./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/Problem17_label21.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/Problem17_label21.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 094be3bd22098479b0cd50c57f93c246c7d8c744192a211aacece1f30e4af2db --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:30:26,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:30:26,099 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:30:26,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:30:26,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:30:26,130 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:30:26,131 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:30:26,131 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:30:26,132 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:30:26,132 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:30:26,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:30:26,133 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:30:26,134 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:30:26,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:30:26,134 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:30:26,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:30:26,135 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:30:26,135 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:30:26,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:30:26,136 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:30:26,137 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:30:26,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:30:26,141 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:30:26,141 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:30:26,142 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:30:26,142 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:30:26,142 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:30:26,142 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:30:26,143 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:30:26,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:30:26,143 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:30:26,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:30:26,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:30:26,144 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:30:26,145 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:30:26,145 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:30:26,146 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:30:26,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:30:26,146 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:30:26,147 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:30:26,147 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:30:26,147 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:30:26,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 094be3bd22098479b0cd50c57f93c246c7d8c744192a211aacece1f30e4af2db [2024-10-23 21:30:26,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:30:26,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:30:26,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:30:26,441 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:30:26,442 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:30:26,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label21.c [2024-10-23 21:30:27,844 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:30:28,227 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:30:28,228 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label21.c [2024-10-23 21:30:28,257 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab1b485fb/1cd3a444ea194cda94da31388e992ebb/FLAG22b55f3b0 [2024-10-23 21:30:28,274 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab1b485fb/1cd3a444ea194cda94da31388e992ebb [2024-10-23 21:30:28,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:30:28,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:30:28,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:30:28,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:30:28,288 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:30:28,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:30:28" (1/1) ... [2024-10-23 21:30:28,289 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a1cf4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:28, skipping insertion in model container [2024-10-23 21:30:28,290 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:30:28" (1/1) ... [2024-10-23 21:30:28,383 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:30:28,647 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/Problem17_label21.c[8748,8761] [2024-10-23 21:30:29,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:30:29,233 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:30:29,267 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/Problem17_label21.c[8748,8761] [2024-10-23 21:30:29,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:30:29,529 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:30:29,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:29 WrapperNode [2024-10-23 21:30:29,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:30:29,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:30:29,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:30:29,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:30:29,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:29" (1/1) ... [2024-10-23 21:30:29,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:29" (1/1) ... [2024-10-23 21:30:29,934 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-10-23 21:30:29,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:30:29,936 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:30:29,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:30:29,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:30:29,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:29" (1/1) ... [2024-10-23 21:30:29,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:29" (1/1) ... [2024-10-23 21:30:30,003 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:29" (1/1) ... [2024-10-23 21:30:30,157 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 21:30:30,157 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:29" (1/1) ... [2024-10-23 21:30:30,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:29" (1/1) ... [2024-10-23 21:30:30,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:29" (1/1) ... [2024-10-23 21:30:30,311 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:29" (1/1) ... [2024-10-23 21:30:30,337 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:29" (1/1) ... [2024-10-23 21:30:30,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:29" (1/1) ... [2024-10-23 21:30:30,388 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:30:30,390 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:30:30,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:30:30,391 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:30:30,392 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:29" (1/1) ... [2024-10-23 21:30:30,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:30:30,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:30:30,427 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 21:30:30,430 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 21:30:30,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:30:30,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:30:30,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:30:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:30:30,551 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:30:30,553 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:30:33,681 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-10-23 21:30:33,681 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:30:33,733 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:30:33,733 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:30:33,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:30:33 BoogieIcfgContainer [2024-10-23 21:30:33,734 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:30:33,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:30:33,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:30:33,740 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:30:33,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:30:28" (1/3) ... [2024-10-23 21:30:33,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38da1615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:30:33, skipping insertion in model container [2024-10-23 21:30:33,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:29" (2/3) ... [2024-10-23 21:30:33,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38da1615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:30:33, skipping insertion in model container [2024-10-23 21:30:33,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:30:33" (3/3) ... [2024-10-23 21:30:33,743 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label21.c [2024-10-23 21:30:33,759 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:30:33,760 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:30:33,837 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:30:33,843 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;@5254abf9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:30:33,843 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:30:33,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 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 21:30:33,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-23 21:30:33,856 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:33,857 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] [2024-10-23 21:30:33,858 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:33,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:33,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1140855313, now seen corresponding path program 1 times [2024-10-23 21:30:33,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:33,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566280779] [2024-10-23 21:30:33,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:33,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:34,090 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 21:30:34,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:34,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566280779] [2024-10-23 21:30:34,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566280779] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:34,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:34,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:34,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921738478] [2024-10-23 21:30:34,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:34,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:30:34,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:34,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:30:34,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:30:34,128 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 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 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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 21:30:34,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:34,210 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2024-10-23 21:30:34,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:30:34,214 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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 58 [2024-10-23 21:30:34,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:34,227 INFO L225 Difference]: With dead ends: 1055 [2024-10-23 21:30:34,229 INFO L226 Difference]: Without dead ends: 526 [2024-10-23 21:30:34,235 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 21:30:34,240 INFO L432 NwaCegarLoop]: 935 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, 935 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 21:30:34,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:30:34,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-23 21:30:34,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-10-23 21:30:34,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 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 21:30:34,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2024-10-23 21:30:34,322 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 58 [2024-10-23 21:30:34,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:34,322 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2024-10-23 21:30:34,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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 21:30:34,323 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2024-10-23 21:30:34,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-23 21:30:34,325 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:34,326 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] [2024-10-23 21:30:34,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:30:34,327 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:34,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:34,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1362182503, now seen corresponding path program 1 times [2024-10-23 21:30:34,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:34,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665089491] [2024-10-23 21:30:34,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:34,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:34,575 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 21:30:34,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:34,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665089491] [2024-10-23 21:30:34,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665089491] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:34,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:34,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:34,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875293176] [2024-10-23 21:30:34,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:34,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:34,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:34,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:34,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:34,582 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 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 21:30:36,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:36,780 INFO L93 Difference]: Finished difference Result 1501 states and 2698 transitions. [2024-10-23 21:30:36,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:36,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 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 58 [2024-10-23 21:30:36,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:36,786 INFO L225 Difference]: With dead ends: 1501 [2024-10-23 21:30:36,786 INFO L226 Difference]: Without dead ends: 976 [2024-10-23 21:30:36,788 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 21:30:36,789 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 413 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:36,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 448 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:30:36,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2024-10-23 21:30:36,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2024-10-23 21:30:36,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.5541795665634675) internal successors, (1506), 969 states have internal predecessors, (1506), 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 21:30:36,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2024-10-23 21:30:36,832 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 58 [2024-10-23 21:30:36,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:36,833 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2024-10-23 21:30:36,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 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 21:30:36,834 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2024-10-23 21:30:36,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-10-23 21:30:36,838 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:36,839 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:36,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:30:36,840 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:36,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:36,841 INFO L85 PathProgramCache]: Analyzing trace with hash -349612846, now seen corresponding path program 1 times [2024-10-23 21:30:36,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:36,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792448580] [2024-10-23 21:30:36,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:36,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:37,110 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:37,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:37,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792448580] [2024-10-23 21:30:37,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792448580] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:37,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:37,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:37,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32888488] [2024-10-23 21:30:37,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:37,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:37,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:37,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:37,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:37,114 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 21:30:39,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:39,315 INFO L93 Difference]: Finished difference Result 2812 states and 4380 transitions. [2024-10-23 21:30:39,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:39,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-10-23 21:30:39,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:39,323 INFO L225 Difference]: With dead ends: 2812 [2024-10-23 21:30:39,323 INFO L226 Difference]: Without dead ends: 1843 [2024-10-23 21:30:39,325 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 21:30:39,327 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:39,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 577 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:30:39,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2024-10-23 21:30:39,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1840. [2024-10-23 21:30:39,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3501903208265362) internal successors, (2483), 1839 states have internal predecessors, (2483), 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 21:30:39,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2483 transitions. [2024-10-23 21:30:39,367 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2483 transitions. Word has length 125 [2024-10-23 21:30:39,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:39,369 INFO L471 AbstractCegarLoop]: Abstraction has 1840 states and 2483 transitions. [2024-10-23 21:30:39,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 21:30:39,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2483 transitions. [2024-10-23 21:30:39,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-23 21:30:39,372 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:39,372 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:39,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:30:39,375 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:39,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:39,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1185213196, now seen corresponding path program 1 times [2024-10-23 21:30:39,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:39,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669470885] [2024-10-23 21:30:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:39,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:39,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:39,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669470885] [2024-10-23 21:30:39,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669470885] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:39,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:39,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:39,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265247704] [2024-10-23 21:30:39,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:39,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:39,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:39,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:39,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:39,680 INFO L87 Difference]: Start difference. First operand 1840 states and 2483 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 21:30:41,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:41,474 INFO L93 Difference]: Finished difference Result 4551 states and 6281 transitions. [2024-10-23 21:30:41,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:41,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2024-10-23 21:30:41,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:41,483 INFO L225 Difference]: With dead ends: 4551 [2024-10-23 21:30:41,484 INFO L226 Difference]: Without dead ends: 2712 [2024-10-23 21:30:41,486 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 21:30:41,487 INFO L432 NwaCegarLoop]: 816 mSDtfsCounter, 448 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:41,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 883 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-23 21:30:41,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2024-10-23 21:30:41,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2710. [2024-10-23 21:30:41,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2709 states have (on average 1.3004798818752308) internal successors, (3523), 2709 states have internal predecessors, (3523), 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 21:30:41,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3523 transitions. [2024-10-23 21:30:41,531 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3523 transitions. Word has length 128 [2024-10-23 21:30:41,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:41,532 INFO L471 AbstractCegarLoop]: Abstraction has 2710 states and 3523 transitions. [2024-10-23 21:30:41,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 21:30:41,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3523 transitions. [2024-10-23 21:30:41,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-10-23 21:30:41,534 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:41,535 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:41,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:30:41,535 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:41,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1728192164, now seen corresponding path program 1 times [2024-10-23 21:30:41,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:41,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318942323] [2024-10-23 21:30:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:41,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-23 21:30:41,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:41,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318942323] [2024-10-23 21:30:41,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318942323] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:41,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:41,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:41,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144457128] [2024-10-23 21:30:41,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:41,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:41,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:41,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:41,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:41,838 INFO L87 Difference]: Start difference. First operand 2710 states and 3523 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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 21:30:43,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:43,477 INFO L93 Difference]: Finished difference Result 7983 states and 10360 transitions. [2024-10-23 21:30:43,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:43,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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 197 [2024-10-23 21:30:43,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:43,493 INFO L225 Difference]: With dead ends: 7983 [2024-10-23 21:30:43,493 INFO L226 Difference]: Without dead ends: 4420 [2024-10-23 21:30:43,498 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 21:30:43,501 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:43,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:30:43,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2024-10-23 21:30:43,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 3570. [2024-10-23 21:30:43,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3570 states, 3569 states have (on average 1.177640795741104) internal successors, (4203), 3569 states have internal predecessors, (4203), 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 21:30:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3570 states to 3570 states and 4203 transitions. [2024-10-23 21:30:43,557 INFO L78 Accepts]: Start accepts. Automaton has 3570 states and 4203 transitions. Word has length 197 [2024-10-23 21:30:43,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:43,557 INFO L471 AbstractCegarLoop]: Abstraction has 3570 states and 4203 transitions. [2024-10-23 21:30:43,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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 21:30:43,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3570 states and 4203 transitions. [2024-10-23 21:30:43,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-10-23 21:30:43,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:43,560 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, 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] [2024-10-23 21:30:43,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:30:43,561 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:43,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:43,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1309891850, now seen corresponding path program 1 times [2024-10-23 21:30:43,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:43,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775967635] [2024-10-23 21:30:43,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:43,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:43,878 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:43,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:43,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775967635] [2024-10-23 21:30:43,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775967635] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:43,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:43,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:43,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086281404] [2024-10-23 21:30:43,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:43,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:43,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:43,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:43,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:43,883 INFO L87 Difference]: Start difference. First operand 3570 states and 4203 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 21:30:45,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:45,415 INFO L93 Difference]: Finished difference Result 9272 states and 11086 transitions. [2024-10-23 21:30:45,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:45,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 210 [2024-10-23 21:30:45,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:45,438 INFO L225 Difference]: With dead ends: 9272 [2024-10-23 21:30:45,438 INFO L226 Difference]: Without dead ends: 5703 [2024-10-23 21:30:45,444 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 21:30:45,447 INFO L432 NwaCegarLoop]: 724 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:45,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 781 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:30:45,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2024-10-23 21:30:45,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5703. [2024-10-23 21:30:45,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5703 states, 5702 states have (on average 1.1595931252192213) internal successors, (6612), 5702 states have internal predecessors, (6612), 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 21:30:45,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5703 states to 5703 states and 6612 transitions. [2024-10-23 21:30:45,548 INFO L78 Accepts]: Start accepts. Automaton has 5703 states and 6612 transitions. Word has length 210 [2024-10-23 21:30:45,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:45,549 INFO L471 AbstractCegarLoop]: Abstraction has 5703 states and 6612 transitions. [2024-10-23 21:30:45,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 21:30:45,550 INFO L276 IsEmpty]: Start isEmpty. Operand 5703 states and 6612 transitions. [2024-10-23 21:30:45,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-10-23 21:30:45,553 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:45,553 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, 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 21:30:45,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:30:45,553 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:45,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:45,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1038505573, now seen corresponding path program 1 times [2024-10-23 21:30:45,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:45,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002737905] [2024-10-23 21:30:45,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:45,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:45,718 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:30:45,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:45,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002737905] [2024-10-23 21:30:45,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002737905] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:45,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:45,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:45,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698021001] [2024-10-23 21:30:45,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:45,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:45,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:45,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:45,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:45,721 INFO L87 Difference]: Start difference. First operand 5703 states and 6612 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:47,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:47,298 INFO L93 Difference]: Finished difference Result 14375 states and 16775 transitions. [2024-10-23 21:30:47,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:47,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2024-10-23 21:30:47,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:47,319 INFO L225 Difference]: With dead ends: 14375 [2024-10-23 21:30:47,319 INFO L226 Difference]: Without dead ends: 8672 [2024-10-23 21:30:47,325 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 21:30:47,326 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 391 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:47,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 442 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:30:47,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8672 states. [2024-10-23 21:30:47,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8672 to 5676. [2024-10-23 21:30:47,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 5675 states have (on average 1.157885462555066) internal successors, (6571), 5675 states have internal predecessors, (6571), 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 21:30:47,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 6571 transitions. [2024-10-23 21:30:47,415 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 6571 transitions. Word has length 212 [2024-10-23 21:30:47,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:47,415 INFO L471 AbstractCegarLoop]: Abstraction has 5676 states and 6571 transitions. [2024-10-23 21:30:47,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:47,415 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 6571 transitions. [2024-10-23 21:30:47,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-10-23 21:30:47,423 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:47,423 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, 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:47,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:30:47,424 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:47,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:47,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1040865831, now seen corresponding path program 1 times [2024-10-23 21:30:47,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:47,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970868371] [2024-10-23 21:30:47,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:47,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:47,641 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-10-23 21:30:47,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:47,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970868371] [2024-10-23 21:30:47,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970868371] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:47,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:47,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:47,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293888540] [2024-10-23 21:30:47,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:47,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:47,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:47,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:47,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:47,645 INFO L87 Difference]: Start difference. First operand 5676 states and 6571 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 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 21:30:49,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:49,267 INFO L93 Difference]: Finished difference Result 14314 states and 16679 transitions. [2024-10-23 21:30:49,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:49,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 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 290 [2024-10-23 21:30:49,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:49,289 INFO L225 Difference]: With dead ends: 14314 [2024-10-23 21:30:49,289 INFO L226 Difference]: Without dead ends: 7789 [2024-10-23 21:30:49,297 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 21:30:49,298 INFO L432 NwaCegarLoop]: 776 mSDtfsCounter, 383 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:49,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 844 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:30:49,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7789 states. [2024-10-23 21:30:49,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7789 to 7789. [2024-10-23 21:30:49,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7789 states, 7788 states have (on average 1.11864406779661) internal successors, (8712), 7788 states have internal predecessors, (8712), 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 21:30:49,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7789 states to 7789 states and 8712 transitions. [2024-10-23 21:30:49,458 INFO L78 Accepts]: Start accepts. Automaton has 7789 states and 8712 transitions. Word has length 290 [2024-10-23 21:30:49,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:49,458 INFO L471 AbstractCegarLoop]: Abstraction has 7789 states and 8712 transitions. [2024-10-23 21:30:49,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 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 21:30:49,459 INFO L276 IsEmpty]: Start isEmpty. Operand 7789 states and 8712 transitions. [2024-10-23 21:30:49,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-10-23 21:30:49,464 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:49,464 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, 3, 3, 3, 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, 1, 1, 1, 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 21:30:49,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:30:49,465 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:49,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:49,465 INFO L85 PathProgramCache]: Analyzing trace with hash 348724020, now seen corresponding path program 1 times [2024-10-23 21:30:49,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:49,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708782837] [2024-10-23 21:30:49,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:49,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-10-23 21:30:49,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:49,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708782837] [2024-10-23 21:30:49,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708782837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:49,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:49,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:49,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940149865] [2024-10-23 21:30:49,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:49,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:49,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:49,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:49,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:49,660 INFO L87 Difference]: Start difference. First operand 7789 states and 8712 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 21:30:51,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:51,276 INFO L93 Difference]: Finished difference Result 18558 states and 20912 transitions. [2024-10-23 21:30:51,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:51,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 330 [2024-10-23 21:30:51,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:51,294 INFO L225 Difference]: With dead ends: 18558 [2024-10-23 21:30:51,294 INFO L226 Difference]: Without dead ends: 10770 [2024-10-23 21:30:51,302 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 21:30:51,302 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 412 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:51,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 400 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:30:51,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10770 states. [2024-10-23 21:30:51,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10770 to 9915. [2024-10-23 21:30:51,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9915 states, 9914 states have (on average 1.1194270728263063) internal successors, (11098), 9914 states have internal predecessors, (11098), 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 21:30:51,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9915 states to 9915 states and 11098 transitions. [2024-10-23 21:30:51,428 INFO L78 Accepts]: Start accepts. Automaton has 9915 states and 11098 transitions. Word has length 330 [2024-10-23 21:30:51,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:51,429 INFO L471 AbstractCegarLoop]: Abstraction has 9915 states and 11098 transitions. [2024-10-23 21:30:51,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 21:30:51,429 INFO L276 IsEmpty]: Start isEmpty. Operand 9915 states and 11098 transitions. [2024-10-23 21:30:51,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-10-23 21:30:51,437 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:51,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:30:51,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:30:51,438 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:51,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:51,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1648002420, now seen corresponding path program 1 times [2024-10-23 21:30:51,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:51,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649142459] [2024-10-23 21:30:51,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:51,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:51,866 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:51,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:51,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649142459] [2024-10-23 21:30:51,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649142459] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:51,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:51,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:51,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831095465] [2024-10-23 21:30:51,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:51,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:30:51,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:51,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:30:51,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:30:51,870 INFO L87 Difference]: Start difference. First operand 9915 states and 11098 transitions. Second operand has 4 states, 4 states have (on average 99.25) internal successors, (397), 3 states have internal predecessors, (397), 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 21:30:53,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:53,966 INFO L93 Difference]: Finished difference Result 26238 states and 29413 transitions. [2024-10-23 21:30:53,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:30:53,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 3 states have internal predecessors, (397), 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 397 [2024-10-23 21:30:53,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:53,992 INFO L225 Difference]: With dead ends: 26238 [2024-10-23 21:30:53,992 INFO L226 Difference]: Without dead ends: 15899 [2024-10-23 21:30:54,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 21:30:54,005 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 616 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:54,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 194 Invalid, 2698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-23 21:30:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15899 states. [2024-10-23 21:30:54,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15899 to 15897. [2024-10-23 21:30:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15897 states, 15896 states have (on average 1.1247483643683946) internal successors, (17879), 15896 states have internal predecessors, (17879), 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 21:30:54,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15897 states to 15897 states and 17879 transitions. [2024-10-23 21:30:54,345 INFO L78 Accepts]: Start accepts. Automaton has 15897 states and 17879 transitions. Word has length 397 [2024-10-23 21:30:54,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:54,346 INFO L471 AbstractCegarLoop]: Abstraction has 15897 states and 17879 transitions. [2024-10-23 21:30:54,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 3 states have internal predecessors, (397), 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 21:30:54,346 INFO L276 IsEmpty]: Start isEmpty. Operand 15897 states and 17879 transitions. [2024-10-23 21:30:54,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-10-23 21:30:54,363 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:54,364 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:30:54,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:30:54,365 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:54,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:54,366 