./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/Problem14_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label51.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 b9188b0bb7d345bde8858a6e4085c80a345a783efac7d50b39494fde4a7e156f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:18:27,083 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:18:27,148 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:18:27,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:18:27,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:18:27,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:18:27,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:18:27,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:18:27,184 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:18:27,184 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:18:27,185 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:18:27,185 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:18:27,186 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:18:27,186 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:18:27,186 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:18:27,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:18:27,187 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:18:27,188 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:18:27,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:18:27,188 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:18:27,189 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:18:27,189 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:18:27,190 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:18:27,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:18:27,190 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:18:27,190 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:18:27,191 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:18:27,191 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:18:27,192 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:18:27,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:18:27,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:18:27,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:18:27,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:18:27,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:18:27,194 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:18:27,194 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:18:27,194 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:18:27,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:18:27,195 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:18:27,195 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:18:27,195 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:18:27,196 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:18:27,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9188b0bb7d345bde8858a6e4085c80a345a783efac7d50b39494fde4a7e156f [2024-10-23 21:18:27,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:18:27,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:18:27,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:18:27,469 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:18:27,470 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:18:27,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label51.c [2024-10-23 21:18:28,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:18:29,204 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:18:29,204 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label51.c [2024-10-23 21:18:29,222 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/828a59363/0f7c66c1f98e4f99b97f303cd73d89bc/FLAGef8f3ecc4 [2024-10-23 21:18:29,238 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/828a59363/0f7c66c1f98e4f99b97f303cd73d89bc [2024-10-23 21:18:29,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:18:29,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:18:29,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:18:29,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:18:29,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:18:29,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:18:29" (1/1) ... [2024-10-23 21:18:29,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f8beb7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:29, skipping insertion in model container [2024-10-23 21:18:29,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:18:29" (1/1) ... [2024-10-23 21:18:29,306 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:18:29,567 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/Problem14_label51.c[3722,3735] [2024-10-23 21:18:29,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:18:29,757 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:18:29,779 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/Problem14_label51.c[3722,3735] [2024-10-23 21:18:29,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:18:29,886 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:18:29,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:29 WrapperNode [2024-10-23 21:18:29,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:18:29,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:18:29,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:18:29,890 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:18:29,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:29" (1/1) ... [2024-10-23 21:18:29,916 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:29" (1/1) ... [2024-10-23 21:18:29,993 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 859 [2024-10-23 21:18:29,994 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:18:29,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:18:29,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:18:29,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:18:30,011 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:29" (1/1) ... [2024-10-23 21:18:30,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:29" (1/1) ... [2024-10-23 21:18:30,024 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:29" (1/1) ... [2024-10-23 21:18:30,064 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-23 21:18:30,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:29" (1/1) ... [2024-10-23 21:18:30,069 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:29" (1/1) ... [2024-10-23 21:18:30,087 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:29" (1/1) ... [2024-10-23 21:18:30,094 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:29" (1/1) ... [2024-10-23 21:18:30,099 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:29" (1/1) ... [2024-10-23 21:18:30,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:29" (1/1) ... [2024-10-23 21:18:30,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:18:30,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:18:30,117 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:18:30,117 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:18:30,118 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:29" (1/1) ... [2024-10-23 21:18:30,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:18:30,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:18:30,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 21:18:30,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 21:18:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:18:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:18:30,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:18:30,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:18:30,276 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:18:30,278 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:18:31,588 INFO L? ?]: Removed 123 outVars from TransFormulas that were not future-live. [2024-10-23 21:18:31,589 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:18:31,659 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:18:31,660 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:18:31,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:18:31 BoogieIcfgContainer [2024-10-23 21:18:31,660 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:18:31,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:18:31,664 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:18:31,667 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:18:31,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:18:29" (1/3) ... [2024-10-23 21:18:31,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5411fb69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:18:31, skipping insertion in model container [2024-10-23 21:18:31,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:29" (2/3) ... [2024-10-23 21:18:31,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5411fb69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:18:31, skipping insertion in model container [2024-10-23 21:18:31,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:18:31" (3/3) ... [2024-10-23 21:18:31,671 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label51.c [2024-10-23 21:18:31,685 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:18:31,685 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:18:31,747 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:18:31,753 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;@3e69f9ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:18:31,754 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:18:31,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:31,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-23 21:18:31,767 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:31,768 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:31,769 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:31,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash 541512402, now seen corresponding path program 1 times [2024-10-23 21:18:31,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:31,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394807121] [2024-10-23 21:18:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:31,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:18:31,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:31,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394807121] [2024-10-23 21:18:31,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394807121] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:31,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:31,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:18:31,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891973407] [2024-10-23 21:18:31,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:31,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:18:31,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:31,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:18:31,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:18:31,978 INFO L87 Difference]: Start difference. First operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:32,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:32,030 INFO L93 Difference]: Finished difference Result 365 states and 719 transitions. [2024-10-23 21:18:32,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:18:32,034 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-10-23 21:18:32,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:32,045 INFO L225 Difference]: With dead ends: 365 [2024-10-23 21:18:32,045 INFO L226 Difference]: Without dead ends: 181 [2024-10-23 21:18:32,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:18:32,055 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:32,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 295 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:18:32,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-10-23 21:18:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-10-23 21:18:32,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.6388888888888888) internal successors, (295), 180 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:32,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 295 transitions. [2024-10-23 21:18:32,099 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 295 transitions. Word has length 34 [2024-10-23 21:18:32,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:32,099 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 295 transitions. [2024-10-23 21:18:32,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:32,100 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 295 transitions. [2024-10-23 21:18:32,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-23 21:18:32,101 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:32,101 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:32,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:18:32,102 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:32,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:32,103 INFO L85 PathProgramCache]: Analyzing trace with hash -691742643, now seen corresponding path program 1 times [2024-10-23 21:18:32,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:32,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753708657] [2024-10-23 21:18:32,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:32,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:18:32,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:32,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753708657] [2024-10-23 21:18:32,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753708657] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:32,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:32,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:18:32,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491563193] [2024-10-23 21:18:32,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:32,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:18:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:18:32,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:18:32,261 INFO L87 Difference]: Start difference. First operand 181 states and 295 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:33,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:33,104 INFO L93 Difference]: Finished difference Result 539 states and 882 transitions. [2024-10-23 21:18:33,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:18:33,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-10-23 21:18:33,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:33,108 INFO L225 Difference]: With dead ends: 539 [2024-10-23 21:18:33,108 INFO L226 Difference]: Without dead ends: 359 [2024-10-23 21:18:33,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:18:33,112 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 164 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:33,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 87 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:18:33,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-10-23 21:18:33,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2024-10-23 21:18:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.4217877094972067) internal successors, (509), 358 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:33,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 509 transitions. [2024-10-23 21:18:33,137 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 509 transitions. Word has length 34 [2024-10-23 21:18:33,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:33,141 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 509 transitions. [2024-10-23 21:18:33,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:33,142 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 509 transitions. [2024-10-23 21:18:33,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-23 21:18:33,145 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:33,145 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:33,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:18:33,147 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:33,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:33,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1007349763, now seen corresponding path program 1 times [2024-10-23 21:18:33,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:33,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018119826] [2024-10-23 21:18:33,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:33,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:18:33,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:33,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018119826] [2024-10-23 21:18:33,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018119826] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:33,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:33,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:18:33,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337102761] [2024-10-23 21:18:33,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:33,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:18:33,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:33,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:18:33,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:18:33,682 INFO L87 Difference]: Start difference. First operand 359 states and 509 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:34,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:34,608 INFO L93 Difference]: Finished difference Result 1073 states and 1445 transitions. [2024-10-23 21:18:34,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:18:34,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2024-10-23 21:18:34,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:34,615 INFO L225 Difference]: With dead ends: 1073 [2024-10-23 21:18:34,615 INFO L226 Difference]: Without dead ends: 715 [2024-10-23 21:18:34,618 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 [2024-10-23 21:18:34,619 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 418 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:34,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 119 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:18:34,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-10-23 21:18:34,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2024-10-23 21:18:34,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 1.2619047619047619) internal successors, (901), 714 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:34,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 901 transitions. [2024-10-23 21:18:34,660 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 901 transitions. Word has length 113 [2024-10-23 21:18:34,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:34,661 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 901 transitions. [2024-10-23 21:18:34,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:34,661 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 901 transitions. [2024-10-23 21:18:34,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-10-23 21:18:34,664 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:34,664 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:34,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:18:34,664 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:34,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:34,665 INFO L85 PathProgramCache]: Analyzing trace with hash 498573092, now seen corresponding path program 1 times [2024-10-23 21:18:34,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:34,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199391152] [2024-10-23 21:18:34,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:34,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-23 21:18:34,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:34,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199391152] [2024-10-23 21:18:34,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199391152] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:18:34,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950153344] [2024-10-23 21:18:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:34,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:18:34,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:18:34,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:18:34,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:18:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:35,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:18:35,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:18:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-23 21:18:35,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:18:35,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950153344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:35,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:18:35,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-23 21:18:35,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343394649] [2024-10-23 21:18:35,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:35,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:18:35,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:35,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:18:35,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:18:35,293 INFO L87 Difference]: Start difference. First operand 715 states and 901 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:35,907 INFO L93 Difference]: Finished difference Result 1251 states and 1611 transitions. [2024-10-23 21:18:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:18:35,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 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 139 [2024-10-23 21:18:35,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:35,912 INFO L225 Difference]: With dead ends: 1251 [2024-10-23 21:18:35,915 INFO L226 Difference]: Without dead ends: 1249 [2024-10-23 21:18:35,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:18:35,918 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 91 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:35,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 34 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 21:18:35,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2024-10-23 21:18:35,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 893. [2024-10-23 21:18:35,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 892 states have (on average 1.3374439461883407) internal successors, (1193), 892 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:35,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1193 transitions. [2024-10-23 21:18:35,944 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1193 transitions. Word has length 139 [2024-10-23 21:18:35,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:35,945 INFO L471 AbstractCegarLoop]: Abstraction has 893 states and 1193 transitions. [2024-10-23 21:18:35,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:35,945 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1193 transitions. [2024-10-23 21:18:35,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-10-23 21:18:35,949 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:35,949 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:18:35,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:18:36,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:18:36,157 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:36,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:36,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1879662704, now seen corresponding path program 1 times [2024-10-23 21:18:36,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:36,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254822619] [2024-10-23 21:18:36,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:36,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 21:18:36,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:36,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254822619] [2024-10-23 21:18:36,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254822619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:36,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:36,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:18:36,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364967036] [2024-10-23 21:18:36,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:36,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:18:36,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:36,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:18:36,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:18:36,435 INFO L87 Difference]: Start difference. First operand 893 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:37,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:37,151 INFO L93 Difference]: Finished difference Result 1992 states and 2628 transitions. [2024-10-23 21:18:37,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:18:37,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 193 [2024-10-23 21:18:37,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:37,157 INFO L225 Difference]: With dead ends: 1992 [2024-10-23 21:18:37,157 INFO L226 Difference]: Without dead ends: 1071 [2024-10-23 21:18:37,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:18:37,161 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 116 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:37,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 116 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:18:37,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2024-10-23 21:18:37,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1071. [2024-10-23 21:18:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 1.1803738317757009) internal successors, (1263), 1070 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:37,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1263 transitions. [2024-10-23 21:18:37,184 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1263 transitions. Word has length 193 [2024-10-23 21:18:37,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:37,185 INFO L471 AbstractCegarLoop]: Abstraction has 1071 states and 1263 transitions. [2024-10-23 21:18:37,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:37,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1263 transitions. [2024-10-23 21:18:37,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-10-23 21:18:37,188 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:37,191 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:18:37,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:18:37,191 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:37,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash -233496812, now seen corresponding path program 1 times [2024-10-23 21:18:37,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:37,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745910694] [2024-10-23 21:18:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 65 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:18:37,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:37,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745910694] [2024-10-23 21:18:37,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745910694] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:18:37,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159117427] [2024-10-23 21:18:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:37,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:18:37,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:18:37,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:18:37,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:18:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:37,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:18:37,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:18:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-23 21:18:37,863 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:18:37,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159117427] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:37,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:18:37,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-23 21:18:37,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099851139] [2024-10-23 21:18:37,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:37,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:18:37,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:37,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:18:37,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:18:37,865 INFO L87 Difference]: Start difference. First operand 1071 states and 1263 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:38,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:38,439 INFO L93 Difference]: Finished difference Result 2319 states and 2778 transitions. [2024-10-23 21:18:38,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:18:38,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 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 205 [2024-10-23 21:18:38,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:38,445 INFO L225 Difference]: With dead ends: 2319 [2024-10-23 21:18:38,445 INFO L226 Difference]: Without dead ends: 1249 [2024-10-23 21:18:38,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:18:38,447 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 84 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:38,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 45 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:18:38,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2024-10-23 21:18:38,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1071. [2024-10-23 21:18:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 1.1672897196261682) internal successors, (1249), 1070 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:38,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1249 transitions. [2024-10-23 21:18:38,466 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1249 transitions. Word has length 205 [2024-10-23 21:18:38,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:38,466 INFO L471 AbstractCegarLoop]: Abstraction has 1071 states and 1249 transitions. [2024-10-23 21:18:38,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:38,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1249 transitions. [2024-10-23 21:18:38,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-10-23 21:18:38,468 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:38,469 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:18:38,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-23 21:18:38,669 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,SelfDestructingSolverStorable5 [2024-10-23 21:18:38,672 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:38,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:38,673 INFO L85 PathProgramCache]: Analyzing trace with hash -588107885, now seen corresponding path program 1 times [2024-10-23 21:18:38,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:38,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831637181] [2024-10-23 21:18:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:38,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:18:38,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:38,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831637181] [2024-10-23 21:18:38,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831637181] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:38,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:38,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:18:38,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437384616] [2024-10-23 21:18:38,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:38,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:18:38,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:38,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:18:38,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:18:38,966 INFO L87 Difference]: Start difference. First operand 1071 states and 1249 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:39,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:39,516 INFO L93 Difference]: Finished difference Result 2853 states and 3361 transitions. [2024-10-23 21:18:39,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:18:39,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 208 [2024-10-23 21:18:39,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:39,523 INFO L225 Difference]: With dead ends: 2853 [2024-10-23 21:18:39,523 INFO L226 Difference]: Without dead ends: 1783 [2024-10-23 21:18:39,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:18:39,526 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 110 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:39,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 75 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:18:39,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2024-10-23 21:18:39,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1605. [2024-10-23 21:18:39,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1604 states have (on average 1.1365336658354115) internal successors, (1823), 1604 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1823 transitions. [2024-10-23 21:18:39,555 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1823 transitions. Word has length 208 [2024-10-23 21:18:39,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:39,555 INFO L471 AbstractCegarLoop]: Abstraction has 1605 states and 1823 transitions. [2024-10-23 21:18:39,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:39,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1823 transitions. [2024-10-23 21:18:39,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-10-23 21:18:39,559 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:39,559 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:39,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:18:39,560 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:39,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:39,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1583549789, now seen corresponding path program 1 times [2024-10-23 21:18:39,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:39,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849062524] [2024-10-23 21:18:39,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:39,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2024-10-23 21:18:39,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:39,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849062524] [2024-10-23 21:18:39,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849062524] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:39,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:39,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:18:39,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721126564] [2024-10-23 21:18:39,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:39,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:18:39,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:39,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:18:39,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:18:39,981 INFO L87 Difference]: Start difference. First operand 1605 states and 1823 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:40,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:40,612 INFO L93 Difference]: Finished difference Result 3267 states and 3726 transitions. [2024-10-23 21:18:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:18:40,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 325 [2024-10-23 21:18:40,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:40,618 INFO L225 Difference]: With dead ends: 3267 [2024-10-23 21:18:40,619 INFO L226 Difference]: Without dead ends: 1783 [2024-10-23 21:18:40,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:18:40,621 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 124 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:40,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 14 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 21:18:40,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2024-10-23 21:18:40,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1605. [2024-10-23 21:18:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1604 states have (on average 1.0910224438902743) internal successors, (1750), 1604 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:40,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1750 transitions. [2024-10-23 21:18:40,647 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1750 transitions. Word has length 325 [2024-10-23 21:18:40,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:40,647 INFO L471 AbstractCegarLoop]: Abstraction has 1605 states and 1750 transitions. [2024-10-23 21:18:40,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:40,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1750 transitions. [2024-10-23 21:18:40,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-10-23 21:18:40,653 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:40,653 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1] [2024-10-23 21:18:40,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:18:40,653 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:40,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:40,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1147790125, now seen corresponding path program 1 times [2024-10-23 21:18:40,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:40,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745360188] [2024-10-23 21:18:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:40,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-10-23 21:18:41,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:41,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745360188] [2024-10-23 21:18:41,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745360188] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:41,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:41,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:18:41,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768187691] [2024-10-23 21:18:41,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:41,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:18:41,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:18:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:18:41,114 INFO L87 Difference]: Start difference. First operand 1605 states and 1750 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:41,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:41,624 INFO L93 Difference]: Finished difference Result 3921 states and 4308 transitions. [2024-10-23 21:18:41,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:18:41,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 420 [2024-10-23 21:18:41,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:41,632 INFO L225 Difference]: With dead ends: 3921 [2024-10-23 21:18:41,633 INFO L226 Difference]: Without dead ends: 2495 [2024-10-23 21:18:41,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:18:41,635 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 110 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:41,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 242 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:18:41,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2024-10-23 21:18:41,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1961. [2024-10-23 21:18:41,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1960 states have (on average 1.0760204081632654) internal successors, (2109), 1960 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2109 transitions. [2024-10-23 21:18:41,675 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2109 transitions. Word has length 420 [2024-10-23 21:18:41,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:41,676 INFO L471 AbstractCegarLoop]: Abstraction has 1961 states and 2109 transitions. [2024-10-23 21:18:41,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:41,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2109 transitions. [2024-10-23 21:18:41,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-10-23 21:18:41,682 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:41,682 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:41,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:18:41,682 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:41,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:41,683 INFO L85 PathProgramCache]: Analyzing trace with hash 141124226, now seen corresponding path program 1 times [2024-10-23 21:18:41,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:41,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147178681] [2024-10-23 21:18:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:41,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:42,071 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-10-23 21:18:42,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:42,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147178681] [2024-10-23 21:18:42,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147178681] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:42,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:42,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:18:42,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611093442] [2024-10-23 21:18:42,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:42,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:18:42,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:42,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:18:42,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:18:42,074 INFO L87 Difference]: Start difference. First operand 1961 states and 2109 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:42,644 INFO L93 Difference]: Finished difference Result 4455 states and 4860 transitions. [2024-10-23 21:18:42,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:18:42,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 427 [2024-10-23 21:18:42,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:42,654 INFO L225 Difference]: With dead ends: 4455 [2024-10-23 21:18:42,654 INFO L226 Difference]: Without dead ends: 2673 [2024-10-23 21:18:42,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:18:42,657 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 113 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:42,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 199 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:18:42,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2673 states. [2024-10-23 21:18:42,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2673 to 2673. [2024-10-23 21:18:42,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2673 states, 2672 states have (on average 1.0819610778443114) internal successors, (2891), 2672 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:42,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2673 states to 2673 states and 2891 transitions. [2024-10-23 21:18:42,717 INFO L78 Accepts]: Start accepts. Automaton has 2673 states and 2891 transitions. Word has length 427 [2024-10-23 21:18:42,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:42,719 INFO L471 AbstractCegarLoop]: Abstraction has 2673 states and 2891 transitions. [2024-10-23 21:18:42,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:42,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2673 states and 2891 transitions. [2024-10-23 21:18:42,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-10-23 21:18:42,728 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:42,728 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:42,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:18:42,728 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:42,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:42,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1113096845, now seen corresponding path program 1 times [2024-10-23 21:18:42,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:42,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298123509] [2024-10-23 21:18:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:42,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:42,990 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-10-23 21:18:42,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:42,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298123509] [2024-10-23 21:18:42,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298123509] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:42,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:42,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:18:42,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509453445] [2024-10-23 21:18:42,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:42,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:18:42,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:42,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:18:42,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:18:42,993 INFO L87 Difference]: Start difference. First operand 2673 states and 2891 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:43,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:43,545 INFO L93 Difference]: Finished difference Result 6413 states and 7026 transitions. [2024-10-23 21:18:43,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:18:43,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 468 [2024-10-23 21:18:43,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:43,557 INFO L225 Difference]: With dead ends: 6413 [2024-10-23 21:18:43,558 INFO L226 Difference]: Without dead ends: 3919 [2024-10-23 21:18:43,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:18:43,562 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 71 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:43,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 50 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:18:43,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2024-10-23 21:18:43,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 3563. [2024-10-23 21:18:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3563 states, 3562 states have (on average 1.0777653003930376) internal successors, (3839), 3562 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:43,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 3839 transitions. [2024-10-23 21:18:43,624 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 3839 transitions. Word has length 468 [2024-10-23 21:18:43,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:43,624 INFO L471 AbstractCegarLoop]: Abstraction has 3563 states and 3839 transitions. [2024-10-23 21:18:43,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:43,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 3839 transitions. [2024-10-23 21:18:43,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2024-10-23 21:18:43,636 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:43,637 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:43,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:18:43,638 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:43,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:43,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1563513047, now seen corresponding path program 1 times [2024-10-23 21:18:43,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:43,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098952984] [2024-10-23 21:18:43,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:43,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1034 proven. 104 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-10-23 21:18:44,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:44,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098952984] [2024-10-23 21:18:44,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098952984] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:18:44,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005478144] [2024-10-23 21:18:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:44,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:18:44,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:18:44,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:18:44,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 21:18:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:44,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:18:44,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:18:44,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 1288 trivial. 0 not checked. [2024-10-23 21:18:44,786 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:18:44,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005478144] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:44,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:18:44,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:18:44,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550192687] [2024-10-23 21:18:44,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:44,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:18:44,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:44,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:18:44,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:18:44,789 INFO L87 Difference]: Start difference. First operand 3563 states and 3839 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:45,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:45,272 INFO L93 Difference]: Finished difference Result 7659 states and 8268 transitions. [2024-10-23 21:18:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:18:45,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 613 [2024-10-23 21:18:45,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:45,286 INFO L225 Difference]: With dead ends: 7659 [2024-10-23 21:18:45,286 INFO L226 Difference]: Without dead ends: 3563 [2024-10-23 21:18:45,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:18:45,292 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 146 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:45,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 244 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 21:18:45,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2024-10-23 21:18:45,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 3207. [2024-10-23 21:18:45,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3207 states, 3206 states have (on average 1.0723643169058017) internal successors, (3438), 3206 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 3438 transitions. [2024-10-23 21:18:45,390 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 3438 transitions. Word has length 613 [2024-10-23 21:18:45,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:45,391 INFO L471 AbstractCegarLoop]: Abstraction has 3207 states and 3438 transitions. [2024-10-23 21:18:45,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:45,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 3438 transitions. [2024-10-23 21:18:45,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2024-10-23 21:18:45,400 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:45,400 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:45,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 21:18:45,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:18:45,602 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:45,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:45,602 INFO L85 PathProgramCache]: Analyzing trace with hash 407756487, now seen corresponding path program 1 times [2024-10-23 21:18:45,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:45,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367249790] [2024-10-23 21:18:45,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:45,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 1089 proven. 104 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-10-23 21:18:46,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:46,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367249790] [2024-10-23 21:18:46,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367249790] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:18:46,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759673255] [2024-10-23 21:18:46,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:46,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:18:46,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:18:46,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:18:46,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 21:18:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:46,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:18:46,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:18:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 1343 trivial. 0 not checked. [2024-10-23 21:18:46,751 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:18:46,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759673255] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:46,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:18:46,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:18:46,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043635618] [2024-10-23 21:18:46,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:46,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:18:46,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:46,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:18:46,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:18:46,756 INFO L87 Difference]: Start difference. First operand 3207 states and 3438 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:47,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:47,250 INFO L93 Difference]: Finished difference Result 6769 states and 7306 transitions. [2024-10-23 21:18:47,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:18:47,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 625 [2024-10-23 21:18:47,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:47,262 INFO L225 Difference]: With dead ends: 6769 [2024-10-23 21:18:47,262 INFO L226 Difference]: Without dead ends: 3741 [2024-10-23 21:18:47,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:18:47,267 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 146 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:47,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 223 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:18:47,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2024-10-23 21:18:47,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 3385. [2024-10-23 21:18:47,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3385 states, 3384 states have (on average 1.0679669030732861) internal successors, (3614), 3384 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:47,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3385 states to 3385 states and 3614 transitions. [2024-10-23 21:18:47,321 INFO L78 Accepts]: Start accepts. Automaton has 3385 states and 3614 transitions. Word has length 625 [2024-10-23 21:18:47,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:47,322 INFO L471 AbstractCegarLoop]: Abstraction has 3385 states and 3614 transitions. [2024-10-23 21:18:47,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:47,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3385 states and 3614 transitions. [2024-10-23 21:18:47,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2024-10-23 21:18:47,327 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:47,328 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:47,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-23 21:18:47,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:18:47,529 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:47,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:47,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1783670664, now seen corresponding path program 1 times [2024-10-23 21:18:47,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:47,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973957114] [2024-10-23 21:18:47,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:47,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 1165 proven. 104 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-10-23 21:18:48,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:48,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973957114] [2024-10-23 21:18:48,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973957114] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:18:48,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662214624] [2024-10-23 21:18:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:48,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:18:48,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:18:48,290 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:18:48,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 21:18:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:48,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:18:48,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:18:49,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 1192 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2024-10-23 21:18:49,091 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:18:49,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662214624] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:49,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:18:49,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:18:49,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276360834] [2024-10-23 21:18:49,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:49,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:18:49,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:49,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:18:49,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:18:49,094 INFO L87 Difference]: Start difference. First operand 3385 states and 3614 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:49,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:49,561 INFO L93 Difference]: Finished difference Result 6769 states and 7231 transitions. [2024-10-23 21:18:49,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:18:49,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 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 644 [2024-10-23 21:18:49,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:49,575 INFO L225 Difference]: With dead ends: 6769 [2024-10-23 21:18:49,575 INFO L226 Difference]: Without dead ends: 3385 [2024-10-23 21:18:49,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 643 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:18:49,579 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 71 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:49,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 230 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 21:18:49,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3385 states. [2024-10-23 21:18:49,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3385 to 3385. [2024-10-23 21:18:49,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3385 states, 3384 states have (on average 1.059692671394799) internal successors, (3586), 3384 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3385 states to 3385 states and 3586 transitions. [2024-10-23 21:18:49,630 INFO L78 Accepts]: Start accepts. Automaton has 3385 states and 3586 transitions. Word has length 644 [2024-10-23 21:18:49,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:49,631 INFO L471 AbstractCegarLoop]: Abstraction has 3385 states and 3586 transitions. [2024-10-23 21:18:49,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:49,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3385 states and 3586 transitions. [2024-10-23 21:18:49,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2024-10-23 21:18:49,644 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:49,645 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:49,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-23 21:18:49,846 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,SelfDestructingSolverStorable13 [2024-10-23 21:18:49,846 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:49,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:49,847 INFO L85 PathProgramCache]: Analyzing trace with hash 809319584, now seen corresponding path program 1 times [2024-10-23 21:18:49,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:49,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821382427] [2024-10-23 21:18:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:49,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:50,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1816 backedges. 1314 proven. 155 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-10-23 21:18:50,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:50,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821382427] [2024-10-23 21:18:50,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821382427] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:18:50,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409084683] [2024-10-23 21:18:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:50,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:18:50,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:18:50,403 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:18:50,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 21:18:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:50,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:18:50,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:18:50,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1816 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2024-10-23 21:18:50,773 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:18:50,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409084683] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:50,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:18:50,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-23 21:18:50,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658707867] [2024-10-23 21:18:50,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:50,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:18:50,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:50,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:18:50,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:18:50,775 INFO L87 Difference]: Start difference. First operand 3385 states and 3586 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:51,170 INFO L93 Difference]: Finished difference Result 7481 states and 7949 transitions. [2024-10-23 21:18:51,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:18:51,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 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 789 [2024-10-23 21:18:51,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:51,183 INFO L225 Difference]: With dead ends: 7481 [2024-10-23 21:18:51,183 INFO L226 Difference]: Without dead ends: 4275 [2024-10-23 21:18:51,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:18:51,189 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 80 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:51,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 24 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 21:18:51,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2024-10-23 21:18:51,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 4097. [2024-10-23 21:18:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4097 states, 4096 states have (on average 1.05615234375) internal successors, (4326), 4096 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4097 states to 4097 states and 4326 transitions. [2024-10-23 21:18:51,246 INFO L78 Accepts]: Start accepts. Automaton has 4097 states and 4326 transitions. Word has length 789 [2024-10-23 21:18:51,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:51,247 INFO L471 AbstractCegarLoop]: Abstraction has 4097 states and 4326 transitions. [2024-10-23 21:18:51,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:51,248 INFO L276 IsEmpty]: Start isEmpty. Operand 4097 states and 4326 transitions. [2024-10-23 21:18:51,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2024-10-23 21:18:51,255 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:51,256 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:51,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-23 21:18:51,456 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,SelfDestructingSolverStorable14 [2024-10-23 21:18:51,457 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:51,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:51,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1262037527, now seen corresponding path program 1 times [2024-10-23 21:18:51,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:51,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718103746] [2024-10-23 21:18:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:51,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:52,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1895 backedges. 1393 proven. 155 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-10-23 21:18:52,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:52,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718103746] [2024-10-23 21:18:52,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718103746] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:18:52,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982993155] [2024-10-23 21:18:52,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:52,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:18:52,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:18:52,071 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:18:52,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 21:18:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:52,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:18:52,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:18:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1895 backedges. 1393 proven. 155 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-10-23 21:18:52,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:18:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1895 backedges. 1393 proven. 155 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-10-23 21:18:53,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982993155] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 21:18:53,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 21:18:53,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-10-23 21:18:53,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436858771] [2024-10-23 21:18:53,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 21:18:53,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-23 21:18:53,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:53,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-23 21:18:53,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:18:53,163 INFO L87 Difference]: Start difference. First operand 4097 states and 4326 transitions. Second operand has 6 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:54,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:54,108 INFO L93 Difference]: Finished difference Result 9441 states and 9972 transitions. [2024-10-23 21:18:54,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-23 21:18:54,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 0 states have call successors, (0), 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 818 [2024-10-23 21:18:54,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:54,117 INFO L225 Difference]: With dead ends: 9441 [2024-10-23 21:18:54,117 INFO L226 Difference]: Without dead ends: 5523 [2024-10-23 21:18:54,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1638 GetRequests, 1634 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:18:54,122 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 39 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:54,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 61 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:18:54,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2024-10-23 21:18:54,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 4809. [2024-10-23 21:18:54,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 4808 states have (on average 1.0526206322795342) internal successors, (5061), 4808 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:54,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 5061 transitions. [2024-10-23 21:18:54,184 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 5061 transitions. Word has length 818 [2024-10-23 21:18:54,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:54,185 INFO L471 AbstractCegarLoop]: Abstraction has 4809 states and 5061 transitions. [2024-10-23 21:18:54,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:54,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 5061 transitions. [2024-10-23 21:18:54,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2024-10-23 21:18:54,193 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:54,194 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:54,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-23 21:18:54,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:18:54,395 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:54,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:54,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1996472289, now seen corresponding path program 1 times [2024-10-23 21:18:54,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:54,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363185026] [2024-10-23 21:18:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:54,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2484 backedges. 1680 proven. 0 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2024-10-23 21:18:55,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:55,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363185026] [2024-10-23 21:18:55,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363185026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:55,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:55,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:18:55,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876729924] [2024-10-23 21:18:55,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:55,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:18:55,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:55,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:18:55,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:18:55,374 INFO L87 Difference]: Start difference. First operand 4809 states and 5061 transitions. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:55,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:55,739 INFO L93 Difference]: Finished difference Result 9795 states and 10339 transitions. [2024-10-23 21:18:55,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:18:55,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 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 880 [2024-10-23 21:18:55,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:55,752 INFO L225 Difference]: With dead ends: 9795 [2024-10-23 21:18:55,754 INFO L226 Difference]: Without dead ends: 5165 [2024-10-23 21:18:55,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:18:55,759 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:55,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 213 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 21:18:55,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2024-10-23 21:18:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 5165. [2024-10-23 21:18:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 1.047443841982959) internal successors, (5409), 5164 states have internal predecessors, (5409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:55,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 5409 transitions. [2024-10-23 21:18:55,818 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 5409 transitions. Word has length 880 [2024-10-23 21:18:55,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:55,819 INFO L471 AbstractCegarLoop]: Abstraction has 5165 states and 5409 transitions. [2024-10-23 21:18:55,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:55,820 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 5409 transitions. [2024-10-23 21:18:55,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2024-10-23 21:18:55,828 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:55,829 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:55,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 21:18:55,829 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:55,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:55,830 INFO L85 PathProgramCache]: Analyzing trace with hash -379311886, now seen corresponding path program 1 times [2024-10-23 21:18:55,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:55,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063974358] [2024-10-23 21:18:55,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:55,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2487 backedges. 1671 proven. 93 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2024-10-23 21:18:56,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:56,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063974358] [2024-10-23 21:18:56,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063974358] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:18:56,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358394920] [2024-10-23 21:18:56,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:56,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:18:56,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:18:56,580 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:18:56,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-23 21:18:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:56,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:18:56,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:18:58,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2487 backedges. 802 proven. 0 refuted. 0 times theorem prover too weak. 1685 trivial. 0 not checked. [2024-10-23 21:18:58,667 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:18:58,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358394920] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:58,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:18:58,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-23 21:18:58,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056568019] [2024-10-23 21:18:58,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:58,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:18:58,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:58,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:18:58,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:18:58,670 INFO L87 Difference]: Start difference. First operand 5165 states and 5409 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:59,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:59,022 INFO L93 Difference]: Finished difference Result 10329 states and 10820 transitions. [2024-10-23 21:18:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:18:59,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 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 898 [2024-10-23 21:18:59,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:59,032 INFO L225 Difference]: With dead ends: 10329 [2024-10-23 21:18:59,032 INFO L226 Difference]: Without dead ends: 5165 [2024-10-23 21:18:59,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 897 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:18:59,038 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:59,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 21:18:59,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2024-10-23 21:18:59,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 5165. [2024-10-23 21:18:59,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 1.0350503485670024) internal successors, (5345), 5164 states have internal predecessors, (5345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:59,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 5345 transitions. [2024-10-23 21:18:59,093 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 5345 transitions. Word has length 898 [2024-10-23 21:18:59,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:59,094 INFO L471 AbstractCegarLoop]: Abstraction has 5165 states and 5345 transitions. [2024-10-23 21:18:59,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:59,095 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 5345 transitions. [2024-10-23 21:18:59,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2024-10-23 21:18:59,104 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:59,104 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:59,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-23 21:18:59,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-23 21:18:59,306 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:59,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:59,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1894671483, now seen corresponding path program 1 times [2024-10-23 21:18:59,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:59,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919617458] [2024-10-23 21:18:59,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:59,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 1638 proven. 93 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2024-10-23 21:19:00,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:00,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919617458] [2024-10-23 21:19:00,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919617458] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:19:00,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682212826] [2024-10-23 21:19:00,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:00,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:00,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:19:00,029 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) [2024-10-23 21:19:00,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-23 21:19:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:00,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:19:00,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:19:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 2229 trivial. 0 not checked. [2024-10-23 21:19:00,358 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:19:00,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682212826] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:00,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:19:00,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:19:00,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688215818] [2024-10-23 21:19:00,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:00,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:00,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:00,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:00,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:00,360 INFO L87 Difference]: Start difference. First operand 5165 states and 5345 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:00,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:00,716 INFO L93 Difference]: Finished difference Result 10151 states and 10510 transitions. [2024-10-23 21:19:00,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:00,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 949 [2024-10-23 21:19:00,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:00,723 INFO L225 Difference]: With dead ends: 10151 [2024-10-23 21:19:00,723 INFO L226 Difference]: Without dead ends: 5165 [2024-10-23 21:19:00,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 948 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:00,728 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 148 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:00,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 199 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 21:19:00,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2024-10-23 21:19:00,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 4987. [2024-10-23 21:19:00,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4987 states, 4986 states have (on average 1.0314881668672282) internal successors, (5143), 4986 states have internal predecessors, (5143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4987 states to 4987 states and 5143 transitions. [2024-10-23 21:19:00,779 INFO L78 Accepts]: Start accepts. Automaton has 4987 states and 5143 transitions. Word has length 949 [2024-10-23 21:19:00,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:00,780 INFO L471 AbstractCegarLoop]: Abstraction has 4987 states and 5143 transitions. [2024-10-23 21:19:00,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:00,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4987 states and 5143 transitions. [2024-10-23 21:19:00,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2024-10-23 21:19:00,789 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:00,790 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:00,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-23 21:19:00,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:00,994 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:00,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:00,994 INFO L85 PathProgramCache]: Analyzing trace with hash -678722596, now seen corresponding path program 1 times [2024-10-23 21:19:00,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:00,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436140851] [2024-10-23 21:19:00,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:00,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 1846 proven. 93 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2024-10-23 21:19:01,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:01,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436140851] [2024-10-23 21:19:01,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436140851] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:19:01,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601830506] [2024-10-23 21:19:01,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:01,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:01,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:19:01,620 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:19:01,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-23 21:19:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:01,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:19:01,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:19:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 1939 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2024-10-23 21:19:02,396 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:19:02,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601830506] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:02,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:19:02,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:19:02,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147682053] [2024-10-23 21:19:02,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:02,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:02,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:02,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:02,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:02,400 INFO L87 Difference]: Start difference. First operand 4987 states and 5143 transitions. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:02,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:02,797 INFO L93 Difference]: Finished difference Result 9795 states and 10106 transitions. [2024-10-23 21:19:02,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:02,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 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 954 [2024-10-23 21:19:02,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:02,806 INFO L225 Difference]: With dead ends: 9795 [2024-10-23 21:19:02,806 INFO L226 Difference]: Without dead ends: 4987 [2024-10-23 21:19:02,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 953 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:02,812 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:02,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 41 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 21:19:02,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4987 states. [2024-10-23 21:19:02,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4987 to 4809. [2024-10-23 21:19:02,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 4808 states have (on average 1.0320299500831946) internal successors, (4962), 4808 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 4962 transitions. [2024-10-23 21:19:02,871 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 4962 transitions. Word has length 954 [2024-10-23 21:19:02,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:02,872 INFO L471 AbstractCegarLoop]: Abstraction has 4809 states and 4962 transitions. [2024-10-23 21:19:02,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:02,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 4962 transitions. [2024-10-23 21:19:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2024-10-23 21:19:02,882 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:02,882 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:02,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-23 21:19:03,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:03,083 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:03,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:03,084 INFO L85 PathProgramCache]: Analyzing trace with hash -142630243, now seen corresponding path program 1 times [2024-10-23 21:19:03,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:03,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523456062] [2024-10-23 21:19:03,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:03,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3493 backedges. 2444 proven. 72 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2024-10-23 21:19:04,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:04,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523456062] [2024-10-23 21:19:04,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523456062] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:19:04,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145051052] [2024-10-23 21:19:04,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:04,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:04,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:19:04,251 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:19:04,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-23 21:19:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:04,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-23 21:19:04,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:19:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3493 backedges. 2157 proven. 0 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2024-10-23 21:19:04,936 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:19:04,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145051052] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:04,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:19:04,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-10-23 21:19:04,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242509445] [2024-10-23 21:19:04,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:04,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:19:04,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:04,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:19:04,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:19:04,941 INFO L87 Difference]: Start difference. First operand 4809 states and 4962 transitions. Second operand has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:05,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:05,635 INFO L93 Difference]: Finished difference Result 9795 states and 10115 transitions. [2024-10-23 21:19:05,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:19:05,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 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 1031 [2024-10-23 21:19:05,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:05,642 INFO L225 Difference]: With dead ends: 9795 [2024-10-23 21:19:05,643 INFO L226 Difference]: Without dead ends: 5165 [2024-10-23 21:19:05,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1030 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:19:05,647 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 113 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:05,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 39 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:19:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2024-10-23 21:19:05,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 4987. [2024-10-23 21:19:05,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4987 states, 4986 states have (on average 1.0312876052948254) internal successors, (5142), 4986 states have internal predecessors, (5142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4987 states to 4987 states and 5142 transitions. [2024-10-23 21:19:05,701 INFO L78 Accepts]: Start accepts. Automaton has 4987 states and 5142 transitions. Word has length 1031 [2024-10-23 21:19:05,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:05,702 INFO L471 AbstractCegarLoop]: Abstraction has 4987 states and 5142 transitions. [2024-10-23 21:19:05,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4987 states and 5142 transitions. [2024-10-23 21:19:05,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1034 [2024-10-23 21:19:05,711 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:05,712 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:05,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-23 21:19:05,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-23 21:19:05,913 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:05,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:05,914 INFO L85 PathProgramCache]: Analyzing trace with hash -109247895, now seen corresponding path program 1 times [2024-10-23 21:19:05,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:05,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850692264] [2024-10-23 21:19:05,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:05,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3154 backedges. 1891 proven. 7 refuted. 0 times theorem prover too weak. 1256 trivial. 0 not checked. [2024-10-23 21:19:06,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850692264] [2024-10-23 21:19:06,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850692264] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:19:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832523218] [2024-10-23 21:19:06,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:06,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:06,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:19:06,665 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:19:06,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-23 21:19:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:06,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:19:07,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:19:07,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3154 backedges. 1898 proven. 0 refuted. 0 times theorem prover too weak. 1256 trivial. 0 not checked. [2024-10-23 21:19:07,233 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:19:07,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832523218] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:07,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:19:07,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:19:07,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105979113] [2024-10-23 21:19:07,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:07,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:07,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:07,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:07,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:07,236 INFO L87 Difference]: Start difference. First operand 4987 states and 5142 transitions. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:07,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:07,598 INFO L93 Difference]: Finished difference Result 9973 states and 10283 transitions. [2024-10-23 21:19:07,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:07,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 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 1033 [2024-10-23 21:19:07,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:07,606 INFO L225 Difference]: With dead ends: 9973 [2024-10-23 21:19:07,607 INFO L226 Difference]: Without dead ends: 5165 [2024-10-23 21:19:07,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 1032 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:07,613 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:07,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 219 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 21:19:07,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2024-10-23 21:19:07,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 4809. [2024-10-23 21:19:07,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 4808 states have (on average 1.028910149750416) internal successors, (4947), 4808 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:07,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 4947 transitions. [2024-10-23 21:19:07,692 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 4947 transitions. Word has length 1033 [2024-10-23 21:19:07,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:07,693 INFO L471 AbstractCegarLoop]: Abstraction has 4809 states and 4947 transitions. [2024-10-23 21:19:07,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:07,693 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 4947 transitions. [2024-10-23 21:19:07,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1646 [2024-10-23 21:19:07,729 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:07,730 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:07,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-23 21:19:07,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-23 21:19:07,931 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:07,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:07,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1009294722, now seen corresponding path program 1 times [2024-10-23 21:19:07,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:07,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911521395] [2024-10-23 21:19:07,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:07,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8542 backedges. 4927 proven. 0 refuted. 0 times theorem prover too weak. 3615 trivial. 0 not checked. [2024-10-23 21:19:09,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:09,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911521395] [2024-10-23 21:19:09,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911521395] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:09,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:09,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-23 21:19:09,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074382080] [2024-10-23 21:19:09,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:09,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-23 21:19:09,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-23 21:19:09,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:19:09,942 INFO L87 Difference]: Start difference. First operand 4809 states and 4947 transitions. Second operand has 7 states, 7 states have (on average 92.85714285714286) internal successors, (650), 6 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:11,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:11,082 INFO L93 Difference]: Finished difference Result 11770 states and 12136 transitions. [2024-10-23 21:19:11,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-23 21:19:11,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 92.85714285714286) internal successors, (650), 6 states have internal predecessors, (650), 0 states have call successors, (0), 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 1645 [2024-10-23 21:19:11,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:11,119 INFO L225 Difference]: With dead ends: 11770 [2024-10-23 21:19:11,120 INFO L226 Difference]: Without dead ends: 6591 [2024-10-23 21:19:11,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:19:11,128 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 156 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:11,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 41 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:19:11,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2024-10-23 21:19:11,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 5877. [2024-10-23 21:19:11,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5877 states, 5876 states have (on average 1.0212729748127978) internal successors, (6001), 5876 states have internal predecessors, (6001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5877 states to 5877 states and 6001 transitions. [2024-10-23 21:19:11,182 INFO L78 Accepts]: Start accepts. Automaton has 5877 states and 6001 transitions. Word has length 1645 [2024-10-23 21:19:11,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:11,183 INFO L471 AbstractCegarLoop]: Abstraction has 5877 states and 6001 transitions. [2024-10-23 21:19:11,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.85714285714286) internal successors, (650), 6 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:11,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5877 states and 6001 transitions. [2024-10-23 21:19:11,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1742 [2024-10-23 21:19:11,202 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:11,203 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 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, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:11,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-23 21:19:11,203 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:11,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:11,204 INFO L85 PathProgramCache]: Analyzing trace with hash 205302102, now seen corresponding path program 1 times [2024-10-23 21:19:11,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:11,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897634266] [2024-10-23 21:19:11,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:11,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 9519 backedges. 2756 proven. 1045 refuted. 0 times theorem prover too weak. 5718 trivial. 0 not checked. [2024-10-23 21:19:12,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:12,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897634266] [2024-10-23 21:19:12,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897634266] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:19:12,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756635905] [2024-10-23 21:19:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:12,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:12,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:19:12,412 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:19:12,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-23 21:19:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:12,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 2091 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:19:12,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:19:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9519 backedges. 3801 proven. 0 refuted. 0 times theorem prover too weak. 5718 trivial. 0 not checked. [2024-10-23 21:19:13,024 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:19:13,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756635905] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:13,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:19:13,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:19:13,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242165611] [2024-10-23 21:19:13,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:13,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:13,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:13,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:13,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:13,027 INFO L87 Difference]: Start difference. First operand 5877 states and 6001 transitions. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:13,371 INFO L93 Difference]: Finished difference Result 12109 states and 12360 transitions. [2024-10-23 21:19:13,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:13,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 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 1741 [2024-10-23 21:19:13,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:13,375 INFO L225 Difference]: With dead ends: 12109 [2024-10-23 21:19:13,375 INFO L226 Difference]: Without dead ends: 4987 [2024-10-23 21:19:13,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1744 GetRequests, 1740 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:13,379 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:13,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 216 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 21:19:13,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4987 states. [2024-10-23 21:19:13,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4987 to 4809. [2024-10-23 21:19:13,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 4808 states have (on average 1.0162229617304492) internal successors, (4886), 4808 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:13,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 4886 transitions. [2024-10-23 21:19:13,416 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 4886 transitions. Word has length 1741 [2024-10-23 21:19:13,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:13,417 INFO L471 AbstractCegarLoop]: Abstraction has 4809 states and 4886 transitions. [2024-10-23 21:19:13,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:13,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 4886 transitions. [2024-10-23 21:19:13,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1813 [2024-10-23 21:19:13,437 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:13,437 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:19:13,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-23 21:19:13,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-23 21:19:13,639 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:13,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:13,639 INFO L85 PathProgramCache]: Analyzing trace with hash 134838252, now seen corresponding path program 1 times [2024-10-23 21:19:13,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:13,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331799244] [2024-10-23 21:19:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:13,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 10875 backedges. 2724 proven. 0 refuted. 0 times theorem prover too weak. 8151 trivial. 0 not checked. [2024-10-23 21:19:15,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:15,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331799244] [2024-10-23 21:19:15,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331799244] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:15,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:15,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:19:15,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096209256] [2024-10-23 21:19:15,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:15,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:19:15,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:15,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:19:15,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:19:15,526 INFO L87 Difference]: Start difference. First operand 4809 states and 4886 transitions. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:16,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:16,061 INFO L93 Difference]: Finished difference Result 11219 states and 11417 transitions. [2024-10-23 21:19:16,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:19:16,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 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 1812 [2024-10-23 21:19:16,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:16,066 INFO L225 Difference]: With dead ends: 11219 [2024-10-23 21:19:16,066 INFO L226 Difference]: Without dead ends: 6589 [2024-10-23 21:19:16,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:19:16,069 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 235 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:16,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 15 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:19:16,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6589 states. [2024-10-23 21:19:16,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6589 to 5699. [2024-10-23 21:19:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5699 states, 5698 states have (on average 1.0175500175500176) internal successors, (5798), 5698 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:16,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5699 states to 5699 states and 5798 transitions. [2024-10-23 21:19:16,136 INFO L78 Accepts]: Start accepts. Automaton has 5699 states and 5798 transitions. Word has length 1812 [2024-10-23 21:19:16,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:16,137 INFO L471 AbstractCegarLoop]: Abstraction has 5699 states and 5798 transitions. [2024-10-23 21:19:16,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:16,137 INFO L276 IsEmpty]: Start isEmpty. Operand 5699 states and 5798 transitions. [2024-10-23 21:19:16,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2115 [2024-10-23 21:19:16,155 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:16,156 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 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, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:16,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-23 21:19:16,156 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:16,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:16,157 INFO L85 PathProgramCache]: Analyzing trace with hash 174001653, now seen corresponding path program 1 times [2024-10-23 21:19:16,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:16,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514494856] [2024-10-23 21:19:16,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:16,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 14461 backedges. 3142 proven. 0 refuted. 0 times theorem prover too weak. 11319 trivial. 0 not checked. [2024-10-23 21:19:18,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:18,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514494856] [2024-10-23 21:19:18,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514494856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:18,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:18,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:19:18,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492637775] [2024-10-23 21:19:18,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:18,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:19:18,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:18,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:19:18,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:19:18,321 INFO L87 Difference]: Start difference. First operand 5699 states and 5798 transitions. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:18,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:18,673 INFO L93 Difference]: Finished difference Result 11219 states and 11405 transitions. [2024-10-23 21:19:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:19:18,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 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 2114 [2024-10-23 21:19:18,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:18,678 INFO L225 Difference]: With dead ends: 11219 [2024-10-23 21:19:18,678 INFO L226 Difference]: Without dead ends: 5699 [2024-10-23 21:19:18,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:19:18,681 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 318 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:18,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 8 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 21:19:18,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2024-10-23 21:19:18,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 5343. [2024-10-23 21:19:18,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5343 states, 5342 states have (on average 1.015350056158742) internal successors, (5424), 5342 states have internal predecessors, (5424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5343 states to 5343 states and 5424 transitions. [2024-10-23 21:19:18,717 INFO L78 Accepts]: Start accepts. Automaton has 5343 states and 5424 transitions. Word has length 2114 [2024-10-23 21:19:18,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:18,719 INFO L471 AbstractCegarLoop]: Abstraction has 5343 states and 5424 transitions. [2024-10-23 21:19:18,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:18,719 INFO L276 IsEmpty]: Start isEmpty. Operand 5343 states and 5424 transitions. [2024-10-23 21:19:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2312 [2024-10-23 21:19:18,745 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:18,746 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 13, 13, 13, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 7, 7, 7, 7, 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, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:18,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-23 21:19:18,746 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:18,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:18,747 INFO L85 PathProgramCache]: Analyzing trace with hash -645343085, now seen corresponding path program 1 times [2024-10-23 21:19:18,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:18,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546227567] [2024-10-23 21:19:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:18,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 16826 backedges. 3650 proven. 59 refuted. 0 times theorem prover too weak. 13117 trivial. 0 not checked. [2024-10-23 21:19:20,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:20,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546227567] [2024-10-23 21:19:20,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546227567] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:19:20,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516853944] [2024-10-23 21:19:20,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:20,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:20,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:19:20,733 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:19:20,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-23 21:19:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:21,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 2735 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:19:21,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:19:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16826 backedges. 2513 proven. 0 refuted. 0 times theorem prover too weak. 14313 trivial. 0 not checked. [2024-10-23 21:19:21,635 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:19:21,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516853944] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:21,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:19:21,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-23 21:19:21,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513765006] [2024-10-23 21:19:21,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:21,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:21,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:21,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:21,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:21,639 INFO L87 Difference]: Start difference. First operand 5343 states and 5424 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:21,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:21,959 INFO L93 Difference]: Finished difference Result 10329 states and 10489 transitions. [2024-10-23 21:19:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:21,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2311 [2024-10-23 21:19:21,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:21,963 INFO L225 Difference]: With dead ends: 10329 [2024-10-23 21:19:21,963 INFO L226 Difference]: Without dead ends: 5343 [2024-10-23 21:19:21,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2315 GetRequests, 2311 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:21,966 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 51 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:21,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 203 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 21:19:21,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5343 states. [2024-10-23 21:19:21,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5343 to 5165. [2024-10-23 21:19:21,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 1.0133617350890782) internal successors, (5233), 5164 states have internal predecessors, (5233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 5233 transitions. [2024-10-23 21:19:21,998 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 5233 transitions. Word has length 2311 [2024-10-23 21:19:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:21,999 INFO L471 AbstractCegarLoop]: Abstraction has 5165 states and 5233 transitions. [2024-10-23 21:19:21,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:21,999 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 5233 transitions. [2024-10-23 21:19:22,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2729 [2024-10-23 21:19:22,066 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:22,067 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 16, 16, 16, 14, 14, 14, 14, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:22,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-23 21:19:22,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:22,268 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:22,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:22,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1109137865, now seen corresponding path program 1 times [2024-10-23 21:19:22,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:22,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007667901] [2024-10-23 21:19:22,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:22,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:24,170 INFO L134 CoverageAnalysis]: Checked inductivity of 23424 backedges. 11345 proven. 0 refuted. 0 times theorem prover too weak. 12079 trivial. 0 not checked. [2024-10-23 21:19:24,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:24,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007667901] [2024-10-23 21:19:24,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007667901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:24,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:24,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-23 21:19:24,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904852812] [2024-10-23 21:19:24,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:24,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 21:19:24,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:24,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 21:19:24,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:19:24,174 INFO L87 Difference]: Start difference. First operand 5165 states and 5233 transitions. Second operand has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:24,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:24,885 INFO L93 Difference]: Finished difference Result 9081 states and 9201 transitions. [2024-10-23 21:19:24,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-23 21:19:24,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 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 2728 [2024-10-23 21:19:24,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:24,887 INFO L225 Difference]: With dead ends: 9081 [2024-10-23 21:19:24,887 INFO L226 Difference]: Without dead ends: 0 [2024-10-23 21:19:24,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:24,890 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 156 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:24,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 264 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:19:24,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-23 21:19:24,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-23 21:19:24,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:24,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-23 21:19:24,891 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2728 [2024-10-23 21:19:24,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:24,891 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-23 21:19:24,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:24,891 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-23 21:19:24,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-23 21:19:24,894 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-23 21:19:24,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-23 21:19:24,899 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:24,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-23 21:19:26,312 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-23 21:19:26,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:19:26 BoogieIcfgContainer [2024-10-23 21:19:26,342 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-23 21:19:26,344 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-23 21:19:26,344 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-23 21:19:26,344 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-23 21:19:26,345 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:18:31" (3/4) ... [2024-10-23 21:19:26,346 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-23 21:19:26,361 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-23 21:19:26,362 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-23 21:19:26,363 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-23 21:19:26,364 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-23 21:19:26,534 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-23 21:19:26,535 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-23 21:19:26,535 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-23 21:19:26,535 INFO L158 Benchmark]: Toolchain (without parser) took 57291.45ms. Allocated memory was 136.3MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 64.8MB in the beginning and 770.0MB in the end (delta: -705.2MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-10-23 21:19:26,536 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 136.3MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 21:19:26,537 INFO L158 Benchmark]: CACSL2BoogieTranslator took 642.86ms. Allocated memory was 136.3MB in the beginning and 178.3MB in the end (delta: 41.9MB). Free memory was 64.5MB in the beginning and 123.8MB in the end (delta: -59.3MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2024-10-23 21:19:26,537 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.17ms. Allocated memory is still 178.3MB. Free memory was 123.8MB in the beginning and 114.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-23 21:19:26,537 INFO L158 Benchmark]: Boogie Preprocessor took 121.38ms. Allocated memory is still 178.3MB. Free memory was 113.3MB in the beginning and 101.7MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-23 21:19:26,537 INFO L158 Benchmark]: RCFGBuilder took 1543.61ms. Allocated memory is still 178.3MB. Free memory was 100.6MB in the beginning and 132.7MB in the end (delta: -32.1MB). Peak memory consumption was 69.7MB. Max. memory is 16.1GB. [2024-10-23 21:19:26,538 INFO L158 Benchmark]: TraceAbstraction took 54677.78ms. Allocated memory was 178.3MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 131.7MB in the beginning and 784.7MB in the end (delta: -653.0MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-10-23 21:19:26,538 INFO L158 Benchmark]: Witness Printer took 191.08ms. Allocated memory is still 1.9GB. Free memory was 784.7MB in the beginning and 770.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-23 21:19:26,539 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 136.3MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 642.86ms. Allocated memory was 136.3MB in the beginning and 178.3MB in the end (delta: 41.9MB). Free memory was 64.5MB in the beginning and 123.8MB in the end (delta: -59.3MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.17ms. Allocated memory is still 178.3MB. Free memory was 123.8MB in the beginning and 114.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 121.38ms. Allocated memory is still 178.3MB. Free memory was 113.3MB in the beginning and 101.7MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 1543.61ms. Allocated memory is still 178.3MB. Free memory was 100.6MB in the beginning and 132.7MB in the end (delta: -32.1MB). Peak memory consumption was 69.7MB. Max. memory is 16.1GB. * TraceAbstraction took 54677.78ms. Allocated memory was 178.3MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 131.7MB in the beginning and 784.7MB in the end (delta: -653.0MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * Witness Printer took 191.08ms. Allocated memory is still 1.9GB. Free memory was 784.7MB in the beginning and 770.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 119]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.2s, OverallIterations: 28, TraceHistogramMax: 22, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 15.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3111 SdHoareTripleChecker+Valid, 14.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3111 mSDsluCounter, 3550 SdHoareTripleChecker+Invalid, 11.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 225 mSDsCounter, 1173 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16498 IncrementalHoareTripleChecker+Invalid, 17671 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1173 mSolverCounterUnsat, 3325 mSDtfsCounter, 16498 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13662 GetRequests, 13578 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5877occurred in iteration=23, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 28 MinimizatonAttempts, 6590 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 26.1s InterpolantComputationTime, 36901 NumberOfCodeBlocks, 36901 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 37676 ConstructedInterpolants, 0 QuantifiedInterpolants, 101083 SizeOfPredicates, 0 NumberOfNonLiveVariables, 15673 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 43 InterpolantComputations, 27 PerfectInterpolantSequences, 160550/163025 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((103531 <= a12) && (a24 == 1)) && (7 == a15)) || (((((a24 == 1) && (7 == a21)) && (a15 == 9)) && (20 <= a12)) && (a12 <= 586307))) || ((((a24 == 1) && (a15 <= 8)) && (20 <= a12)) && (a21 <= 6))) || ((((a21 == 8) && (a24 == 1)) && (a15 <= 7)) && (((long long) a12 + 42) <= 0))) || (((((a24 == 1) && (a21 == 9)) && (a15 == 9)) && (81 <= a12)) && (a12 <= 586307))) || (((((a21 == 8) && (a24 == 1)) && (a15 == 9)) && (20 <= a12)) && (a12 <= 586307))) || ((((a24 == 1) && (a21 == 9)) && (a15 <= 7)) && (95382 <= a12))) || ((((((long long) a12 + 43) <= 0) && (a24 == 1)) && (a15 == 9)) && (10 <= a21))) || (((((a24 == 1) && (a21 == 9)) && (a15 == 9)) && (a12 <= 599999)) && (95382 <= a12))) || (((((a12 <= 11) && (a21 == 8)) && (a24 == 1)) && (a15 == 9)) && (0 <= ((long long) 41 + a12)))) || (((a15 <= 6) && (a21 <= 6)) && (((long long) a12 + 9352) <= 0))) || ((((a12 <= 11) && (a24 == 1)) && (a15 <= 8)) && (10 <= a21))) || ((((a24 == 1) && (a15 <= 8)) && (20 <= a12)) && (10 <= a21))) || (((((a24 == 1) && (a15 == 9)) && (10 <= a21)) && (a12 <= 599999)) && (81 <= a12))) || ((((a24 == 1) && (a15 == 9)) && (a12 <= 586307)) && (95382 <= a12))) || (((((a12 <= 80) && (a24 == 1)) && (a21 == 9)) && (a15 <= 7)) && (0 <= ((long long) 41 + a12)))) || (((((a24 == 1) && (7 == a21)) && (a15 == 9)) && (a12 <= 599999)) && (95382 <= a12))) || ((((a21 == 8) && (a24 == 1)) && (a15 == 9)) && (((long long) a12 + 9352) <= 0))) || (((a24 == 1) && (a15 <= 7)) && (10 <= a21))) || ((((a24 == 1) && (a15 <= 6)) || ((a15 <= 6) && (((long long) 49 + a12) <= 0))) && (a24 <= 1))) || (((((a21 == 8) && (a12 <= 73282)) && (a24 == 1)) && (20 <= a12)) && (a15 == 8))) || (((((a12 <= 80) && (a24 == 1)) && (a15 <= 8)) && (a21 == 9)) && (20 <= a12))) || (((((a12 <= 11) && (a24 == 1)) && (a15 == 9)) && (10 <= a21)) && (0 <= ((long long) 41 + a12)))) || (((((a12 <= 11) && (a24 == 1)) && (a15 <= 8)) && (a21 == 9)) && (0 <= ((long long) a12 + 42)))) || ((((a12 <= 11) && (a24 == 1)) && (a15 <= 8)) && (0 <= ((long long) 41 + a12)))) || (((((a21 == 8) && (a24 == 1)) && (a15 == 9)) && (a12 <= 599999)) && (95382 <= a12))) || (((a24 == 1) && (7 == a21)) && (a15 <= 7))) || ((((a24 == 1) && (a21 <= 6)) && (a15 <= 7)) && (((long long) 49 + a12) <= 0))) || ((((a24 == 1) && (7 == a21)) && (a15 <= 8)) && (((long long) 49 + a12) <= 0))) RESULT: Ultimate proved your program to be correct! [2024-10-23 21:19:26,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE