./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/Problem12_label36.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label36.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 8cfcc97b5952aa72da47fe0e4e97f4617137d46f4db9024e30e3a5a5c97f7e95 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 23:32:46,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 23:32:46,088 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 23:32:46,094 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 23:32:46,094 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 23:32:46,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 23:32:46,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 23:32:46,130 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 23:32:46,131 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 23:32:46,132 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 23:32:46,132 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 23:32:46,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 23:32:46,133 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 23:32:46,133 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 23:32:46,134 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 23:32:46,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 23:32:46,134 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 23:32:46,135 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 23:32:46,135 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 23:32:46,135 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 23:32:46,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 23:32:46,138 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 23:32:46,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 23:32:46,138 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 23:32:46,138 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 23:32:46,138 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 23:32:46,139 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 23:32:46,139 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 23:32:46,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 23:32:46,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 23:32:46,139 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 23:32:46,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 23:32:46,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:32:46,140 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 23:32:46,140 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 23:32:46,140 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 23:32:46,140 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 23:32:46,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 23:32:46,140 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 23:32:46,140 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 23:32:46,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 23:32:46,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 23:32:46,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cfcc97b5952aa72da47fe0e4e97f4617137d46f4db9024e30e3a5a5c97f7e95 [2024-10-13 23:32:46,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 23:32:46,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 23:32:46,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 23:32:46,373 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 23:32:46,374 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 23:32:46,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label36.c [2024-10-13 23:32:47,521 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 23:32:47,857 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 23:32:47,858 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label36.c [2024-10-13 23:32:47,886 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b8a4cb0e/e80fef2cb58b4e598b517033feb2c5ee/FLAGb86f31262 [2024-10-13 23:32:48,111 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b8a4cb0e/e80fef2cb58b4e598b517033feb2c5ee [2024-10-13 23:32:48,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 23:32:48,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 23:32:48,114 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 23:32:48,114 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 23:32:48,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 23:32:48,120 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:32:48" (1/1) ... [2024-10-13 23:32:48,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d2e2f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:32:48, skipping insertion in model container [2024-10-13 23:32:48,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:32:48" (1/1) ... [2024-10-13 23:32:48,188 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 23:32:48,396 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/Problem12_label36.c[7066,7079] [2024-10-13 23:32:48,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:32:48,912 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 23:32:48,933 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/Problem12_label36.c[7066,7079] [2024-10-13 23:32:49,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:32:49,251 INFO L204 MainTranslator]: Completed translation [2024-10-13 23:32:49,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:32:49 WrapperNode [2024-10-13 23:32:49,252 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 23:32:49,253 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 23:32:49,253 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 23:32:49,253 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 23:32:49,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:32:49" (1/1) ... [2024-10-13 23:32:49,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:32:49" (1/1) ... [2024-10-13 23:32:49,522 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-10-13 23:32:49,523 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 23:32:49,523 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 23:32:49,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 23:32:49,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 23:32:49,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:32:49" (1/1) ... [2024-10-13 23:32:49,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:32:49" (1/1) ... [2024-10-13 23:32:49,574 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:32:49" (1/1) ... [2024-10-13 23:32:49,695 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 23:32:49,695 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:32:49" (1/1) ... [2024-10-13 23:32:49,695 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:32:49" (1/1) ... [2024-10-13 23:32:49,797 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:32:49" (1/1) ... [2024-10-13 23:32:49,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:32:49" (1/1) ... [2024-10-13 23:32:49,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:32:49" (1/1) ... [2024-10-13 23:32:49,847 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:32:49" (1/1) ... [2024-10-13 23:32:49,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 23:32:49,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 23:32:49,954 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 23:32:49,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 23:32:49,955 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:32:49" (1/1) ... [2024-10-13 23:32:49,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:32:49,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:32:50,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 23:32:50,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 23:32:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 23:32:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 23:32:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 23:32:50,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 23:32:50,170 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 23:32:50,177 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 23:32:53,187 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-10-13 23:32:53,187 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 23:32:53,248 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 23:32:53,250 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 23:32:53,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:32:53 BoogieIcfgContainer [2024-10-13 23:32:53,251 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 23:32:53,252 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 23:32:53,252 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 23:32:53,255 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 23:32:53,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:32:48" (1/3) ... [2024-10-13 23:32:53,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205794aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:32:53, skipping insertion in model container [2024-10-13 23:32:53,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:32:49" (2/3) ... [2024-10-13 23:32:53,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205794aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:32:53, skipping insertion in model container [2024-10-13 23:32:53,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:32:53" (3/3) ... [2024-10-13 23:32:53,257 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label36.c [2024-10-13 23:32:53,269 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 23:32:53,269 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 23:32:53,329 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 23:32:53,333 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;@7b3bac53, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 23:32:53,334 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 23:32:53,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:32:53,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-13 23:32:53,344 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:32:53,344 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:32:53,345 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:32:53,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:32:53,349 INFO L85 PathProgramCache]: Analyzing trace with hash -655684569, now seen corresponding path program 1 times [2024-10-13 23:32:53,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:32:53,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139959002] [2024-10-13 23:32:53,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:32:53,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:32:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:32:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:32:53,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:32:53,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139959002] [2024-10-13 23:32:53,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139959002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:32:53,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:32:53,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:32:53,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968760210] [2024-10-13 23:32:53,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:32:53,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 23:32:53,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:32:53,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 23:32:53,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:32:53,541 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 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 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:32:53,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:32:53,610 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2024-10-13 23:32:53,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 23:32:53,613 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-10-13 23:32:53,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:32:53,626 INFO L225 Difference]: With dead ends: 1511 [2024-10-13 23:32:53,626 INFO L226 Difference]: Without dead ends: 754 [2024-10-13 23:32:53,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:32:53,632 INFO L432 NwaCegarLoop]: 1438 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, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:32:53,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 23:32:53,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-10-13 23:32:53,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-10-13 23:32:53,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:32:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2024-10-13 23:32:53,701 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 56 [2024-10-13 23:32:53,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:32:53,701 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2024-10-13 23:32:53,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:32:53,702 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2024-10-13 23:32:53,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-13 23:32:53,703 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:32:53,703 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:32:53,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 23:32:53,704 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:32:53,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:32:53,704 INFO L85 PathProgramCache]: Analyzing trace with hash 958028186, now seen corresponding path program 1 times [2024-10-13 23:32:53,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:32:53,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677827539] [2024-10-13 23:32:53,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:32:53,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:32:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:32:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:32:53,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:32:53,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677827539] [2024-10-13 23:32:53,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677827539] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:32:53,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:32:53,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:32:53,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392848789] [2024-10-13 23:32:53,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:32:53,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:32:53,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:32:53,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:32:53,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:32:53,900 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:32:56,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:32:56,439 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2024-10-13 23:32:56,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:32:56,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-10-13 23:32:56,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:32:56,445 INFO L225 Difference]: With dead ends: 2258 [2024-10-13 23:32:56,445 INFO L226 Difference]: Without dead ends: 1505 [2024-10-13 23:32:56,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:32:56,447 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 761 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:32:56,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 426 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-13 23:32:56,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2024-10-13 23:32:56,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2024-10-13 23:32:56,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.6389627659574468) internal successors, (2465), 1504 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:32:56,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2465 transitions. [2024-10-13 23:32:56,479 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2465 transitions. Word has length 56 [2024-10-13 23:32:56,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:32:56,479 INFO L471 AbstractCegarLoop]: Abstraction has 1505 states and 2465 transitions. [2024-10-13 23:32:56,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:32:56,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2465 transitions. [2024-10-13 23:32:56,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-13 23:32:56,482 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:32:56,482 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:32:56,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 23:32:56,482 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:32:56,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:32:56,483 INFO L85 PathProgramCache]: Analyzing trace with hash 360389802, now seen corresponding path program 1 times [2024-10-13 23:32:56,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:32:56,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714287875] [2024-10-13 23:32:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:32:56,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:32:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:32:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:32:56,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:32:56,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714287875] [2024-10-13 23:32:56,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714287875] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:32:56,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:32:56,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:32:56,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623728177] [2024-10-13 23:32:56,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:32:56,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:32:56,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:32:56,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:32:56,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:32:56,772 INFO L87 Difference]: Start difference. First operand 1505 states and 2465 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:32:59,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:32:59,835 INFO L93 Difference]: Finished difference Result 4550 states and 7430 transitions. [2024-10-13 23:32:59,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:32:59,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2024-10-13 23:32:59,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:32:59,843 INFO L225 Difference]: With dead ends: 4550 [2024-10-13 23:32:59,843 INFO L226 Difference]: Without dead ends: 3009 [2024-10-13 23:32:59,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:32:59,846 INFO L432 NwaCegarLoop]: 637 mSDtfsCounter, 705 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3077 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 3805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 3077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:32:59,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 651 Invalid, 3805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 3077 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-13 23:32:59,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2024-10-13 23:32:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 3007. [2024-10-13 23:32:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.3419827012641383) internal successors, (4034), 3006 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:32:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4034 transitions. [2024-10-13 23:32:59,881 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4034 transitions. Word has length 127 [2024-10-13 23:32:59,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:32:59,882 INFO L471 AbstractCegarLoop]: Abstraction has 3007 states and 4034 transitions. [2024-10-13 23:32:59,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:32:59,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4034 transitions. [2024-10-13 23:32:59,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-13 23:32:59,886 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:32:59,886 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:32:59,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 23:32:59,886 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:32:59,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:32:59,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1829534551, now seen corresponding path program 1 times [2024-10-13 23:32:59,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:32:59,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254312552] [2024-10-13 23:32:59,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:32:59,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:32:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:33:00,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:33:00,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254312552] [2024-10-13 23:33:00,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254312552] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:33:00,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:33:00,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:33:00,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646147716] [2024-10-13 23:33:00,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:33:00,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:33:00,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:33:00,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:33:00,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:33:00,159 INFO L87 Difference]: Start difference. First operand 3007 states and 4034 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:03,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:33:03,249 INFO L93 Difference]: Finished difference Result 9768 states and 12894 transitions. [2024-10-13 23:33:03,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:33:03,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2024-10-13 23:33:03,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:33:03,268 INFO L225 Difference]: With dead ends: 9768 [2024-10-13 23:33:03,268 INFO L226 Difference]: Without dead ends: 6762 [2024-10-13 23:33:03,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:33:03,274 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 2093 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4275 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 4842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 4275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:33:03,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2093 Valid, 449 Invalid, 4842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 4275 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-13 23:33:03,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2024-10-13 23:33:03,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6762. [2024-10-13 23:33:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6762 states, 6761 states have (on average 1.28782724449046) internal successors, (8707), 6761 states have internal predecessors, (8707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:03,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 8707 transitions. [2024-10-13 23:33:03,374 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 8707 transitions. Word has length 165 [2024-10-13 23:33:03,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:33:03,375 INFO L471 AbstractCegarLoop]: Abstraction has 6762 states and 8707 transitions. [2024-10-13 23:33:03,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:03,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 8707 transitions. [2024-10-13 23:33:03,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-10-13 23:33:03,382 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:33:03,383 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 23:33:03,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 23:33:03,383 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:33:03,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:33:03,384 INFO L85 PathProgramCache]: Analyzing trace with hash 604205675, now seen corresponding path program 1 times [2024-10-13 23:33:03,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:33:03,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416092384] [2024-10-13 23:33:03,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:03,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:33:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 23:33:03,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:33:03,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416092384] [2024-10-13 23:33:03,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416092384] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:33:03,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:33:03,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:33:03,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990036180] [2024-10-13 23:33:03,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:33:03,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:33:03,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:33:03,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:33:03,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:33:03,767 INFO L87 Difference]: Start difference. First operand 6762 states and 8707 transitions. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:06,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:33:06,301 INFO L93 Difference]: Finished difference Result 15815 states and 21399 transitions. [2024-10-13 23:33:06,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:33:06,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 268 [2024-10-13 23:33:06,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:33:06,322 INFO L225 Difference]: With dead ends: 15815 [2024-10-13 23:33:06,323 INFO L226 Difference]: Without dead ends: 9768 [2024-10-13 23:33:06,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:33:06,329 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 850 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3466 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 4019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:33:06,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 491 Invalid, 4019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3466 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-13 23:33:06,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9768 states. [2024-10-13 23:33:06,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9768 to 9766. [2024-10-13 23:33:06,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.273425499231951) internal successors, (12435), 9765 states have internal predecessors, (12435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:06,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 12435 transitions. [2024-10-13 23:33:06,447 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 12435 transitions. Word has length 268 [2024-10-13 23:33:06,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:33:06,448 INFO L471 AbstractCegarLoop]: Abstraction has 9766 states and 12435 transitions. [2024-10-13 23:33:06,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:06,448 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 12435 transitions. [2024-10-13 23:33:06,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-10-13 23:33:06,451 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:33:06,451 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 23:33:06,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 23:33:06,451 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:33:06,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:33:06,452 INFO L85 PathProgramCache]: Analyzing trace with hash -746750411, now seen corresponding path program 1 times [2024-10-13 23:33:06,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:33:06,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446452696] [2024-10-13 23:33:06,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:06,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:33:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:06,614 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-13 23:33:06,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:33:06,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446452696] [2024-10-13 23:33:06,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446452696] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:33:06,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:33:06,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:33:06,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475022059] [2024-10-13 23:33:06,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:33:06,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:33:06,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:33:06,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:33:06,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:06,617 INFO L87 Difference]: Start difference. First operand 9766 states and 12435 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:08,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:33:08,711 INFO L93 Difference]: Finished difference Result 26290 states and 34161 transitions. [2024-10-13 23:33:08,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:33:08,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 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 271 [2024-10-13 23:33:08,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:33:08,744 INFO L225 Difference]: With dead ends: 26290 [2024-10-13 23:33:08,745 INFO L226 Difference]: Without dead ends: 17276 [2024-10-13 23:33:08,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:08,752 INFO L432 NwaCegarLoop]: 590 mSDtfsCounter, 619 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:33:08,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 596 Invalid, 2816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-13 23:33:08,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17276 states. [2024-10-13 23:33:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17276 to 17276. [2024-10-13 23:33:08,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17276 states, 17275 states have (on average 1.1980318379160637) internal successors, (20696), 17275 states have internal predecessors, (20696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:08,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17276 states to 17276 states and 20696 transitions. [2024-10-13 23:33:08,932 INFO L78 Accepts]: Start accepts. Automaton has 17276 states and 20696 transitions. Word has length 271 [2024-10-13 23:33:08,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:33:08,933 INFO L471 AbstractCegarLoop]: Abstraction has 17276 states and 20696 transitions. [2024-10-13 23:33:08,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:08,933 INFO L276 IsEmpty]: Start isEmpty. Operand 17276 states and 20696 transitions. [2024-10-13 23:33:08,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-10-13 23:33:08,935 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:33:08,935 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 23:33:08,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 23:33:08,936 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:33:08,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:33:08,936 INFO L85 PathProgramCache]: Analyzing trace with hash 67993700, now seen corresponding path program 1 times [2024-10-13 23:33:08,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:33:08,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481733002] [2024-10-13 23:33:08,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:08,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:33:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-13 23:33:09,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:33:09,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481733002] [2024-10-13 23:33:09,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481733002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:33:09,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:33:09,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:33:09,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010634328] [2024-10-13 23:33:09,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:33:09,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:33:09,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:33:09,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:33:09,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:09,070 INFO L87 Difference]: Start difference. First operand 17276 states and 20696 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:11,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:33:11,066 INFO L93 Difference]: Finished difference Result 33800 states and 40635 transitions. [2024-10-13 23:33:11,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:33:11,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 286 [2024-10-13 23:33:11,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:33:11,086 INFO L225 Difference]: With dead ends: 33800 [2024-10-13 23:33:11,087 INFO L226 Difference]: Without dead ends: 17276 [2024-10-13 23:33:11,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:11,097 INFO L432 NwaCegarLoop]: 974 mSDtfsCounter, 770 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 2683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:33:11,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 981 Invalid, 2683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-13 23:33:11,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17276 states. [2024-10-13 23:33:11,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17276 to 17276. [2024-10-13 23:33:11,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17276 states, 17275 states have (on average 1.1577424023154848) internal successors, (20000), 17275 states have internal predecessors, (20000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17276 states to 17276 states and 20000 transitions. [2024-10-13 23:33:11,245 INFO L78 Accepts]: Start accepts. Automaton has 17276 states and 20000 transitions. Word has length 286 [2024-10-13 23:33:11,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:33:11,246 INFO L471 AbstractCegarLoop]: Abstraction has 17276 states and 20000 transitions. [2024-10-13 23:33:11,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:11,247 INFO L276 IsEmpty]: Start isEmpty. Operand 17276 states and 20000 transitions. [2024-10-13 23:33:11,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-10-13 23:33:11,251 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:33:11,251 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:33:11,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 23:33:11,251 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:33:11,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:33:11,252 INFO L85 PathProgramCache]: Analyzing trace with hash 947281467, now seen corresponding path program 1 times [2024-10-13 23:33:11,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:33:11,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221080466] [2024-10-13 23:33:11,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:11,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:33:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:11,427 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-13 23:33:11,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:33:11,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221080466] [2024-10-13 23:33:11,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221080466] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:33:11,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:33:11,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:33:11,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117117985] [2024-10-13 23:33:11,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:33:11,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:33:11,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:33:11,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:33:11,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:11,431 INFO L87 Difference]: Start difference. First operand 17276 states and 20000 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:13,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:33:13,353 INFO L93 Difference]: Finished difference Result 41310 states and 48606 transitions. [2024-10-13 23:33:13,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:33:13,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 355 [2024-10-13 23:33:13,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:33:13,387 INFO L225 Difference]: With dead ends: 41310 [2024-10-13 23:33:13,387 INFO L226 Difference]: Without dead ends: 24786 [2024-10-13 23:33:13,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:13,401 INFO L432 NwaCegarLoop]: 1194 mSDtfsCounter, 704 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:33:13,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1201 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-13 23:33:13,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24786 states. [2024-10-13 23:33:13,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24786 to 24035. [2024-10-13 23:33:13,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24035 states, 24034 states have (on average 1.1449613048181742) internal successors, (27518), 24034 states have internal predecessors, (27518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:13,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24035 states to 24035 states and 27518 transitions. [2024-10-13 23:33:13,684 INFO L78 Accepts]: Start accepts. Automaton has 24035 states and 27518 transitions. Word has length 355 [2024-10-13 23:33:13,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:33:13,685 INFO L471 AbstractCegarLoop]: Abstraction has 24035 states and 27518 transitions. [2024-10-13 23:33:13,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:13,686 INFO L276 IsEmpty]: Start isEmpty. Operand 24035 states and 27518 transitions. [2024-10-13 23:33:13,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-10-13 23:33:13,693 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:33:13,694 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:33:13,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 23:33:13,694 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:33:13,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:33:13,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1841932639, now seen corresponding path program 1 times [2024-10-13 23:33:13,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:33:13,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587400075] [2024-10-13 23:33:13,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:13,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:33:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-13 23:33:13,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:33:13,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587400075] [2024-10-13 23:33:13,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587400075] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:33:13,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:33:13,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:33:13,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634256586] [2024-10-13 23:33:13,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:33:13,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:33:13,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:33:13,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:33:13,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:13,918 INFO L87 Difference]: Start difference. First operand 24035 states and 27518 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 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) [2024-10-13 23:33:16,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:33:16,136 INFO L93 Difference]: Finished difference Result 60085 states and 68723 transitions. [2024-10-13 23:33:16,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:33:16,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 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 383 [2024-10-13 23:33:16,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:33:16,173 INFO L225 Difference]: With dead ends: 60085 [2024-10-13 23:33:16,173 INFO L226 Difference]: Without dead ends: 36802 [2024-10-13 23:33:16,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:16,185 INFO L432 NwaCegarLoop]: 1229 mSDtfsCounter, 637 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2612 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 2949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 2612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:33:16,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1236 Invalid, 2949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 2612 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-13 23:33:16,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36802 states. [2024-10-13 23:33:16,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36802 to 35300. [2024-10-13 23:33:16,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35300 states, 35299 states have (on average 1.1341964361596646) internal successors, (40036), 35299 states have internal predecessors, (40036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:16,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35300 states to 35300 states and 40036 transitions. [2024-10-13 23:33:16,438 INFO L78 Accepts]: Start accepts. Automaton has 35300 states and 40036 transitions. Word has length 383 [2024-10-13 23:33:16,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:33:16,438 INFO L471 AbstractCegarLoop]: Abstraction has 35300 states and 40036 transitions. [2024-10-13 23:33:16,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 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) [2024-10-13 23:33:16,439 INFO L276 IsEmpty]: Start isEmpty. Operand 35300 states and 40036 transitions. [2024-10-13 23:33:16,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-10-13 23:33:16,444 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:33:16,444 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:33:16,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 23:33:16,444 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:33:16,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:33:16,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1038026608, now seen corresponding path program 1 times [2024-10-13 23:33:16,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:33:16,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446299991] [2024-10-13 23:33:16,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:16,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:33:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:16,621 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-13 23:33:16,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:33:16,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446299991] [2024-10-13 23:33:16,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446299991] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:33:16,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:33:16,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:33:16,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573601843] [2024-10-13 23:33:16,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:33:16,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:33:16,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:33:16,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:33:16,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:16,623 INFO L87 Difference]: Start difference. First operand 35300 states and 40036 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:18,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:33:18,452 INFO L93 Difference]: Finished difference Result 78109 states and 88521 transitions. [2024-10-13 23:33:18,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:33:18,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 384 [2024-10-13 23:33:18,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:33:18,489 INFO L225 Difference]: With dead ends: 78109 [2024-10-13 23:33:18,490 INFO L226 Difference]: Without dead ends: 39806 [2024-10-13 23:33:18,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:18,504 INFO L432 NwaCegarLoop]: 1335 mSDtfsCounter, 717 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:33:18,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1342 Invalid, 2355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-13 23:33:18,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39806 states. [2024-10-13 23:33:18,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39806 to 39055. [2024-10-13 23:33:18,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39055 states, 39054 states have (on average 1.1208582987658113) internal successors, (43774), 39054 states have internal predecessors, (43774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:18,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39055 states to 39055 states and 43774 transitions. [2024-10-13 23:33:18,802 INFO L78 Accepts]: Start accepts. Automaton has 39055 states and 43774 transitions. Word has length 384 [2024-10-13 23:33:18,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:33:18,803 INFO L471 AbstractCegarLoop]: Abstraction has 39055 states and 43774 transitions. [2024-10-13 23:33:18,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:18,803 INFO L276 IsEmpty]: Start isEmpty. Operand 39055 states and 43774 transitions. [2024-10-13 23:33:18,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2024-10-13 23:33:18,814 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:33:18,814 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:33:18,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 23:33:18,814 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:33:18,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:33:18,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1891873048, now seen corresponding path program 1 times [2024-10-13 23:33:18,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:33:18,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591680317] [2024-10-13 23:33:18,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:18,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:33:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 367 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-10-13 23:33:19,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:33:19,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591680317] [2024-10-13 23:33:19,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591680317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:33:19,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:33:19,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:33:19,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024566139] [2024-10-13 23:33:19,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:33:19,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:33:19,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:33:19,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:33:19,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:19,035 INFO L87 Difference]: Start difference. First operand 39055 states and 43774 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:21,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:33:21,134 INFO L93 Difference]: Finished difference Result 93880 states and 106520 transitions. [2024-10-13 23:33:21,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:33:21,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 455 [2024-10-13 23:33:21,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:33:21,184 INFO L225 Difference]: With dead ends: 93880 [2024-10-13 23:33:21,184 INFO L226 Difference]: Without dead ends: 52573 [2024-10-13 23:33:21,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:21,208 INFO L432 NwaCegarLoop]: 1282 mSDtfsCounter, 714 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:33:21,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1289 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2172 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-13 23:33:21,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52573 states. [2024-10-13 23:33:21,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52573 to 46565. [2024-10-13 23:33:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46565 states, 46564 states have (on average 1.1123185293359676) internal successors, (51794), 46564 states have internal predecessors, (51794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:21,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46565 states to 46565 states and 51794 transitions. [2024-10-13 23:33:21,557 INFO L78 Accepts]: Start accepts. Automaton has 46565 states and 51794 transitions. Word has length 455 [2024-10-13 23:33:21,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:33:21,557 INFO L471 AbstractCegarLoop]: Abstraction has 46565 states and 51794 transitions. [2024-10-13 23:33:21,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:21,558 INFO L276 IsEmpty]: Start isEmpty. Operand 46565 states and 51794 transitions. [2024-10-13 23:33:21,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2024-10-13 23:33:21,565 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:33:21,565 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:33:21,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 23:33:21,566 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:33:21,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:33:21,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1454680039, now seen corresponding path program 1 times [2024-10-13 23:33:21,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:33:21,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610787004] [2024-10-13 23:33:21,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:21,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:33:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-10-13 23:33:21,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:33:21,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610787004] [2024-10-13 23:33:21,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610787004] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:33:21,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:33:21,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:33:21,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807687282] [2024-10-13 23:33:21,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:33:21,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:33:21,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:33:21,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:33:21,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:21,952 INFO L87 Difference]: Start difference. First operand 46565 states and 51794 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:24,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:33:24,113 INFO L93 Difference]: Finished