./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/Problem17_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label01.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 a4e6e263a6fe01660f2ecabfa1a654296517a773a2b8a9b458da8809aa3aafd8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:28:34,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:28:34,418 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:28:34,426 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:28:34,426 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:28:34,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:28:34,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:28:34,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:28:34,461 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:28:34,462 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:28:34,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:28:34,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:28:34,463 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:28:34,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:28:34,463 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:28:34,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:28:34,464 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:28:34,467 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:28:34,470 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:28:34,470 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:28:34,471 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:28:34,471 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:28:34,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:28:34,472 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:28:34,472 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:28:34,474 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:28:34,474 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:28:34,474 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:28:34,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:28:34,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:28:34,475 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:28:34,475 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:28:34,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:28:34,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:28:34,476 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:28:34,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:28:34,477 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:28:34,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:28:34,478 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:28:34,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:28:34,478 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:28:34,479 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:28:34,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4e6e263a6fe01660f2ecabfa1a654296517a773a2b8a9b458da8809aa3aafd8 [2024-10-23 21:28:34,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:28:34,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:28:34,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:28:34,736 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:28:34,736 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:28:34,737 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label01.c [2024-10-23 21:28:36,221 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:28:36,577 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:28:36,578 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label01.c [2024-10-23 21:28:36,601 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2afabebff/3aa7eb2d8fa54808b5d9341ed325d3f1/FLAG547d4f623 [2024-10-23 21:28:36,788 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2afabebff/3aa7eb2d8fa54808b5d9341ed325d3f1 [2024-10-23 21:28:36,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:28:36,792 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:28:36,793 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:28:36,794 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:28:36,799 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:28:36,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:28:36" (1/1) ... [2024-10-23 21:28:36,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:36, skipping insertion in model container [2024-10-23 21:28:36,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:28:36" (1/1) ... [2024-10-23 21:28:36,880 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:28:37,145 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/Problem17_label01.c[6877,6890] [2024-10-23 21:28:37,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:28:37,775 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:28:37,803 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/Problem17_label01.c[6877,6890] [2024-10-23 21:28:38,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:28:38,050 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:28:38,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:38 WrapperNode [2024-10-23 21:28:38,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:28:38,053 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:28:38,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:28:38,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:28:38,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:38" (1/1) ... [2024-10-23 21:28:38,110 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:38" (1/1) ... [2024-10-23 21:28:38,359 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-10-23 21:28:38,360 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:28:38,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:28:38,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:28:38,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:28:38,372 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:38" (1/1) ... [2024-10-23 21:28:38,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:38" (1/1) ... [2024-10-23 21:28:38,406 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:38" (1/1) ... [2024-10-23 21:28:38,606 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-23 21:28:38,606 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:38" (1/1) ... [2024-10-23 21:28:38,606 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:38" (1/1) ... [2024-10-23 21:28:38,711 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:38" (1/1) ... [2024-10-23 21:28:38,790 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:38" (1/1) ... [2024-10-23 21:28:38,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:38" (1/1) ... [2024-10-23 21:28:38,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:38" (1/1) ... [2024-10-23 21:28:38,850 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:28:38,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:28:38,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:28:38,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:28:38,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:38" (1/1) ... [2024-10-23 21:28:38,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:28:38,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:28:38,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 21:28:38,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 21:28:38,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:28:38,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:28:38,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:28:38,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:28:39,009 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:28:39,011 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:28:42,325 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-10-23 21:28:42,326 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:28:42,390 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:28:42,390 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:28:42,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:28:42 BoogieIcfgContainer [2024-10-23 21:28:42,391 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:28:42,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:28:42,396 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:28:42,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:28:42,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:28:36" (1/3) ... [2024-10-23 21:28:42,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a1e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:28:42, skipping insertion in model container [2024-10-23 21:28:42,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:38" (2/3) ... [2024-10-23 21:28:42,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a1e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:28:42, skipping insertion in model container [2024-10-23 21:28:42,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:28:42" (3/3) ... [2024-10-23 21:28:42,404 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label01.c [2024-10-23 21:28:42,419 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:28:42,419 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:28:42,494 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:28:42,500 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;@2a702fff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:28:42,500 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:28:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:42,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-23 21:28:42,518 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:28:42,518 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] [2024-10-23 21:28:42,519 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:28:42,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:28:42,524 INFO L85 PathProgramCache]: Analyzing trace with hash 2000105043, now seen corresponding path program 1 times [2024-10-23 21:28:42,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:28:42,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730711539] [2024-10-23 21:28:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:28:42,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:28:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:28:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:28:42,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:28:42,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730711539] [2024-10-23 21:28:42,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730711539] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:28:42,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:28:42,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:28:42,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585036151] [2024-10-23 21:28:42,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:28:42,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:28:42,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:28:42,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:28:42,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:28:42,732 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 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 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:42,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:28:42,822 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2024-10-23 21:28:42,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:28:42,830 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-10-23 21:28:42,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:28:42,847 INFO L225 Difference]: With dead ends: 1055 [2024-10-23 21:28:42,847 INFO L226 Difference]: Without dead ends: 526 [2024-10-23 21:28:42,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:28:42,857 INFO L432 NwaCegarLoop]: 935 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, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:28:42,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:28:42,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-23 21:28:42,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-10-23 21:28:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2024-10-23 21:28:42,933 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 45 [2024-10-23 21:28:42,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:28:42,934 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2024-10-23 21:28:42,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2024-10-23 21:28:42,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-23 21:28:42,936 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:28:42,936 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] [2024-10-23 21:28:42,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:28:42,937 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:28:42,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:28:42,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1551850062, now seen corresponding path program 1 times [2024-10-23 21:28:42,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:28:42,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940582122] [2024-10-23 21:28:42,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:28:42,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:28:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:28:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:28:43,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:28:43,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940582122] [2024-10-23 21:28:43,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940582122] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:28:43,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:28:43,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:28:43,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102131269] [2024-10-23 21:28:43,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:28:43,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:28:43,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:28:43,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:28:43,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:28:43,124 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:45,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:28:45,392 INFO L93 Difference]: Finished difference Result 1501 states and 2698 transitions. [2024-10-23 21:28:45,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:28:45,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-10-23 21:28:45,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:28:45,401 INFO L225 Difference]: With dead ends: 1501 [2024-10-23 21:28:45,401 INFO L226 Difference]: Without dead ends: 976 [2024-10-23 21:28:45,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:28:45,408 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 426 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:28:45,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 448 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:28:45,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2024-10-23 21:28:45,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2024-10-23 21:28:45,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.5541795665634675) internal successors, (1506), 969 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:45,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2024-10-23 21:28:45,445 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 45 [2024-10-23 21:28:45,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:28:45,445 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2024-10-23 21:28:45,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:45,446 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2024-10-23 21:28:45,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-23 21:28:45,448 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:28:45,449 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:28:45,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:28:45,449 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:28:45,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:28:45,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1178648346, now seen corresponding path program 1 times [2024-10-23 21:28:45,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:28:45,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191868483] [2024-10-23 21:28:45,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:28:45,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:28:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:28:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:28:45,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:28:45,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191868483] [2024-10-23 21:28:45,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191868483] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:28:45,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:28:45,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:28:45,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116668667] [2024-10-23 21:28:45,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:28:45,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:28:45,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:28:45,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:28:45,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:28:45,669 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:47,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:28:47,803 INFO L93 Difference]: Finished difference Result 2812 states and 4380 transitions. [2024-10-23 21:28:47,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:28:47,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2024-10-23 21:28:47,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:28:47,810 INFO L225 Difference]: With dead ends: 2812 [2024-10-23 21:28:47,811 INFO L226 Difference]: Without dead ends: 1843 [2024-10-23 21:28:47,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:28:47,813 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:28:47,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 577 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:28:47,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2024-10-23 21:28:47,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1840. [2024-10-23 21:28:47,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3501903208265362) internal successors, (2483), 1839 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:47,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2483 transitions. [2024-10-23 21:28:47,854 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2483 transitions. Word has length 112 [2024-10-23 21:28:47,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:28:47,856 INFO L471 AbstractCegarLoop]: Abstraction has 1840 states and 2483 transitions. [2024-10-23 21:28:47,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:47,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2483 transitions. [2024-10-23 21:28:47,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-23 21:28:47,864 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:28:47,864 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:28:47,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:28:47,865 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:28:47,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:28:47,865 INFO L85 PathProgramCache]: Analyzing trace with hash 762015358, now seen corresponding path program 1 times [2024-10-23 21:28:47,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:28:47,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792109424] [2024-10-23 21:28:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:28:47,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:28:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:28:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:28:48,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:28:48,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792109424] [2024-10-23 21:28:48,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792109424] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:28:48,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:28:48,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:28:48,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061275333] [2024-10-23 21:28:48,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:28:48,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:28:48,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:28:48,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:28:48,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:28:48,212 INFO L87 Difference]: Start difference. First operand 1840 states and 2483 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:51,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:28:51,648 INFO L93 Difference]: Finished difference Result 6764 states and 9257 transitions. [2024-10-23 21:28:51,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:28:51,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2024-10-23 21:28:51,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:28:51,667 INFO L225 Difference]: With dead ends: 6764 [2024-10-23 21:28:51,667 INFO L226 Difference]: Without dead ends: 4925 [2024-10-23 21:28:51,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:28:51,676 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 866 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2790 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 3384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 2790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:28:51,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 326 Invalid, 3384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 2790 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-23 21:28:51,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2024-10-23 21:28:51,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 4874. [2024-10-23 21:28:51,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 4873 states have (on average 1.286476503180792) internal successors, (6269), 4873 states have internal predecessors, (6269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 6269 transitions. [2024-10-23 21:28:51,768 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 6269 transitions. Word has length 115 [2024-10-23 21:28:51,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:28:51,768 INFO L471 AbstractCegarLoop]: Abstraction has 4874 states and 6269 transitions. [2024-10-23 21:28:51,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:51,769 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 6269 transitions. [2024-10-23 21:28:51,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-10-23 21:28:51,774 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:28:51,774 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-23 21:28:51,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:28:51,775 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:28:51,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:28:51,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1942059196, now seen corresponding path program 1 times [2024-10-23 21:28:51,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:28:51,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097062337] [2024-10-23 21:28:51,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:28:51,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:28:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:28:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-23 21:28:52,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:28:52,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097062337] [2024-10-23 21:28:52,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097062337] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:28:52,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:28:52,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:28:52,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013417056] [2024-10-23 21:28:52,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:28:52,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:28:52,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:28:52,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:28:52,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:28:52,139 INFO L87 Difference]: Start difference. First operand 4874 states and 6269 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:53,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:28:53,851 INFO L93 Difference]: Finished difference Result 14435 states and 18540 transitions. [2024-10-23 21:28:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:28:53,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 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 186 [2024-10-23 21:28:53,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:28:53,880 INFO L225 Difference]: With dead ends: 14435 [2024-10-23 21:28:53,880 INFO L226 Difference]: Without dead ends: 8276 [2024-10-23 21:28:53,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:28:53,894 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:28:53,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 588 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:28:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8276 states. [2024-10-23 21:28:53,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8276 to 6146. [2024-10-23 21:28:54,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6146 states, 6145 states have (on average 1.1907241659886085) internal successors, (7317), 6145 states have internal predecessors, (7317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:54,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6146 states to 6146 states and 7317 transitions. [2024-10-23 21:28:54,013 INFO L78 Accepts]: Start accepts. Automaton has 6146 states and 7317 transitions. Word has length 186 [2024-10-23 21:28:54,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:28:54,014 INFO L471 AbstractCegarLoop]: Abstraction has 6146 states and 7317 transitions. [2024-10-23 21:28:54,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:54,014 INFO L276 IsEmpty]: Start isEmpty. Operand 6146 states and 7317 transitions. [2024-10-23 21:28:54,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-10-23 21:28:54,016 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:28:54,017 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2024-10-23 21:28:54,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:28:54,017 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:28:54,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:28:54,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1731213872, now seen corresponding path program 1 times [2024-10-23 21:28:54,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:28:54,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623659986] [2024-10-23 21:28:54,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:28:54,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:28:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:28:54,264 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:28:54,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:28:54,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623659986] [2024-10-23 21:28:54,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623659986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:28:54,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:28:54,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:28:54,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382718280] [2024-10-23 21:28:54,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:28:54,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:28:54,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:28:54,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:28:54,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:28:54,267 INFO L87 Difference]: Start difference. First operand 6146 states and 7317 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:55,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:28:55,821 INFO L93 Difference]: Finished difference Result 15691 states and 18896 transitions. [2024-10-23 21:28:55,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:28:55,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 199 [2024-10-23 21:28:55,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:28:55,853 INFO L225 Difference]: With dead ends: 15691 [2024-10-23 21:28:55,854 INFO L226 Difference]: Without dead ends: 9546 [2024-10-23 21:28:55,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:28:55,868 INFO L432 NwaCegarLoop]: 411 mSDtfsCounter, 413 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:28:55,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 475 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:28:55,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9546 states. [2024-10-23 21:28:55,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9546 to 6123. [2024-10-23 21:28:55,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6123 states, 6122 states have (on average 1.1894805619078732) internal successors, (7282), 6122 states have internal predecessors, (7282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:56,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 7282 transitions. [2024-10-23 21:28:56,000 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 7282 transitions. Word has length 199 [2024-10-23 21:28:56,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:28:56,001 INFO L471 AbstractCegarLoop]: Abstraction has 6123 states and 7282 transitions. [2024-10-23 21:28:56,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:56,001 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 7282 transitions. [2024-10-23 21:28:56,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-10-23 21:28:56,004 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:28:56,004 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:28:56,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:28:56,005 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:28:56,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:28:56,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1028044277, now seen corresponding path program 1 times [2024-10-23 21:28:56,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:28:56,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601928839] [2024-10-23 21:28:56,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:28:56,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:28:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:28:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:28:56,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:28:56,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601928839] [2024-10-23 21:28:56,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601928839] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:28:56,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:28:56,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:28:56,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684664276] [2024-10-23 21:28:56,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:28:56,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:28:56,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:28:56,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:28:56,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:28:56,251 INFO L87 Difference]: Start difference. First operand 6123 states and 7282 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:57,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:28:57,736 INFO L93 Difference]: Finished difference Result 16077 states and 19443 transitions. [2024-10-23 21:28:57,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:28:57,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 206 [2024-10-23 21:28:57,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:28:57,757 INFO L225 Difference]: With dead ends: 16077 [2024-10-23 21:28:57,757 INFO L226 Difference]: Without dead ends: 9955 [2024-10-23 21:28:57,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:28:57,766 INFO L432 NwaCegarLoop]: 732 mSDtfsCounter, 487 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:28:57,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 785 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:28:57,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9955 states. [2024-10-23 21:28:57,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9955 to 9955. [2024-10-23 21:28:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9955 states, 9954 states have (on average 1.1716897729555957) internal successors, (11663), 9954 states have internal predecessors, (11663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9955 states to 9955 states and 11663 transitions. [2024-10-23 21:28:57,957 INFO L78 Accepts]: Start accepts. Automaton has 9955 states and 11663 transitions. Word has length 206 [2024-10-23 21:28:57,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:28:57,958 INFO L471 AbstractCegarLoop]: Abstraction has 9955 states and 11663 transitions. [2024-10-23 21:28:57,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:28:57,958 INFO L276 IsEmpty]: Start isEmpty. Operand 9955 states and 11663 transitions. [2024-10-23 21:28:57,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-10-23 21:28:57,963 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:28:57,963 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-10-23 21:28:57,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:28:57,963 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:28:57,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:28:57,964 INFO L85 PathProgramCache]: Analyzing trace with hash -922644452, now seen corresponding path program 1 times [2024-10-23 21:28:57,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:28:57,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255843763] [2024-10-23 21:28:57,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:28:57,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:28:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:28:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 226 proven. 70 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-23 21:28:58,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:28:58,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255843763] [2024-10-23 21:28:58,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255843763] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:28:58,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933197001] [2024-10-23 21:28:58,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:28:58,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:28:58,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:28:58,483 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:28:58,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:28:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:28:58,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:28:58,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:28:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 226 proven. 70 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-23 21:28:58,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:28:59,197 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-23 21:28:59,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933197001] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:28:59,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:28:59,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-23 21:28:59,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690695266] [2024-10-23 21:28:59,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:28:59,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:28:59,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:28:59,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:28:59,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:28:59,200 INFO L87 Difference]: Start difference. First operand 9955 states and 11663 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:01,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:01,891 INFO L93 Difference]: Finished difference Result 30574 states and 36166 transitions. [2024-10-23 21:29:01,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:29:01,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 269 [2024-10-23 21:29:01,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:01,925 INFO L225 Difference]: With dead ends: 30574 [2024-10-23 21:29:01,925 INFO L226 Difference]: Without dead ends: 19762 [2024-10-23 21:29:01,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:29:01,940 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 889 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 3001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:01,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 159 Invalid, 3001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:29:01,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19762 states. [2024-10-23 21:29:02,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19762 to 19759. [2024-10-23 21:29:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19759 states, 19758 states have (on average 1.1599858285251543) internal successors, (22919), 19758 states have internal predecessors, (22919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:02,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19759 states to 19759 states and 22919 transitions. [2024-10-23 21:29:02,315 INFO L78 Accepts]: Start accepts. Automaton has 19759 states and 22919 transitions. Word has length 269 [2024-10-23 21:29:02,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:02,315 INFO L471 AbstractCegarLoop]: Abstraction has 19759 states and 22919 transitions. [2024-10-23 21:29:02,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:02,316 INFO L276 IsEmpty]: Start isEmpty. Operand 19759 states and 22919 transitions. [2024-10-23 21:29:02,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-10-23 21:29:02,319 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:02,320 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:02,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:29:02,520 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 [2024-10-23 21:29:02,522 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:02,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:02,523 INFO L85 PathProgramCache]: Analyzing trace with hash 514472576, now seen corresponding path program 1 times [2024-10-23 21:29:02,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:02,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001022154] [2024-10-23 21:29:02,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:02,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-23 21:29:02,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:02,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001022154] [2024-10-23 21:29:02,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001022154] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:02,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:02,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:02,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390424] [2024-10-23 21:29:02,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:02,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:02,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:02,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:02,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:02,862 INFO L87 Difference]: Start difference. First operand 19759 states and 22919 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:04,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:04,858 INFO L93 Difference]: Finished difference Result 42908 states and 49988 transitions. [2024-10-23 21:29:04,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:04,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 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 282 [2024-10-23 21:29:04,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:04,905 INFO L225 Difference]: With dead ends: 42908 [2024-10-23 21:29:04,905 INFO L226 Difference]: Without dead ends: 23150 [2024-10-23 21:29:04,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:04,929 INFO L432 NwaCegarLoop]: 824 mSDtfsCounter, 374 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:04,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 893 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-23 21:29:04,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23150 states. [2024-10-23 21:29:05,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23150 to 22724. [2024-10-23 21:29:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22724 states, 22723 states have (on average 1.1456233771949127) internal successors, (26032), 22723 states have internal predecessors, (26032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:05,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22724 states to 22724 states and 26032 transitions. [2024-10-23 21:29:05,271 INFO L78 Accepts]: Start accepts. Automaton has 22724 states and 26032 transitions. Word has length 282 [2024-10-23 21:29:05,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:05,271 INFO L471 AbstractCegarLoop]: Abstraction has 22724 states and 26032 transitions. [2024-10-23 21:29:05,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:05,272 INFO L276 IsEmpty]: Start isEmpty. Operand 22724 states and 26032 transitions. [2024-10-23 21:29:05,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-10-23 21:29:05,276 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:05,277 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-10-23 21:29:05,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:29:05,277 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:05,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:05,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1725216635, now seen corresponding path program 1 times [2024-10-23 21:29:05,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:05,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849868793] [2024-10-23 21:29:05,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:05,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:29:05,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:05,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849868793] [2024-10-23 21:29:05,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849868793] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:05,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:05,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:29:05,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612259727] [2024-10-23 21:29:05,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:05,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:29:05,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:05,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:29:05,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:29:05,806 INFO L87 Difference]: Start difference. First operand 22724 states and 26032 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:08,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:08,791 INFO L93 Difference]: Finished difference Result 64238 states and 73654 transitions. [2024-10-23 21:29:08,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:29:08,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 305 [2024-10-23 21:29:08,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:08,857 INFO L225 Difference]: With dead ends: 64238 [2024-10-23 21:29:08,857 INFO L226 Difference]: Without dead ends: 38536 [2024-10-23 21:29:08,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:29:08,884 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 873 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:08,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 339 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 2677 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-23 21:29:08,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38536 states. [2024-10-23 21:29:09,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38536 to 38055. [2024-10-23 21:29:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38055 states, 38054 states have (on average 1.1408787512482261) internal successors, (43415), 38054 states have internal predecessors, (43415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:09,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38055 states to 38055 states and 43415 transitions. [2024-10-23 21:29:09,361 INFO L78 Accepts]: Start accepts. Automaton has 38055 states and 43415 transitions. Word has length 305 [2024-10-23 21:29:09,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:09,361 INFO L471 AbstractCegarLoop]: Abstraction has 38055 states and 43415 transitions. [2024-10-23 21:29:09,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:09,362 INFO L276 IsEmpty]: Start isEmpty. Operand 38055 states and 43415 transitions. [2024-10-23 21:29:09,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-10-23 21:29:09,367 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:09,368 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:29:09,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:29:09,369 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:09,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:09,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1246574966, now seen corresponding path program 1 times [2024-10-23 21:29:09,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:09,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138881138] [2024-10-23 21:29:09,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:09,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:09,601 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-10-23 21:29:09,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:09,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138881138] [2024-10-23 21:29:09,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138881138] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:09,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:09,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:09,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394863709] [2024-10-23 21:29:09,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:09,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:09,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:09,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:09,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:09,603 INFO L87 Difference]: Start difference. First operand 38055 states and 43415 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:11,498 INFO L93 Difference]: Finished difference Result 91843 states and 104583 transitions. [2024-10-23 21:29:11,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:11,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 317 [2024-10-23 21:29:11,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:11,567 INFO L225 Difference]: With dead ends: 91843 [2024-10-23 21:29:11,567 INFO L226 Difference]: Without dead ends: 53357 [2024-10-23 21:29:11,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:11,604 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 423 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:11,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 429 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-23 21:29:11,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53357 states. [2024-10-23 21:29:12,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53357 to 49523. [2024-10-23 21:29:12,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49523 states, 49522 states have (on average 1.1243891603731675) internal successors, (55682), 49522 states have internal predecessors, (55682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:12,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49523 states to 49523 states and 55682 transitions. [2024-10-23 21:29:12,247 INFO L78 Accepts]: Start accepts. Automaton has 49523 states and 55682 transitions. Word has length 317 [2024-10-23 21:29:12,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:12,248 INFO L471 AbstractCegarLoop]: Abstraction has 49523 states and 55682 transitions. [2024-10-23 21:29:12,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:12,249 INFO L276 IsEmpty]: Start isEmpty. Operand 49523 states and 55682 transitions. [2024-10-23 21:29:12,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-10-23 21:29:12,255 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:12,256 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-10-23 21:29:12,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:29:12,256 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:12,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:12,257 INFO L85 PathProgramCache]: Analyzing trace with hash -588855338, now seen corresponding path program 1 times [2024-10-23 21:29:12,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:12,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868091494] [2024-10-23 21:29:12,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:12,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-23 21:29:12,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:12,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868091494] [2024-10-23 21:29:12,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868091494] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:12,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:12,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:12,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408972500] [2024-10-23 21:29:12,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:12,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:12,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:12,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:12,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:12,717 INFO L87 Difference]: Start difference. First operand 49523 states and 55682 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:14,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:14,582 INFO L93 Difference]: Finished difference Result 114396 states and 129046 transitions. [2024-10-23 21:29:14,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:14,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 320 [2024-10-23 21:29:14,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:14,664 INFO L225 Difference]: With dead ends: 114396 [2024-10-23 21:29:14,665 INFO L226 Difference]: Without dead ends: 63172 [2024-10-23 21:29:14,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:14,707 INFO L432 NwaCegarLoop]: 743 mSDtfsCounter, 364 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:14,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 813 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:29:14,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63172 states. [2024-10-23 21:29:15,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63172 to 61885. [2024-10-23 21:29:15,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61885 states, 61884 states have (on average 1.107410639260552) internal successors, (68531), 61884 states have internal predecessors, (68531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61885 states to 61885 states and 68531 transitions. [2024-10-23 21:29:15,646 INFO L78 Accepts]: Start accepts. Automaton has 61885 states and 68531 transitions. Word has length 320 [2024-10-23 21:29:15,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:15,647 INFO L471 AbstractCegarLoop]: Abstraction has 61885 states and 68531 transitions. [2024-10-23 21:29:15,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:15,647 INFO L276 IsEmpty]: Start isEmpty. Operand 61885 states and 68531 transitions. [2024-10-23 21:29:15,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2024-10-23 21:29:15,655 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:15,656 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:15,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:29:15,656 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:15,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:15,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1109823014, now seen corresponding path program 1 times [2024-10-23 21:29:15,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:15,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355432933] [2024-10-23 21:29:15,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:15,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 340 proven. 214 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-23 21:29:16,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:16,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355432933] [2024-10-23 21:29:16,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355432933] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:29:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722544245] [2024-10-23 21:29:16,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:16,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:29:16,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:29:16,485 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:29:16,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:29:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:16,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:29:16,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:29:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 367 proven. 73 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-10-23 21:29:16,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:29:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-10-23 21:29:17,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722544245] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:29:17,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:29:17,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2024-10-23 21:29:17,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746188010] [2024-10-23 21:29:17,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:17,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:29:17,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:17,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:29:17,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:29:17,097 INFO L87 Difference]: Start difference. First operand 61885 states and 68531 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:20,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:20,097 INFO L93 Difference]: Finished difference Result 144216 states and 159921 transitions. [2024-10-23 21:29:20,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:29:20,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 343 [2024-10-23 21:29:20,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:20,334 INFO L225 Difference]: With dead ends: 144216 [2024-10-23 21:29:20,334 INFO L226 Difference]: Without dead ends: 82332 [2024-10-23 21:29:20,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:29:20,382 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 908 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 2997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:20,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 171 Invalid, 2997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [678 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:29:20,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82332 states. [2024-10-23 21:29:21,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82332 to 77652. [2024-10-23 21:29:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77652 states, 77651 states have (on average 1.1105716603778444) internal successors, (86237), 77651 states have internal predecessors, (86237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:21,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77652 states to 77652 states and 86237 transitions. [2024-10-23 21:29:21,250 INFO L78 Accepts]: Start accepts. Automaton has 77652 states and 86237 transitions. Word has length 343 [2024-10-23 21:29:21,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:21,250 INFO L471 AbstractCegarLoop]: Abstraction has 77652 states and 86237 transitions. [2024-10-23 21:29:21,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:21,250 INFO L276 IsEmpty]: Start isEmpty. Operand 77652 states and 86237 transitions. [2024-10-23 21:29:21,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-10-23 21:29:21,257 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:21,257 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:21,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 21:29:21,458 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,SelfDestructingSolverStorable12 [2024-10-23 21:29:21,458 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:21,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:21,459 INFO L85 PathProgramCache]: Analyzing trace with hash -468157460, now seen corresponding path program 1 times [2024-10-23 21:29:21,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:21,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039662759] [2024-10-23 21:29:21,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:21,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-10-23 21:29:22,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:22,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039662759] [2024-10-23 21:29:22,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039662759] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:22,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:22,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:22,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196304398] [2024-10-23 21:29:22,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:22,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:22,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:22,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:22,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:22,063 INFO L87 Difference]: Start difference. First operand 77652 states and 86237 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:24,280 INFO L93 Difference]: Finished difference Result 168919 states and 188109 transitions. [2024-10-23 21:29:24,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:24,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2024-10-23 21:29:24,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:24,400 INFO L225 Difference]: With dead ends: 168919 [2024-10-23 21:29:24,400 INFO L226 Difference]: Without dead ends: 90416 [2024-10-23 21:29:24,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:24,414 INFO L432 NwaCegarLoop]: 764 mSDtfsCounter, 392 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:24,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 821 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-23 21:29:24,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90416 states. [2024-10-23 21:29:25,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90416 to 75490. [2024-10-23 21:29:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75490 states, 75489 states have (on average 1.1091947171111023) internal successors, (83732), 75489 states have internal predecessors, (83732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:25,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75490 states to 75490 states and 83732 transitions. [2024-10-23 21:29:25,487 INFO L78 Accepts]: Start accepts. Automaton has 75490 states and 83732 transitions. Word has length 373 [2024-10-23 21:29:25,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:25,489 INFO L471 AbstractCegarLoop]: Abstraction has 75490 states and 83732 transitions. [2024-10-23 21:29:25,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:25,490 INFO L276 IsEmpty]: Start isEmpty. Operand 75490 states and 83732 transitions. [2024-10-23 21:29:25,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-10-23 21:29:25,504 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:25,504 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:25,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 21:29:25,505 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:25,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:25,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1488693966, now seen corresponding path program 1 times [2024-10-23 21:29:25,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:25,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616782995] [2024-10-23 21:29:25,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:25,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-23 21:29:25,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:25,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616782995] [2024-10-23 21:29:25,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616782995] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:25,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:25,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:25,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889596504] [2024-10-23 21:29:25,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:25,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:25,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:25,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:25,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:25,709 INFO L87 Difference]: Start difference. First operand 75490 states and 83732 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) 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) [2024-10-23 21:29:27,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:27,712 INFO L93 Difference]: Finished difference Result 156938 states and 174499 transitions. [2024-10-23 21:29:27,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:27,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) 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 378 [2024-10-23 21:29:27,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:27,799 INFO L225 Difference]: With dead ends: 156938 [2024-10-23 21:29:27,799 INFO L226 Difference]: Without dead ends: 81021 [2024-10-23 21:29:27,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:27,847 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 472 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:27,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 267 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:29:27,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81021 states. [2024-10-23 21:29:28,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81021 to 78457. [2024-10-23 21:29:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78457 states, 78456 states have (on average 1.1072703171204241) internal successors, (86872), 78456 states have internal predecessors, (86872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:29,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78457 states to 78457 states and 86872 transitions. [2024-10-23 21:29:29,177 INFO L78 Accepts]: Start accepts. Automaton has 78457 states and 86872 transitions. Word has length 378 [2024-10-23 21:29:29,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:29,181 INFO L471 AbstractCegarLoop]: Abstraction has 78457 states and 86872 transitions. [2024-10-23 21:29:29,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) 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) [2024-10-23 21:29:29,182 INFO L276 IsEmpty]: Start isEmpty. Operand 78457 states and 86872 transitions. [2024-10-23 21:29:29,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-10-23 21:29:29,192 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:29,192 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:29,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:29:29,192 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:29,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1292906009, now seen corresponding path program 1 times [2024-10-23 21:29:29,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:29,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918221657] [2024-10-23 21:29:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:29,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-10-23 21:29:29,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:29,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918221657] [2024-10-23 21:29:29,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918221657] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:29,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:29,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:29,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026186636] [2024-10-23 21:29:29,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:29,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:29,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:29,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:29,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:29,385 INFO L87 Difference]: Start difference. First operand 78457 states and 86872 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:31,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:31,246 INFO L93 Difference]: Finished difference Result 167540 states and 185295 transitions. [2024-10-23 21:29:31,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:31,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 395 [2024-10-23 21:29:31,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:31,331 INFO L225 Difference]: With dead ends: 167540 [2024-10-23 21:29:31,331 INFO L226 Difference]: Without dead ends: 88653 [2024-10-23 21:29:31,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:31,368 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 391 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:31,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 329 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:29:31,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88653 states. [2024-10-23 21:29:32,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88653 to 83122. [2024-10-23 21:29:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83122 states, 83121 states have (on average 1.0984709038630431) internal successors, (91306), 83121 states have internal predecessors, (91306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83122 states to 83122 states and 91306 transitions. [2024-10-23 21:29:32,525 INFO L78 Accepts]: Start accepts. Automaton has 83122 states and 91306 transitions. Word has length 395 [2024-10-23 21:29:32,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:32,526 INFO L471 AbstractCegarLoop]: Abstraction has 83122 states and 91306 transitions. [2024-10-23 21:29:32,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:32,526 INFO L276 IsEmpty]: Start isEmpty. Operand 83122 states and 91306 transitions. [2024-10-23 21:29:32,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2024-10-23 21:29:32,533 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:32,533 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 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] [2024-10-23 21:29:32,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:29:32,534 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:32,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:32,534 INFO L85 PathProgramCache]: Analyzing trace with hash -821633864, now seen corresponding path program 1 times [2024-10-23 21:29:32,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:32,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257179618] [2024-10-23 21:29:32,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:32,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:33,785 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 346 proven. 44 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-23 21:29:33,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:33,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257179618] [2024-10-23 21:29:33,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257179618] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:29:33,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860152700] [2024-10-23 21:29:33,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:33,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:29:33,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:29:33,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:29:33,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 21:29:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:33,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-23 21:29:33,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:29:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 417 proven. 82 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-10-23 21:29:34,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:29:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 417 proven. 82 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-10-23 21:29:35,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860152700] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 21:29:35,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 21:29:35,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-10-23 21:29:35,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208662783] [2024-10-23 21:29:35,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 21:29:35,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-23 21:29:35,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:35,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-23 21:29:35,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:29:35,303 INFO L87 Difference]: Start difference. First operand 83122 states and 91306 transitions. Second operand has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:47,549 INFO L93 Difference]: Finished difference Result 205833 states and 225121 transitions. [2024-10-23 21:29:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-23 21:29:47,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 0 states have call successors, (0), 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 425 [2024-10-23 21:29:47,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:47,684 INFO L225 Difference]: With dead ends: 205833 [2024-10-23 21:29:47,684 INFO L226 Difference]: Without dead ends: 117604 [2024-10-23 21:29:47,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 863 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2024-10-23 21:29:47,719 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 10219 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 15094 mSolverCounterSat, 2742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10219 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 17836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2742 IncrementalHoareTripleChecker+Valid, 15094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:47,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10219 Valid, 472 Invalid, 17836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2742 Valid, 15094 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2024-10-23 21:29:47,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117604 states. [2024-10-23 21:29:49,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117604 to 97562. [2024-10-23 21:29:49,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97562 states, 97561 states have (on average 1.08021647994588) internal successors, (105387), 97561 states have internal predecessors, (105387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:49,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97562 states to 97562 states and 105387 transitions. [2024-10-23 21:29:49,236 INFO L78 Accepts]: Start accepts. Automaton has 97562 states and 105387 transitions. Word has length 425 [2024-10-23 21:29:49,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:49,237 INFO L471 AbstractCegarLoop]: Abstraction has 97562 states and 105387 transitions. [2024-10-23 21:29:49,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:49,237 INFO L276 IsEmpty]: Start isEmpty. Operand 97562 states and 105387 transitions. [2024-10-23 21:29:49,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2024-10-23 21:29:49,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:49,246 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:49,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 21:29:49,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:29:49,447 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:49,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2061043902, now seen corresponding path program 1 times [2024-10-23 21:29:49,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:49,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999924626] [2024-10-23 21:29:49,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:49,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat