./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/Problem18_label34.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/Problem18_label34.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 e1cbdf83c230cb7b5e875433a1d81cdf13003742b706b294fab4c2a4e0869f21 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 00:02:48,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 00:02:48,586 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 00:02:48,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 00:02:48,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 00:02:48,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 00:02:48,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 00:02:48,611 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 00:02:48,612 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 00:02:48,612 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 00:02:48,612 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 00:02:48,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 00:02:48,613 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 00:02:48,613 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 00:02:48,613 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 00:02:48,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 00:02:48,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 00:02:48,614 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 00:02:48,615 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 00:02:48,615 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 00:02:48,615 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 00:02:48,616 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 00:02:48,616 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 00:02:48,616 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 00:02:48,616 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 00:02:48,617 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 00:02:48,617 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 00:02:48,617 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 00:02:48,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 00:02:48,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 00:02:48,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 00:02:48,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 00:02:48,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 00:02:48,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 00:02:48,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 00:02:48,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 00:02:48,622 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 00:02:48,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 00:02:48,622 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 00:02:48,623 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 00:02:48,623 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 00:02:48,623 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 00:02:48,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1cbdf83c230cb7b5e875433a1d81cdf13003742b706b294fab4c2a4e0869f21 [2024-10-14 00:02:48,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 00:02:48,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 00:02:48,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 00:02:48,860 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 00:02:48,860 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 00:02:48,861 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label34.c [2024-10-14 00:02:50,201 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 00:02:50,533 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 00:02:50,534 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label34.c [2024-10-14 00:02:50,557 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d3dde8a/b92710bacd1a4d6885e50736744bba49/FLAGec952e769 [2024-10-14 00:02:50,569 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d3dde8a/b92710bacd1a4d6885e50736744bba49 [2024-10-14 00:02:50,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 00:02:50,573 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 00:02:50,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 00:02:50,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 00:02:50,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 00:02:50,580 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:02:50" (1/1) ... [2024-10-14 00:02:50,581 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8a713f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:02:50, skipping insertion in model container [2024-10-14 00:02:50,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:02:50" (1/1) ... [2024-10-14 00:02:50,676 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 00:02:50,851 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/Problem18_label34.c[1169,1182] [2024-10-14 00:02:51,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 00:02:51,336 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 00:02:51,349 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/Problem18_label34.c[1169,1182] [2024-10-14 00:02:51,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 00:02:51,657 INFO L204 MainTranslator]: Completed translation [2024-10-14 00:02:51,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:02:51 WrapperNode [2024-10-14 00:02:51,658 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 00:02:51,659 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 00:02:51,659 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 00:02:51,659 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 00:02:51,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:02:51" (1/1) ... [2024-10-14 00:02:51,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:02:51" (1/1) ... [2024-10-14 00:02:51,839 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4135 [2024-10-14 00:02:51,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 00:02:51,840 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 00:02:51,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 00:02:51,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 00:02:51,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:02:51" (1/1) ... [2024-10-14 00:02:51,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:02:51" (1/1) ... [2024-10-14 00:02:51,872 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:02:51" (1/1) ... [2024-10-14 00:02:52,037 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]. [2024-10-14 00:02:52,038 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:02:51" (1/1) ... [2024-10-14 00:02:52,038 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:02:51" (1/1) ... [2024-10-14 00:02:52,113 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:02:51" (1/1) ... [2024-10-14 00:02:52,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:02:51" (1/1) ... [2024-10-14 00:02:52,162 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:02:51" (1/1) ... [2024-10-14 00:02:52,173 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:02:51" (1/1) ... [2024-10-14 00:02:52,194 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 00:02:52,195 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 00:02:52,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 00:02:52,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 00:02:52,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:02:51" (1/1) ... [2024-10-14 00:02:52,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 00:02:52,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:02:52,222 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) [2024-10-14 00:02:52,224 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 [2024-10-14 00:02:52,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 00:02:52,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 00:02:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 00:02:52,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 00:02:52,336 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 00:02:52,338 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 00:02:55,188 INFO L? ?]: Removed 639 outVars from TransFormulas that were not future-live. [2024-10-14 00:02:55,188 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 00:02:55,239 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 00:02:55,240 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 00:02:55,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:02:55 BoogieIcfgContainer [2024-10-14 00:02:55,240 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 00:02:55,242 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 00:02:55,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 00:02:55,245 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 00:02:55,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:02:50" (1/3) ... [2024-10-14 00:02:55,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151bb0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:02:55, skipping insertion in model container [2024-10-14 00:02:55,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:02:51" (2/3) ... [2024-10-14 00:02:55,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151bb0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:02:55, skipping insertion in model container [2024-10-14 00:02:55,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:02:55" (3/3) ... [2024-10-14 00:02:55,248 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label34.c [2024-10-14 00:02:55,263 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 00:02:55,263 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 00:02:55,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 00:02:55,339 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;@53cad34a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 00:02:55,339 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 00:02:55,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:02:55,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-14 00:02:55,351 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:02:55,351 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 00:02:55,352 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:02:55,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:02:55,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2065506666, now seen corresponding path program 1 times [2024-10-14 00:02:55,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:02:55,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680546014] [2024-10-14 00:02:55,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:02:55,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:02:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:02:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:02:55,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:02:55,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680546014] [2024-10-14 00:02:55,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680546014] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:02:55,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:02:55,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 00:02:55,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076747346] [2024-10-14 00:02:55,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:02:55,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:02:55,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:02:55,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:02:55,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:02:55,547 INFO L87 Difference]: Start difference. First operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:02:57,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:02:57,958 INFO L93 Difference]: Finished difference Result 2081 states and 4142 transitions. [2024-10-14 00:02:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:02:57,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-10-14 00:02:57,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:02:57,978 INFO L225 Difference]: With dead ends: 2081 [2024-10-14 00:02:57,979 INFO L226 Difference]: Without dead ends: 1383 [2024-10-14 00:02:57,983 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 [2024-10-14 00:02:57,985 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 771 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 2669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-14 00:02:57,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 437 Invalid, 2669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-14 00:02:58,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2024-10-14 00:02:58,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1383. [2024-10-14 00:02:58,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 1.5998552821997105) internal successors, (2211), 1382 states have internal predecessors, (2211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:02:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 2211 transitions. [2024-10-14 00:02:58,064 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 2211 transitions. Word has length 6 [2024-10-14 00:02:58,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:02:58,065 INFO L471 AbstractCegarLoop]: Abstraction has 1383 states and 2211 transitions. [2024-10-14 00:02:58,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:02:58,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 2211 transitions. [2024-10-14 00:02:58,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-14 00:02:58,067 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:02:58,067 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 00:02:58,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 00:02:58,067 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:02:58,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:02:58,068 INFO L85 PathProgramCache]: Analyzing trace with hash 600314557, now seen corresponding path program 1 times [2024-10-14 00:02:58,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:02:58,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704541530] [2024-10-14 00:02:58,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:02:58,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:02:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:02:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:02:58,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:02:58,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704541530] [2024-10-14 00:02:58,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704541530] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:02:58,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:02:58,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 00:02:58,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437020300] [2024-10-14 00:02:58,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:02:58,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:02:58,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:02:58,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:02:58,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:02:58,270 INFO L87 Difference]: Start difference. First operand 1383 states and 2211 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:00,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:00,383 INFO L93 Difference]: Finished difference Result 4145 states and 6630 transitions. [2024-10-14 00:03:00,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:03:00,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2024-10-14 00:03:00,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:00,393 INFO L225 Difference]: With dead ends: 4145 [2024-10-14 00:03:00,394 INFO L226 Difference]: Without dead ends: 2763 [2024-10-14 00:03:00,397 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 [2024-10-14 00:03:00,398 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 714 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:00,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 527 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-14 00:03:00,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2024-10-14 00:03:00,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2024-10-14 00:03:00,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.3504706734250542) internal successors, (3730), 2762 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:00,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3730 transitions. [2024-10-14 00:03:00,467 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3730 transitions. Word has length 71 [2024-10-14 00:03:00,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:00,468 INFO L471 AbstractCegarLoop]: Abstraction has 2763 states and 3730 transitions. [2024-10-14 00:03:00,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:00,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3730 transitions. [2024-10-14 00:03:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-10-14 00:03:00,477 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:00,478 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:03:00,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 00:03:00,479 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:00,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:00,479 INFO L85 PathProgramCache]: Analyzing trace with hash 102747077, now seen corresponding path program 1 times [2024-10-14 00:03:00,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:00,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687382094] [2024-10-14 00:03:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:00,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 00:03:01,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:01,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687382094] [2024-10-14 00:03:01,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687382094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:01,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:03:01,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:03:01,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412742359] [2024-10-14 00:03:01,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:01,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 00:03:01,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:01,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 00:03:01,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 00:03:01,009 INFO L87 Difference]: Start difference. First operand 2763 states and 3730 transitions. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:03,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:03,918 INFO L93 Difference]: Finished difference Result 6905 states and 9073 transitions. [2024-10-14 00:03:03,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 00:03:03,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 189 [2024-10-14 00:03:03,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:03,929 INFO L225 Difference]: With dead ends: 6905 [2024-10-14 00:03:03,930 INFO L226 Difference]: Without dead ends: 4143 [2024-10-14 00:03:03,932 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 [2024-10-14 00:03:03,933 INFO L432 NwaCegarLoop]: 621 mSDtfsCounter, 1873 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4085 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 4275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 4085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:03,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 638 Invalid, 4275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 4085 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-14 00:03:03,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2024-10-14 00:03:03,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4143. [2024-10-14 00:03:03,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 4142 states have (on average 1.2467407049734427) internal successors, (5164), 4142 states have internal predecessors, (5164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 5164 transitions. [2024-10-14 00:03:03,994 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 5164 transitions. Word has length 189 [2024-10-14 00:03:03,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:03,995 INFO L471 AbstractCegarLoop]: Abstraction has 4143 states and 5164 transitions. [2024-10-14 00:03:03,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:03,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 5164 transitions. [2024-10-14 00:03:04,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-10-14 00:03:04,002 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:04,002 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:03:04,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 00:03:04,003 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:04,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:04,004 INFO L85 PathProgramCache]: Analyzing trace with hash 553439303, now seen corresponding path program 1 times [2024-10-14 00:03:04,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:04,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075483594] [2024-10-14 00:03:04,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:04,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:03:04,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:04,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075483594] [2024-10-14 00:03:04,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075483594] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:04,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:03:04,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:03:04,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125266844] [2024-10-14 00:03:04,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:04,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:03:04,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:04,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:03:04,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:03:04,199 INFO L87 Difference]: Start difference. First operand 4143 states and 5164 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:06,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:06,019 INFO L93 Difference]: Finished difference Result 11735 states and 14757 transitions. [2024-10-14 00:03:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:03:06,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 305 [2024-10-14 00:03:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:06,037 INFO L225 Difference]: With dead ends: 11735 [2024-10-14 00:03:06,038 INFO L226 Difference]: Without dead ends: 7593 [2024-10-14 00:03:06,044 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 [2024-10-14 00:03:06,047 INFO L432 NwaCegarLoop]: 815 mSDtfsCounter, 699 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 2792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:06,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 821 Invalid, 2792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-14 00:03:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7593 states. [2024-10-14 00:03:06,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7593 to 7593. [2024-10-14 00:03:06,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7593 states, 7592 states have (on average 1.2413066385669125) internal successors, (9424), 7592 states have internal predecessors, (9424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:06,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7593 states to 7593 states and 9424 transitions. [2024-10-14 00:03:06,151 INFO L78 Accepts]: Start accepts. Automaton has 7593 states and 9424 transitions. Word has length 305 [2024-10-14 00:03:06,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:06,153 INFO L471 AbstractCegarLoop]: Abstraction has 7593 states and 9424 transitions. [2024-10-14 00:03:06,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:06,154 INFO L276 IsEmpty]: Start isEmpty. Operand 7593 states and 9424 transitions. [2024-10-14 00:03:06,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-10-14 00:03:06,156 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:06,156 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:03:06,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 00:03:06,156 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:06,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:06,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1603009826, now seen corresponding path program 1 times [2024-10-14 00:03:06,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:06,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386598684] [2024-10-14 00:03:06,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:06,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:03:06,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:06,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386598684] [2024-10-14 00:03:06,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386598684] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:06,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:03:06,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:03:06,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115411282] [2024-10-14 00:03:06,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:06,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:03:06,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:06,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:03:06,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:03:06,339 INFO L87 Difference]: Start difference. First operand 7593 states and 9424 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:08,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:08,279 INFO L93 Difference]: Finished difference Result 17255 states and 21873 transitions. [2024-10-14 00:03:08,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:03:08,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 312 [2024-10-14 00:03:08,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:08,319 INFO L225 Difference]: With dead ends: 17255 [2024-10-14 00:03:08,319 INFO L226 Difference]: Without dead ends: 10353 [2024-10-14 00:03:08,328 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 [2024-10-14 00:03:08,329 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 700 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:08,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 98 Invalid, 2848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-14 00:03:08,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10353 states. [2024-10-14 00:03:08,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10353 to 9663. [2024-10-14 00:03:08,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9663 states, 9662 states have (on average 1.2808942247981785) internal successors, (12376), 9662 states have internal predecessors, (12376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:08,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9663 states to 9663 states and 12376 transitions. [2024-10-14 00:03:08,475 INFO L78 Accepts]: Start accepts. Automaton has 9663 states and 12376 transitions. Word has length 312 [2024-10-14 00:03:08,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:08,475 INFO L471 AbstractCegarLoop]: Abstraction has 9663 states and 12376 transitions. [2024-10-14 00:03:08,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:08,476 INFO L276 IsEmpty]: Start isEmpty. Operand 9663 states and 12376 transitions. [2024-10-14 00:03:08,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2024-10-14 00:03:08,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:08,483 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-14 00:03:08,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 00:03:08,483 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:08,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:08,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1834231251, now seen corresponding path program 1 times [2024-10-14 00:03:08,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:08,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373432170] [2024-10-14 00:03:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:08,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-14 00:03:08,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:08,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373432170] [2024-10-14 00:03:08,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373432170] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:08,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:03:08,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:03:08,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958049723] [2024-10-14 00:03:08,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:08,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 00:03:08,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:08,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 00:03:08,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 00:03:08,861 INFO L87 Difference]: Start difference. First operand 9663 states and 12376 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:10,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:10,653 INFO L93 Difference]: Finished difference Result 20758 states and 26232 transitions. [2024-10-14 00:03:10,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 00:03:10,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 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 371 [2024-10-14 00:03:10,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:10,675 INFO L225 Difference]: With dead ends: 20758 [2024-10-14 00:03:10,675 INFO L226 Difference]: Without dead ends: 11733 [2024-10-14 00:03:10,683 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 [2024-10-14 00:03:10,683 INFO L432 NwaCegarLoop]: 623 mSDtfsCounter, 529 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:10,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 634 Invalid, 2972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-14 00:03:10,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11733 states. [2024-10-14 00:03:10,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11733 to 11733. [2024-10-14 00:03:10,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11733 states, 11732 states have (on average 1.1783157176951926) internal successors, (13824), 11732 states have internal predecessors, (13824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:10,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11733 states to 11733 states and 13824 transitions. [2024-10-14 00:03:10,805 INFO L78 Accepts]: Start accepts. Automaton has 11733 states and 13824 transitions. Word has length 371 [2024-10-14 00:03:10,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:10,805 INFO L471 AbstractCegarLoop]: Abstraction has 11733 states and 13824 transitions. [2024-10-14 00:03:10,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:10,806 INFO L276 IsEmpty]: Start isEmpty. Operand 11733 states and 13824 transitions. [2024-10-14 00:03:10,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-10-14 00:03:10,809 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:10,809 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:03:10,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 00:03:10,810 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:10,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:10,810 INFO L85 PathProgramCache]: Analyzing trace with hash 848979122, now seen corresponding path program 1 times [2024-10-14 00:03:10,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:10,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888432233] [2024-10-14 00:03:10,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:10,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:11,176 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:03:11,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:11,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888432233] [2024-10-14 00:03:11,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888432233] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:11,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:03:11,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:03:11,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102701762] [2024-10-14 00:03:11,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:11,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:03:11,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:11,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:03:11,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:03:11,179 INFO L87 Difference]: Start difference. First operand 11733 states and 13824 transitions. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:12,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:12,817 INFO L93 Difference]: Finished difference Result 26915 states and 31730 transitions. [2024-10-14 00:03:12,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:03:12,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 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 398 [2024-10-14 00:03:12,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:12,840 INFO L225 Difference]: With dead ends: 26915 [2024-10-14 00:03:12,840 INFO L226 Difference]: Without dead ends: 15873 [2024-10-14 00:03:12,849 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 [2024-10-14 00:03:12,849 INFO L432 NwaCegarLoop]: 1116 mSDtfsCounter, 598 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:12,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 1122 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-14 00:03:12,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15873 states. [2024-10-14 00:03:13,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15873 to 15183. [2024-10-14 00:03:13,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15183 states, 15182 states have (on average 1.1580819391384534) internal successors, (17582), 15182 states have internal predecessors, (17582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:13,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15183 states to 15183 states and 17582 transitions. [2024-10-14 00:03:13,031 INFO L78 Accepts]: Start accepts. Automaton has 15183 states and 17582 transitions. Word has length 398 [2024-10-14 00:03:13,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:13,032 INFO L471 AbstractCegarLoop]: Abstraction has 15183 states and 17582 transitions. [2024-10-14 00:03:13,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:13,032 INFO L276 IsEmpty]: Start isEmpty. Operand 15183 states and 17582 transitions. [2024-10-14 00:03:13,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-10-14 00:03:13,035 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:13,036 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:03:13,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 00:03:13,036 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:13,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:13,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1732661299, now seen corresponding path program 1 times [2024-10-14 00:03:13,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:13,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507573631] [2024-10-14 00:03:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:13,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-14 00:03:13,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:13,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507573631] [2024-10-14 00:03:13,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507573631] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:13,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:03:13,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 00:03:13,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454255913] [2024-10-14 00:03:13,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:13,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:03:13,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:13,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:03:13,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:03:13,269 INFO L87 Difference]: Start difference. First operand 15183 states and 17582 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:14,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:14,854 INFO L93 Difference]: Finished difference Result 38645 states and 45557 transitions. [2024-10-14 00:03:14,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:03:14,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 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 403 [2024-10-14 00:03:14,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:14,885 INFO L225 Difference]: With dead ends: 38645 [2024-10-14 00:03:14,886 INFO L226 Difference]: Without dead ends: 24153 [2024-10-14 00:03:14,897 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 [2024-10-14 00:03:14,898 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 398 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 2338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:14,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 424 Invalid, 2338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-14 00:03:14,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24153 states. [2024-10-14 00:03:15,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24153 to 22773. [2024-10-14 00:03:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22773 states, 22772 states have (on average 1.1311259441419286) internal successors, (25758), 22772 states have internal predecessors, (25758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22773 states to 22773 states and 25758 transitions. [2024-10-14 00:03:15,104 INFO L78 Accepts]: Start accepts. Automaton has 22773 states and 25758 transitions. Word has length 403 [2024-10-14 00:03:15,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:15,105 INFO L471 AbstractCegarLoop]: Abstraction has 22773 states and 25758 transitions. [2024-10-14 00:03:15,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:15,105 INFO L276 IsEmpty]: Start isEmpty. Operand 22773 states and 25758 transitions. [2024-10-14 00:03:15,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-10-14 00:03:15,108 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:15,108 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:03:15,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 00:03:15,108 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:15,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:15,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1287053751, now seen corresponding path program 1 times [2024-10-14 00:03:15,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:15,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641897244] [2024-10-14 00:03:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:15,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-10-14 00:03:15,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:15,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641897244] [2024-10-14 00:03:15,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641897244] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:15,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:03:15,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:03:15,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428929867] [2024-10-14 00:03:15,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:15,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:03:15,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:15,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:03:15,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:03:15,302 INFO L87 Difference]: Start difference. First operand 22773 states and 25758 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:16,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:16,968 INFO L93 Difference]: Finished difference Result 54515 states and 62624 transitions. [2024-10-14 00:03:16,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:03:16,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 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 405 [2024-10-14 00:03:16,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:17,002 INFO L225 Difference]: With dead ends: 54515 [2024-10-14 00:03:17,003 INFO L226 Difference]: Without dead ends: 27603 [2024-10-14 00:03:17,022 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 [2024-10-14 00:03:17,023 INFO L432 NwaCegarLoop]: 1105 mSDtfsCounter, 701 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:17,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1111 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-14 00:03:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27603 states. [2024-10-14 00:03:17,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27603 to 24843. [2024-10-14 00:03:17,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24843 states, 24842 states have (on average 1.0793816922953063) internal successors, (26814), 24842 states have internal predecessors, (26814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24843 states to 24843 states and 26814 transitions. [2024-10-14 00:03:17,252 INFO L78 Accepts]: Start accepts. Automaton has 24843 states and 26814 transitions. Word has length 405 [2024-10-14 00:03:17,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:17,253 INFO L471 AbstractCegarLoop]: Abstraction has 24843 states and 26814 transitions. [2024-10-14 00:03:17,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:17,253 INFO L276 IsEmpty]: Start isEmpty. Operand 24843 states and 26814 transitions. [2024-10-14 00:03:17,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2024-10-14 00:03:17,262 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:17,263 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:03:17,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 00:03:17,263 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:17,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:17,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1695954036, now seen corresponding path program 1 times [2024-10-14 00:03:17,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:17,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786353333] [2024-10-14 00:03:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:17,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:18,312 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 144 proven. 296 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-14 00:03:18,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:18,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786353333] [2024-10-14 00:03:18,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786353333] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:03:18,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661541149] [2024-10-14 00:03:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:18,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:03:18,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:03:18,315 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) [2024-10-14 00:03:18,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 00:03:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:18,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 00:03:18,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:03:18,532 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2024-10-14 00:03:18,532 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:03:18,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661541149] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:18,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 00:03:18,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 00:03:18,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794302974] [2024-10-14 00:03:18,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:18,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:03:18,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:18,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:03:18,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 00:03:18,535 INFO L87 Difference]: Start difference. First operand 24843 states and 26814 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:19,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:19,985 INFO L93 Difference]: Finished difference Result 57275 states and 62563 transitions. [2024-10-14 00:03:19,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:03:19,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 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 591 [2024-10-14 00:03:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:20,019 INFO L225 Difference]: With dead ends: 57275 [2024-10-14 00:03:20,019 INFO L226 Difference]: Without dead ends: 33123 [2024-10-14 00:03:20,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 00:03:20,038 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 693 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 2033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:20,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 260 Invalid, 2033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 1751 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-14 00:03:20,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33123 states. [2024-10-14 00:03:20,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33123 to 29673. [2024-10-14 00:03:20,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29673 states, 29672 states have (on average 1.089950121326503) internal successors, (32341), 29672 states have internal predecessors, (32341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:20,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29673 states to 29673 states and 32341 transitions. [2024-10-14 00:03:20,323 INFO L78 Accepts]: Start accepts. Automaton has 29673 states and 32341 transitions. Word has length 591 [2024-10-14 00:03:20,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:20,324 INFO L471 AbstractCegarLoop]: Abstraction has 29673 states and 32341 transitions. [2024-10-14 00:03:20,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:20,324 INFO L276 IsEmpty]: Start isEmpty. Operand 29673 states and 32341 transitions. [2024-10-14 00:03:20,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2024-10-14 00:03:20,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:20,330 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:03:20,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 00:03:20,531 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,SelfDestructingSolverStorable9 [2024-10-14 00:03:20,531 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:20,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:20,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1885010035, now seen corresponding path program 1 times [2024-10-14 00:03:20,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:20,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443916743] [2024-10-14 00:03:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:20,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:21,225 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 190 proven. 293 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-14 00:03:21,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:21,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443916743] [2024-10-14 00:03:21,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443916743] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:03:21,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136943937] [2024-10-14 00:03:21,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:21,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:03:21,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:03:21,228 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) [2024-10-14 00:03:21,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 00:03:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:21,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 00:03:21,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:03:21,504 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2024-10-14 00:03:21,505 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:03:21,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136943937] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:21,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 00:03:21,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-14 00:03:21,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692400426] [2024-10-14 00:03:21,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:21,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:03:21,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:21,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:03:21,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 00:03:21,507 INFO L87 Difference]: Start difference. First operand 29673 states and 32341 transitions. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:22,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:22,797 INFO L93 Difference]: Finished difference Result 58655 states and 63988 transitions. [2024-10-14 00:03:22,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:03:22,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 601 [2024-10-14 00:03:22,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:22,825 INFO L225 Difference]: With dead ends: 58655 [2024-10-14 00:03:22,825 INFO L226 Difference]: Without dead ends: 29673 [2024-10-14 00:03:22,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 00:03:22,845 INFO L432 NwaCegarLoop]: 737 mSDtfsCounter, 669 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:22,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 743 Invalid, 1854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-14 00:03:22,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29673 states. [2024-10-14 00:03:23,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29673 to 28983. [2024-10-14 00:03:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28983 states, 28982 states have (on average 1.0784969981367745) internal successors, (31257), 28982 states have internal predecessors, (31257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28983 states to 28983 states and 31257 transitions. [2024-10-14 00:03:23,219 INFO L78 Accepts]: Start accepts. Automaton has 28983 states and 31257 transitions. Word has length 601 [2024-10-14 00:03:23,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:23,220 INFO L471 AbstractCegarLoop]: Abstraction has 28983 states and 31257 transitions. [2024-10-14 00:03:23,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:23,220 INFO L276 IsEmpty]: Start isEmpty. Operand 28983 states and 31257 transitions. [2024-10-14 00:03:23,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2024-10-14 00:03:23,228 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:23,229 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:03:23,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 00:03:23,429 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,SelfDestructingSolverStorable10 [2024-10-14 00:03:23,430 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:23,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash 503301090, now seen corresponding path program 1 times [2024-10-14 00:03:23,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:23,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816792439] [2024-10-14 00:03:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:23,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-10-14 00:03:23,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:23,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816792439] [2024-10-14 00:03:23,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816792439] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:23,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:03:23,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:03:23,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494419684] [2024-10-14 00:03:23,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:23,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:03:23,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:23,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:03:23,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:03:23,724 INFO L87 Difference]: Start difference. First operand 28983 states and 31257 transitions. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:25,147 INFO L93 Difference]: Finished difference Result 60035 states and 64678 transitions. [2024-10-14 00:03:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:03:25,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 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 666 [2024-10-14 00:03:25,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:25,175 INFO L225 Difference]: With dead ends: 60035 [2024-10-14 00:03:25,175 INFO L226 Difference]: Without dead ends: 28983 [2024-10-14 00:03:25,272 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 [2024-10-14 00:03:25,272 INFO L432 NwaCegarLoop]: 926 mSDtfsCounter, 520 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:25,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 931 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1657 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-14 00:03:25,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28983 states. [2024-10-14 00:03:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28983 to 28293. [2024-10-14 00:03:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28293 states, 28292 states have (on average 1.048741693765022) internal successors, (29671), 28292 states have internal predecessors, (29671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:25,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28293 states to 28293 states and 29671 transitions. [2024-10-14 00:03:25,552 INFO L78 Accepts]: Start accepts. Automaton has 28293 states and 29671 transitions. Word has length 666 [2024-10-14 00:03:25,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:25,553 INFO L471 AbstractCegarLoop]: Abstraction has 28293 states and 29671 transitions. [2024-10-14 00:03:25,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:25,553 INFO L276 IsEmpty]: Start isEmpty. Operand 28293 states and 29671 transitions. [2024-10-14 00:03:25,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2024-10-14 00:03:25,567 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:25,568 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:03:25,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 00:03:25,568 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:25,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:25,569 INFO L85 PathProgramCache]: Analyzing trace with hash -767044787, now seen corresponding path program 1 times [2024-10-14 00:03:25,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:25,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485445833] [2024-10-14 00:03:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:25,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:26,211 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 235 proven. 588 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-10-14 00:03:26,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:26,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485445833] [2024-10-14 00:03:26,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485445833] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:03:26,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614590211] [2024-10-14 00:03:26,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:26,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:03:26,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:03:26,215 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) [2024-10-14 00:03:26,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 00:03:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:26,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 00:03:26,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:03:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 459 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2024-10-14 00:03:26,590 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:03:26,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614590211] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:26,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 00:03:26,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-14 00:03:26,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844825703] [2024-10-14 00:03:26,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:26,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:03:26,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:26,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:03:26,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 00:03:26,594 INFO L87 Difference]: Start difference. First operand 28293 states and 29671 transitions. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:27,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:27,843 INFO L93 Difference]: Finished difference Result 62105 states and 65323 transitions. [2024-10-14 00:03:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:03:27,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 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 741 [2024-10-14 00:03:27,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:27,877 INFO L225 Difference]: With dead ends: 62105 [2024-10-14 00:03:27,877 INFO L226 Difference]: Without dead ends: 34503 [2024-10-14 00:03:27,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 00:03:27,897 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 504 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:27,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 941 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-14 00:03:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34503 states. [2024-10-14 00:03:28,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34503 to 32433. [2024-10-14 00:03:28,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32433 states, 32432 states have (on average 1.0452947705969413) internal successors, (33901), 32432 states have internal predecessors, (33901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:28,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32433 states to 32433 states and 33901 transitions. [2024-10-14 00:03:28,153 INFO L78 Accepts]: Start accepts. Automaton has 32433 states and 33901 transitions. Word has length 741 [2024-10-14 00:03:28,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:28,154 INFO L471 AbstractCegarLoop]: Abstraction has 32433 states and 33901 transitions. [2024-10-14 00:03:28,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:28,154 INFO L276 IsEmpty]: Start isEmpty. Operand 32433 states and 33901 transitions. [2024-10-14 00:03:28,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2024-10-14 00:03:28,166 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:28,167 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:03:28,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 00:03:28,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:03:28,371 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:28,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:28,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1126283624, now seen corresponding path program 1 times [2024-10-14 00:03:28,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:28,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70902954] [2024-10-14 00:03:28,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:28,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:28,818 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 702 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-10-14 00:03:28,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:28,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70902954] [2024-10-14 00:03:28,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70902954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:28,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:03:28,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:03:28,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753476506] [2024-10-14 00:03:28,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:28,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:03:28,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:28,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:03:28,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:03:28,820 INFO L87 Difference]: Start difference. First operand 32433 states and 33901 transitions. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:30,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:30,304 INFO L93 Difference]: Finished difference Result 81425 states and 85489 transitions. [2024-10-14 00:03:30,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:03:30,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 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 829 [2024-10-14 00:03:30,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:30,356 INFO L225 Difference]: With dead ends: 81425 [2024-10-14 00:03:30,356 INFO L226 Difference]: Without dead ends: 49683 [2024-10-14 00:03:30,381 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 [2024-10-14 00:03:30,382 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 623 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:30,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 188 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-14 00:03:30,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49683 states. [2024-10-14 00:03:30,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49683 to 48993. [2024-10-14 00:03:30,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48993 states, 48992 states have (on average 1.0427008491182235) internal successors, (51084), 48992 states have internal predecessors, (51084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:30,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48993 states to 48993 states and 51084 transitions. [2024-10-14 00:03:30,850 INFO L78 Accepts]: Start accepts. Automaton has 48993 states and 51084 transitions. Word has length 829 [2024-10-14 00:03:30,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:30,850 INFO L471 AbstractCegarLoop]: Abstraction has 48993 states and 51084 transitions. [2024-10-14 00:03:30,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:30,850 INFO L276 IsEmpty]: Start isEmpty. Operand 48993 states and 51084 transitions. [2024-10-14 00:03:30,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2024-10-14 00:03:30,869 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:30,869 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:03:30,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 00:03:30,869 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:30,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:30,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1722619518, now seen corresponding path program 1 times [2024-10-14 00:03:30,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:30,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047075650] [2024-10-14 00:03:30,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:30,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 981 proven. 2 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-10-14 00:03:32,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:32,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047075650] [2024-10-14 00:03:32,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047075650] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:03:32,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288200710] [2024-10-14 00:03:32,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:32,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:03:32,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:03:32,328 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) [2024-10-14 00:03:32,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 00:03:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:32,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 00:03:32,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:03:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 1192 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-10-14 00:03:32,936 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:03:32,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288200710] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:32,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 00:03:32,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-14 00:03:32,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923646880] [2024-10-14 00:03:32,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:32,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:03:32,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:32,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:03:32,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 00:03:32,938 INFO L87 Difference]: Start difference. First operand 48993 states and 51084 transitions. Second operand has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:34,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:34,505 INFO L93 Difference]: Finished difference Result 116615 states and 122101 transitions. [2024-10-14 00:03:34,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:03:34,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 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 936 [2024-10-14 00:03:34,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:34,580 INFO L225 Difference]: With dead ends: 116615 [2024-10-14 00:03:34,580 INFO L226 Difference]: Without dead ends: 68313 [2024-10-14 00:03:34,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 935 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 00:03:34,621 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 554 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:34,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 158 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-14 00:03:34,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68313 states. [2024-10-14 00:03:35,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68313 to 67623. [2024-10-14 00:03:35,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67623 states, 67622 states have (on average 1.0409334240335986) internal successors, (70390), 67622 states have internal predecessors, (70390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:35,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67623 states to 67623 states and 70390 transitions. [2024-10-14 00:03:35,414 INFO L78 Accepts]: Start accepts. Automaton has 67623 states and 70390 transitions. Word has length 936 [2024-10-14 00:03:35,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:35,415 INFO L471 AbstractCegarLoop]: Abstraction has 67623 states and 70390 transitions. [2024-10-14 00:03:35,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:35,415 INFO L276 IsEmpty]: Start isEmpty. Operand 67623 states and 70390 transitions. [2024-10-14 00:03:35,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 942 [2024-10-14 00:03:35,433 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:35,433 INFO L215 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:03:35,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 00:03:35,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 00:03:35,634 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:35,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:35,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1453630856, now seen corresponding path program 1 times [2024-10-14 00:03:35,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:35,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209096173] [2024-10-14 00:03:35,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:35,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 986 proven. 2 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2024-10-14 00:03:37,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:37,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209096173] [2024-10-14 00:03:37,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209096173] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:03:37,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400330619] [2024-10-14 00:03:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:37,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:03:37,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:03:37,038 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) [2024-10-14 00:03:37,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 00:03:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:37,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 00:03:37,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:03:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 652 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2024-10-14 00:03:37,426 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:03:37,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400330619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:37,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 00:03:37,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-14 00:03:37,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117496356] [2024-10-14 00:03:37,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:37,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:03:37,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:37,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:03:37,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 00:03:37,428 INFO L87 Difference]: Start difference. First operand 67623 states and 70390 transitions. Second operand has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:39,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:39,183 INFO L93 Difference]: Finished difference Result 133865 states and 139370 transitions. [2024-10-14 00:03:39,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:03:39,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 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 941 [2024-10-14 00:03:39,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:39,262 INFO L225 Difference]: With dead ends: 133865 [2024-10-14 00:03:39,262 INFO L226 Difference]: Without dead ends: 66933 [2024-10-14 00:03:39,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 940 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 00:03:39,297 INFO L432 NwaCegarLoop]: 881 mSDtfsCounter, 567 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:39,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 887 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1608 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-14 00:03:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66933 states. [2024-10-14 00:03:39,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66933 to 60723. [2024-10-14 00:03:39,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60723 states, 60722 states have (on average 1.027881163334541) internal successors, (62415), 60722 states have internal predecessors, (62415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:39,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60723 states to 60723 states and 62415 transitions. [2024-10-14 00:03:39,919 INFO L78 Accepts]: Start accepts. Automaton has 60723 states and 62415 transitions. Word has length 941 [2024-10-14 00:03:39,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:39,919 INFO L471 AbstractCegarLoop]: Abstraction has 60723 states and 62415 transitions. [2024-10-14 00:03:39,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:39,920 INFO L276 IsEmpty]: Start isEmpty. Operand 60723 states and 62415 transitions. [2024-10-14 00:03:39,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2024-10-14 00:03:39,936 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:39,936 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-14 00:03:39,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 00:03:40,137 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,SelfDestructingSolverStorable15 [2024-10-14 00:03:40,138 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:40,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:40,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1378743456, now seen corresponding path program 1 times [2024-10-14 00:03:40,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:40,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082058252] [2024-10-14 00:03:40,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:40,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1493 backedges. 1248 proven. 107 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-10-14 00:03:41,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:41,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082058252] [2024-10-14 00:03:41,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082058252] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:03:41,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792354755] [2024-10-14 00:03:41,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:41,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:03:41,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:03:41,412 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) [2024-10-14 00:03:41,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 00:03:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:41,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 00:03:41,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:03:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1493 backedges. 684 proven. 0 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2024-10-14 00:03:42,021 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:03:42,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792354755] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:42,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 00:03:42,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-14 00:03:42,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589620318] [2024-10-14 00:03:42,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:42,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:03:42,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:42,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:03:42,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 00:03:42,024 INFO L87 Difference]: Start difference. First operand 60723 states and 62415 transitions. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 2 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:43,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:43,811 INFO L93 Difference]: Finished difference Result 130415 states and 134035 transitions. [2024-10-14 00:03:43,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:03:43,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 2 states have internal predecessors, (552), 0 states have call successors, (0), 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 989 [2024-10-14 00:03:43,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:43,883 INFO L225 Difference]: With dead ends: 130415 [2024-10-14 00:03:43,883 INFO L226 Difference]: Without dead ends: 70383 [2024-10-14 00:03:43,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 989 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 00:03:43,925 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 404 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:43,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 193 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1788 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-14 00:03:43,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70383 states. [2024-10-14 00:03:44,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70383 to 69693. [2024-10-14 00:03:44,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69693 states, 69692 states have (on average 1.021881995063996) internal successors, (71217), 69692 states have internal predecessors, (71217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:44,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69693 states to 69693 states and 71217 transitions. [2024-10-14 00:03:44,947 INFO L78 Accepts]: Start accepts. Automaton has 69693 states and 71217 transitions. Word has length 989 [2024-10-14 00:03:44,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:44,948 INFO L471 AbstractCegarLoop]: Abstraction has 69693 states and 71217 transitions. [2024-10-14 00:03:44,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 2 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:44,948 INFO L276 IsEmpty]: Start isEmpty. Operand 69693 states and 71217 transitions. [2024-10-14 00:03:44,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1505 [2024-10-14 00:03:44,969 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:44,969 INFO L215 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:03:44,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 00:03:45,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 00:03:45,170 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:45,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:45,171 INFO L85 PathProgramCache]: Analyzing trace with hash -935457769, now seen corresponding path program 1 times [2024-10-14 00:03:45,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:45,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075467827] [2024-10-14 00:03:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:45,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2480 backedges. 1798 proven. 107 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2024-10-14 00:03:46,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:46,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075467827] [2024-10-14 00:03:46,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075467827] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:03:46,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842230243] [2024-10-14 00:03:46,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:46,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:03:46,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:03:46,611 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 00:03:46,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 00:03:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:46,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 00:03:46,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:03:47,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2480 backedges. 1580 proven. 0 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2024-10-14 00:03:47,183 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:03:47,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842230243] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:47,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 00:03:47,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-14 00:03:47,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103116921] [2024-10-14 00:03:47,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:47,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:03:47,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:47,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:03:47,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 00:03:47,186 INFO L87 Difference]: Start difference. First operand 69693 states and 71217 transitions. Second operand has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:48,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:48,946 INFO L93 Difference]: Finished difference Result 140075 states and 143138 transitions. [2024-10-14 00:03:48,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:03:48,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 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 1504 [2024-10-14 00:03:48,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:49,035 INFO L225 Difference]: With dead ends: 140075 [2024-10-14 00:03:49,035 INFO L226 Difference]: Without dead ends: 71073 [2024-10-14 00:03:49,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1508 GetRequests, 1504 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 00:03:49,067 INFO L432 NwaCegarLoop]: 889 mSDtfsCounter, 454 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:49,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 895 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-14 00:03:49,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71073 states. [2024-10-14 00:03:49,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71073 to 69693. [2024-10-14 00:03:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69693 states, 69692 states have (on average 1.0195287837915399) internal successors, (71053), 69692 states have internal predecessors, (71053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69693 states to 69693 states and 71053 transitions. [2024-10-14 00:03:49,814 INFO L78 Accepts]: Start accepts. Automaton has 69693 states and 71053 transitions. Word has length 1504 [2024-10-14 00:03:49,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:49,815 INFO L471 AbstractCegarLoop]: Abstraction has 69693 states and 71053 transitions. [2024-10-14 00:03:49,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:49,815 INFO L276 IsEmpty]: Start isEmpty. Operand 69693 states and 71053 transitions. [2024-10-14 00:03:49,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1515 [2024-10-14 00:03:49,834 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:49,834 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:03:49,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 00:03:50,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:03:50,035 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:50,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:50,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1402580706, now seen corresponding path program 1 times [2024-10-14 00:03:50,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:50,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180367638] [2024-10-14 00:03:50,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:50,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2053 backedges. 1549 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-10-14 00:03:52,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:52,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180367638] [2024-10-14 00:03:52,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180367638] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:03:52,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:03:52,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:03:52,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601809619] [2024-10-14 00:03:52,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:52,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 00:03:52,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:52,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 00:03:52,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 00:03:52,023 INFO L87 Difference]: Start difference. First operand 69693 states and 71053 transitions. Second operand has 4 states, 4 states have (on average 254.5) internal successors, (1018), 3 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:54,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:03:54,241 INFO L93 Difference]: Finished difference Result 139385 states and 142108 transitions. [2024-10-14 00:03:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 00:03:54,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 254.5) internal successors, (1018), 3 states have internal predecessors, (1018), 0 states have call successors, (0), 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 1514 [2024-10-14 00:03:54,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:03:54,325 INFO L225 Difference]: With dead ends: 139385 [2024-10-14 00:03:54,325 INFO L226 Difference]: Without dead ends: 70383 [2024-10-14 00:03:54,362 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 [2024-10-14 00:03:54,363 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 938 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 2504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-14 00:03:54,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 260 Invalid, 2504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-14 00:03:54,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70383 states. [2024-10-14 00:03:55,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70383 to 70383. [2024-10-14 00:03:55,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70383 states, 70382 states have (on average 1.0193799551021567) internal successors, (71746), 70382 states have internal predecessors, (71746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:55,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70383 states to 70383 states and 71746 transitions. [2024-10-14 00:03:55,204 INFO L78 Accepts]: Start accepts. Automaton has 70383 states and 71746 transitions. Word has length 1514 [2024-10-14 00:03:55,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:03:55,205 INFO L471 AbstractCegarLoop]: Abstraction has 70383 states and 71746 transitions. [2024-10-14 00:03:55,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 254.5) internal successors, (1018), 3 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:03:55,205 INFO L276 IsEmpty]: Start isEmpty. Operand 70383 states and 71746 transitions. [2024-10-14 00:03:55,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1614 [2024-10-14 00:03:55,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:03:55,236 INFO L215 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:03:55,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 00:03:55,237 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:03:55,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:03:55,237 INFO L85 PathProgramCache]: Analyzing trace with hash -279941334, now seen corresponding path program 1 times [2024-10-14 00:03:55,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:03:55,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591480068] [2024-10-14 00:03:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:55,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:03:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 1958 proven. 107 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2024-10-14 00:03:57,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:03:57,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591480068] [2024-10-14 00:03:57,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591480068] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:03:57,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569812546] [2024-10-14 00:03:57,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:03:57,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:03:57,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:03:57,334 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 00:03:57,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 00:03:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:03:57,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 00:03:57,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:03:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 1851 proven. 214 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2024-10-14 00:03:58,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 00:03:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 2065 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2024-10-14 00:03:59,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569812546] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 00:03:59,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 00:03:59,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2024-10-14 00:03:59,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93256715] [2024-10-14 00:03:59,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:03:59,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 00:03:59,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:03:59,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 00:03:59,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=47, Unknown=0, NotChecked=0, Total=90 [2024-10-14 00:03:59,615 INFO L87 Difference]: Start difference. First operand 70383 states and 71746 transitions. Second operand has 5 states, 5 states have (on average 235.6) internal successors, (1178), 5 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:04:01,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:04:01,846 INFO L93 Difference]: Finished difference Result 151805 states and 154761 transitions. [2024-10-14 00:04:01,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 00:04:01,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 235.6) internal successors, (1178), 5 states have internal predecessors, (1178), 0 states have call successors, (0), 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 1613 [2024-10-14 00:04:01,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:04:01,946 INFO L225 Difference]: With dead ends: 151805 [2024-10-14 00:04:01,947 INFO L226 Difference]: Without dead ends: 81423 [2024-10-14 00:04:01,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3229 GetRequests, 3221 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=47, Unknown=0, NotChecked=0, Total=90 [2024-10-14 00:04:01,961 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 1243 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-14 00:04:01,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 12 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-14 00:04:02,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81423 states. [2024-10-14 00:04:02,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81423 to 71763. [2024-10-14 00:04:02,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71763 states, 71762 states have (on average 1.0193974526908391) internal successors, (73154), 71762 states have internal predecessors, (73154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:04:02,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71763 states to 71763 states and 73154 transitions. [2024-10-14 00:04:02,939 INFO L78 Accepts]: Start accepts. Automaton has 71763 states and 73154 transitions. Word has length 1613 [2024-10-14 00:04:02,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:04:02,941 INFO L471 AbstractCegarLoop]: Abstraction has 71763 states and 73154 transitions. [2024-10-14 00:04:02,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 235.6) internal successors, (1178), 5 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:04:02,942 INFO L276 IsEmpty]: Start isEmpty. Operand 71763 states and 73154 transitions. [2024-10-14 00:04:02,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1647 [2024-10-14 00:04:02,968 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:04:02,968 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:04:02,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-14 00:04:03,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:04:03,170 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:04:03,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:04:03,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1602548581, now seen corresponding path program 1 times [2024-10-14 00:04:03,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:04:03,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511179459] [2024-10-14 00:04:03,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:04:03,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:04:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:04:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2717 backedges. 1936 proven. 581 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-10-14 00:04:06,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:04:06,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511179459] [2024-10-14 00:04:06,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511179459] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 00:04:06,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251448005] [2024-10-14 00:04:06,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:04:06,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 00:04:06,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:04:06,130 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 00:04:06,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 00:04:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:04:06,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 00:04:06,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:04:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2717 backedges. 1942 proven. 0 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2024-10-14 00:04:07,537 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:04:07,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251448005] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:04:07,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 00:04:07,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-10-14 00:04:07,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933247703] [2024-10-14 00:04:07,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:04:07,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 00:04:07,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:04:07,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 00:04:07,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-14 00:04:07,541 INFO L87 Difference]: Start difference. First operand 71763 states and 73154 transitions. Second operand has 4 states, 4 states have (on average 254.5) internal successors, (1018), 3 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:04:10,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:04:10,069 INFO L93 Difference]: Finished difference Result 155255 states and 158400 transitions. [2024-10-14 00:04:10,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 00:04:10,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 254.5) internal successors, (1018), 3 states have internal predecessors, (1018), 0 states have call successors, (0), 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 1646 [2024-10-14 00:04:10,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:04:10,162 INFO L225 Difference]: With dead ends: 155255 [2024-10-14 00:04:10,162 INFO L226 Difference]: Without dead ends: 84183 [2024-10-14 00:04:10,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1653 GetRequests, 1644 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-14 00:04:10,188 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 999 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2597 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 3114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 2597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-14 00:04:10,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 62 Invalid, 3114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 2597 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-14 00:04:10,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84183 states. [2024-10-14 00:04:10,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84183 to 77973.