./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/Problem03_label40.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/Problem03_label40.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 50a84ef689ee1e06fdacd72e7701ff2c38527734cebc573231d698f970fe37fd --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 22:47:41,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 22:47:41,182 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 22:47:41,188 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 22:47:41,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 22:47:41,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 22:47:41,236 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 22:47:41,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 22:47:41,237 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 22:47:41,238 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 22:47:41,238 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 22:47:41,239 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 22:47:41,239 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 22:47:41,240 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 22:47:41,241 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 22:47:41,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 22:47:41,242 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 22:47:41,243 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 22:47:41,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 22:47:41,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 22:47:41,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 22:47:41,248 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 22:47:41,248 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 22:47:41,248 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 22:47:41,249 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 22:47:41,249 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 22:47:41,249 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 22:47:41,249 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 22:47:41,250 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 22:47:41,250 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 22:47:41,250 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 22:47:41,251 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 22:47:41,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:47:41,251 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 22:47:41,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 22:47:41,252 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 22:47:41,252 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 22:47:41,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 22:47:41,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 22:47:41,253 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 22:47:41,253 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 22:47:41,253 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 22:47:41,254 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50a84ef689ee1e06fdacd72e7701ff2c38527734cebc573231d698f970fe37fd [2024-10-13 22:47:41,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 22:47:41,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 22:47:41,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 22:47:41,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 22:47:41,540 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 22:47:41,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label40.c [2024-10-13 22:47:42,961 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 22:47:43,262 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 22:47:43,263 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label40.c [2024-10-13 22:47:43,285 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a5b00a6f/74d508ec718449e0b1ce5bdfc9665b12/FLAG76ea75f4a [2024-10-13 22:47:43,530 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a5b00a6f/74d508ec718449e0b1ce5bdfc9665b12 [2024-10-13 22:47:43,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 22:47:43,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 22:47:43,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 22:47:43,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 22:47:43,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 22:47:43,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:47:43" (1/1) ... [2024-10-13 22:47:43,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9cfc4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:47:43, skipping insertion in model container [2024-10-13 22:47:43,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:47:43" (1/1) ... [2024-10-13 22:47:43,618 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 22:47:44,126 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/Problem03_label40.c[59070,59083] [2024-10-13 22:47:44,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:47:44,182 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 22:47:44,380 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/Problem03_label40.c[59070,59083] [2024-10-13 22:47:44,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:47:44,442 INFO L204 MainTranslator]: Completed translation [2024-10-13 22:47:44,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:47:44 WrapperNode [2024-10-13 22:47:44,444 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 22:47:44,445 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 22:47:44,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 22:47:44,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 22:47:44,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:47:44" (1/1) ... [2024-10-13 22:47:44,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:47:44" (1/1) ... [2024-10-13 22:47:44,593 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-10-13 22:47:44,593 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 22:47:44,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 22:47:44,594 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 22:47:44,595 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 22:47:44,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:47:44" (1/1) ... [2024-10-13 22:47:44,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:47:44" (1/1) ... [2024-10-13 22:47:44,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:47:44" (1/1) ... [2024-10-13 22:47:44,668 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 22:47:44,668 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:47:44" (1/1) ... [2024-10-13 22:47:44,668 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:47:44" (1/1) ... [2024-10-13 22:47:44,702 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:47:44" (1/1) ... [2024-10-13 22:47:44,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:47:44" (1/1) ... [2024-10-13 22:47:44,742 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:47:44" (1/1) ... [2024-10-13 22:47:44,749 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:47:44" (1/1) ... [2024-10-13 22:47:44,765 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 22:47:44,767 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 22:47:44,767 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 22:47:44,767 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 22:47:44,768 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:47:44" (1/1) ... [2024-10-13 22:47:44,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:47:44,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:47:44,803 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 22:47:44,809 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 22:47:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 22:47:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 22:47:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 22:47:44,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 22:47:44,940 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 22:47:44,942 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 22:47:46,705 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-10-13 22:47:46,705 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 22:47:46,768 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 22:47:46,769 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 22:47:46,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:47:46 BoogieIcfgContainer [2024-10-13 22:47:46,769 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 22:47:46,771 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 22:47:46,771 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 22:47:46,775 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 22:47:46,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:47:43" (1/3) ... [2024-10-13 22:47:46,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d62519d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:47:46, skipping insertion in model container [2024-10-13 22:47:46,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:47:44" (2/3) ... [2024-10-13 22:47:46,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d62519d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:47:46, skipping insertion in model container [2024-10-13 22:47:46,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:47:46" (3/3) ... [2024-10-13 22:47:46,777 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label40.c [2024-10-13 22:47:46,793 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 22:47:46,793 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 22:47:46,884 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 22:47:46,893 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;@36a023b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 22:47:46,894 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 22:47:46,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states 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 22:47:46,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-10-13 22:47:46,920 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:47:46,921 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:46,922 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:47:46,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:47:46,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1716274667, now seen corresponding path program 1 times [2024-10-13 22:47:46,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:47:46,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352123975] [2024-10-13 22:47:46,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:47:46,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:47:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:47:47,561 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 22:47:47,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:47:47,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352123975] [2024-10-13 22:47:47,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352123975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:47:47,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:47:47,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:47:47,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876953794] [2024-10-13 22:47:47,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:47:47,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 22:47:47,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:47:47,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 22:47:47,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 22:47:47,595 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 91.5) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 22:47:47,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:47:47,640 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2024-10-13 22:47:47,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 22:47:47,647 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 91.5) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 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 183 [2024-10-13 22:47:47,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:47:47,658 INFO L225 Difference]: With dead ends: 479 [2024-10-13 22:47:47,658 INFO L226 Difference]: Without dead ends: 238 [2024-10-13 22:47:47,661 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 22:47:47,664 INFO L432 NwaCegarLoop]: 392 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, 392 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 22:47:47,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:47:47,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-13 22:47:47,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-10-13 22:47:47,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:47:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2024-10-13 22:47:47,719 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 183 [2024-10-13 22:47:47,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:47:47,720 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2024-10-13 22:47:47,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 91.5) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 22:47:47,721 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2024-10-13 22:47:47,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-10-13 22:47:47,724 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:47:47,724 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:47,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 22:47:47,724 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:47:47,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:47:47,725 INFO L85 PathProgramCache]: Analyzing trace with hash -549172672, now seen corresponding path program 1 times [2024-10-13 22:47:47,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:47:47,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961649204] [2024-10-13 22:47:47,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:47:47,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:47:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:47:48,345 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 22:47:48,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:47:48,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961649204] [2024-10-13 22:47:48,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961649204] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:47:48,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:47:48,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:47:48,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376675045] [2024-10-13 22:47:48,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:47:48,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:47:48,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:47:48,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:47:48,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:47:48,354 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 22:47:49,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:47:49,291 INFO L93 Difference]: Finished difference Result 696 states and 1149 transitions. [2024-10-13 22:47:49,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:47:49,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 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 183 [2024-10-13 22:47:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:47:49,296 INFO L225 Difference]: With dead ends: 696 [2024-10-13 22:47:49,296 INFO L226 Difference]: Without dead ends: 459 [2024-10-13 22:47:49,297 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 22:47:49,299 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 80 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-13 22:47:49,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 137 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-13 22:47:49,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-10-13 22:47:49,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 458. [2024-10-13 22:47:49,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 1.5514223194748358) internal successors, (709), 457 states have internal predecessors, (709), 0 states have call successors, (0), 0 states 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 22:47:49,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 709 transitions. [2024-10-13 22:47:49,323 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 709 transitions. Word has length 183 [2024-10-13 22:47:49,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:47:49,324 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 709 transitions. [2024-10-13 22:47:49,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 22:47:49,325 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 709 transitions. [2024-10-13 22:47:49,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-10-13 22:47:49,328 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:47:49,328 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:47:49,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 22:47:49,329 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:47:49,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:47:49,330 INFO L85 PathProgramCache]: Analyzing trace with hash 14149524, now seen corresponding path program 1 times [2024-10-13 22:47:49,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:47:49,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365808219] [2024-10-13 22:47:49,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:47:49,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:47:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:47:49,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:47:49,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:47:49,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365808219] [2024-10-13 22:47:49,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365808219] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:47:49,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:47:49,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:47:49,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469486385] [2024-10-13 22:47:49,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:47:49,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:47:49,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:47:49,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:47:49,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:47:49,735 INFO L87 Difference]: Start difference. First operand 458 states and 709 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 22:47:50,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:47:50,502 INFO L93 Difference]: Finished difference Result 1341 states and 2081 transitions. [2024-10-13 22:47:50,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:47:50,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2024-10-13 22:47:50,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:47:50,507 INFO L225 Difference]: With dead ends: 1341 [2024-10-13 22:47:50,507 INFO L226 Difference]: Without dead ends: 884 [2024-10-13 22:47:50,509 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 22:47:50,510 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 251 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 22:47:50,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 179 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 22:47:50,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2024-10-13 22:47:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 879. [2024-10-13 22:47:50,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 878 states have (on average 1.469248291571754) internal successors, (1290), 878 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states 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 22:47:50,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1290 transitions. [2024-10-13 22:47:50,547 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1290 transitions. Word has length 188 [2024-10-13 22:47:50,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:47:50,548 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1290 transitions. [2024-10-13 22:47:50,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 22:47:50,551 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1290 transitions. [2024-10-13 22:47:50,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-10-13 22:47:50,559 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:47:50,559 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-13 22:47:50,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 22:47:50,560 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:47:50,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:47:50,560 INFO L85 PathProgramCache]: Analyzing trace with hash 2106833119, now seen corresponding path program 1 times [2024-10-13 22:47:50,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:47:50,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770958191] [2024-10-13 22:47:50,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:47:50,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:47:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:47:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:47:50,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:47:50,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770958191] [2024-10-13 22:47:50,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770958191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:47:50,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:47:50,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:47:50,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089925355] [2024-10-13 22:47:50,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:47:50,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:47:50,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:47:50,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:47:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:47:50,746 INFO L87 Difference]: Start difference. First operand 879 states and 1290 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 22:47:51,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:47:51,565 INFO L93 Difference]: Finished difference Result 2593 states and 3821 transitions. [2024-10-13 22:47:51,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:47:51,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2024-10-13 22:47:51,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:47:51,572 INFO L225 Difference]: With dead ends: 2593 [2024-10-13 22:47:51,572 INFO L226 Difference]: Without dead ends: 1715 [2024-10-13 22:47:51,574 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 22:47:51,575 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 22:47:51,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 88 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 22:47:51,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2024-10-13 22:47:51,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1695. [2024-10-13 22:47:51,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1694 states have (on average 1.4397874852420307) internal successors, (2439), 1694 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states 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 22:47:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2439 transitions. [2024-10-13 22:47:51,612 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2439 transitions. Word has length 191 [2024-10-13 22:47:51,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:47:51,612 INFO L471 AbstractCegarLoop]: Abstraction has 1695 states and 2439 transitions. [2024-10-13 22:47:51,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 22:47:51,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2439 transitions. [2024-10-13 22:47:51,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-10-13 22:47:51,617 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:47:51,617 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:51,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 22:47:51,618 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:47:51,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:47:51,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1832015758, now seen corresponding path program 1 times [2024-10-13 22:47:51,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:47:51,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722817041] [2024-10-13 22:47:51,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:47:51,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:47:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:47:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 22:47:52,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:47:52,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722817041] [2024-10-13 22:47:52,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722817041] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:47:52,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:47:52,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 22:47:52,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977119764] [2024-10-13 22:47:52,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:47:52,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:47:52,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:47:52,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:47:52,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:47:52,236 INFO L87 Difference]: Start difference. First operand 1695 states and 2439 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 22:47:53,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:47:53,216 INFO L93 Difference]: Finished difference Result 3530 states and 5129 transitions. [2024-10-13 22:47:53,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:47:53,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 198 [2024-10-13 22:47:53,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:47:53,223 INFO L225 Difference]: With dead ends: 3530 [2024-10-13 22:47:53,223 INFO L226 Difference]: Without dead ends: 1662 [2024-10-13 22:47:53,225 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 22:47:53,226 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 331 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-13 22:47:53,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 44 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-13 22:47:53,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2024-10-13 22:47:53,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1662. [2024-10-13 22:47:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1661 states have (on average 1.3257074051776039) internal successors, (2202), 1661 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states 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 22:47:53,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2202 transitions. [2024-10-13 22:47:53,255 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2202 transitions. Word has length 198 [2024-10-13 22:47:53,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:47:53,256 INFO L471 AbstractCegarLoop]: Abstraction has 1662 states and 2202 transitions. [2024-10-13 22:47:53,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 22:47:53,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2202 transitions. [2024-10-13 22:47:53,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-10-13 22:47:53,260 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:47:53,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:53,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 22:47:53,262 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:47:53,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:47:53,263 INFO L85 PathProgramCache]: Analyzing trace with hash 485040659, now seen corresponding path program 1 times [2024-10-13 22:47:53,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:47:53,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185999702] [2024-10-13 22:47:53,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:47:53,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:47:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:47:53,905 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:47:53,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:47:53,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185999702] [2024-10-13 22:47:53,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185999702] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:47:53,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:47:53,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 22:47:53,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574845616] [2024-10-13 22:47:53,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:47:53,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:47:53,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:47:53,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:47:53,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:47:53,908 INFO L87 Difference]: Start difference. First operand 1662 states and 2202 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 22:47:55,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:47:55,041 INFO L93 Difference]: Finished difference Result 4322 states and 5742 transitions. [2024-10-13 22:47:55,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:47:55,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2024-10-13 22:47:55,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:47:55,053 INFO L225 Difference]: With dead ends: 4322 [2024-10-13 22:47:55,054 INFO L226 Difference]: Without dead ends: 2487 [2024-10-13 22:47:55,056 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 22:47:55,057 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 193 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:47:55,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 97 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-13 22:47:55,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2487 states. [2024-10-13 22:47:55,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2487 to 2486. [2024-10-13 22:47:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2485 states have (on average 1.3086519114688129) internal successors, (3252), 2485 states have internal predecessors, (3252), 0 states have call successors, (0), 0 states 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 22:47:55,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3252 transitions. [2024-10-13 22:47:55,099 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3252 transitions. Word has length 214 [2024-10-13 22:47:55,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:47:55,102 INFO L471 AbstractCegarLoop]: Abstraction has 2486 states and 3252 transitions. [2024-10-13 22:47:55,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 22:47:55,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3252 transitions. [2024-10-13 22:47:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-10-13 22:47:55,107 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:47:55,108 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:55,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 22:47:55,108 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:47:55,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:47:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1555282194, now seen corresponding path program 1 times [2024-10-13 22:47:55,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:47:55,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515728630] [2024-10-13 22:47:55,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:47:55,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:47:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:47:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 22:47:55,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:47:55,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515728630] [2024-10-13 22:47:55,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515728630] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:47:55,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:47:55,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:47:55,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031726400] [2024-10-13 22:47:55,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:47:55,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:47:55,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:47:55,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:47:55,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:47:55,464 INFO L87 Difference]: Start difference. First operand 2486 states and 3252 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:47:56,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:47:56,191 INFO L93 Difference]: Finished difference Result 7430 states and 9725 transitions. [2024-10-13 22:47:56,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:47:56,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-10-13 22:47:56,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:47:56,206 INFO L225 Difference]: With dead ends: 7430 [2024-10-13 22:47:56,207 INFO L226 Difference]: Without dead ends: 4945 [2024-10-13 22:47:56,210 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 22:47:56,210 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 204 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 22:47:56,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 61 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 22:47:56,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4945 states. [2024-10-13 22:47:56,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4945 to 4936. [2024-10-13 22:47:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4936 states, 4935 states have (on average 1.2873353596757853) internal successors, (6353), 4935 states have internal predecessors, (6353), 0 states have call successors, (0), 0 states 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 22:47:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4936 states to 4936 states and 6353 transitions. [2024-10-13 22:47:56,293 INFO L78 Accepts]: Start accepts. Automaton has 4936 states and 6353 transitions. Word has length 216 [2024-10-13 22:47:56,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:47:56,294 INFO L471 AbstractCegarLoop]: Abstraction has 4936 states and 6353 transitions. [2024-10-13 22:47:56,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:47:56,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4936 states and 6353 transitions. [2024-10-13 22:47:56,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-10-13 22:47:56,304 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:47:56,304 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:56,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 22:47:56,305 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:47:56,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:47:56,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1860763324, now seen corresponding path program 1 times [2024-10-13 22:47:56,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:47:56,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640916577] [2024-10-13 22:47:56,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:47:56,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:47:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:47:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-13 22:47:56,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:47:56,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640916577] [2024-10-13 22:47:56,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640916577] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:47:56,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973033612] [2024-10-13 22:47:56,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:47:56,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:47:56,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:47:56,711 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 22:47:56,712 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 22:47:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:47:56,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 22:47:56,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:47:57,014 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-13 22:47:57,015 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:47:57,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973033612] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:47:57,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:47:57,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-13 22:47:57,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214918333] [2024-10-13 22:47:57,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:47:57,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:47:57,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:47:57,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:47:57,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:47:57,018 INFO L87 Difference]: Start difference. First operand 4936 states and 6353 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 22:47:57,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:47:57,237 INFO L93 Difference]: Finished difference Result 14804 states and 19055 transitions. [2024-10-13 22:47:57,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:47:57,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 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 232 [2024-10-13 22:47:57,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:47:57,265 INFO L225 Difference]: With dead ends: 14804 [2024-10-13 22:47:57,265 INFO L226 Difference]: Without dead ends: 9869 [2024-10-13 22:47:57,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:47:57,275 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 268 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:47:57,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 505 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:47:57,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9869 states. [2024-10-13 22:47:57,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9869 to 9867. [2024-10-13 22:47:57,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9867 states, 9866 states have (on average 1.2840056760591931) internal successors, (12668), 9866 states have internal predecessors, (12668), 0 states have call successors, (0), 0 states 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 22:47:57,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9867 states to 9867 states and 12668 transitions. [2024-10-13 22:47:57,449 INFO L78 Accepts]: Start accepts. Automaton has 9867 states and 12668 transitions. Word has length 232 [2024-10-13 22:47:57,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:47:57,450 INFO L471 AbstractCegarLoop]: Abstraction has 9867 states and 12668 transitions. [2024-10-13 22:47:57,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 22:47:57,450 INFO L276 IsEmpty]: Start isEmpty. Operand 9867 states and 12668 transitions. [2024-10-13 22:47:57,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-10-13 22:47:57,466 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:47:57,467 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:57,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 22:47:57,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:47:57,672 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:47:57,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:47:57,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1823279507, now seen corresponding path program 1 times [2024-10-13 22:47:57,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:47:57,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125353802] [2024-10-13 22:47:57,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:47:57,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:47:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:47:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 62 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-13 22:47:58,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:47:58,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125353802] [2024-10-13 22:47:58,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125353802] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:47:58,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533264350] [2024-10-13 22:47:58,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:47:58,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:47:58,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:47:58,143 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 22:47:58,145 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 22:47:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:47:58,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 22:47:58,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:47:58,555 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-13 22:47:58,555 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:47:58,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533264350] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:47:58,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:47:58,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-13 22:47:58,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016322268] [2024-10-13 22:47:58,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:47:58,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:47:58,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:47:58,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:47:58,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:47:58,557 INFO L87 Difference]: Start difference. First operand 9867 states and 12668 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 22:47:59,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:47:59,228 INFO L93 Difference]: Finished difference Result 24678 states and 31788 transitions. [2024-10-13 22:47:59,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:47:59,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 240 [2024-10-13 22:47:59,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:47:59,263 INFO L225 Difference]: With dead ends: 24678 [2024-10-13 22:47:59,263 INFO L226 Difference]: Without dead ends: 14812 [2024-10-13 22:47:59,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:47:59,280 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 73 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 22:47:59,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 104 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 22:47:59,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14812 states. [2024-10-13 22:47:59,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14812 to 14800. [2024-10-13 22:47:59,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14800 states, 14799 states have (on average 1.262044732752213) internal successors, (18677), 14799 states have internal predecessors, (18677), 0 states have call successors, (0), 0 states 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 22:47:59,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14800 states to 14800 states and 18677 transitions. [2024-10-13 22:47:59,605 INFO L78 Accepts]: Start accepts. Automaton has 14800 states and 18677 transitions. Word has length 240 [2024-10-13 22:47:59,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:47:59,606 INFO L471 AbstractCegarLoop]: Abstraction has 14800 states and 18677 transitions. [2024-10-13 22:47:59,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 22:47:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 14800 states and 18677 transitions. [2024-10-13 22:47:59,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-10-13 22:47:59,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:47:59,632 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:59,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 22:47:59,832 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,SelfDestructingSolverStorable8 [2024-10-13 22:47:59,833 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:47:59,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:47:59,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1135006900, now seen corresponding path program 1 times [2024-10-13 22:47:59,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:47:59,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425098034] [2024-10-13 22:47:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:47:59,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:47:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-13 22:48:00,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:00,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425098034] [2024-10-13 22:48:00,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425098034] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:00,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:00,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:48:00,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668846398] [2024-10-13 22:48:00,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:00,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:00,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:00,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:00,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:00,271 INFO L87 Difference]: Start difference. First operand 14800 states and 18677 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:48:00,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:00,916 INFO L93 Difference]: Finished difference Result 44215 states and 55777 transitions. [2024-10-13 22:48:00,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:00,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2024-10-13 22:48:00,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:00,970 INFO L225 Difference]: With dead ends: 44215 [2024-10-13 22:48:00,971 INFO L226 Difference]: Without dead ends: 29416 [2024-10-13 22:48:00,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:00,992 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 204 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:00,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 125 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 22:48:01,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29416 states. [2024-10-13 22:48:01,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29416 to 29416. [2024-10-13 22:48:01,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29416 states, 29415 states have (on average 1.169437361890192) internal successors, (34399), 29415 states have internal predecessors, (34399), 0 states have call successors, (0), 0 states 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 22:48:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29416 states to 29416 states and 34399 transitions. [2024-10-13 22:48:01,539 INFO L78 Accepts]: Start accepts. Automaton has 29416 states and 34399 transitions. Word has length 243 [2024-10-13 22:48:01,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:01,539 INFO L471 AbstractCegarLoop]: Abstraction has 29416 states and 34399 transitions. [2024-10-13 22:48:01,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:48:01,540 INFO L276 IsEmpty]: Start isEmpty. Operand 29416 states and 34399 transitions. [2024-10-13 22:48:01,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-10-13 22:48:01,573 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:01,574 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:01,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 22:48:01,575 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:01,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:01,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1791804573, now seen corresponding path program 1 times [2024-10-13 22:48:01,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:01,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304967574] [2024-10-13 22:48:01,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:01,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 66 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-13 22:48:02,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:02,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304967574] [2024-10-13 22:48:02,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304967574] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:48:02,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769737563] [2024-10-13 22:48:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:02,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:48:02,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:48:02,134 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 22:48:02,135 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 22:48:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:02,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 22:48:02,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:48:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-13 22:48:02,403 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:48:02,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769737563] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:02,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:48:02,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-13 22:48:02,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592782116] [2024-10-13 22:48:02,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:02,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:02,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:02,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:02,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:48:02,405 INFO L87 Difference]: Start difference. First operand 29416 states and 34399 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 22:48:03,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:03,090 INFO L93 Difference]: Finished difference Result 55818 states and 65587 transitions. [2024-10-13 22:48:03,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:03,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 244 [2024-10-13 22:48:03,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:03,129 INFO L225 Difference]: With dead ends: 55818 [2024-10-13 22:48:03,129 INFO L226 Difference]: Without dead ends: 26403 [2024-10-13 22:48:03,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:48:03,157 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 191 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:03,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 284 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 22:48:03,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26403 states. [2024-10-13 22:48:03,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26403 to 26371. [2024-10-13 22:48:03,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26371 states, 26370 states have (on average 1.1672734167614713) internal successors, (30781), 26370 states have internal predecessors, (30781), 0 states have call successors, (0), 0 states 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 22:48:03,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26371 states to 26371 states and 30781 transitions. [2024-10-13 22:48:03,500 INFO L78 Accepts]: Start accepts. Automaton has 26371 states and 30781 transitions. Word has length 244 [2024-10-13 22:48:03,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:03,501 INFO L471 AbstractCegarLoop]: Abstraction has 26371 states and 30781 transitions. [2024-10-13 22:48:03,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 22:48:03,501 INFO L276 IsEmpty]: Start isEmpty. Operand 26371 states and 30781 transitions. [2024-10-13 22:48:03,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-10-13 22:48:03,535 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:03,536 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:03,554 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 22:48:03,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:48:03,737 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:03,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:03,737 INFO L85 PathProgramCache]: Analyzing trace with hash 679543840, now seen corresponding path program 1 times [2024-10-13 22:48:03,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:03,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923876748] [2024-10-13 22:48:03,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:03,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:04,192 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-13 22:48:04,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:04,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923876748] [2024-10-13 22:48:04,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923876748] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:48:04,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133412855] [2024-10-13 22:48:04,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:04,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:48:04,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:48:04,195 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:48:04,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 22:48:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:04,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 22:48:04,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:48:04,407 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 22:48:04,408 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:48:04,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133412855] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:04,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:48:04,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-13 22:48:04,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560324696] [2024-10-13 22:48:04,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:04,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:04,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:04,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:48:04,412 INFO L87 Difference]: Start difference. First operand 26371 states and 30781 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 22:48:05,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:05,224 INFO L93 Difference]: Finished difference Result 63711 states and 75537 transitions. [2024-10-13 22:48:05,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:05,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 253 [2024-10-13 22:48:05,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:05,276 INFO L225 Difference]: With dead ends: 63711 [2024-10-13 22:48:05,277 INFO L226 Difference]: Without dead ends: 37341 [2024-10-13 22:48:05,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:48:05,303 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 185 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:05,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 330 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 22:48:05,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37341 states. [2024-10-13 22:48:05,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37341 to 37333. [2024-10-13 22:48:05,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37333 states, 37332 states have (on average 1.1299957141326475) internal successors, (42185), 37332 states have internal predecessors, (42185), 0 states have call successors, (0), 0 states 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 22:48:05,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37333 states to 37333 states and 42185 transitions. [2024-10-13 22:48:05,754 INFO L78 Accepts]: Start accepts. Automaton has 37333 states and 42185 transitions. Word has length 253 [2024-10-13 22:48:05,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:05,754 INFO L471 AbstractCegarLoop]: Abstraction has 37333 states and 42185 transitions. [2024-10-13 22:48:05,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 22:48:05,755 INFO L276 IsEmpty]: Start isEmpty. Operand 37333 states and 42185 transitions. [2024-10-13 22:48:05,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-10-13 22:48:05,785 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:05,788 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:05,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 22:48:05,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:48:05,992 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:05,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:05,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1071987718, now seen corresponding path program 1 times [2024-10-13 22:48:05,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:05,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098195248] [2024-10-13 22:48:05,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:05,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:06,545 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-10-13 22:48:06,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:06,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098195248] [2024-10-13 22:48:06,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098195248] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:48:06,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074040441] [2024-10-13 22:48:06,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:06,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:48:06,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:48:06,548 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:48:06,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 22:48:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:06,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 22:48:06,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:48:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-13 22:48:06,828 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:48:06,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074040441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:06,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:48:06,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-13 22:48:06,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463984340] [2024-10-13 22:48:06,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:06,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:06,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:06,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:06,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:48:06,831 INFO L87 Difference]: Start difference. First operand 37333 states and 42185 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states 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 22:48:07,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:07,544 INFO L93 Difference]: Finished difference Result 73211 states and 82799 transitions. [2024-10-13 22:48:07,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:07,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 296 [2024-10-13 22:48:07,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:07,586 INFO L225 Difference]: With dead ends: 73211 [2024-10-13 22:48:07,586 INFO L226 Difference]: Without dead ends: 36285 [2024-10-13 22:48:07,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:48:07,616 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 208 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:07,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 309 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 22:48:07,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36285 states. [2024-10-13 22:48:07,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36285 to 36273. [2024-10-13 22:48:08,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36273 states, 36272 states have (on average 1.1095059550066166) internal successors, (40244), 36272 states have internal predecessors, (40244), 0 states have call successors, (0), 0 states 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 22:48:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36273 states to 36273 states and 40244 transitions. [2024-10-13 22:48:08,083 INFO L78 Accepts]: Start accepts. Automaton has 36273 states and 40244 transitions. Word has length 296 [2024-10-13 22:48:08,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:08,083 INFO L471 AbstractCegarLoop]: Abstraction has 36273 states and 40244 transitions. [2024-10-13 22:48:08,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states 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 22:48:08,084 INFO L276 IsEmpty]: Start isEmpty. Operand 36273 states and 40244 transitions. [2024-10-13 22:48:08,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-10-13 22:48:08,117 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:08,117 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:08,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 22:48:08,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-13 22:48:08,319 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:08,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:08,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1790914640, now seen corresponding path program 1 times [2024-10-13 22:48:08,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:08,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946007281] [2024-10-13 22:48:08,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:08,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 121 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:48:09,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:09,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946007281] [2024-10-13 22:48:09,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946007281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:48:09,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094775743] [2024-10-13 22:48:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:09,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:48:09,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:48:09,197 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:48:09,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 22:48:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:09,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 22:48:09,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:48:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 22:48:09,523 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:48:09,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094775743] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:09,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:48:09,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-13 22:48:09,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794146516] [2024-10-13 22:48:09,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:09,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:09,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:09,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:09,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 22:48:09,526 INFO L87 Difference]: Start difference. First operand 36273 states and 40244 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 22:48:10,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:10,175 INFO L93 Difference]: Finished difference Result 77019 states and 85887 transitions. [2024-10-13 22:48:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:10,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 313 [2024-10-13 22:48:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:10,225 INFO L225 Difference]: With dead ends: 77019 [2024-10-13 22:48:10,225 INFO L226 Difference]: Without dead ends: 41153 [2024-10-13 22:48:10,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 22:48:10,248 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 79 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:10,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 279 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 22:48:10,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41153 states. [2024-10-13 22:48:10,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41153 to 41145. [2024-10-13 22:48:10,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41145 states, 41144 states have (on average 1.1140628038110052) internal successors, (45837), 41144 states have internal predecessors, (45837), 0 states have call successors, (0), 0 states 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 22:48:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41145 states to 41145 states and 45837 transitions. [2024-10-13 22:48:10,872 INFO L78 Accepts]: Start accepts. Automaton has 41145 states and 45837 transitions. Word has length 313 [2024-10-13 22:48:10,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:10,873 INFO L471 AbstractCegarLoop]: Abstraction has 41145 states and 45837 transitions. [2024-10-13 22:48:10,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 22:48:10,873 INFO L276 IsEmpty]: Start isEmpty. Operand 41145 states and 45837 transitions. [2024-10-13 22:48:10,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-10-13 22:48:10,930 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:10,931 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:10,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 22:48:11,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:48:11,136 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:11,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:11,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1254698964, now seen corresponding path program 1 times [2024-10-13 22:48:11,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:11,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362687404] [2024-10-13 22:48:11,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:11,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-10-13 22:48:11,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:11,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362687404] [2024-10-13 22:48:11,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362687404] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:11,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:11,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:48:11,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670235692] [2024-10-13 22:48:11,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:11,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:11,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:11,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:11,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:48:11,740 INFO L87 Difference]: Start difference. First operand 41145 states and 45837 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 2 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 22:48:12,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:12,439 INFO L93 Difference]: Finished difference Result 94720 states and 105589 transitions. [2024-10-13 22:48:12,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:12,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 2 states have internal predecessors, (262), 0 states have call successors, (0), 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 22:48:12,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:12,498 INFO L225 Difference]: With dead ends: 94720 [2024-10-13 22:48:12,498 INFO L226 Difference]: Without dead ends: 53982 [2024-10-13 22:48:12,520 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 22:48:12,520 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 155 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:12,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 124 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 22:48:12,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53982 states. [2024-10-13 22:48:13,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53982 to 49474. [2024-10-13 22:48:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49474 states, 49473 states have (on average 1.1135568896165586) internal successors, (55091), 49473 states have internal predecessors, (55091), 0 states have call successors, (0), 0 states 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 22:48:13,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49474 states to 49474 states and 55091 transitions. [2024-10-13 22:48:13,175 INFO L78 Accepts]: Start accepts. Automaton has 49474 states and 55091 transitions. Word has length 383 [2024-10-13 22:48:13,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:13,175 INFO L471 AbstractCegarLoop]: Abstraction has 49474 states and 55091 transitions. [2024-10-13 22:48:13,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 2 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 22:48:13,176 INFO L276 IsEmpty]: Start isEmpty. Operand 49474 states and 55091 transitions. [2024-10-13 22:48:13,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-10-13 22:48:13,206 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:13,206 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:13,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 22:48:13,207 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:13,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:13,207 INFO L85 PathProgramCache]: Analyzing trace with hash 970273031, now seen corresponding path program 1 times [2024-10-13 22:48:13,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:13,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577414681] [2024-10-13 22:48:13,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:13,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 204 proven. 6 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2024-10-13 22:48:13,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:13,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577414681] [2024-10-13 22:48:13,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577414681] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:48:13,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886436291] [2024-10-13 22:48:13,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:13,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:48:13,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:48:13,859 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:48:13,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 22:48:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:14,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 22:48:14,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:48:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-10-13 22:48:14,213 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:48:14,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886436291] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:14,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:48:14,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-13 22:48:14,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197258401] [2024-10-13 22:48:14,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:14,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:14,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:14,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:14,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:48:14,216 INFO L87 Difference]: Start difference. First operand 49474 states and 55091 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 22:48:14,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:14,721 INFO L93 Difference]: Finished difference Result 137641 states and 153224 transitions. [2024-10-13 22:48:14,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:14,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 413 [2024-10-13 22:48:14,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:14,812 INFO L225 Difference]: With dead ends: 137641 [2024-10-13 22:48:14,813 INFO L226 Difference]: Without dead ends: 88980 [2024-10-13 22:48:14,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:48:14,851 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 227 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:14,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 495 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:48:14,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88980 states. [2024-10-13 22:48:15,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88980 to 88975. [2024-10-13 22:48:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88975 states, 88974 states have (on average 1.1118529008474385) internal successors, (98926), 88974 states have internal predecessors, (98926), 0 states have call successors, (0), 0 states 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 22:48:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88975 states to 88975 states and 98926 transitions. [2024-10-13 22:48:16,096 INFO L78 Accepts]: Start accepts. Automaton has 88975 states and 98926 transitions. Word has length 413 [2024-10-13 22:48:16,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:16,097 INFO L471 AbstractCegarLoop]: Abstraction has 88975 states and 98926 transitions. [2024-10-13 22:48:16,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 22:48:16,097 INFO L276 IsEmpty]: Start isEmpty. Operand 88975 states and 98926 transitions. [2024-10-13 22:48:16,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-10-13 22:48:16,189 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:16,189 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-10-13 22:48:16,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 22:48:16,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:48:16,390 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:16,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:16,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1245009047, now seen corresponding path program 1 times [2024-10-13 22:48:16,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:16,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512602256] [2024-10-13 22:48:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:16,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 190 proven. 6 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-10-13 22:48:17,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:17,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512602256] [2024-10-13 22:48:17,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512602256] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:48:17,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382589857] [2024-10-13 22:48:17,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:17,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:48:17,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:48:17,130 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:48:17,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 22:48:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:17,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 22:48:17,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:48:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-10-13 22:48:17,597 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:48:17,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382589857] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:17,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:48:17,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-13 22:48:17,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607691316] [2024-10-13 22:48:17,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:17,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:17,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:17,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:17,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:48:17,601 INFO L87 Difference]: Start difference. First operand 88975 states and 98926 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 22:48:18,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:18,396 INFO L93 Difference]: Finished difference Result 177152 states and 197025 transitions. [2024-10-13 22:48:18,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:18,397 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 419 [2024-10-13 22:48:18,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:18,499 INFO L225 Difference]: With dead ends: 177152 [2024-10-13 22:48:18,499 INFO L226 Difference]: Without dead ends: 88990 [2024-10-13 22:48:18,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:48:18,550 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 158 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:18,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 111 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 22:48:18,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88990 states. [2024-10-13 22:48:19,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88990 to 88975. [2024-10-13 22:48:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88975 states, 88974 states have (on average 1.0987704273158452) internal successors, (97762), 88974 states have internal predecessors, (97762), 0 states have call successors, (0), 0 states 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 22:48:19,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88975 states to 88975 states and 97762 transitions. [2024-10-13 22:48:19,880 INFO L78 Accepts]: Start accepts. Automaton has 88975 states and 97762 transitions. Word has length 419 [2024-10-13 22:48:19,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:19,881 INFO L471 AbstractCegarLoop]: Abstraction has 88975 states and 97762 transitions. [2024-10-13 22:48:19,881 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 22:48:19,881 INFO L276 IsEmpty]: Start isEmpty. Operand 88975 states and 97762 transitions. [2024-10-13 22:48:19,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-10-13 22:48:19,954 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:19,954 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:19,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-13 22:48:20,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 22:48:20,156 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:20,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:20,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1500452641, now seen corresponding path program 1 times [2024-10-13 22:48:20,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:20,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387346610] [2024-10-13 22:48:20,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:20,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:22,212 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 269 proven. 95 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-13 22:48:22,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:22,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387346610] [2024-10-13 22:48:22,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387346610] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:48:22,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741405375] [2024-10-13 22:48:22,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:22,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:48:22,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:48:22,216 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:48:22,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 22:48:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:22,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 22:48:22,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:48:22,569 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-13 22:48:22,570 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:48:22,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741405375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:22,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:48:22,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-13 22:48:22,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008598410] [2024-10-13 22:48:22,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:22,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:22,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:22,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:22,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 22:48:22,572 INFO L87 Difference]: Start difference. First operand 88975 states and 97762 transitions. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 22:48:23,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:23,368 INFO L93 Difference]: Finished difference Result 167121 states and 183333 transitions. [2024-10-13 22:48:23,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:23,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 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 422 [2024-10-13 22:48:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:23,448 INFO L225 Difference]: With dead ends: 167121 [2024-10-13 22:48:23,448 INFO L226 Difference]: Without dead ends: 78959 [2024-10-13 22:48:23,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 22:48:23,498 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 132 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:23,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 300 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 22:48:23,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78959 states. [2024-10-13 22:48:24,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78959 to 75910. [2024-10-13 22:48:24,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75910 states, 75909 states have (on average 1.0786336271061403) internal successors, (81878), 75909 states have internal predecessors, (81878), 0 states have call successors, (0), 0 states 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 22:48:24,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75910 states to 75910 states and 81878 transitions. [2024-10-13 22:48:24,709 INFO L78 Accepts]: Start accepts. Automaton has 75910 states and 81878 transitions. Word has length 422 [2024-10-13 22:48:24,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:24,710 INFO L471 AbstractCegarLoop]: Abstraction has 75910 states and 81878 transitions. [2024-10-13 22:48:24,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 22:48:24,710 INFO L276 IsEmpty]: Start isEmpty. Operand 75910 states and 81878 transitions. [2024-10-13 22:48:24,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-10-13 22:48:24,783 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:24,784 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:24,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 22:48:24,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 22:48:24,985 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:24,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:24,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2090237355, now seen corresponding path program 1 times [2024-10-13 22:48:24,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:24,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890435824] [2024-10-13 22:48:24,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:24,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-10-13 22:48:25,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:25,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890435824] [2024-10-13 22:48:25,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890435824] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:25,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:25,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 22:48:25,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516748369] [2024-10-13 22:48:25,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:25,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:48:25,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:25,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:48:25,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:48:25,625 INFO L87 Difference]: Start difference. First operand 75910 states and 81878 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 22:48:27,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:27,130 INFO L93 Difference]: Finished difference Result 158996 states and 171828 transitions. [2024-10-13 22:48:27,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:48:27,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 428 [2024-10-13 22:48:27,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:27,218 INFO L225 Difference]: With dead ends: 158996 [2024-10-13 22:48:27,218 INFO L226 Difference]: Without dead ends: 84102 [2024-10-13 22:48:27,261 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 22:48:27,262 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 360 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:27,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 101 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-13 22:48:27,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84102 states. [2024-10-13 22:48:28,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84102 to 84062. [2024-10-13 22:48:28,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84062 states, 84061 states have (on average 1.0770868773866598) internal successors, (90541), 84061 states have internal predecessors, (90541), 0 states have call successors, (0), 0 states 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 22:48:28,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84062 states to 84062 states and 90541 transitions. [2024-10-13 22:48:28,264 INFO L78 Accepts]: Start accepts. Automaton has 84062 states and 90541 transitions. Word has length 428 [2024-10-13 22:48:28,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:28,265 INFO L471 AbstractCegarLoop]: Abstraction has 84062 states and 90541 transitions. [2024-10-13 22:48:28,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 22:48:28,265 INFO L276 IsEmpty]: Start isEmpty. Operand 84062 states and 90541 transitions. [2024-10-13 22:48:28,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2024-10-13 22:48:28,318 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:28,318 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 22:48:28,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 22:48:28,318 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:28,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:28,319 INFO L85 PathProgramCache]: Analyzing trace with hash 2146579136, now seen corresponding path program 1 times [2024-10-13 22:48:28,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:28,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600165828] [2024-10-13 22:48:28,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:28,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 311 proven. 29 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-10-13 22:48:29,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:29,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600165828] [2024-10-13 22:48:29,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600165828] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:48:29,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490039031] [2024-10-13 22:48:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:29,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:48:29,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:48:29,095 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:48:29,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 22:48:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:29,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 22:48:29,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:48:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-10-13 22:48:29,333 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:48:29,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490039031] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:29,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:48:29,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-13 22:48:29,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177834383] [2024-10-13 22:48:29,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:29,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:29,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:29,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:29,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:48:29,335 INFO L87 Difference]: Start difference. First operand 84062 states and 90541 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 22:48:30,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:30,323 INFO L93 Difference]: Finished difference Result 159994 states and 172350 transitions. [2024-10-13 22:48:30,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:30,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 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 452 [2024-10-13 22:48:30,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:30,413 INFO L225 Difference]: With dead ends: 159994 [2024-10-13 22:48:30,413 INFO L226 Difference]: Without dead ends: 76948 [2024-10-13 22:48:30,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:48:30,451 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 209 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:30,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 292 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 22:48:30,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76948 states. [2024-10-13 22:48:31,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76948 to 70842. [2024-10-13 22:48:31,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70842 states, 70841 states have (on average 1.0643412712976947) internal successors, (75399), 70841 states have internal predecessors, (75399), 0 states have call successors, (0), 0 states 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 22:48:31,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70842 states to 70842 states and 75399 transitions. [2024-10-13 22:48:31,825 INFO L78 Accepts]: Start accepts. Automaton has 70842 states and 75399 transitions. Word has length 452 [2024-10-13 22:48:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:31,825 INFO L471 AbstractCegarLoop]: Abstraction has 70842 states and 75399 transitions. [2024-10-13 22:48:31,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 22:48:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 70842 states and 75399 transitions. [2024-10-13 22:48:31,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-10-13 22:48:31,877 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:31,877 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:31,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 22:48:32,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:48:32,078 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:32,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:32,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1554349385, now seen corresponding path program 1 times [2024-10-13 22:48:32,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:32,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619552088] [2024-10-13 22:48:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:32,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 473 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-13 22:48:32,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:32,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619552088] [2024-10-13 22:48:32,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619552088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:32,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:48:32,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 22:48:32,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876229425] [2024-10-13 22:48:32,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:32,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:48:32,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:32,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:48:32,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:48:32,484 INFO L87 Difference]: Start difference. First operand 70842 states and 75399 transitions. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:48:33,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:33,773 INFO L93 Difference]: Finished difference Result 198447 states and 211000 transitions. [2024-10-13 22:48:33,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:48:33,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 472 [2024-10-13 22:48:33,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:33,920 INFO L225 Difference]: With dead ends: 198447 [2024-10-13 22:48:33,920 INFO L226 Difference]: Without dead ends: 128621 [2024-10-13 22:48:33,966 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 22:48:33,967 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 288 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:33,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 430 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 22:48:34,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128621 states. [2024-10-13 22:48:35,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128621 to 122107. [2024-10-13 22:48:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122107 states, 122106 states have (on average 1.0633056524658904) internal successors, (129836), 122106 states have internal predecessors, (129836), 0 states have call successors, (0), 0 states 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 22:48:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122107 states to 122107 states and 129836 transitions. [2024-10-13 22:48:36,077 INFO L78 Accepts]: Start accepts. Automaton has 122107 states and 129836 transitions. Word has length 472 [2024-10-13 22:48:36,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:36,077 INFO L471 AbstractCegarLoop]: Abstraction has 122107 states and 129836 transitions. [2024-10-13 22:48:36,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:48:36,078 INFO L276 IsEmpty]: Start isEmpty. Operand 122107 states and 129836 transitions. [2024-10-13 22:48:36,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-10-13 22:48:36,153 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:48:36,154 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:36,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 22:48:36,154 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:48:36,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:48:36,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1014377482, now seen corresponding path program 1 times [2024-10-13 22:48:36,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:48:36,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746777000] [2024-10-13 22:48:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:36,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:48:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 529 proven. 47 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-13 22:48:38,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:48:38,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746777000] [2024-10-13 22:48:38,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746777000] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:48:38,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4143188] [2024-10-13 22:48:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:48:38,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:48:38,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:48:38,149 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:48:38,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 22:48:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:48:38,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 22:48:38,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:48:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-10-13 22:48:38,540 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:48:38,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4143188] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:48:38,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:48:38,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-13 22:48:38,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693389876] [2024-10-13 22:48:38,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:48:38,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:48:38,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:48:38,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:48:38,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-13 22:48:38,542 INFO L87 Difference]: Start difference. First operand 122107 states and 129836 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states 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 22:48:39,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:48:39,758 INFO L93 Difference]: Finished difference Result 269227 states and 286620 transitions. [2024-10-13 22:48:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:48:39,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 504 [2024-10-13 22:48:39,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:48:39,763 INFO L225 Difference]: With dead ends: 269227 [2024-10-13 22:48:39,763 INFO L226 Difference]: Without dead ends: 0 [2024-10-13 22:48:39,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-13 22:48:39,816 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 46 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:48:39,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 329 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 22:48:39,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-13 22:48:39,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-13 22:48:39,817 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 22:48:39,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-13 22:48:39,819 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 504 [2024-10-13 22:48:39,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:48:39,819 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 22:48:39,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states 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 22:48:39,820 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-13 22:48:39,820 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-13 22:48:39,822 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-13 22:48:39,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 22:48:40,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-13 22:48:40,026 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:48:40,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-13 22:48:55,746 WARN L286 SmtUtils]: Spent 15.71s on a formula simplification. DAG size of input: 753 DAG size of output: 858 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or)