./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/Problem16_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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/Problem16_label20.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 10843b53b0c8d626e0b45edf6995c892da25187fbdbb4d013770994aea6c76bb --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 23:50:41,060 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 23:50:41,131 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 23:50:41,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 23:50:41,142 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 23:50:41,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 23:50:41,173 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 23:50:41,174 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 23:50:41,174 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 23:50:41,175 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 23:50:41,175 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 23:50:41,175 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 23:50:41,176 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 23:50:41,176 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 23:50:41,177 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 23:50:41,177 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 23:50:41,178 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 23:50:41,178 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 23:50:41,178 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 23:50:41,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 23:50:41,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 23:50:41,181 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 23:50:41,181 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 23:50:41,182 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 23:50:41,182 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 23:50:41,182 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 23:50:41,182 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 23:50:41,182 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 23:50:41,183 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 23:50:41,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 23:50:41,184 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 23:50:41,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 23:50:41,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:50:41,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 23:50:41,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 23:50:41,186 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 23:50:41,186 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 23:50:41,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 23:50:41,186 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 23:50:41,186 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 23:50:41,187 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 23:50:41,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 23:50:41,187 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10843b53b0c8d626e0b45edf6995c892da25187fbdbb4d013770994aea6c76bb [2024-10-13 23:50:41,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 23:50:41,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 23:50:41,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 23:50:41,455 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 23:50:41,456 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 23:50:41,457 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label20.c [2024-10-13 23:50:42,911 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 23:50:43,234 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 23:50:43,236 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label20.c [2024-10-13 23:50:43,255 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c61f591/443190b6d575419092da33796bb02cd1/FLAG5e6d4b9cf [2024-10-13 23:50:43,271 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c61f591/443190b6d575419092da33796bb02cd1 [2024-10-13 23:50:43,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 23:50:43,274 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 23:50:43,276 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 23:50:43,276 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 23:50:43,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 23:50:43,282 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:50:43" (1/1) ... [2024-10-13 23:50:43,283 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a95c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:43, skipping insertion in model container [2024-10-13 23:50:43,283 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:50:43" (1/1) ... [2024-10-13 23:50:43,362 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 23:50:43,558 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/Problem16_label20.c[2717,2730] [2024-10-13 23:50:43,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:50:43,909 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 23:50:43,931 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/Problem16_label20.c[2717,2730] [2024-10-13 23:50:44,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:50:44,188 INFO L204 MainTranslator]: Completed translation [2024-10-13 23:50:44,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:44 WrapperNode [2024-10-13 23:50:44,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 23:50:44,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 23:50:44,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 23:50:44,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 23:50:44,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:44" (1/1) ... [2024-10-13 23:50:44,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:44" (1/1) ... [2024-10-13 23:50:44,347 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2024-10-13 23:50:44,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 23:50:44,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 23:50:44,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 23:50:44,350 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 23:50:44,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:44" (1/1) ... [2024-10-13 23:50:44,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:44" (1/1) ... [2024-10-13 23:50:44,373 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:44" (1/1) ... [2024-10-13 23:50:44,445 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]. [2024-10-13 23:50:44,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:44" (1/1) ... [2024-10-13 23:50:44,445 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:44" (1/1) ... [2024-10-13 23:50:44,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:44" (1/1) ... [2024-10-13 23:50:44,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:44" (1/1) ... [2024-10-13 23:50:44,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:44" (1/1) ... [2024-10-13 23:50:44,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:44" (1/1) ... [2024-10-13 23:50:44,652 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 23:50:44,653 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 23:50:44,653 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 23:50:44,654 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 23:50:44,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:44" (1/1) ... [2024-10-13 23:50:44,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:50:44,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:50:44,684 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) [2024-10-13 23:50:44,692 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 [2024-10-13 23:50:44,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 23:50:44,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 23:50:44,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 23:50:44,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 23:50:44,796 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 23:50:44,798 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 23:50:46,812 INFO L? ?]: Removed 276 outVars from TransFormulas that were not future-live. [2024-10-13 23:50:46,812 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 23:50:46,871 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 23:50:46,875 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 23:50:46,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:50:46 BoogieIcfgContainer [2024-10-13 23:50:46,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 23:50:46,879 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 23:50:46,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 23:50:46,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 23:50:46,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:50:43" (1/3) ... [2024-10-13 23:50:46,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc6e4c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:50:46, skipping insertion in model container [2024-10-13 23:50:46,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:44" (2/3) ... [2024-10-13 23:50:46,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc6e4c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:50:46, skipping insertion in model container [2024-10-13 23:50:46,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:50:46" (3/3) ... [2024-10-13 23:50:46,886 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label20.c [2024-10-13 23:50:46,904 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 23:50:46,904 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 23:50:46,988 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 23:50:46,995 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;@5fc2e823, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 23:50:46,996 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 23:50:47,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 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) [2024-10-13 23:50:47,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-13 23:50:47,010 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:47,010 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] [2024-10-13 23:50:47,011 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:47,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:47,017 INFO L85 PathProgramCache]: Analyzing trace with hash -362091617, now seen corresponding path program 1 times [2024-10-13 23:50:47,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:47,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908590345] [2024-10-13 23:50:47,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:47,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:50:47,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:47,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908590345] [2024-10-13 23:50:47,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908590345] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:47,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:47,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:50:47,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318448459] [2024-10-13 23:50:47,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:47,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 23:50:47,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:47,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 23:50:47,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:50:47,207 INFO L87 Difference]: Start difference. First operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-10-13 23:50:47,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:47,272 INFO L93 Difference]: Finished difference Result 667 states and 1321 transitions. [2024-10-13 23:50:47,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 23:50:47,275 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2024-10-13 23:50:47,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:47,285 INFO L225 Difference]: With dead ends: 667 [2024-10-13 23:50:47,285 INFO L226 Difference]: Without dead ends: 332 [2024-10-13 23:50:47,289 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 [2024-10-13 23:50:47,292 INFO L432 NwaCegarLoop]: 596 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, 596 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 [2024-10-13 23:50:47,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 23:50:47,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-10-13 23:50:47,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2024-10-13 23:50:47,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.8006042296072509) internal successors, (596), 331 states have internal predecessors, (596), 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) [2024-10-13 23:50:47,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 596 transitions. [2024-10-13 23:50:47,358 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 596 transitions. Word has length 23 [2024-10-13 23:50:47,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:47,359 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 596 transitions. [2024-10-13 23:50:47,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-10-13 23:50:47,359 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 596 transitions. [2024-10-13 23:50:47,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-13 23:50:47,360 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:47,360 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] [2024-10-13 23:50:47,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 23:50:47,361 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:47,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:47,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1130384087, now seen corresponding path program 1 times [2024-10-13 23:50:47,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:47,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552151022] [2024-10-13 23:50:47,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:47,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:50:47,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:47,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552151022] [2024-10-13 23:50:47,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552151022] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:47,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:47,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:50:47,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482926746] [2024-10-13 23:50:47,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:47,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:50:47,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:47,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:50:47,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:50:47,524 INFO L87 Difference]: Start difference. First operand 332 states and 596 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-10-13 23:50:48,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:48,960 INFO L93 Difference]: Finished difference Result 992 states and 1785 transitions. [2024-10-13 23:50:48,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:50:48,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2024-10-13 23:50:48,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:48,966 INFO L225 Difference]: With dead ends: 992 [2024-10-13 23:50:48,968 INFO L226 Difference]: Without dead ends: 661 [2024-10-13 23:50:48,970 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 [2024-10-13 23:50:48,971 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 332 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:48,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 156 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-13 23:50:48,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2024-10-13 23:50:48,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2024-10-13 23:50:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 1.5833333333333333) internal successors, (1045), 660 states have internal predecessors, (1045), 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) [2024-10-13 23:50:49,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1045 transitions. [2024-10-13 23:50:49,002 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1045 transitions. Word has length 23 [2024-10-13 23:50:49,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:49,002 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 1045 transitions. [2024-10-13 23:50:49,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-10-13 23:50:49,002 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1045 transitions. [2024-10-13 23:50:49,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-13 23:50:49,004 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:49,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:50:49,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 23:50:49,005 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:49,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:49,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1925358340, now seen corresponding path program 1 times [2024-10-13 23:50:49,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:49,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554840546] [2024-10-13 23:50:49,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:49,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:50:49,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:49,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554840546] [2024-10-13 23:50:49,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554840546] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:49,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:49,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:50:49,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731009369] [2024-10-13 23:50:49,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:49,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:50:49,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:49,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:50:49,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:50:49,235 INFO L87 Difference]: Start difference. First operand 661 states and 1045 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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) [2024-10-13 23:50:50,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:50,391 INFO L93 Difference]: Finished difference Result 1650 states and 2538 transitions. [2024-10-13 23:50:50,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:50:50,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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 94 [2024-10-13 23:50:50,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:50,396 INFO L225 Difference]: With dead ends: 1650 [2024-10-13 23:50:50,397 INFO L226 Difference]: Without dead ends: 990 [2024-10-13 23:50:50,398 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 [2024-10-13 23:50:50,400 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 338 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:50,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 75 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-13 23:50:50,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-10-13 23:50:50,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 990. [2024-10-13 23:50:50,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 989 states have (on average 1.3771486349848332) internal successors, (1362), 989 states have internal predecessors, (1362), 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) [2024-10-13 23:50:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1362 transitions. [2024-10-13 23:50:50,452 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1362 transitions. Word has length 94 [2024-10-13 23:50:50,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:50,453 INFO L471 AbstractCegarLoop]: Abstraction has 990 states and 1362 transitions. [2024-10-13 23:50:50,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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) [2024-10-13 23:50:50,454 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1362 transitions. [2024-10-13 23:50:50,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-13 23:50:50,458 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:50,458 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:50:50,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 23:50:50,459 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:50,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:50,460 INFO L85 PathProgramCache]: Analyzing trace with hash 426042791, now seen corresponding path program 1 times [2024-10-13 23:50:50,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:50,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729911594] [2024-10-13 23:50:50,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:50,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:50,615 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:50:50,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:50,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729911594] [2024-10-13 23:50:50,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729911594] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:50,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:50,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:50:50,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688564076] [2024-10-13 23:50:50,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:50,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:50:50,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:50,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:50:50,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:50:50,618 INFO L87 Difference]: Start difference. First operand 990 states and 1362 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2024-10-13 23:50:51,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:51,982 INFO L93 Difference]: Finished difference Result 2966 states and 4083 transitions. [2024-10-13 23:50:51,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:50:51,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 95 [2024-10-13 23:50:51,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:51,989 INFO L225 Difference]: With dead ends: 2966 [2024-10-13 23:50:51,990 INFO L226 Difference]: Without dead ends: 1977 [2024-10-13 23:50:51,992 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 [2024-10-13 23:50:51,993 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 289 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:51,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 207 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-13 23:50:51,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2024-10-13 23:50:52,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1977. [2024-10-13 23:50:52,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1976 states have (on average 1.2469635627530364) internal successors, (2464), 1976 states have internal predecessors, (2464), 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) [2024-10-13 23:50:52,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2464 transitions. [2024-10-13 23:50:52,029 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2464 transitions. Word has length 95 [2024-10-13 23:50:52,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:52,029 INFO L471 AbstractCegarLoop]: Abstraction has 1977 states and 2464 transitions. [2024-10-13 23:50:52,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2024-10-13 23:50:52,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2464 transitions. [2024-10-13 23:50:52,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-13 23:50:52,031 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:52,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:50:52,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 23:50:52,032 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:52,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:52,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1613838116, now seen corresponding path program 1 times [2024-10-13 23:50:52,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:52,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461885721] [2024-10-13 23:50:52,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:52,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:50:52,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:52,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461885721] [2024-10-13 23:50:52,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461885721] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:52,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:52,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:50:52,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287138392] [2024-10-13 23:50:52,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:52,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:50:52,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:52,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:50:52,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:50:52,156 INFO L87 Difference]: Start difference. First operand 1977 states and 2464 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-10-13 23:50:53,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:53,328 INFO L93 Difference]: Finished difference Result 4611 states and 5851 transitions. [2024-10-13 23:50:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:50:53,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2024-10-13 23:50:53,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:53,338 INFO L225 Difference]: With dead ends: 4611 [2024-10-13 23:50:53,338 INFO L226 Difference]: Without dead ends: 2635 [2024-10-13 23:50:53,341 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 [2024-10-13 23:50:53,342 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 360 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:53,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 536 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-13 23:50:53,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2024-10-13 23:50:53,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2635. [2024-10-13 23:50:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 2634 states have (on average 1.2171602126044039) internal successors, (3206), 2634 states have internal predecessors, (3206), 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) [2024-10-13 23:50:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 3206 transitions. [2024-10-13 23:50:53,384 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 3206 transitions. Word has length 110 [2024-10-13 23:50:53,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:53,385 INFO L471 AbstractCegarLoop]: Abstraction has 2635 states and 3206 transitions. [2024-10-13 23:50:53,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-10-13 23:50:53,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 3206 transitions. [2024-10-13 23:50:53,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-10-13 23:50:53,395 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:53,396 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:50:53,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 23:50:53,396 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:53,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:53,397 INFO L85 PathProgramCache]: Analyzing trace with hash -539164122, now seen corresponding path program 1 times [2024-10-13 23:50:53,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:53,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044115460] [2024-10-13 23:50:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:53,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:53,695 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-13 23:50:53,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:53,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044115460] [2024-10-13 23:50:53,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044115460] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:53,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:53,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:50:53,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728211990] [2024-10-13 23:50:53,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:53,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:50:53,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:50:53,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:50:53,700 INFO L87 Difference]: Start difference. First operand 2635 states and 3206 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 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) [2024-10-13 23:50:54,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:54,787 INFO L93 Difference]: Finished difference Result 6585 states and 8077 transitions. [2024-10-13 23:50:54,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:50:54,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 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 295 [2024-10-13 23:50:54,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:54,799 INFO L225 Difference]: With dead ends: 6585 [2024-10-13 23:50:54,799 INFO L226 Difference]: Without dead ends: 3293 [2024-10-13 23:50:54,803 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 [2024-10-13 23:50:54,804 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 358 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:54,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 154 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-13 23:50:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2024-10-13 23:50:54,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 3293. [2024-10-13 23:50:54,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3293 states, 3292 states have (on average 1.0653098420413123) internal successors, (3507), 3292 states have internal predecessors, (3507), 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) [2024-10-13 23:50:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3293 states to 3293 states and 3507 transitions. [2024-10-13 23:50:54,855 INFO L78 Accepts]: Start accepts. Automaton has 3293 states and 3507 transitions. Word has length 295 [2024-10-13 23:50:54,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:54,855 INFO L471 AbstractCegarLoop]: Abstraction has 3293 states and 3507 transitions. [2024-10-13 23:50:54,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 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) [2024-10-13 23:50:54,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3293 states and 3507 transitions. [2024-10-13 23:50:54,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-10-13 23:50:54,861 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:54,862 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-13 23:50:54,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 23:50:54,862 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:54,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:54,863 INFO L85 PathProgramCache]: Analyzing trace with hash 773682473, now seen corresponding path program 1 times [2024-10-13 23:50:54,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:54,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110133705] [2024-10-13 23:50:54,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:54,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:55,335 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2024-10-13 23:50:55,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:55,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110133705] [2024-10-13 23:50:55,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110133705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:55,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:55,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:50:55,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788617705] [2024-10-13 23:50:55,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:55,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:50:55,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:55,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:50:55,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:50:55,338 INFO L87 Difference]: Start difference. First operand 3293 states and 3507 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 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) [2024-10-13 23:50:56,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:56,393 INFO L93 Difference]: Finished difference Result 9548 states and 10184 transitions. [2024-10-13 23:50:56,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:50:56,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 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 461 [2024-10-13 23:50:56,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:56,413 INFO L225 Difference]: With dead ends: 9548 [2024-10-13 23:50:56,414 INFO L226 Difference]: Without dead ends: 6256 [2024-10-13 23:50:56,418 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 [2024-10-13 23:50:56,419 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 240 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:56,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 69 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-13 23:50:56,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6256 states. [2024-10-13 23:50:56,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6256 to 6254. [2024-10-13 23:50:56,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6254 states, 6253 states have (on average 1.060610906764753) internal successors, (6632), 6253 states have internal predecessors, (6632), 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) [2024-10-13 23:50:56,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6254 states to 6254 states and 6632 transitions. [2024-10-13 23:50:56,516 INFO L78 Accepts]: Start accepts. Automaton has 6254 states and 6632 transitions. Word has length 461 [2024-10-13 23:50:56,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:56,516 INFO L471 AbstractCegarLoop]: Abstraction has 6254 states and 6632 transitions. [2024-10-13 23:50:56,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 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) [2024-10-13 23:50:56,517 INFO L276 IsEmpty]: Start isEmpty. Operand 6254 states and 6632 transitions. [2024-10-13 23:50:56,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2024-10-13 23:50:56,525 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:56,525 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:50:56,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 23:50:56,525 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:56,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:56,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1325345855, now seen corresponding path program 1 times [2024-10-13 23:50:56,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:56,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617907281] [2024-10-13 23:50:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:56,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:57,377 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-10-13 23:50:57,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:57,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617907281] [2024-10-13 23:50:57,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617907281] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:57,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:57,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:50:57,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156394932] [2024-10-13 23:50:57,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:57,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:50:57,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:57,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:50:57,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:50:57,381 INFO L87 Difference]: Start difference. First operand 6254 states and 6632 transitions. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 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) [2024-10-13 23:50:58,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:58,469 INFO L93 Difference]: Finished difference Result 12178 states and 12931 transitions. [2024-10-13 23:50:58,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:50:58,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 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 485 [2024-10-13 23:50:58,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:58,487 INFO L225 Difference]: With dead ends: 12178 [2024-10-13 23:50:58,488 INFO L226 Difference]: Without dead ends: 6254 [2024-10-13 23:50:58,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:50:58,496 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 127 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:58,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 122 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-13 23:50:58,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6254 states. [2024-10-13 23:50:58,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6254 to 6254. [2024-10-13 23:50:58,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6254 states, 6253 states have (on average 1.0604509835279066) internal successors, (6631), 6253 states have internal predecessors, (6631), 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) [2024-10-13 23:50:58,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6254 states to 6254 states and 6631 transitions. [2024-10-13 23:50:58,591 INFO L78 Accepts]: Start accepts. Automaton has 6254 states and 6631 transitions. Word has length 485 [2024-10-13 23:50:58,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:58,592 INFO L471 AbstractCegarLoop]: Abstraction has 6254 states and 6631 transitions. [2024-10-13 23:50:58,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 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) [2024-10-13 23:50:58,592 INFO L276 IsEmpty]: Start isEmpty. Operand 6254 states and 6631 transitions. [2024-10-13 23:50:58,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-10-13 23:50:58,604 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:58,604 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-13 23:50:58,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 23:50:58,604 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:58,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:58,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1308584728, now seen corresponding path program 1 times [2024-10-13 23:50:58,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:58,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931543157] [2024-10-13 23:50:58,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:58,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 599 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-10-13 23:50:59,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:59,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931543157] [2024-10-13 23:50:59,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931543157] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:59,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:59,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:50:59,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393385645] [2024-10-13 23:50:59,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:59,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:50:59,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:59,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:50:59,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:50:59,559 INFO L87 Difference]: Start difference. First operand 6254 states and 6631 transitions. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 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) [2024-10-13 23:51:00,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:00,862 INFO L93 Difference]: Finished difference Result 16786 states and 17898 transitions. [2024-10-13 23:51:00,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:51:00,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 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 600 [2024-10-13 23:51:00,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:00,891 INFO L225 Difference]: With dead ends: 16786 [2024-10-13 23:51:00,891 INFO L226 Difference]: Without dead ends: 10862 [2024-10-13 23:51:00,900 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 [2024-10-13 23:51:00,901 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 401 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:00,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 71 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-13 23:51:00,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10862 states. [2024-10-13 23:51:01,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10862 to 10860. [2024-10-13 23:51:01,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10860 states, 10859 states have (on average 1.0566350492678884) internal successors, (11474), 10859 states have internal predecessors, (11474), 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) [2024-10-13 23:51:01,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10860 states to 10860 states and 11474 transitions. [2024-10-13 23:51:01,100 INFO L78 Accepts]: Start accepts. Automaton has 10860 states and 11474 transitions. Word has length 600 [2024-10-13 23:51:01,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:01,101 INFO L471 AbstractCegarLoop]: Abstraction has 10860 states and 11474 transitions. [2024-10-13 23:51:01,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 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) [2024-10-13 23:51:01,105 INFO L276 IsEmpty]: Start isEmpty. Operand 10860 states and 11474 transitions. [2024-10-13 23:51:01,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2024-10-13 23:51:01,126 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:01,127 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 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] [2024-10-13 23:51:01,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 23:51:01,127 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:01,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:01,128 INFO L85 PathProgramCache]: Analyzing trace with hash 111642344, now seen corresponding path program 1 times [2024-10-13 23:51:01,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:01,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089047925] [2024-10-13 23:51:01,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:01,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:01,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1154 backedges. 909 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-13 23:51:01,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:01,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089047925] [2024-10-13 23:51:01,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089047925] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:01,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:51:01,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:51:01,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417029804] [2024-10-13 23:51:01,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:01,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:01,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:01,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:01,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:51:01,815 INFO L87 Difference]: Start difference. First operand 10860 states and 11474 transitions. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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) [2024-10-13 23:51:02,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:02,610 INFO L93 Difference]: Finished difference Result 25338 states and 26945 transitions. [2024-10-13 23:51:02,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:02,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 704 [2024-10-13 23:51:02,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:02,634 INFO L225 Difference]: With dead ends: 25338 [2024-10-13 23:51:02,634 INFO L226 Difference]: Without dead ends: 15137 [2024-10-13 23:51:02,647 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 [2024-10-13 23:51:02,647 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 222 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:02,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 34 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:51:02,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15137 states. [2024-10-13 23:51:02,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15137 to 15137. [2024-10-13 23:51:02,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15137 states, 15136 states have (on average 1.0602536997885834) internal successors, (16048), 15136 states have internal predecessors, (16048), 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) [2024-10-13 23:51:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15137 states to 15137 states and 16048 transitions. [2024-10-13 23:51:02,883 INFO L78 Accepts]: Start accepts. Automaton has 15137 states and 16048 transitions. Word has length 704 [2024-10-13 23:51:02,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:02,884 INFO L471 AbstractCegarLoop]: Abstraction has 15137 states and 16048 transitions. [2024-10-13 23:51:02,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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) [2024-10-13 23:51:02,884 INFO L276 IsEmpty]: Start isEmpty. Operand 15137 states and 16048 transitions. [2024-10-13 23:51:02,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2024-10-13 23:51:02,902 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:02,902 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2024-10-13 23:51:02,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 23:51:02,903 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:02,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:02,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1250304964, now seen corresponding path program 1 times [2024-10-13 23:51:02,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:02,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349119943] [2024-10-13 23:51:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:02,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 1285 proven. 0 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2024-10-13 23:51:04,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:04,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349119943] [2024-10-13 23:51:04,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349119943] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:04,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:51:04,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:51:04,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444803250] [2024-10-13 23:51:04,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:04,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:51:04,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:04,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:51:04,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:51:04,214 INFO L87 Difference]: Start difference. First operand 15137 states and 16048 transitions. Second operand has 4 states, 4 states have (on average 134.25) internal successors, (537), 3 states have internal predecessors, (537), 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) [2024-10-13 23:51:05,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:05,030 INFO L93 Difference]: Finished difference Result 29615 states and 31428 transitions. [2024-10-13 23:51:05,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:05,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 3 states have internal predecessors, (537), 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 961 [2024-10-13 23:51:05,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:05,051 INFO L225 Difference]: With dead ends: 29615 [2024-10-13 23:51:05,051 INFO L226 Difference]: Without dead ends: 15137 [2024-10-13 23:51:05,068 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 [2024-10-13 23:51:05,069 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 172 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:05,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 108 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:51:05,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15137 states. [2024-10-13 23:51:05,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15137 to 15137. [2024-10-13 23:51:05,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15137 states, 15136 states have (on average 1.0600554968287526) internal successors, (16045), 15136 states have internal predecessors, (16045), 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) [2024-10-13 23:51:05,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15137 states to 15137 states and 16045 transitions. [2024-10-13 23:51:05,252 INFO L78 Accepts]: Start accepts. Automaton has 15137 states and 16045 transitions. Word has length 961 [2024-10-13 23:51:05,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:05,253 INFO L471 AbstractCegarLoop]: Abstraction has 15137 states and 16045 transitions. [2024-10-13 23:51:05,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 3 states have internal predecessors, (537), 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) [2024-10-13 23:51:05,254 INFO L276 IsEmpty]: Start isEmpty. Operand 15137 states and 16045 transitions. [2024-10-13 23:51:05,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2024-10-13 23:51:05,271 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:05,272 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 23:51:05,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 23:51:05,272 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:05,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:05,273 INFO L85 PathProgramCache]: Analyzing trace with hash 784142056, now seen corresponding path program 1 times [2024-10-13 23:51:05,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:05,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730734127] [2024-10-13 23:51:05,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:05,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 1570 proven. 0 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2024-10-13 23:51:06,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:06,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730734127] [2024-10-13 23:51:06,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730734127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:06,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:51:06,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:51:06,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40860889] [2024-10-13 23:51:06,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:06,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:06,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:06,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:06,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:51:06,070 INFO L87 Difference]: Start difference. First operand 15137 states and 16045 transitions. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2024-10-13 23:51:06,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:06,911 INFO L93 Difference]: Finished difference Result 32576 states and 34647 transitions. [2024-10-13 23:51:06,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:06,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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 1022 [2024-10-13 23:51:06,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:06,947 INFO L225 Difference]: With dead ends: 32576 [2024-10-13 23:51:06,947 INFO L226 Difference]: Without dead ends: 18098 [2024-10-13 23:51:06,963 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 [2024-10-13 23:51:06,963 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 220 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:06,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 427 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 23:51:06,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18098 states. [2024-10-13 23:51:07,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18098 to 17111. [2024-10-13 23:51:07,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17111 states, 17110 states have (on average 1.0495616598480422) internal successors, (17958), 17110 states have internal predecessors, (17958), 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) [2024-10-13 23:51:07,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17111 states to 17111 states and 17958 transitions. [2024-10-13 23:51:07,160 INFO L78 Accepts]: Start accepts. Automaton has 17111 states and 17958 transitions. Word has length 1022 [2024-10-13 23:51:07,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:07,161 INFO L471 AbstractCegarLoop]: Abstraction has 17111 states and 17958 transitions. [2024-10-13 23:51:07,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2024-10-13 23:51:07,161 INFO L276 IsEmpty]: Start isEmpty. Operand 17111 states and 17958 transitions. [2024-10-13 23:51:07,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2024-10-13 23:51:07,179 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:07,179 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 23:51:07,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 23:51:07,180 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:07,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:07,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1487707703, now seen corresponding path program 1 times [2024-10-13 23:51:07,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:07,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160841123] [2024-10-13 23:51:07,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:07,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 1303 proven. 0 refuted. 0 times theorem prover too weak. 1084 trivial. 0 not checked. [2024-10-13 23:51:07,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:07,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160841123] [2024-10-13 23:51:07,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160841123] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:07,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:51:07,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:51:07,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535849162] [2024-10-13 23:51:07,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:07,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:07,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:07,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:07,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:51:07,931 INFO L87 Difference]: Start difference. First operand 17111 states and 17958 transitions. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 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) [2024-10-13 23:51:08,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:08,719 INFO L93 Difference]: Finished difference Result 34879 states and 36645 transitions. [2024-10-13 23:51:08,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:08,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 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 1023 [2024-10-13 23:51:08,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:08,739 INFO L225 Difference]: With dead ends: 34879 [2024-10-13 23:51:08,740 INFO L226 Difference]: Without dead ends: 18427 [2024-10-13 23:51:08,754 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 [2024-10-13 23:51:08,756 INFO L432 NwaCegarLoop]: 417 mSDtfsCounter, 192 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:08,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 422 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:51:08,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18427 states. [2024-10-13 23:51:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18427 to 17440. [2024-10-13 23:51:09,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17440 states, 17439 states have (on average 1.0426056539939217) internal successors, (18182), 17439 states have internal predecessors, (18182), 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) [2024-10-13 23:51:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17440 states to 17440 states and 18182 transitions. [2024-10-13 23:51:09,039 INFO L78 Accepts]: Start accepts. Automaton has 17440 states and 18182 transitions. Word has length 1023 [2024-10-13 23:51:09,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:09,039 INFO L471 AbstractCegarLoop]: Abstraction has 17440 states and 18182 transitions. [2024-10-13 23:51:09,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 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) [2024-10-13 23:51:09,040 INFO L276 IsEmpty]: Start isEmpty. Operand 17440 states and 18182 transitions. [2024-10-13 23:51:09,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2024-10-13 23:51:09,058 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:09,059 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 23:51:09,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 23:51:09,059 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:09,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:09,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1774608448, now seen corresponding path program 1 times [2024-10-13 23:51:09,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:09,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950146584] [2024-10-13 23:51:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:09,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:09,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2486 backedges. 1672 proven. 0 refuted. 0 times theorem prover too weak. 814 trivial. 0 not checked. [2024-10-13 23:51:09,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:09,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950146584] [2024-10-13 23:51:09,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950146584] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:09,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:51:09,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:51:09,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667489857] [2024-10-13 23:51:09,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:09,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:09,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:09,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:09,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:51:09,746 INFO L87 Difference]: Start difference. First operand 17440 states and 18182 transitions. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2024-10-13 23:51:10,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:10,524 INFO L93 Difference]: Finished difference Result 34221 states and 35699 transitions. [2024-10-13 23:51:10,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:10,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 1052 [2024-10-13 23:51:10,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:10,545 INFO L225 Difference]: With dead ends: 34221 [2024-10-13 23:51:10,546 INFO L226 Difference]: Without dead ends: 17440 [2024-10-13 23:51:10,560 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 [2024-10-13 23:51:10,561 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 193 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:10,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 421 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:51:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17440 states. [2024-10-13 23:51:10,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17440 to 16782. [2024-10-13 23:51:10,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16782 states, 16781 states have (on average 1.0323580239556642) internal successors, (17324), 16781 states have internal predecessors, (17324), 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) [2024-10-13 23:51:10,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16782 states to 16782 states and 17324 transitions. [2024-10-13 23:51:10,734 INFO L78 Accepts]: Start accepts. Automaton has 16782 states and 17324 transitions. Word has length 1052 [2024-10-13 23:51:10,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:10,735 INFO L471 AbstractCegarLoop]: Abstraction has 16782 states and 17324 transitions. [2024-10-13 23:51:10,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2024-10-13 23:51:10,736 INFO L276 IsEmpty]: Start isEmpty. Operand 16782 states and 17324 transitions. [2024-10-13 23:51:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2024-10-13 23:51:10,759 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:10,760 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-13 23:51:10,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 23:51:10,760 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:10,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:10,761 INFO L85 PathProgramCache]: Analyzing trace with hash -325582190, now seen corresponding path program 1 times [2024-10-13 23:51:10,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:10,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821154843] [2024-10-13 23:51:10,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:10,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:11,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1851 backedges. 856 proven. 0 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2024-10-13 23:51:11,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:11,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821154843] [2024-10-13 23:51:11,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821154843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:11,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:51:11,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:51:11,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489104018] [2024-10-13 23:51:11,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:11,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:11,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:11,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:11,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:51:11,814 INFO L87 Difference]: Start difference. First operand 16782 states and 17324 transitions. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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) [2024-10-13 23:51:12,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:12,555 INFO L93 Difference]: Finished difference Result 32905 states and 33983 transitions. [2024-10-13 23:51:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:12,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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 1062 [2024-10-13 23:51:12,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:12,570 INFO L225 Difference]: With dead ends: 32905 [2024-10-13 23:51:12,571 INFO L226 Difference]: Without dead ends: 16782 [2024-10-13 23:51:12,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:51:12,580 INFO L432 NwaCegarLoop]: 369 mSDtfsCounter, 95 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:12,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 374 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:51:12,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16782 states. [2024-10-13 23:51:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16782 to 16453. [2024-10-13 23:51:12,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16453 states, 16452 states have (on average 1.0285679552637976) internal successors, (16922), 16452 states have internal predecessors, (16922), 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) [2024-10-13 23:51:12,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16453 states to 16453 states and 16922 transitions. [2024-10-13 23:51:12,736 INFO L78 Accepts]: Start accepts. Automaton has 16453 states and 16922 transitions. Word has length 1062 [2024-10-13 23:51:12,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:12,737 INFO L471 AbstractCegarLoop]: Abstraction has 16453 states and 16922 transitions. [2024-10-13 23:51:12,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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) [2024-10-13 23:51:12,737 INFO L276 IsEmpty]: Start isEmpty. Operand 16453 states and 16922 transitions. [2024-10-13 23:51:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1200 [2024-10-13 23:51:12,753 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:12,754 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:51:12,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 23:51:12,754 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:12,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:12,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1582067563, now seen corresponding path program 1 times [2024-10-13 23:51:12,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:12,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282573398] [2024-10-13 23:51:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:12,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3060 backedges. 648 proven. 0 refuted. 0 times theorem prover too weak. 2412 trivial. 0 not checked. [2024-10-13 23:51:13,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:13,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282573398] [2024-10-13 23:51:13,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282573398] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:13,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:51:13,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:51:13,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013767117] [2024-10-13 23:51:13,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:13,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:13,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:13,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:13,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:51:13,817 INFO L87 Difference]: Start difference. First operand 16453 states and 16922 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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) [2024-10-13 23:51:14,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:14,658 INFO L93 Difference]: Finished difference Result 35537 states and 36639 transitions. [2024-10-13 23:51:14,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:14,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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 1199 [2024-10-13 23:51:14,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:14,678 INFO L225 Difference]: With dead ends: 35537 [2024-10-13 23:51:14,678 INFO L226 Difference]: Without dead ends: 18098 [2024-10-13 23:51:14,691 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 [2024-10-13 23:51:14,693 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 274 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:14,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 408 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:51:14,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18098 states. [2024-10-13 23:51:14,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18098 to 15795. [2024-10-13 23:51:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15795 states, 15794 states have (on average 1.0273521590477397) internal successors, (16226), 15794 states have internal predecessors, (16226), 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) [2024-10-13 23:51:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15795 states to 15795 states and 16226 transitions. [2024-10-13 23:51:14,848 INFO L78 Accepts]: Start accepts. Automaton has 15795 states and 16226 transitions. Word has length 1199 [2024-10-13 23:51:14,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:14,849 INFO L471 AbstractCegarLoop]: Abstraction has 15795 states and 16226 transitions. [2024-10-13 23:51:14,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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) [2024-10-13 23:51:14,849 INFO L276 IsEmpty]: Start isEmpty. Operand 15795 states and 16226 transitions. [2024-10-13 23:51:14,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1342 [2024-10-13 23:51:14,867 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:14,868 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 23:51:14,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 23:51:14,868 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:14,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:14,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1194780837, now seen corresponding path program 1 times [2024-10-13 23:51:14,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:14,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882033715] [2024-10-13 23:51:14,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:14,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3250 backedges. 511 proven. 1373 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2024-10-13 23:51:16,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:16,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882033715] [2024-10-13 23:51:16,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882033715] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:51:16,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797313417] [2024-10-13 23:51:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:16,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:16,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:51:16,378 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) [2024-10-13 23:51:16,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 23:51:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:16,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:51:16,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:51:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3250 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 2712 trivial. 0 not checked. [2024-10-13 23:51:16,987 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:51:16,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797313417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:16,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:51:16,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-13 23:51:16,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688049073] [2024-10-13 23:51:16,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:16,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:16,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:16,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:16,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:51:16,990 INFO L87 Difference]: Start difference. First operand 15795 states and 16226 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2024-10-13 23:51:17,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:17,691 INFO L93 Difference]: Finished difference Result 30931 states and 31787 transitions. [2024-10-13 23:51:17,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:17,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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 1341 [2024-10-13 23:51:17,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:17,708 INFO L225 Difference]: With dead ends: 30931 [2024-10-13 23:51:17,708 INFO L226 Difference]: Without dead ends: 15795 [2024-10-13 23:51:17,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1346 GetRequests, 1342 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:51:17,720 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 289 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:17,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 52 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:51:17,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15795 states. [2024-10-13 23:51:17,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15795 to 14479. [2024-10-13 23:51:17,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14479 states, 14478 states have (on average 1.0221715706589307) internal successors, (14799), 14478 states have internal predecessors, (14799), 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) [2024-10-13 23:51:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14479 states to 14479 states and 14799 transitions. [2024-10-13 23:51:17,840 INFO L78 Accepts]: Start accepts. Automaton has 14479 states and 14799 transitions. Word has length 1341 [2024-10-13 23:51:17,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:17,841 INFO L471 AbstractCegarLoop]: Abstraction has 14479 states and 14799 transitions. [2024-10-13 23:51:17,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2024-10-13 23:51:17,841 INFO L276 IsEmpty]: Start isEmpty. Operand 14479 states and 14799 transitions. [2024-10-13 23:51:17,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1389 [2024-10-13 23:51:17,855 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:17,855 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:51:17,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 23:51:18,056 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 [2024-10-13 23:51:18,057 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:18,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:18,057 INFO L85 PathProgramCache]: Analyzing trace with hash 762130295, now seen corresponding path program 1 times [2024-10-13 23:51:18,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:18,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527147448] [2024-10-13 23:51:18,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:18,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2911 backedges. 1894 proven. 44 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2024-10-13 23:51:20,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:20,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527147448] [2024-10-13 23:51:20,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527147448] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:51:20,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042953588] [2024-10-13 23:51:20,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:20,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:20,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:51:20,075 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) [2024-10-13 23:51:20,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 23:51:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:20,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:51:20,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:51:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2911 backedges. 1916 proven. 0 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2024-10-13 23:51:21,239 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:51:21,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042953588] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:21,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:51:21,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-13 23:51:21,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968707903] [2024-10-13 23:51:21,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:21,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:21,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:21,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:21,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:51:21,244 INFO L87 Difference]: Start difference. First operand 14479 states and 14799 transitions. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 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) [2024-10-13 23:51:21,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:21,897 INFO L93 Difference]: Finished difference Result 28299 states and 28933 transitions. [2024-10-13 23:51:21,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:21,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 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 1388 [2024-10-13 23:51:21,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:21,910 INFO L225 Difference]: With dead ends: 28299 [2024-10-13 23:51:21,911 INFO L226 Difference]: Without dead ends: 14479 [2024-10-13 23:51:21,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1394 GetRequests, 1389 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:51:21,918 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 62 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:21,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 425 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:51:21,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2024-10-13 23:51:21,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 14479. [2024-10-13 23:51:22,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14479 states, 14478 states have (on average 1.0220334300317724) internal successors, (14797), 14478 states have internal predecessors, (14797), 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) [2024-10-13 23:51:22,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14479 states to 14479 states and 14797 transitions. [2024-10-13 23:51:22,016 INFO L78 Accepts]: Start accepts. Automaton has 14479 states and 14797 transitions. Word has length 1388 [2024-10-13 23:51:22,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:22,016 INFO L471 AbstractCegarLoop]: Abstraction has 14479 states and 14797 transitions. [2024-10-13 23:51:22,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 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) [2024-10-13 23:51:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 14479 states and 14797 transitions. [2024-10-13 23:51:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1437 [2024-10-13 23:51:22,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:22,074 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2024-10-13 23:51:22,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 23:51:22,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 23:51:22,275 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:22,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:22,276 INFO L85 PathProgramCache]: Analyzing trace with hash 466011936, now seen corresponding path program 1 times [2024-10-13 23:51:22,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:22,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862108724] [2024-10-13 23:51:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:22,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3846 backedges. 1864 proven. 0 refuted. 0 times theorem prover too weak. 1982 trivial. 0 not checked. [2024-10-13 23:51:23,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:23,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862108724] [2024-10-13 23:51:23,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862108724] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:23,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:51:23,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:51:23,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974553863] [2024-10-13 23:51:23,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:23,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:23,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:23,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:23,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:51:23,414 INFO L87 Difference]: Start difference. First operand 14479 states and 14797 transitions. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 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) [2024-10-13 23:51:24,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:24,050 INFO L93 Difference]: Finished difference Result 28957 states and 29598 transitions. [2024-10-13 23:51:24,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:24,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 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 1436 [2024-10-13 23:51:24,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:24,061 INFO L225 Difference]: With dead ends: 28957 [2024-10-13 23:51:24,061 INFO L226 Difference]: Without dead ends: 15137 [2024-10-13 23:51:24,068 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 [2024-10-13 23:51:24,068 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 224 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:24,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 429 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:51:24,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15137 states. [2024-10-13 23:51:24,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15137 to 15137. [2024-10-13 23:51:24,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15137 states, 15136 states have (on average 1.0214059196617336) internal successors, (15460), 15136 states have internal predecessors, (15460), 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) [2024-10-13 23:51:24,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15137 states to 15137 states and 15460 transitions. [2024-10-13 23:51:24,220 INFO L78 Accepts]: Start accepts. Automaton has 15137 states and 15460 transitions. Word has length 1436 [2024-10-13 23:51:24,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:24,221 INFO L471 AbstractCegarLoop]: Abstraction has 15137 states and 15460 transitions. [2024-10-13 23:51:24,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 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) [2024-10-13 23:51:24,222 INFO L276 IsEmpty]: Start isEmpty. Operand 15137 states and 15460 transitions. [2024-10-13 23:51:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1460 [2024-10-13 23:51:24,242 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:24,243 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:51:24,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 23:51:24,243 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:24,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:24,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1123552101, now seen corresponding path program 1 times [2024-10-13 23:51:24,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:24,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916601857] [2024-10-13 23:51:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:24,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3700 backedges. 2501 proven. 29 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2024-10-13 23:51:25,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:25,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916601857] [2024-10-13 23:51:25,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916601857] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:51:25,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700217738] [2024-10-13 23:51:25,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:25,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:25,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:51:25,926 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:51:25,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 23:51:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:26,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:51:26,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:51:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3700 backedges. 1284 proven. 0 refuted. 0 times theorem prover too weak. 2416 trivial. 0 not checked. [2024-10-13 23:51:27,204 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:51:27,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700217738] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:27,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:51:27,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-10-13 23:51:27,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619534121] [2024-10-13 23:51:27,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:27,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:27,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:27,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:27,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-13 23:51:27,210 INFO L87 Difference]: Start difference. First operand 15137 states and 15460 transitions. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 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) [2024-10-13 23:51:27,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:27,897 INFO L93 Difference]: Finished difference Result 29615 states and 30255 transitions. [2024-10-13 23:51:27,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:27,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 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 1459 [2024-10-13 23:51:27,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:27,911 INFO L225 Difference]: With dead ends: 29615 [2024-10-13 23:51:27,911 INFO L226 Difference]: Without dead ends: 15137 [2024-10-13 23:51:27,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1467 GetRequests, 1460 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-13 23:51:27,920 INFO L432 NwaCegarLoop]: 417 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:27,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 421 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:51:27,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15137 states. [2024-10-13 23:51:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15137 to 15137. [2024-10-13 23:51:28,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15137 states, 15136 states have (on average 1.021075581395349) internal successors, (15455), 15136 states have internal predecessors, (15455), 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) [2024-10-13 23:51:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15137 states to 15137 states and 15455 transitions. [2024-10-13 23:51:28,036 INFO L78 Accepts]: Start accepts. Automaton has 15137 states and 15455 transitions. Word has length 1459 [2024-10-13 23:51:28,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:28,037 INFO L471 AbstractCegarLoop]: Abstraction has 15137 states and 15455 transitions. [2024-10-13 23:51:28,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 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) [2024-10-13 23:51:28,037 INFO L276 IsEmpty]: Start isEmpty. Operand 15137 states and 15455 transitions. [2024-10-13 23:51:28,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1462 [2024-10-13 23:51:28,056 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:28,057 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 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] [2024-10-13 23:51:28,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 23:51:28,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:28,258 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:28,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:28,258 INFO L85 PathProgramCache]: Analyzing trace with hash 430475708, now seen corresponding path program 1 times [2024-10-13 23:51:28,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:28,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033797662] [2024-10-13 23:51:28,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:28,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3419 backedges. 2084 proven. 0 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-10-13 23:51:29,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:29,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033797662] [2024-10-13 23:51:29,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033797662] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:29,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:51:29,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 23:51:29,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388263522] [2024-10-13 23:51:29,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:29,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:51:29,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:29,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:51:29,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:51:29,661 INFO L87 Difference]: Start difference. First operand 15137 states and 15455 transitions. Second operand has 4 states, 4 states have (on average 211.25) internal successors, (845), 4 states have internal predecessors, (845), 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) [2024-10-13 23:51:30,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:30,508 INFO L93 Difference]: Finished difference Result 29615 states and 30245 transitions. [2024-10-13 23:51:30,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:51:30,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 211.25) internal successors, (845), 4 states have internal predecessors, (845), 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 1461 [2024-10-13 23:51:30,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:30,521 INFO L225 Difference]: With dead ends: 29615 [2024-10-13 23:51:30,521 INFO L226 Difference]: Without dead ends: 15137 [2024-10-13 23:51:30,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:51:30,530 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 120 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:30,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 551 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 23:51:30,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15137 states. [2024-10-13 23:51:30,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15137 to 15137. [2024-10-13 23:51:30,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15137 states, 15136 states have (on average 1.0202827695560253) internal successors, (15443), 15136 states have internal predecessors, (15443), 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) [2024-10-13 23:51:30,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15137 states to 15137 states and 15443 transitions. [2024-10-13 23:51:30,637 INFO L78 Accepts]: Start accepts. Automaton has 15137 states and 15443 transitions. Word has length 1461 [2024-10-13 23:51:30,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:30,637 INFO L471 AbstractCegarLoop]: Abstraction has 15137 states and 15443 transitions. [2024-10-13 23:51:30,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 211.25) internal successors, (845), 4 states have internal predecessors, (845), 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) [2024-10-13 23:51:30,638 INFO L276 IsEmpty]: Start isEmpty. Operand 15137 states and 15443 transitions. [2024-10-13 23:51:30,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1623 [2024-10-13 23:51:30,653 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:30,654 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:51:30,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 23:51:30,654 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:30,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:30,654 INFO L85 PathProgramCache]: Analyzing trace with hash 728031862, now seen corresponding path program 1 times [2024-10-13 23:51:30,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:30,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318627739] [2024-10-13 23:51:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:30,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4271 backedges. 2961 proven. 0 refuted. 0 times theorem prover too weak. 1310 trivial. 0 not checked. [2024-10-13 23:51:32,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:32,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318627739] [2024-10-13 23:51:32,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318627739] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:32,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:51:32,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 23:51:32,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383697077] [2024-10-13 23:51:32,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:32,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 23:51:32,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:32,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 23:51:32,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-13 23:51:32,756 INFO L87 Difference]: Start difference. First operand 15137 states and 15443 transitions. Second operand has 9 states, 9 states have (on average 95.44444444444444) internal successors, (859), 9 states have internal predecessors, (859), 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) [2024-10-13 23:51:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:37,451 INFO L93 Difference]: Finished difference Result 41548 states and 42398 transitions. [2024-10-13 23:51:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 23:51:37,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 95.44444444444444) internal successors, (859), 9 states have internal predecessors, (859), 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 1622 [2024-10-13 23:51:37,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:37,477 INFO L225 Difference]: With dead ends: 41548 [2024-10-13 23:51:37,478 INFO L226 Difference]: Without dead ends: 27070 [2024-10-13 23:51:37,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2024-10-13 23:51:37,491 INFO L432 NwaCegarLoop]: 417 mSDtfsCounter, 1125 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 9234 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 9262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 9234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:37,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 798 Invalid, 9262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 9234 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-10-13 23:51:37,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27070 states. [2024-10-13 23:51:37,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27070 to 14808. [2024-10-13 23:51:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14808 states, 14807 states have (on average 1.019652866887283) internal successors, (15098), 14807 states have internal predecessors, (15098), 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) [2024-10-13 23:51:37,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14808 states to 14808 states and 15098 transitions. [2024-10-13 23:51:37,649 INFO L78 Accepts]: Start accepts. Automaton has 14808 states and 15098 transitions. Word has length 1622 [2024-10-13 23:51:37,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:37,650 INFO L471 AbstractCegarLoop]: Abstraction has 14808 states and 15098 transitions. [2024-10-13 23:51:37,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 95.44444444444444) internal successors, (859), 9 states have internal predecessors, (859), 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) [2024-10-13 23:51:37,651 INFO L276 IsEmpty]: Start isEmpty. Operand 14808 states and 15098 transitions. [2024-10-13 23:51:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1895 [2024-10-13 23:51:37,670 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:37,670 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:51:37,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-13 23:51:37,671 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:37,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:37,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1979175029, now seen corresponding path program 1 times [2024-10-13 23:51:37,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:37,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143344608] [2024-10-13 23:51:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:37,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:39,387 INFO L134 CoverageAnalysis]: Checked inductivity of 7108 backedges. 3588 proven. 0 refuted. 0 times theorem prover too weak. 3520 trivial. 0 not checked. [2024-10-13 23:51:39,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:39,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143344608] [2024-10-13 23:51:39,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143344608] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:39,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:51:39,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:51:39,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022066973] [2024-10-13 23:51:39,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:39,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:39,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:39,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:39,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:51:39,390 INFO L87 Difference]: Start difference. First operand 14808 states and 15098 transitions. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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) [2024-10-13 23:51:40,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:40,111 INFO L93 Difference]: Finished difference Result 32905 states and 33557 transitions. [2024-10-13 23:51:40,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:40,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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 1894 [2024-10-13 23:51:40,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:40,132 INFO L225 Difference]: With dead ends: 32905 [2024-10-13 23:51:40,132 INFO L226 Difference]: Without dead ends: 18756 [2024-10-13 23:51:40,142 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 [2024-10-13 23:51:40,143 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 208 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:40,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 48 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:51:40,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18756 states. [2024-10-13 23:51:40,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18756 to 16124. [2024-10-13 23:51:40,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16124 states, 16123 states have (on average 1.0195373069528004) internal successors, (16438), 16123 states have internal predecessors, (16438), 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) [2024-10-13 23:51:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16124 states to 16124 states and 16438 transitions. [2024-10-13 23:51:40,277 INFO L78 Accepts]: Start accepts. Automaton has 16124 states and 16438 transitions. Word has length 1894 [2024-10-13 23:51:40,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:40,277 INFO L471 AbstractCegarLoop]: Abstraction has 16124 states and 16438 transitions. [2024-10-13 23:51:40,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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) [2024-10-13 23:51:40,278 INFO L276 IsEmpty]: Start isEmpty. Operand 16124 states and 16438 transitions. [2024-10-13 23:51:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1936 [2024-10-13 23:51:40,347 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:40,347 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:51:40,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-13 23:51:40,347 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:40,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:40,348 INFO L85 PathProgramCache]: Analyzing trace with hash -652180158, now seen corresponding path program 1 times [2024-10-13 23:51:40,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:40,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987047758] [2024-10-13 23:51:40,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:40,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7895 backedges. 5615 proven. 140 refuted. 0 times theorem prover too weak. 2140 trivial. 0 not checked. [2024-10-13 23:51:42,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:42,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987047758] [2024-10-13 23:51:42,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987047758] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:51:42,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678423756] [2024-10-13 23:51:42,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:42,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:42,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:51:42,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:51:42,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 23:51:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:42,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 2247 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:51:42,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:51:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7895 backedges. 4767 proven. 0 refuted. 0 times theorem prover too weak. 3128 trivial. 0 not checked. [2024-10-13 23:51:42,858 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:51:42,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678423756] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:42,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:51:42,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-13 23:51:42,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858324014] [2024-10-13 23:51:42,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:42,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:42,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:42,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:42,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:51:42,862 INFO L87 Difference]: Start difference. First operand 16124 states and 16438 transitions. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 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) [2024-10-13 23:51:43,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:43,598 INFO L93 Difference]: Finished difference Result 33234 states and 33882 transitions. [2024-10-13 23:51:43,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:43,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 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 1935 [2024-10-13 23:51:43,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:43,613 INFO L225 Difference]: With dead ends: 33234 [2024-10-13 23:51:43,613 INFO L226 Difference]: Without dead ends: 17769 [2024-10-13 23:51:43,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1940 GetRequests, 1935 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:51:43,623 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 221 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:43,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 424 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:51:43,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17769 states. [2024-10-13 23:51:43,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17769 to 16782. [2024-10-13 23:51:43,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16782 states, 16781 states have (on average 1.018413682140516) internal successors, (17090), 16781 states have internal predecessors, (17090), 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) [2024-10-13 23:51:43,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16782 states to 16782 states and 17090 transitions. [2024-10-13 23:51:43,782 INFO L78 Accepts]: Start accepts. Automaton has 16782 states and 17090 transitions. Word has length 1935 [2024-10-13 23:51:43,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:43,783 INFO L471 AbstractCegarLoop]: Abstraction has 16782 states and 17090 transitions. [2024-10-13 23:51:43,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 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) [2024-10-13 23:51:43,784 INFO L276 IsEmpty]: Start isEmpty. Operand 16782 states and 17090 transitions. [2024-10-13 23:51:43,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1967 [2024-10-13 23:51:43,805 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:43,806 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:51:43,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 23:51:44,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:44,007 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:44,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:44,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1047033051, now seen corresponding path program 1 times [2024-10-13 23:51:44,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:44,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86207416] [2024-10-13 23:51:44,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:44,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 8276 backedges. 6167 proven. 78 refuted. 0 times theorem prover too weak. 2031 trivial. 0 not checked. [2024-10-13 23:51:46,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:46,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86207416] [2024-10-13 23:51:46,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86207416] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:51:46,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910746203] [2024-10-13 23:51:46,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:46,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:46,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:51:46,118 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:51:46,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 23:51:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:46,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 2281 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:51:46,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:51:47,303 INFO L134 CoverageAnalysis]: Checked inductivity of 8276 backedges. 1464 proven. 0 refuted. 0 times theorem prover too weak. 6812 trivial. 0 not checked. [2024-10-13 23:51:47,304 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:51:47,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910746203] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:47,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:51:47,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-13 23:51:47,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748690933] [2024-10-13 23:51:47,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:47,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:47,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:47,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:47,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:51:47,307 INFO L87 Difference]: Start difference. First operand 16782 states and 17090 transitions. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2024-10-13 23:51:48,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:48,233 INFO L93 Difference]: Finished difference Result 35866 states and 36531 transitions. [2024-10-13 23:51:48,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:48,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 1966 [2024-10-13 23:51:48,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:48,250 INFO L225 Difference]: With dead ends: 35866 [2024-10-13 23:51:48,250 INFO L226 Difference]: Without dead ends: 19743 [2024-10-13 23:51:48,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1971 GetRequests, 1966 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:51:48,260 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 215 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:48,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 29 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 23:51:48,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19743 states. [2024-10-13 23:51:48,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19743 to 16782. [2024-10-13 23:51:48,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16782 states, 16781 states have (on average 1.0185328645491925) internal successors, (17092), 16781 states have internal predecessors, (17092), 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) [2024-10-13 23:51:48,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16782 states to 16782 states and 17092 transitions. [2024-10-13 23:51:48,407 INFO L78 Accepts]: Start accepts. Automaton has 16782 states and 17092 transitions. Word has length 1966 [2024-10-13 23:51:48,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:48,408 INFO L471 AbstractCegarLoop]: Abstraction has 16782 states and 17092 transitions. [2024-10-13 23:51:48,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2024-10-13 23:51:48,408 INFO L276 IsEmpty]: Start isEmpty. Operand 16782 states and 17092 transitions. [2024-10-13 23:51:48,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2033 [2024-10-13 23:51:48,430 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:48,430 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 23:51:48,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 23:51:48,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-13 23:51:48,631 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:48,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:48,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1427963328, now seen corresponding path program 1 times [2024-10-13 23:51:48,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:48,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70586848] [2024-10-13 23:51:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:48,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8527 backedges. 6352 proven. 78 refuted. 0 times theorem prover too weak. 2097 trivial. 0 not checked. [2024-10-13 23:51:50,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:50,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70586848] [2024-10-13 23:51:50,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70586848] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:51:50,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136013367] [2024-10-13 23:51:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:50,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:50,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:51:50,767 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:51:50,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 23:51:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:51,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 2347 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 23:51:51,265 INFO L278 TraceCheckSpWp]: Computing forward predicates...