difference Result 98386 states and 109242 transitions. [2024-10-13 23:33:24,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:33:24,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 470 [2024-10-13 23:33:24,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:33:24,165 INFO L225 Difference]: With dead ends: 98386 [2024-10-13 23:33:24,166 INFO L226 Difference]: Without dead ends: 52573 [2024-10-13 23:33:24,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:24,195 INFO L432 NwaCegarLoop]: 1110 mSDtfsCounter, 727 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:33:24,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1117 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-13 23:33:24,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52573 states. [2024-10-13 23:33:24,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52573 to 51071. [2024-10-13 23:33:24,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51071 states, 51070 states have (on average 1.0962208733111416) internal successors, (55984), 51070 states have internal predecessors, (55984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:24,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51071 states to 51071 states and 55984 transitions. [2024-10-13 23:33:24,558 INFO L78 Accepts]: Start accepts. Automaton has 51071 states and 55984 transitions. Word has length 470 [2024-10-13 23:33:24,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:33:24,558 INFO L471 AbstractCegarLoop]: Abstraction has 51071 states and 55984 transitions. [2024-10-13 23:33:24,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:24,558 INFO L276 IsEmpty]: Start isEmpty. Operand 51071 states and 55984 transitions. [2024-10-13 23:33:24,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2024-10-13 23:33:24,569 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:33:24,570 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:33:24,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 23:33:24,570 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:33:24,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:33:24,570 INFO L85 PathProgramCache]: Analyzing trace with hash 468574232, now seen corresponding path program 1 times [2024-10-13 23:33:24,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:33:24,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722073559] [2024-10-13 23:33:24,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:24,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:33:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-10-13 23:33:25,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:33:25,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722073559] [2024-10-13 23:33:25,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722073559] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:33:25,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:33:25,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:33:25,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370767435] [2024-10-13 23:33:25,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:33:25,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:33:25,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:33:25,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:33:25,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:25,135 INFO L87 Difference]: Start difference. First operand 51071 states and 55984 transitions. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:27,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:33:27,372 INFO L93 Difference]: Finished difference Result 127675 states and 141191 transitions. [2024-10-13 23:33:27,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:33:27,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 564 [2024-10-13 23:33:27,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:33:27,444 INFO L225 Difference]: With dead ends: 127675 [2024-10-13 23:33:27,444 INFO L226 Difference]: Without dead ends: 77356 [2024-10-13 23:33:27,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:27,479 INFO L432 NwaCegarLoop]: 1322 mSDtfsCounter, 719 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 2826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:33:27,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1329 Invalid, 2826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-13 23:33:27,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77356 states. [2024-10-13 23:33:28,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77356 to 72850. [2024-10-13 23:33:28,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72850 states, 72849 states have (on average 1.0854095457727628) internal successors, (79071), 72849 states have internal predecessors, (79071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:28,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72850 states to 72850 states and 79071 transitions. [2024-10-13 23:33:28,155 INFO L78 Accepts]: Start accepts. Automaton has 72850 states and 79071 transitions. Word has length 564 [2024-10-13 23:33:28,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:33:28,155 INFO L471 AbstractCegarLoop]: Abstraction has 72850 states and 79071 transitions. [2024-10-13 23:33:28,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:28,155 INFO L276 IsEmpty]: Start isEmpty. Operand 72850 states and 79071 transitions. [2024-10-13 23:33:28,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2024-10-13 23:33:28,172 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:33:28,172 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 23:33:28,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 23:33:28,173 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:33:28,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:33:28,173 INFO L85 PathProgramCache]: Analyzing trace with hash 12228477, now seen corresponding path program 1 times [2024-10-13 23:33:28,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:33:28,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745246873] [2024-10-13 23:33:28,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:28,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:33:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 862 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2024-10-13 23:33:28,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:33:28,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745246873] [2024-10-13 23:33:28,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745246873] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:33:28,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:33:28,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:33:28,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935873993] [2024-10-13 23:33:28,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:33:28,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:33:28,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:33:28,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:33:28,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:28,440 INFO L87 Difference]: Start difference. First operand 72850 states and 79071 transitions. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:33:30,737 INFO L93 Difference]: Finished difference Result 148703 states and 161282 transitions. [2024-10-13 23:33:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:33:30,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 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 630 [2024-10-13 23:33:30,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:33:30,807 INFO L225 Difference]: With dead ends: 148703 [2024-10-13 23:33:30,808 INFO L226 Difference]: Without dead ends: 76605 [2024-10-13 23:33:30,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:30,847 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 734 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 2813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:33:30,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 283 Invalid, 2813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-13 23:33:30,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76605 states. [2024-10-13 23:33:31,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76605 to 72099. [2024-10-13 23:33:31,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72099 states, 72098 states have (on average 1.0819301506283114) internal successors, (78005), 72098 states have internal predecessors, (78005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72099 states to 72099 states and 78005 transitions. [2024-10-13 23:33:31,722 INFO L78 Accepts]: Start accepts. Automaton has 72099 states and 78005 transitions. Word has length 630 [2024-10-13 23:33:31,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:33:31,722 INFO L471 AbstractCegarLoop]: Abstraction has 72099 states and 78005 transitions. [2024-10-13 23:33:31,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 72099 states and 78005 transitions. [2024-10-13 23:33:31,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2024-10-13 23:33:31,739 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:33:31,739 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:33:31,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 23:33:31,740 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:33:31,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:33:31,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1668445285, now seen corresponding path program 1 times [2024-10-13 23:33:31,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:33:31,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192232008] [2024-10-13 23:33:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:31,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:33:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:32,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 880 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-10-13 23:33:32,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:33:32,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192232008] [2024-10-13 23:33:32,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192232008] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:33:32,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:33:32,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:33:32,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725293563] [2024-10-13 23:33:32,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:33:32,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:33:32,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:33:32,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:33:32,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:32,045 INFO L87 Difference]: Start difference. First operand 72099 states and 78005 transitions. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:34,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:33:34,742 INFO L93 Difference]: Finished difference Result 184000 states and 200161 transitions. [2024-10-13 23:33:34,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:33:34,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 641 [2024-10-13 23:33:34,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:33:34,866 INFO L225 Difference]: With dead ends: 184000 [2024-10-13 23:33:34,866 INFO L226 Difference]: Without dead ends: 112653 [2024-10-13 23:33:34,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:34,905 INFO L432 NwaCegarLoop]: 434 mSDtfsCounter, 709 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:33:34,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 440 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-13 23:33:34,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112653 states. [2024-10-13 23:33:35,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112653 to 108898. [2024-10-13 23:33:35,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108898 states, 108897 states have (on average 1.078835964259805) internal successors, (117482), 108897 states have internal predecessors, (117482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:35,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108898 states to 108898 states and 117482 transitions. [2024-10-13 23:33:35,964 INFO L78 Accepts]: Start accepts. Automaton has 108898 states and 117482 transitions. Word has length 641 [2024-10-13 23:33:35,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:33:35,964 INFO L471 AbstractCegarLoop]: Abstraction has 108898 states and 117482 transitions. [2024-10-13 23:33:35,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:35,964 INFO L276 IsEmpty]: Start isEmpty. Operand 108898 states and 117482 transitions. [2024-10-13 23:33:35,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2024-10-13 23:33:35,981 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:33:35,981 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:33:35,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 23:33:35,981 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:33:35,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:33:35,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1897937690, now seen corresponding path program 1 times [2024-10-13 23:33:35,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:33:35,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633251545] [2024-10-13 23:33:35,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:35,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:33:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 431 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:33:37,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:33:37,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633251545] [2024-10-13 23:33:37,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633251545] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:33:37,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441659835] [2024-10-13 23:33:37,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:37,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:33:37,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:33:37,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:33:37,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 23:33:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:37,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:33:37,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:33:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-10-13 23:33:38,619 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:33:38,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441659835] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:33:38,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:33:38,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-13 23:33:38,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128383269] [2024-10-13 23:33:38,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:33:38,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:33:38,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:33:38,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:33:38,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-13 23:33:38,622 INFO L87 Difference]: Start difference. First operand 108898 states and 117482 transitions. Second operand has 4 states, 4 states have (on average 98.25) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:42,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:33:42,796 INFO L93 Difference]: Finished difference Result 333451 states and 361095 transitions. [2024-10-13 23:33:42,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:33:42,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 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 652 [2024-10-13 23:33:42,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:33:43,031 INFO L225 Difference]: With dead ends: 333451 [2024-10-13 23:33:43,031 INFO L226 Difference]: Without dead ends: 225305 [2024-10-13 23:33:43,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-13 23:33:43,227 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1593 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4681 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 5329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 4681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:33:43,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 27 Invalid, 5329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [648 Valid, 4681 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-13 23:33:43,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225305 states. [2024-10-13 23:33:45,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225305 to 205026. [2024-10-13 23:33:45,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205026 states, 205025 states have (on average 1.081741251066943) internal successors, (221784), 205025 states have internal predecessors, (221784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:45,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205026 states to 205026 states and 221784 transitions. [2024-10-13 23:33:45,691 INFO L78 Accepts]: Start accepts. Automaton has 205026 states and 221784 transitions. Word has length 652 [2024-10-13 23:33:45,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:33:45,691 INFO L471 AbstractCegarLoop]: Abstraction has 205026 states and 221784 transitions. [2024-10-13 23:33:45,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:45,692 INFO L276 IsEmpty]: Start isEmpty. Operand 205026 states and 221784 transitions. [2024-10-13 23:33:45,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2024-10-13 23:33:45,709 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:33:45,709 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 23:33:45,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 23:33:45,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 23:33:45,910 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:33:45,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:33:45,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1486164520, now seen corresponding path program 1 times [2024-10-13 23:33:45,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:33:45,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171410181] [2024-10-13 23:33:45,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:45,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:33:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 697 proven. 333 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-13 23:33:46,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:33:46,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171410181] [2024-10-13 23:33:46,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171410181] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:33:46,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60845594] [2024-10-13 23:33:46,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:46,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:33:46,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:33:46,667 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:33:46,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 23:33:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:46,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:33:46,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:33:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 656 proven. 0 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2024-10-13 23:33:47,079 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:33:47,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60845594] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:33:47,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:33:47,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-13 23:33:47,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045859680] [2024-10-13 23:33:47,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:33:47,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:33:47,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:33:47,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:33:47,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:33:47,081 INFO L87 Difference]: Start difference. First operand 205026 states and 221784 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:49,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:33:49,905 INFO L93 Difference]: Finished difference Result 397284 states and 430948 transitions. [2024-10-13 23:33:49,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:33:49,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 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 668 [2024-10-13 23:33:49,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:33:50,166 INFO L225 Difference]: With dead ends: 397284 [2024-10-13 23:33:50,167 INFO L226 Difference]: Without dead ends: 223801 [2024-10-13 23:33:50,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:33:50,256 INFO L432 NwaCegarLoop]: 1107 mSDtfsCounter, 697 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:33:50,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 1114 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-13 23:33:50,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223801 states. [2024-10-13 23:33:52,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223801 to 190006. [2024-10-13 23:33:52,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190006 states, 190005 states have (on average 1.0817978474250678) internal successors, (205547), 190005 states have internal predecessors, (205547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190006 states to 190006 states and 205547 transitions. [2024-10-13 23:33:52,643 INFO L78 Accepts]: Start accepts. Automaton has 190006 states and 205547 transitions. Word has length 668 [2024-10-13 23:33:52,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:33:52,991 INFO L471 AbstractCegarLoop]: Abstraction has 190006 states and 205547 transitions. [2024-10-13 23:33:52,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:52,992 INFO L276 IsEmpty]: Start isEmpty. Operand 190006 states and 205547 transitions. [2024-10-13 23:33:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2024-10-13 23:33:53,068 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:33:53,069 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:33:53,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 23:33:53,269 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,SelfDestructingSolverStorable16 [2024-10-13 23:33:53,270 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:33:53,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:33:53,270 INFO L85 PathProgramCache]: Analyzing trace with hash -926679196, now seen corresponding path program 1 times [2024-10-13 23:33:53,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:33:53,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883590753] [2024-10-13 23:33:53,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:53,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:33:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:33:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 718 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-10-13 23:33:53,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:33:53,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883590753] [2024-10-13 23:33:53,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883590753] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:33:53,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:33:53,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:33:53,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227674155] [2024-10-13 23:33:53,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:33:53,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:33:53,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:33:53,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:33:53,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:53,631 INFO L87 Difference]: Start difference. First operand 190006 states and 205547 transitions. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:56,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:33:56,437 INFO L93 Difference]: Finished difference Result 431079 states and 468901 transitions. [2024-10-13 23:33:56,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:33:56,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 829 [2024-10-13 23:33:56,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:33:56,722 INFO L225 Difference]: With dead ends: 431079 [2024-10-13 23:33:56,722 INFO L226 Difference]: Without dead ends: 241825 [2024-10-13 23:33:56,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:33:56,813 INFO L432 NwaCegarLoop]: 1247 mSDtfsCounter, 668 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2201 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:33:56,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 1254 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2201 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-13 23:33:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241825 states. [2024-10-13 23:33:59,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241825 to 235817. [2024-10-13 23:33:59,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235817 states, 235816 states have (on average 1.073137530956339) internal successors, (253063), 235816 states have internal predecessors, (253063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:59,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235817 states to 235817 states and 253063 transitions. [2024-10-13 23:33:59,806 INFO L78 Accepts]: Start accepts. Automaton has 235817 states and 253063 transitions. Word has length 829 [2024-10-13 23:33:59,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:33:59,806 INFO L471 AbstractCegarLoop]: Abstraction has 235817 states and 253063 transitions. [2024-10-13 23:33:59,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:33:59,807 INFO L276 IsEmpty]: Start isEmpty. Operand 235817 states and 253063 transitions. [2024-10-13 23:33:59,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2024-10-13 23:33:59,849 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:33:59,849 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:33:59,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 23:33:59,849 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:33:59,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:33:59,850 INFO L85 PathProgramCache]: Analyzing trace with hash -207649596, now seen corresponding path program 1 times [2024-10-13 23:33:59,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:33:59,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913475400] [2024-10-13 23:33:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:33:59,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:33:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:34:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 628 proven. 229 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-10-13 23:34:00,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:34:00,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913475400] [2024-10-13 23:34:00,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913475400] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:34:00,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971452660] [2024-10-13 23:34:00,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:34:00,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:34:00,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:34:00,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:34:00,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 23:34:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:34:00,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:34:00,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:34:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 816 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-10-13 23:34:01,272 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:34:01,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971452660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:34:01,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:34:01,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-13 23:34:01,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839382165] [2024-10-13 23:34:01,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:34:01,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:34:01,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:34:01,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:34:01,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:34:01,276 INFO L87 Difference]: Start difference. First operand 235817 states and 253063 transitions. Second operand has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:34:04,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:34:04,476 INFO L93 Difference]: Finished difference Result 539972 states and 578741 transitions. [2024-10-13 23:34:04,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:34:04,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 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 893 [2024-10-13 23:34:04,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:34:04,479 INFO L225 Difference]: With dead ends: 539972 [2024-10-13 23:34:04,479 INFO L226 Difference]: Without dead ends: 0 [2024-10-13 23:34:04,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 893 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:34:04,640 INFO L432 NwaCegarLoop]: 943 mSDtfsCounter, 609 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:34:04,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 949 Invalid, 2874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-13 23:34:04,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-13 23:34:04,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-13 23:34:04,641 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) [2024-10-13 23:34:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-13 23:34:04,642 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 893 [2024-10-13 23:34:04,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:34:04,642 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 23:34:04,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:34:04,643 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-13 23:34:04,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-13 23:34:04,645 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-13 23:34:04,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 23:34:04,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:34:04,848 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] [2024-10-13 23:34:04,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.