INFO L85 PathProgramCache]: Analyzing trace with hash 784334085, now seen corresponding path program 1 times [2024-10-23 21:30:54,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:54,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849961111] [2024-10-23 21:30:54,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:54,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:54,735 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-10-23 21:30:54,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:54,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849961111] [2024-10-23 21:30:54,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849961111] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:54,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:54,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:54,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030963102] [2024-10-23 21:30:54,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:54,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:54,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:54,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:54,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:54,738 INFO L87 Difference]: Start difference. First operand 15897 states and 17879 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 21:30:56,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:56,353 INFO L93 Difference]: Finished difference Result 44147 states and 49783 transitions. [2024-10-23 21:30:56,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:56,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 431 [2024-10-23 21:30:56,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:56,418 INFO L225 Difference]: With dead ends: 44147 [2024-10-23 21:30:56,418 INFO L226 Difference]: Without dead ends: 28251 [2024-10-23 21:30:56,437 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 21:30:56,438 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 494 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:56,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 287 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:30:56,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28251 states. [2024-10-23 21:30:56,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28251 to 26957. [2024-10-23 21:30:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26957 states, 26956 states have (on average 1.120529752188752) internal successors, (30205), 26956 states have internal predecessors, (30205), 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 21:30:56,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26957 states to 26957 states and 30205 transitions. [2024-10-23 21:30:56,816 INFO L78 Accepts]: Start accepts. Automaton has 26957 states and 30205 transitions. Word has length 431 [2024-10-23 21:30:56,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:56,817 INFO L471 AbstractCegarLoop]: Abstraction has 26957 states and 30205 transitions. [2024-10-23 21:30:56,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 21:30:56,817 INFO L276 IsEmpty]: Start isEmpty. Operand 26957 states and 30205 transitions. [2024-10-23 21:30:56,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2024-10-23 21:30:56,832 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:56,832 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:30:56,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:30:56,833 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:56,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:56,833 INFO L85 PathProgramCache]: Analyzing trace with hash -368149341, now seen corresponding path program 1 times [2024-10-23 21:30:56,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:56,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902739319] [2024-10-23 21:30:56,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:56,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:30:57,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:57,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902739319] [2024-10-23 21:30:57,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902739319] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:57,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:57,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:30:57,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639999823] [2024-10-23 21:30:57,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:57,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:30:57,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:57,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:30:57,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:30:57,758 INFO L87 Difference]: Start difference. First operand 26957 states and 30205 transitions. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 21:30:59,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:59,874 INFO L93 Difference]: Finished difference Result 67544 states and 75866 transitions. [2024-10-23 21:30:59,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:30:59,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 493 [2024-10-23 21:30:59,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:59,930 INFO L225 Difference]: With dead ends: 67544 [2024-10-23 21:30:59,931 INFO L226 Difference]: Without dead ends: 40588 [2024-10-23 21:30:59,960 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 21:30:59,961 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 865 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 2283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:59,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 330 Invalid, 2283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-23 21:30:59,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40588 states. [2024-10-23 21:31:00,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40588 to 36742. [2024-10-23 21:31:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36742 states, 36741 states have (on average 1.1217985356958167) internal successors, (41216), 36741 states have internal predecessors, (41216), 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 21:31:00,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36742 states to 36742 states and 41216 transitions. [2024-10-23 21:31:00,490 INFO L78 Accepts]: Start accepts. Automaton has 36742 states and 41216 transitions. Word has length 493 [2024-10-23 21:31:00,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:00,492 INFO L471 AbstractCegarLoop]: Abstraction has 36742 states and 41216 transitions. [2024-10-23 21:31:00,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 21:31:00,493 INFO L276 IsEmpty]: Start isEmpty. Operand 36742 states and 41216 transitions. [2024-10-23 21:31:00,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2024-10-23 21:31:00,515 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:00,515 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:00,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:31:00,516 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:00,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:00,516 INFO L85 PathProgramCache]: Analyzing trace with hash 568821207, now seen corresponding path program 1 times [2024-10-23 21:31:00,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:00,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179603262] [2024-10-23 21:31:00,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:00,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-23 21:31:00,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:00,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179603262] [2024-10-23 21:31:00,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179603262] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:00,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:00,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:31:00,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589220425] [2024-10-23 21:31:00,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:00,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:31:00,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:00,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:31:00,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:00,783 INFO L87 Difference]: Start difference. First operand 36742 states and 41216 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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 21:31:02,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:02,443 INFO L93 Difference]: Finished difference Result 70926 states and 79517 transitions. [2024-10-23 21:31:02,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:31:02,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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 501 [2024-10-23 21:31:02,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:02,492 INFO L225 Difference]: With dead ends: 70926 [2024-10-23 21:31:02,493 INFO L226 Difference]: Without dead ends: 34185 [2024-10-23 21:31:02,521 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 21:31:02,522 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 432 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:02,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 344 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:31:02,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34185 states. [2024-10-23 21:31:02,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34185 to 32053. [2024-10-23 21:31:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32053 states, 32052 states have (on average 1.1198677149631848) internal successors, (35894), 32052 states have internal predecessors, (35894), 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 21:31:02,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32053 states to 32053 states and 35894 transitions. [2024-10-23 21:31:02,976 INFO L78 Accepts]: Start accepts. Automaton has 32053 states and 35894 transitions. Word has length 501 [2024-10-23 21:31:02,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:02,977 INFO L471 AbstractCegarLoop]: Abstraction has 32053 states and 35894 transitions. [2024-10-23 21:31:02,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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 21:31:02,978 INFO L276 IsEmpty]: Start isEmpty. Operand 32053 states and 35894 transitions. [2024-10-23 21:31:03,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2024-10-23 21:31:03,010 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:03,011 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:03,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:31:03,011 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:03,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:03,012 INFO L85 PathProgramCache]: Analyzing trace with hash -416539729, now seen corresponding path program 1 times [2024-10-23 21:31:03,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:03,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488551810] [2024-10-23 21:31:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:03,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 454 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-10-23 21:31:03,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:03,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488551810] [2024-10-23 21:31:03,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488551810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:03,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:03,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:31:03,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809257815] [2024-10-23 21:31:03,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:03,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:31:03,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:03,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:31:03,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:31:03,691 INFO L87 Difference]: Start difference. First operand 32053 states and 35894 transitions. Second operand has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 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 21:31:06,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:06,121 INFO L93 Difference]: Finished difference Result 78605 states and 87588 transitions. [2024-10-23 21:31:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:31:06,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 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 21:31:06,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:06,176 INFO L225 Difference]: With dead ends: 78605 [2024-10-23 21:31:06,176 INFO L226 Difference]: Without dead ends: 44853 [2024-10-23 21:31:06,203 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 21:31:06,204 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 556 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2650 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:06,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 306 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2650 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:31:06,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44853 states. [2024-10-23 21:31:06,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44853 to 44399. [2024-10-23 21:31:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44399 states, 44398 states have (on average 1.1127077796297131) internal successors, (49402), 44398 states have internal predecessors, (49402), 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 21:31:06,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44399 states to 44399 states and 49402 transitions. [2024-10-23 21:31:06,598 INFO L78 Accepts]: Start accepts. Automaton has 44399 states and 49402 transitions. Word has length 625 [2024-10-23 21:31:06,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:06,598 INFO L471 AbstractCegarLoop]: Abstraction has 44399 states and 49402 transitions. [2024-10-23 21:31:06,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 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 21:31:06,599 INFO L276 IsEmpty]: Start isEmpty. Operand 44399 states and 49402 transitions. [2024-10-23 21:31:06,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2024-10-23 21:31:06,629 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:06,629 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:06,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 21:31:06,633 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:06,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:06,635 INFO L85 PathProgramCache]: Analyzing trace with hash -35663099, now seen corresponding path program 1 times [2024-10-23 21:31:06,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:06,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813680626] [2024-10-23 21:31:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:06,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-23 21:31:07,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:07,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813680626] [2024-10-23 21:31:07,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813680626] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:07,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:07,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:31:07,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841017410] [2024-10-23 21:31:07,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:07,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:31:07,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:07,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:31:07,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:07,623 INFO L87 Difference]: Start difference. First operand 44399 states and 49402 transitions. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 21:31:08,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:08,894 INFO L93 Difference]: Finished difference Result 88791 states and 98797 transitions. [2024-10-23 21:31:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:31:08,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 21:31:08,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:08,933 INFO L225 Difference]: With dead ends: 88791 [2024-10-23 21:31:08,933 INFO L226 Difference]: Without dead ends: 44393 [2024-10-23 21:31:08,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 21:31:08,958 INFO L432 NwaCegarLoop]: 549 mSDtfsCounter, 571 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:08,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 575 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:31:08,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44393 states. [2024-10-23 21:31:09,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44393 to 44392. [2024-10-23 21:31:09,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44392 states, 44391 states have (on average 1.1118695231015296) internal successors, (49357), 44391 states have internal predecessors, (49357), 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 21:31:09,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44392 states to 44392 states and 49357 transitions. [2024-10-23 21:31:09,302 INFO L78 Accepts]: Start accepts. Automaton has 44392 states and 49357 transitions. Word has length 625 [2024-10-23 21:31:09,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:09,302 INFO L471 AbstractCegarLoop]: Abstraction has 44392 states and 49357 transitions. [2024-10-23 21:31:09,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 21:31:09,303 INFO L276 IsEmpty]: Start isEmpty. Operand 44392 states and 49357 transitions. [2024-10-23 21:31:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2024-10-23 21:31:09,319 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:09,319 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, 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, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:09,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:31:09,319 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:09,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:09,320 INFO L85 PathProgramCache]: Analyzing trace with hash 890793401, now seen corresponding path program 1 times [2024-10-23 21:31:09,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:09,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467250435] [2024-10-23 21:31:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:09,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-10-23 21:31:09,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:09,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467250435] [2024-10-23 21:31:09,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467250435] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:09,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:09,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:31:09,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784937590] [2024-10-23 21:31:09,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:09,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:31:09,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:09,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:31:09,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:09,701 INFO L87 Difference]: Start difference. First operand 44392 states and 49357 transitions. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 21:31:11,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:11,450 INFO L93 Difference]: Finished difference Result 95585 states and 106039 transitions. [2024-10-23 21:31:11,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:31:11,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 641 [2024-10-23 21:31:11,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:11,503 INFO L225 Difference]: With dead ends: 95585 [2024-10-23 21:31:11,503 INFO L226 Difference]: Without dead ends: 48633 [2024-10-23 21:31:11,534 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 21:31:11,535 INFO L432 NwaCegarLoop]: 782 mSDtfsCounter, 446 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:11,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 841 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:31:11,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48633 states. [2024-10-23 21:31:11,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48633 to 46079. [2024-10-23 21:31:11,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46079 states, 46078 states have (on average 1.0976821910673207) internal successors, (50579), 46078 states have internal predecessors, (50579), 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 21:31:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46079 states to 46079 states and 50579 transitions. [2024-10-23 21:31:12,007 INFO L78 Accepts]: Start accepts. Automaton has 46079 states and 50579 transitions. Word has length 641 [2024-10-23 21:31:12,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:12,008 INFO L471 AbstractCegarLoop]: Abstraction has 46079 states and 50579 transitions. [2024-10-23 21:31:12,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 21:31:12,008 INFO L276 IsEmpty]: Start isEmpty. Operand 46079 states and 50579 transitions. [2024-10-23 21:31:12,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2024-10-23 21:31:12,030 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:12,030 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:31:12,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:31:12,031 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:12,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:12,032 INFO L85 PathProgramCache]: Analyzing trace with hash -31757403, now seen corresponding path program 1 times [2024-10-23 21:31:12,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:12,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850961745] [2024-10-23 21:31:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:12,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:12,767 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 435 proven. 78 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-10-23 21:31:12,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:12,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850961745] [2024-10-23 21:31:12,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850961745] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:31:12,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847602119] [2024-10-23 21:31:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:12,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:31:12,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:31:12,770 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 21:31:12,771 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 21:31:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:12,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:31:13,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:31:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 435 proven. 78 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-10-23 21:31:13,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:31:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 513 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-10-23 21:31:13,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847602119] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:31:13,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:31:13,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-23 21:31:13,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140103350] [2024-10-23 21:31:13,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:13,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:31:13,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:13,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:31:13,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:31:13,566 INFO L87 Difference]: Start difference. First operand 46079 states and 50579 transitions. Second operand has 4 states, 4 states have (on average 118.0) internal successors, (472), 3 states have internal predecessors, (472), 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 21:31:16,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:16,119 INFO L93 Difference]: Finished difference Result 119841 states and 131834 transitions. [2024-10-23 21:31:16,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:31:16,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 3 states have internal predecessors, (472), 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 673 [2024-10-23 21:31:16,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:16,190 INFO L225 Difference]: With dead ends: 119841 [2024-10-23 21:31:16,190 INFO L226 Difference]: Without dead ends: 72909 [2024-10-23 21:31:16,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1347 GetRequests, 1343 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:31:16,225 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 834 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:16,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 175 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:31:16,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72909 states. [2024-10-23 21:31:16,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72909 to 64398. [2024-10-23 21:31:16,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64398 states, 64397 states have (on average 1.098343090516639) internal successors, (70730), 64397 states have internal predecessors, (70730), 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 21:31:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64398 states to 64398 states and 70730 transitions. [2024-10-23 21:31:17,039 INFO L78 Accepts]: Start accepts. Automaton has 64398 states and 70730 transitions. Word has length 673 [2024-10-23 21:31:17,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:17,040 INFO L471 AbstractCegarLoop]: Abstraction has 64398 states and 70730 transitions. [2024-10-23 21:31:17,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 3 states have internal predecessors, (472), 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 21:31:17,040 INFO L276 IsEmpty]: Start isEmpty. Operand 64398 states and 70730 transitions. [2024-10-23 21:31:17,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2024-10-23 21:31:17,062 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:17,064 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:17,077 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 21:31:17,265 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,SelfDestructingSolverStorable16 [2024-10-23 21:31:17,265 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:17,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:17,266 INFO L85 PathProgramCache]: Analyzing trace with hash 388987898, now seen corresponding path program 1 times [2024-10-23 21:31:17,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:17,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219733391] [2024-10-23 21:31:17,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:17,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-10-23 21:31:17,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:17,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219733391] [2024-10-23 21:31:17,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219733391] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:17,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:17,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:31:17,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959213188] [2024-10-23 21:31:17,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:17,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:31:17,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:17,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:31:17,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:17,531 INFO L87 Difference]: Start difference. First operand 64398 states and 70730 transitions. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 21:31:19,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:19,158 INFO L93 Difference]: Finished difference Result 139849 states and 153664 transitions. [2024-10-23 21:31:19,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:31:19,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 676 [2024-10-23 21:31:19,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:19,235 INFO L225 Difference]: With dead ends: 139849 [2024-10-23 21:31:19,236 INFO L226 Difference]: Without dead ends: 71621 [2024-10-23 21:31:19,274 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 21:31:19,275 INFO L432 NwaCegarLoop]: 656 mSDtfsCounter, 495 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:19,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 698 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:31:19,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71621 states. [2024-10-23 21:31:20,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71621 to 54145. [2024-10-23 21:31:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54145 states, 54144 states have (on average 1.0846815898345155) internal successors, (58729), 54144 states have internal predecessors, (58729), 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 21:31:20,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54145 states to 54145 states and 58729 transitions. [2024-10-23 21:31:20,464 INFO L78 Accepts]: Start accepts. Automaton has 54145 states and 58729 transitions. Word has length 676 [2024-10-23 21:31:20,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:20,465 INFO L471 AbstractCegarLoop]: Abstraction has 54145 states and 58729 transitions. [2024-10-23 21:31:20,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 21:31:20,465 INFO L276 IsEmpty]: Start isEmpty. Operand 54145 states and 58729 transitions. [2024-10-23 21:31:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2024-10-23 21:31:20,518 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:20,519 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:20,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-23 21:31:20,519 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:20,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:20,520 INFO L85 PathProgramCache]: Analyzing trace with hash -198987594, now seen corresponding path program 1 times [2024-10-23 21:31:20,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:20,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034207847] [2024-10-23 21:31:20,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:20,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 233 proven. 347 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-23 21:31:22,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:22,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034207847] [2024-10-23 21:31:22,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034207847] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:31:22,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538368795] [2024-10-23 21:31:22,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:22,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:31:22,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:31:22,095 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 21:31:22,097 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 21:31:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:22,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 21:31:22,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:31:24,481 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 457 proven. 286 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:31:24,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:31:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 457 proven. 286 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:31:26,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538368795] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 21:31:26,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 21:31:26,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 10 [2024-10-23 21:31:26,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666498399] [2024-10-23 21:31:26,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 21:31:26,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-23 21:31:26,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:26,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-23 21:31:26,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-23 21:31:26,651 INFO L87 Difference]: Start difference. First operand 54145 states and 58729 transitions. Second operand has 10 states, 10 states have (on average 143.9) internal successors, (1439), 10 states have internal predecessors, (1439), 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 21:31:30,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:30,670 INFO L93 Difference]: Finished difference Result 112706 states and 122075 transitions. [2024-10-23 21:31:30,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-23 21:31:30,670 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 143.9) internal successors, (1439), 10 states have internal predecessors, (1439), 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 814 [2024-10-23 21:31:30,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:30,730 INFO L225 Difference]: With dead ends: 112706 [2024-10-23 21:31:30,730 INFO L226 Difference]: Without dead ends: 58135 [2024-10-23 21:31:30,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1642 GetRequests, 1625 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2024-10-23 21:31:30,759 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 1982 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 5587 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 6150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 5587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:30,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1982 Valid, 199 Invalid, 6150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 5587 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-10-23 21:31:30,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58135 states. [2024-10-23 21:31:31,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58135 to 54548. [2024-10-23 21:31:31,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54548 states, 54547 states have (on average 1.0575467028434193) internal successors, (57686), 54547 states have internal predecessors, (57686), 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 21:31:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54548 states to 54548 states and 57686 transitions. [2024-10-23 21:31:31,226 INFO L78 Accepts]: Start accepts. Automaton has 54548 states and 57686 transitions. Word has length 814 [2024-10-23 21:31:31,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:31,227 INFO L471 AbstractCegarLoop]: Abstraction has 54548 states and 57686 transitions. [2024-10-23 21:31:31,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 143.9) internal successors, (1439), 10 states have internal predecessors, (1439), 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 21:31:31,227 INFO L276 IsEmpty]: Start isEmpty. Operand 54548 states and 57686 transitions. [2024-10-23 21:31:31,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2024-10-23 21:31:31,479 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:31,479 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:31:31,501 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 21:31:31,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:31:31,680 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:31,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:31,681 INFO L85 PathProgramCache]: Analyzing trace with hash -380492530, now seen corresponding path program 1 times [2024-10-23 21:31:31,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:31,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531419235] [2024-10-23 21:31:31,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:31,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 730 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-23 21:31:32,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:32,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531419235] [2024-10-23 21:31:32,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531419235] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:32,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:32,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:31:32,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851224025] [2024-10-23 21:31:32,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:32,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:31:32,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:32,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:31:32,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:31:32,791 INFO L87 Difference]: Start difference. First operand 54548 states and 57686 transitions. Second operand has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 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 21:31:35,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:35,308 INFO L93 Difference]: Finished difference Result 129975 states and 137334 transitions. [2024-10-23 21:31:35,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:31:35,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 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 883 [2024-10-23 21:31:35,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:35,393 INFO L225 Difference]: With dead ends: 129975 [2024-10-23 21:31:35,393 INFO L226 Difference]: Without dead ends: 73726 [2024-10-23 21:31:35,420 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 21:31:35,421 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 598 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:35,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 161 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:31:35,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73726 states. [2024-10-23 21:31:36,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73726 to 64333. [2024-10-23 21:31:36,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64333 states, 64332 states have (on average 1.058104831188211) internal successors, (68070), 64332 states have internal predecessors, (68070), 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 21:31:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64333 states to 64333 states and 68070 transitions. [2024-10-23 21:31:36,100 INFO L78 Accepts]: Start accepts. Automaton has 64333 states and 68070 transitions. Word has length 883 [2024-10-23 21:31:36,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:36,100 INFO L471 AbstractCegarLoop]: Abstraction has 64333 states and 68070 transitions. [2024-10-23 21:31:36,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 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 21:31:36,101 INFO L276 IsEmpty]: Start isEmpty. Operand 64333 states and 68070 transitions. [2024-10-23 21:31:36,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 931 [2024-10-23 21:31:36,369 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:36,369 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:31:36,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-23 21:31:36,370 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:36,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:36,371 INFO L85 PathProgramCache]: Analyzing trace with hash -758415339, now seen corresponding path program 1 times [2024-10-23 21:31:36,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:36,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995982452] [2024-10-23 21:31:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:36,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-23 21:31:37,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:37,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995982452] [2024-10-23 21:31:37,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995982452] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:37,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:37,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:31:37,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663727337] [2024-10-23 21:31:37,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:37,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:31:37,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:37,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:31:37,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:37,082 INFO L87 Difference]: Start difference. First operand 64333 states and 68070 transitions. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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 21:31:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:38,673 INFO L93 Difference]: Finished difference Result 134612 states and 142477 transitions. [2024-10-23 21:31:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:31:38,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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 930 [2024-10-23 21:31:38,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:38,745 INFO L225 Difference]: With dead ends: 134612 [2024-10-23 21:31:38,746 INFO L226 Difference]: Without dead ends: 69424 [2024-10-23 21:31:38,789 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 21:31:38,789 INFO L432 NwaCegarLoop]: 586 mSDtfsCounter, 498 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:38,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 618 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:31:38,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69424 states. [2024-10-23 21:31:39,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69424 to 60072. [2024-10-23 21:31:39,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60072 states, 60071 states have (on average 1.054319055783989) internal successors, (63334), 60071 states have internal predecessors, (63334), 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 21:31:39,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60072 states to 60072 states and 63334 transitions. [2024-10-23 21:31:39,679 INFO L78 Accepts]: Start accepts. Automaton has 60072 states and 63334 transitions. Word has length 930 [2024-10-23 21:31:39,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:39,680 INFO L471 AbstractCegarLoop]: Abstraction has 60072 states and 63334 transitions. [2024-10-23 21:31:39,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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 21:31:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 60072 states and 63334 transitions. [2024-10-23 21:31:39,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2024-10-23 21:31:39,708 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:39,709 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:39,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-23 21:31:39,709 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:39,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:39,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1759022573, now seen corresponding path program 1 times [2024-10-23 21:31:39,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:39,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933432692] [2024-10-23 21:31:39,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:39,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:40,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1455 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 1171 trivial. 0 not checked. [2024-10-23 21:31:40,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:40,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933432692] [2024-10-23 21:31:40,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933432692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:40,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:40,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:31:40,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914731098] [2024-10-23 21:31:40,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:40,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:31:40,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:40,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:31:40,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:31:40,432 INFO L87 Difference]: Start difference. First operand 60072 states and 63334 transitions. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 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)