delta: 38.7MB). Peak memory consumption was 115.5MB. Max. memory is 16.1GB. * TraceAbstraction took 77054.31ms. Allocated memory was 268.4MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 146.9MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 179.85ms. Allocated memory is still 2.1GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 203]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 362 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67.9s, OverallIterations: 29, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 35.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8325 SdHoareTripleChecker+Valid, 32.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8325 mSDsluCounter, 10528 SdHoareTripleChecker+Invalid, 28.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 920 mSDsCounter, 4529 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29083 IncrementalHoareTripleChecker+Invalid, 33612 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4529 mSolverCounterUnsat, 9608 mSDtfsCounter, 29083 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7012 GetRequests, 6951 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26403occurred in iteration=21, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 29 MinimizatonAttempts, 54288 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 23.7s InterpolantComputationTime, 24047 NumberOfCodeBlocks, 24047 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 24913 ConstructedInterpolants, 345 QuantifiedInterpolants, 97796 SizeOfPredicates, 3 NumberOfNonLiveVariables, 7180 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 38 InterpolantComputations, 29 PerfectInterpolantSequences, 35107/36709 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1776]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((long long) 42 + a4) <= 0) && (0 <= ((long long) a4 + 85))) && (((long long) 98 + a0) <= 0)) && (a2 == 4)) || (((48790 <= a29) && (((long long) 89 + a4) <= 0)) && (5 <= a2))) || (((((((long long) 42 + a4) <= 0) && (((long long) 98 + a0) <= 0)) && (0 <= ((long long) 146 + a0))) && (a2 == 1)) && (0 <= ((long long) 600001 + a29)))) || ((((((((long long) 42 + a4) <= 0) && (0 <= ((long long) a4 + 85))) && (((long long) a0 + 147) <= 0)) && (0 <= ((long long) 600001 + a29))) && (3 == a2)) && (((long long) a29 + 127) <= 0))) || ((((((((long long) 42 + a4) <= 0) && (2 == a2)) && (0 <= ((long long) a4 + 85))) && (((long long) 98 + a0) <= 0)) && (0 <= ((long long) a29 + 13))) && (0 <= ((long long) a0 + 145)))) || ((((((0 <= ((long long) 97 + a0)) && (((long long) 42 + a4) <= 0)) && (0 <= ((long long) a4 + 85))) && (a2 == 1)) && (0 <= ((long long) 142 + a29))) && (a29 <= 43))) || (((2 == a2) && (((long long) 89 + a4) <= 0)) && (((long long) 98 + a0) <= 0))) || (((((((long long) 42 + a4) <= 0) && (0 <= ((long long) a4 + 85))) && (((long long) a0 + 147) <= 0)) && (a2 == 4)) && (0 <= ((long long) a29 + 13)))) || (((((((long long) 148 + a0) <= 0) && (((long long) 42 + a4) <= 0)) && (0 <= ((long long) a4 + 85))) && (44 <= a29)) && (3 == a2))) || (((((((long long) 42 + a4) <= 0) && (0 <= ((long long) a4 + 85))) && (0 <= ((long long) a29 + 16))) && (a2 == 1)) && (a29 <= 43))) || (((((long long) 148 + a0) <= 0) && (((long long) 42 + a4) <= 0)) && (a2 == 1))) || ((((((long long) 89 + a4) <= 0) && (((long long) 98 + a0) <= 0)) && (0 <= ((long long) 146 + a0))) && (5 <= a2))) || (((((long long) 89 + a4) <= 0) && (((long long) 98 + a0) <= 0)) && (a2 == 1))) || ((((44 <= a29) && (((long long) 89 + a4) <= 0)) && (((long long) 98 + a0) <= 0)) && (5 <= a2))) || (((((long long) 89 + a4) <= 0) && (((long long) 98 + a0) <= 0)) && (a2 == 4))) || ((((((long long) 42 + a4) <= 0) && (((long long) a0 + 147) <= 0)) && (3 == a2)) && (a29 <= 43))) || ((((((long long) 89 + a4) <= 0) && (a2 == 4)) && (0 <= ((long long) 600001 + a29))) && (a29 <= 43))) || (((((long long) 89 + a4) <= 0) && (0 <= ((long long) 600001 + a29))) && (3 == a2))) || (((((long long) 89 + a4) <= 0) && (a2 == 1)) && (a29 <= 43))) || (((((((long long) 148 + a0) <= 0) && (((long long) 42 + a4) <= 0)) && (0 <= ((long long) 600001 + a29))) && (3 == a2)) && (a29 <= 43))) || (((((((long long) 42 + a4) <= 0) && (2 == a2)) && (0 <= ((long long) a4 + 85))) && (((long long) a0 + 147) <= 0)) && (0 <= ((long long) a29 + 16)))) || ((((((((long long) 89 + a4) <= 0) && (5 <= a2)) && (0 <= ((long long) a29 + 13))) || (((((long long) 89 + a4) <= 0) && (0 <= ((long long) 146 + a0))) && (5 <= a2))) && (0 <= ((long long) a29 + 16))) && (a29 <= 43))) || ((((((long long) 89 + a4) <= 0) && (((long long) 98 + a0) <= 0)) && (5 <= a2)) && (((long long) a29 + 173705) <= 0))) || ((((((((long long) 42 + a4) <= 0) && (0 <= ((long long) a4 + 85))) && (((long long) 98 + a0) <= 0)) && (5 <= a2)) && (0 <= ((long long) 600001 + a29))) && (0 <= ((long long) a0 + 145)))) || ((((((((((long long) 42 + a4) <= 0) && (0 <= ((long long) a4 + 85))) && (44 <= a29)) && (((long long) 98 + a0) <= 0)) && (3 == a2)) && (0 <= ((long long) a0 + 145))) || (((((((long long) 42 + a4) <= 0) && (0 <= ((long long) a4 + 85))) && (((long long) 98 + a0) <= 0)) && (0 <= ((long long) 141 + a0))) && (3 == a2))) && (0 <= ((long long) 600001 + a29)))) || (((((((long long) 42 + a4) <= 0) && (2 == a2)) && (0 <= ((long long) a4 + 85))) && (44 <= a29)) && (((long long) 98 + a0) <= 0))) || (((((long long) 89 + a4) <= 0) && (((long long) 98 + a0) <= 0)) && (3 == a2))) || ((((((((long long) 42 + a4) <= 0) && (0 <= ((long long) a4 + 85))) && (((long long) 98 + a0) <= 0)) && (5 <= a2)) && (0 <= ((long long) 142 + a29))) && (a29 <= 43))) || (((((((long long) 148 + a0) <= 0) && (((long long) 42 + a4) <= 0)) && (2 == a2)) && (0 <= ((long long) a4 + 85))) && (0 <= ((long long) 600001 + a29)))) || (((((((long long) 148 + a0) <= 0) && (((long long) 42 + a4) <= 0)) && (0 <= ((long long) a4 + 85))) && (a2 == 4)) && (0 <= ((long long) 600001 + a29)))) || ((((((long long) 42 + a4) <= 0) && (((long long) 98 + a0) <= 0)) && (5 <= a2)) && (168789 <= a29))) || ((((((long long) 148 + a0) <= 0) && (((long long) 42 + a4) <= 0)) && (44 <= a29)) && (5 <= a2))) || (((2 == a2) && (((long long) 89 + a4) <= 0)) && (0 <= ((long long) 600001 + a29)))) || ((((((long long) 42 + a4) <= 0) && (0 <= ((long long) a4 + 85))) && (((long long) a0 + 147) <= 0)) && (5 <= a2))) RESULT: Ultimate proved your program to be correct! [2024-10-23 21:21:54,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE