./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/Problem11_label35.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/Problem11_label35.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 332223a74015f37ef1848305a6dc2d3188fda0d257576dbd7b4025d0bb05f229 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:02:57,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:02:57,346 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:02:57,351 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:02:57,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:02:57,381 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:02:57,382 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:02:57,383 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:02:57,383 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:02:57,384 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:02:57,385 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:02:57,385 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:02:57,385 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:02:57,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:02:57,386 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:02:57,386 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:02:57,387 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:02:57,387 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:02:57,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:02:57,390 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:02:57,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:02:57,394 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:02:57,394 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:02:57,395 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:02:57,395 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:02:57,395 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:02:57,396 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:02:57,396 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:02:57,396 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:02:57,397 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:02:57,397 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:02:57,397 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:02:57,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:02:57,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:02:57,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:02:57,398 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:02:57,399 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:02:57,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:02:57,400 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:02:57,400 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:02:57,400 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:02:57,400 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:02:57,401 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 332223a74015f37ef1848305a6dc2d3188fda0d257576dbd7b4025d0bb05f229 [2024-10-23 21:02:57,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:02:57,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:02:57,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:02:57,691 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:02:57,692 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:02:57,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label35.c [2024-10-23 21:02:59,172 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:02:59,465 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:02:59,466 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label35.c [2024-10-23 21:02:59,484 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44a08caa3/17b13b84cfe94452b09dd1a82f700cec/FLAG7cc8896f9 [2024-10-23 21:02:59,744 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44a08caa3/17b13b84cfe94452b09dd1a82f700cec [2024-10-23 21:02:59,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:02:59,747 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:02:59,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:02:59,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:02:59,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:02:59,756 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:02:59" (1/1) ... [2024-10-23 21:02:59,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d004e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:59, skipping insertion in model container [2024-10-23 21:02:59,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:02:59" (1/1) ... [2024-10-23 21:02:59,822 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:03:00,073 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/Problem11_label35.c[8398,8411] [2024-10-23 21:03:00,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:03:00,327 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:03:00,369 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/Problem11_label35.c[8398,8411] [2024-10-23 21:03:00,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:03:00,563 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:03:00,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:00 WrapperNode [2024-10-23 21:03:00,564 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:03:00,565 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:03:00,565 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:03:00,565 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:03:00,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:00" (1/1) ... [2024-10-23 21:03:00,598 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:00" (1/1) ... [2024-10-23 21:03:00,694 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-10-23 21:03:00,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:03:00,696 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:03:00,696 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:03:00,696 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:03:00,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:00" (1/1) ... [2024-10-23 21:03:00,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:00" (1/1) ... [2024-10-23 21:03:00,725 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:00" (1/1) ... [2024-10-23 21:03:00,790 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 21:03:00,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:00" (1/1) ... [2024-10-23 21:03:00,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:00" (1/1) ... [2024-10-23 21:03:00,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:00" (1/1) ... [2024-10-23 21:03:00,849 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:00" (1/1) ... [2024-10-23 21:03:00,865 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:00" (1/1) ... [2024-10-23 21:03:00,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:00" (1/1) ... [2024-10-23 21:03:00,900 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:03:00,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:03:00,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:03:00,902 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:03:00,903 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:00" (1/1) ... [2024-10-23 21:03:00,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:03:00,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:03:00,943 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 21:03:00,947 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 21:03:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:03:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:03:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:03:00,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:03:01,068 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:03:01,070 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:03:02,642 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-10-23 21:03:02,642 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:03:02,690 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:03:02,691 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:03:02,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:03:02 BoogieIcfgContainer [2024-10-23 21:03:02,692 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:03:02,695 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:03:02,695 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:03:02,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:03:02,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:02:59" (1/3) ... [2024-10-23 21:03:02,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f69c150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:03:02, skipping insertion in model container [2024-10-23 21:03:02,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:00" (2/3) ... [2024-10-23 21:03:02,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f69c150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:03:02, skipping insertion in model container [2024-10-23 21:03:02,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:03:02" (3/3) ... [2024-10-23 21:03:02,702 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label35.c [2024-10-23 21:03:02,718 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:03:02,718 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:03:02,789 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:03:02,798 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;@37df4754, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:03:02,799 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:03:02,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states 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 21:03:02,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-23 21:03:02,811 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:02,812 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:02,813 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:02,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:02,819 INFO L85 PathProgramCache]: Analyzing trace with hash 132154064, now seen corresponding path program 1 times [2024-10-23 21:03:02,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:02,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209655054] [2024-10-23 21:03:02,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:02,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:03,010 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 21:03:03,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:03,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209655054] [2024-10-23 21:03:03,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209655054] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:03,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:03,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:03:03,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927758762] [2024-10-23 21:03:03,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:03,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:03:03,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:03,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:03:03,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:03:03,045 INFO L87 Difference]: Start difference. First operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 21:03:03,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:03,103 INFO L93 Difference]: Finished difference Result 441 states and 839 transitions. [2024-10-23 21:03:03,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:03:03,106 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2024-10-23 21:03:03,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:03,114 INFO L225 Difference]: With dead ends: 441 [2024-10-23 21:03:03,115 INFO L226 Difference]: Without dead ends: 219 [2024-10-23 21:03:03,121 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 21:03:03,124 INFO L432 NwaCegarLoop]: 355 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, 355 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 21:03:03,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:03:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-10-23 21:03:03,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2024-10-23 21:03:03,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 21:03:03,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2024-10-23 21:03:03,171 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 57 [2024-10-23 21:03:03,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:03,171 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2024-10-23 21:03:03,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 21:03:03,172 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2024-10-23 21:03:03,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-23 21:03:03,173 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:03,173 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:03,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:03:03,174 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:03,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:03,174 INFO L85 PathProgramCache]: Analyzing trace with hash -930186340, now seen corresponding path program 1 times [2024-10-23 21:03:03,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:03,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120058794] [2024-10-23 21:03:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:03,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:03,397 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 21:03:03,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:03,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120058794] [2024-10-23 21:03:03,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120058794] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:03,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:03,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:03:03,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371044414] [2024-10-23 21:03:03,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:03,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:03:03,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:03,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:03:03,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:03:03,403 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 21:03:04,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:04,279 INFO L93 Difference]: Finished difference Result 630 states and 1029 transitions. [2024-10-23 21:03:04,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:03:04,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2024-10-23 21:03:04,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:04,284 INFO L225 Difference]: With dead ends: 630 [2024-10-23 21:03:04,284 INFO L226 Difference]: Without dead ends: 412 [2024-10-23 21:03:04,285 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 21:03:04,286 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 150 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:04,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 144 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:03:04,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-10-23 21:03:04,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 410. [2024-10-23 21:03:04,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.4596577017114913) internal successors, (597), 409 states have internal predecessors, (597), 0 states have call successors, (0), 0 states 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 21:03:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 597 transitions. [2024-10-23 21:03:04,307 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 597 transitions. Word has length 57 [2024-10-23 21:03:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:04,308 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 597 transitions. [2024-10-23 21:03:04,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 21:03:04,309 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 597 transitions. [2024-10-23 21:03:04,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-10-23 21:03:04,312 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:04,313 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:04,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:03:04,313 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:04,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:04,314 INFO L85 PathProgramCache]: Analyzing trace with hash -951919564, now seen corresponding path program 1 times [2024-10-23 21:03:04,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:04,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005103548] [2024-10-23 21:03:04,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:04,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:03:04,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:04,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005103548] [2024-10-23 21:03:04,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005103548] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:04,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:04,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:03:04,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173038] [2024-10-23 21:03:04,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:04,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:03:04,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:04,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:03:04,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:03:04,534 INFO L87 Difference]: Start difference. First operand 410 states and 597 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 21:03:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:05,234 INFO L93 Difference]: Finished difference Result 1208 states and 1764 transitions. [2024-10-23 21:03:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:03:05,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2024-10-23 21:03:05,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:05,237 INFO L225 Difference]: With dead ends: 1208 [2024-10-23 21:03:05,238 INFO L226 Difference]: Without dead ends: 799 [2024-10-23 21:03:05,239 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 21:03:05,240 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 144 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:05,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 118 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:03:05,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2024-10-23 21:03:05,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 786. [2024-10-23 21:03:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 785 states have (on average 1.3859872611464967) internal successors, (1088), 785 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states 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 21:03:05,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1088 transitions. [2024-10-23 21:03:05,278 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1088 transitions. Word has length 125 [2024-10-23 21:03:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:05,278 INFO L471 AbstractCegarLoop]: Abstraction has 786 states and 1088 transitions. [2024-10-23 21:03:05,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 21:03:05,279 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1088 transitions. [2024-10-23 21:03:05,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-23 21:03:05,281 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:05,281 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:05,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:03:05,282 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:05,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:05,283 INFO L85 PathProgramCache]: Analyzing trace with hash 264706866, now seen corresponding path program 1 times [2024-10-23 21:03:05,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:05,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071213367] [2024-10-23 21:03:05,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:05,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:03:05,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:05,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071213367] [2024-10-23 21:03:05,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071213367] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:05,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:05,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:03:05,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909110079] [2024-10-23 21:03:05,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:05,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:03:05,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:05,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:03:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:03:05,657 INFO L87 Difference]: Start difference. First operand 786 states and 1088 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 21:03:06,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:06,296 INFO L93 Difference]: Finished difference Result 1941 states and 2630 transitions. [2024-10-23 21:03:06,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:03:06,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-10-23 21:03:06,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:06,301 INFO L225 Difference]: With dead ends: 1941 [2024-10-23 21:03:06,301 INFO L226 Difference]: Without dead ends: 1156 [2024-10-23 21:03:06,304 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 21:03:06,308 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 120 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:06,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 188 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 21:03:06,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2024-10-23 21:03:06,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1155. [2024-10-23 21:03:06,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 1.2781629116117852) internal successors, (1475), 1154 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states 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 21:03:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1475 transitions. [2024-10-23 21:03:06,335 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1475 transitions. Word has length 126 [2024-10-23 21:03:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:06,336 INFO L471 AbstractCegarLoop]: Abstraction has 1155 states and 1475 transitions. [2024-10-23 21:03:06,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 21:03:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1475 transitions. [2024-10-23 21:03:06,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-10-23 21:03:06,342 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:06,342 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:03:06,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:03:06,343 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:06,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:06,343 INFO L85 PathProgramCache]: Analyzing trace with hash 649528056, now seen corresponding path program 1 times [2024-10-23 21:03:06,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:06,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218169240] [2024-10-23 21:03:06,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:06,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-23 21:03:06,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:06,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218169240] [2024-10-23 21:03:06,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218169240] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:06,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:06,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:03:06,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872256469] [2024-10-23 21:03:06,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:06,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:03:06,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:06,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:03:06,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:03:06,584 INFO L87 Difference]: Start difference. First operand 1155 states and 1475 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 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 21:03:07,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:07,367 INFO L93 Difference]: Finished difference Result 2501 states and 3338 transitions. [2024-10-23 21:03:07,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:03:07,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 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 169 [2024-10-23 21:03:07,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:07,374 INFO L225 Difference]: With dead ends: 2501 [2024-10-23 21:03:07,374 INFO L226 Difference]: Without dead ends: 1531 [2024-10-23 21:03:07,376 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 21:03:07,378 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 108 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:07,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 154 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:03:07,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2024-10-23 21:03:07,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1531. [2024-10-23 21:03:07,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 1.2620915032679738) internal successors, (1931), 1530 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states 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 21:03:07,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 1931 transitions. [2024-10-23 21:03:07,408 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 1931 transitions. Word has length 169 [2024-10-23 21:03:07,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:07,410 INFO L471 AbstractCegarLoop]: Abstraction has 1531 states and 1931 transitions. [2024-10-23 21:03:07,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 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 21:03:07,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 1931 transitions. [2024-10-23 21:03:07,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-23 21:03:07,414 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:07,414 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:03:07,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:03:07,415 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:07,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:07,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1196936717, now seen corresponding path program 1 times [2024-10-23 21:03:07,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:07,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186578196] [2024-10-23 21:03:07,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:07,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:03:07,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:07,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186578196] [2024-10-23 21:03:07,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186578196] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:07,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:07,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:03:07,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663850088] [2024-10-23 21:03:07,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:07,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:03:07,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:07,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:03:07,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:03:07,666 INFO L87 Difference]: Start difference. First operand 1531 states and 1931 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 21:03:08,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:08,911 INFO L93 Difference]: Finished difference Result 4930 states and 6395 transitions. [2024-10-23 21:03:08,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:03:08,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2024-10-23 21:03:08,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:08,925 INFO L225 Difference]: With dead ends: 4930 [2024-10-23 21:03:08,925 INFO L226 Difference]: Without dead ends: 3584 [2024-10-23 21:03:08,928 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 21:03:08,929 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 336 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:08,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 84 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 21:03:08,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2024-10-23 21:03:08,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 3583. [2024-10-23 21:03:08,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3582 states have (on average 1.254606365159129) internal successors, (4494), 3582 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states 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 21:03:08,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 4494 transitions. [2024-10-23 21:03:08,989 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 4494 transitions. Word has length 184 [2024-10-23 21:03:08,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:08,990 INFO L471 AbstractCegarLoop]: Abstraction has 3583 states and 4494 transitions. [2024-10-23 21:03:08,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 21:03:08,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 4494 transitions. [2024-10-23 21:03:08,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-10-23 21:03:08,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:08,994 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:08,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:03:08,995 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:08,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:08,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1298625936, now seen corresponding path program 1 times [2024-10-23 21:03:08,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:08,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470325755] [2024-10-23 21:03:08,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:08,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:03:09,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:09,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470325755] [2024-10-23 21:03:09,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470325755] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:09,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:09,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:03:09,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802675374] [2024-10-23 21:03:09,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:09,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:03:09,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:09,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:03:09,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:03:09,284 INFO L87 Difference]: Start difference. First operand 3583 states and 4494 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 21:03:10,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:10,082 INFO L93 Difference]: Finished difference Result 8286 states and 10611 transitions. [2024-10-23 21:03:10,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:03:10,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2024-10-23 21:03:10,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:10,098 INFO L225 Difference]: With dead ends: 8286 [2024-10-23 21:03:10,098 INFO L226 Difference]: Without dead ends: 5072 [2024-10-23 21:03:10,103 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 21:03:10,104 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 136 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:10,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 344 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:03:10,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2024-10-23 21:03:10,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 5057. [2024-10-23 21:03:10,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5057 states, 5056 states have (on average 1.2278481012658229) internal successors, (6208), 5056 states have internal predecessors, (6208), 0 states have call successors, (0), 0 states 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 21:03:10,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5057 states to 5057 states and 6208 transitions. [2024-10-23 21:03:10,181 INFO L78 Accepts]: Start accepts. Automaton has 5057 states and 6208 transitions. Word has length 237 [2024-10-23 21:03:10,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:10,182 INFO L471 AbstractCegarLoop]: Abstraction has 5057 states and 6208 transitions. [2024-10-23 21:03:10,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 21:03:10,182 INFO L276 IsEmpty]: Start isEmpty. Operand 5057 states and 6208 transitions. [2024-10-23 21:03:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-10-23 21:03:10,186 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:10,187 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:10,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:03:10,187 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:10,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:10,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1312140630, now seen corresponding path program 1 times [2024-10-23 21:03:10,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:10,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320276980] [2024-10-23 21:03:10,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:10,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-23 21:03:10,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:10,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320276980] [2024-10-23 21:03:10,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320276980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:10,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:10,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:03:10,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263853677] [2024-10-23 21:03:10,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:10,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:03:10,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:10,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:03:10,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:03:10,497 INFO L87 Difference]: Start difference. First operand 5057 states and 6208 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 21:03:11,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:11,215 INFO L93 Difference]: Finished difference Result 11052 states and 13654 transitions. [2024-10-23 21:03:11,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:03:11,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 238 [2024-10-23 21:03:11,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:11,236 INFO L225 Difference]: With dead ends: 11052 [2024-10-23 21:03:11,237 INFO L226 Difference]: Without dead ends: 6364 [2024-10-23 21:03:11,243 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 21:03:11,245 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 144 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:11,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 343 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:03:11,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2024-10-23 21:03:11,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 6345. [2024-10-23 21:03:11,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6345 states, 6344 states have (on average 1.2137452711223202) internal successors, (7700), 6344 states have internal predecessors, (7700), 0 states have call successors, (0), 0 states 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 21:03:11,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6345 states to 6345 states and 7700 transitions. [2024-10-23 21:03:11,343 INFO L78 Accepts]: Start accepts. Automaton has 6345 states and 7700 transitions. Word has length 238 [2024-10-23 21:03:11,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:11,343 INFO L471 AbstractCegarLoop]: Abstraction has 6345 states and 7700 transitions. [2024-10-23 21:03:11,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 21:03:11,343 INFO L276 IsEmpty]: Start isEmpty. Operand 6345 states and 7700 transitions. [2024-10-23 21:03:11,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-10-23 21:03:11,347 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:11,347 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:11,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:03:11,347 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:11,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:11,348 INFO L85 PathProgramCache]: Analyzing trace with hash 667935211, now seen corresponding path program 1 times [2024-10-23 21:03:11,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:11,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609078656] [2024-10-23 21:03:11,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:11,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-23 21:03:11,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:11,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609078656] [2024-10-23 21:03:11,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609078656] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:11,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:11,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:03:11,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702828411] [2024-10-23 21:03:11,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:11,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:03:11,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:11,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:03:11,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:03:11,630 INFO L87 Difference]: Start difference. First operand 6345 states and 7700 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 21:03:12,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:12,466 INFO L93 Difference]: Finished difference Result 13620 states and 16780 transitions. [2024-10-23 21:03:12,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:03:12,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 239 [2024-10-23 21:03:12,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:12,495 INFO L225 Difference]: With dead ends: 13620 [2024-10-23 21:03:12,496 INFO L226 Difference]: Without dead ends: 7644 [2024-10-23 21:03:12,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:03:12,506 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 139 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:12,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 368 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:03:12,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7644 states. [2024-10-23 21:03:12,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7644 to 7449. [2024-10-23 21:03:12,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7449 states, 7448 states have (on average 1.2070354457572503) internal successors, (8990), 7448 states have internal predecessors, (8990), 0 states have call successors, (0), 0 states 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 21:03:12,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7449 states to 7449 states and 8990 transitions. [2024-10-23 21:03:12,666 INFO L78 Accepts]: Start accepts. Automaton has 7449 states and 8990 transitions. Word has length 239 [2024-10-23 21:03:12,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:12,668 INFO L471 AbstractCegarLoop]: Abstraction has 7449 states and 8990 transitions. [2024-10-23 21:03:12,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 21:03:12,668 INFO L276 IsEmpty]: Start isEmpty. Operand 7449 states and 8990 transitions. [2024-10-23 21:03:12,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-10-23 21:03:12,673 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:12,673 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:12,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:03:12,673 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:12,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:12,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2014641799, now seen corresponding path program 1 times [2024-10-23 21:03:12,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:12,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71704494] [2024-10-23 21:03:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:12,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:03:13,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:13,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71704494] [2024-10-23 21:03:13,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71704494] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:13,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:13,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:03:13,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227827470] [2024-10-23 21:03:13,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:13,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:03:13,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:13,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:03:13,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:03:13,140 INFO L87 Difference]: Start difference. First operand 7449 states and 8990 transitions. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 21:03:14,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:14,443 INFO L93 Difference]: Finished difference Result 21200 states and 26190 transitions. [2024-10-23 21:03:14,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:03:14,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 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 259 [2024-10-23 21:03:14,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:14,483 INFO L225 Difference]: With dead ends: 21200 [2024-10-23 21:03:14,484 INFO L226 Difference]: Without dead ends: 14120 [2024-10-23 21:03:14,495 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 21:03:14,497 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 276 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:14,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 191 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 21:03:14,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14120 states. [2024-10-23 21:03:14,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14120 to 12819. [2024-10-23 21:03:14,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12819 states, 12818 states have (on average 1.1994850990794195) internal successors, (15375), 12818 states have internal predecessors, (15375), 0 states have call successors, (0), 0 states 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 21:03:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12819 states to 12819 states and 15375 transitions. [2024-10-23 21:03:14,685 INFO L78 Accepts]: Start accepts. Automaton has 12819 states and 15375 transitions. Word has length 259 [2024-10-23 21:03:14,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:14,686 INFO L471 AbstractCegarLoop]: Abstraction has 12819 states and 15375 transitions. [2024-10-23 21:03:14,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 21:03:14,687 INFO L276 IsEmpty]: Start isEmpty. Operand 12819 states and 15375 transitions. [2024-10-23 21:03:14,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-10-23 21:03:14,693 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:14,693 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:14,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:03:14,693 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:14,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:14,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1469880448, now seen corresponding path program 1 times [2024-10-23 21:03:14,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:14,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866970971] [2024-10-23 21:03:14,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:14,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:15,107 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:03:15,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:15,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866970971] [2024-10-23 21:03:15,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866970971] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:15,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:15,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:03:15,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006835581] [2024-10-23 21:03:15,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:15,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:03:15,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:15,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:03:15,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:03:15,110 INFO L87 Difference]: Start difference. First operand 12819 states and 15375 transitions. Second operand has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states 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 21:03:16,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:16,458 INFO L93 Difference]: Finished difference Result 30436 states and 37140 transitions. [2024-10-23 21:03:16,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:03:16,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 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 21:03:16,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:16,489 INFO L225 Difference]: With dead ends: 30436 [2024-10-23 21:03:16,489 INFO L226 Difference]: Without dead ends: 17986 [2024-10-23 21:03:16,504 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 21:03:16,505 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 286 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:16,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 117 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 21:03:16,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17986 states. [2024-10-23 21:03:16,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17986 to 17972. [2024-10-23 21:03:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17972 states, 17971 states have (on average 1.2047187134828334) internal successors, (21650), 17971 states have internal predecessors, (21650), 0 states have call successors, (0), 0 states 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 21:03:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17972 states to 17972 states and 21650 transitions. [2024-10-23 21:03:16,757 INFO L78 Accepts]: Start accepts. Automaton has 17972 states and 21650 transitions. Word has length 269 [2024-10-23 21:03:16,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:16,757 INFO L471 AbstractCegarLoop]: Abstraction has 17972 states and 21650 transitions. [2024-10-23 21:03:16,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states 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 21:03:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 17972 states and 21650 transitions. [2024-10-23 21:03:16,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-10-23 21:03:16,765 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:16,766 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:16,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:03:16,767 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:16,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:16,767 INFO L85 PathProgramCache]: Analyzing trace with hash -200048695, now seen corresponding path program 1 times [2024-10-23 21:03:16,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:16,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496738389] [2024-10-23 21:03:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:16,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-23 21:03:17,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:17,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496738389] [2024-10-23 21:03:17,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496738389] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:17,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:17,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:03:17,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573473891] [2024-10-23 21:03:17,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:17,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:03:17,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:03:17,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:03:17,036 INFO L87 Difference]: Start difference. First operand 17972 states and 21650 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 21:03:17,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:17,809 INFO L93 Difference]: Finished difference Result 35769 states and 43130 transitions. [2024-10-23 21:03:17,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:03:17,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 276 [2024-10-23 21:03:17,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:17,840 INFO L225 Difference]: With dead ends: 35769 [2024-10-23 21:03:17,841 INFO L226 Difference]: Without dead ends: 17982 [2024-10-23 21:03:17,861 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 21:03:17,862 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 143 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:17,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 376 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:03:17,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17982 states. [2024-10-23 21:03:18,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17982 to 17971. [2024-10-23 21:03:18,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17971 states, 17970 states have (on average 1.1678352810239288) internal successors, (20986), 17970 states have internal predecessors, (20986), 0 states have call successors, (0), 0 states 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 21:03:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17971 states to 17971 states and 20986 transitions. [2024-10-23 21:03:18,150 INFO L78 Accepts]: Start accepts. Automaton has 17971 states and 20986 transitions. Word has length 276 [2024-10-23 21:03:18,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:18,151 INFO L471 AbstractCegarLoop]: Abstraction has 17971 states and 20986 transitions. [2024-10-23 21:03:18,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 21:03:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 17971 states and 20986 transitions. [2024-10-23 21:03:18,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-10-23 21:03:18,162 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:18,162 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:18,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:03:18,163 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:18,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:18,163 INFO L85 PathProgramCache]: Analyzing trace with hash -178019664, now seen corresponding path program 1 times [2024-10-23 21:03:18,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:18,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351382091] [2024-10-23 21:03:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:18,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 167 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:03:18,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:18,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351382091] [2024-10-23 21:03:18,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351382091] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:03:18,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787357750] [2024-10-23 21:03:18,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:18,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:03:18,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:03:18,891 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 21:03:18,892 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 21:03:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:19,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:03:19,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:03:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:03:19,571 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:03:19,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787357750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:19,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:03:19,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:03:19,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921458559] [2024-10-23 21:03:19,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:19,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:03:19,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:19,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:03:19,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:03:19,574 INFO L87 Difference]: Start difference. First operand 17971 states and 20986 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states 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 21:03:20,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:20,436 INFO L93 Difference]: Finished difference Result 33179 states and 38910 transitions. [2024-10-23 21:03:20,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:03:20,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 290 [2024-10-23 21:03:20,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:20,463 INFO L225 Difference]: With dead ends: 33179 [2024-10-23 21:03:20,464 INFO L226 Difference]: Without dead ends: 17979 [2024-10-23 21:03:20,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:03:20,474 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 191 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:20,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 162 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:03:20,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17979 states. [2024-10-23 21:03:20,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17979 to 17971. [2024-10-23 21:03:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17971 states, 17970 states have (on average 1.1658319421257652) internal successors, (20950), 17970 states have internal predecessors, (20950), 0 states have call successors, (0), 0 states 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 21:03:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17971 states to 17971 states and 20950 transitions. [2024-10-23 21:03:20,667 INFO L78 Accepts]: Start accepts. Automaton has 17971 states and 20950 transitions. Word has length 290 [2024-10-23 21:03:20,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:20,668 INFO L471 AbstractCegarLoop]: Abstraction has 17971 states and 20950 transitions. [2024-10-23 21:03:20,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states 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 21:03:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 17971 states and 20950 transitions. [2024-10-23 21:03:20,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-10-23 21:03:20,679 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:20,679 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:20,698 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 21:03:20,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-23 21:03:20,880 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:20,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:20,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2004563935, now seen corresponding path program 1 times [2024-10-23 21:03:20,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:20,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954107037] [2024-10-23 21:03:20,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:20,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2024-10-23 21:03:21,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:21,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954107037] [2024-10-23 21:03:21,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954107037] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:21,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:21,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:03:21,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166375720] [2024-10-23 21:03:21,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:21,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:03:21,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:21,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:03:21,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:03:21,070 INFO L87 Difference]: Start difference. First operand 17971 states and 20950 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 21:03:21,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:21,816 INFO L93 Difference]: Finished difference Result 37949 states and 44595 transitions. [2024-10-23 21:03:21,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:03:21,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 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 316 [2024-10-23 21:03:21,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:21,841 INFO L225 Difference]: With dead ends: 37949 [2024-10-23 21:03:21,842 INFO L226 Difference]: Without dead ends: 20347 [2024-10-23 21:03:21,858 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 21:03:21,858 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 126 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:21,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 151 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:03:21,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20347 states. [2024-10-23 21:03:22,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20347 to 17028. [2024-10-23 21:03:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17028 states, 17027 states have (on average 1.1329652904210958) internal successors, (19291), 17027 states have internal predecessors, (19291), 0 states have call successors, (0), 0 states 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 21:03:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17028 states to 17028 states and 19291 transitions. [2024-10-23 21:03:22,045 INFO L78 Accepts]: Start accepts. Automaton has 17028 states and 19291 transitions. Word has length 316 [2024-10-23 21:03:22,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:22,046 INFO L471 AbstractCegarLoop]: Abstraction has 17028 states and 19291 transitions. [2024-10-23 21:03:22,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 21:03:22,046 INFO L276 IsEmpty]: Start isEmpty. Operand 17028 states and 19291 transitions. [2024-10-23 21:03:22,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-10-23 21:03:22,054 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:22,054 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:22,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 21:03:22,055 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:22,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:22,055 INFO L85 PathProgramCache]: Analyzing trace with hash 691367451, now seen corresponding path program 1 times [2024-10-23 21:03:22,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:22,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183805148] [2024-10-23 21:03:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:22,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-10-23 21:03:22,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:22,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183805148] [2024-10-23 21:03:22,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183805148] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:22,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:22,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:03:22,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093710094] [2024-10-23 21:03:22,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:22,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:03:22,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:22,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:03:22,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:03:22,311 INFO L87 Difference]: Start difference. First operand 17028 states and 19291 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 21:03:22,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:22,906 INFO L93 Difference]: Finished difference Result 35706 states and 40461 transitions. [2024-10-23 21:03:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:03:22,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 324 [2024-10-23 21:03:22,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:22,936 INFO L225 Difference]: With dead ends: 35706 [2024-10-23 21:03:22,936 INFO L226 Difference]: Without dead ends: 21075 [2024-10-23 21:03:22,951 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 21:03:22,952 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 163 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:22,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 149 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:03:22,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21075 states. [2024-10-23 21:03:23,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21075 to 17395. [2024-10-23 21:03:23,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17395 states, 17394 states have (on average 1.1333793262044383) internal successors, (19714), 17394 states have internal predecessors, (19714), 0 states have call successors, (0), 0 states 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 21:03:23,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17395 states to 17395 states and 19714 transitions. [2024-10-23 21:03:23,257 INFO L78 Accepts]: Start accepts. Automaton has 17395 states and 19714 transitions. Word has length 324 [2024-10-23 21:03:23,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:23,258 INFO L471 AbstractCegarLoop]: Abstraction has 17395 states and 19714 transitions. [2024-10-23 21:03:23,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 21:03:23,259 INFO L276 IsEmpty]: Start isEmpty. Operand 17395 states and 19714 transitions. [2024-10-23 21:03:23,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-10-23 21:03:23,266 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:23,266 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 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 21:03:23,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:03:23,267 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:23,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:23,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1079468631, now seen corresponding path program 1 times [2024-10-23 21:03:23,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:23,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950946506] [2024-10-23 21:03:23,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:23,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-23 21:03:23,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:23,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950946506] [2024-10-23 21:03:23,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950946506] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:23,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:23,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:03:23,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518923190] [2024-10-23 21:03:23,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:23,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:03:23,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:23,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:03:23,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:03:23,843 INFO L87 Difference]: Start difference. First operand 17395 states and 19714 transitions. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:03:24,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:24,855 INFO L93 Difference]: Finished difference Result 40532 states and 46167 transitions. [2024-10-23 21:03:24,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:03:24,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 328 [2024-10-23 21:03:24,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:24,883 INFO L225 Difference]: With dead ends: 40532 [2024-10-23 21:03:24,884 INFO L226 Difference]: Without dead ends: 24793 [2024-10-23 21:03:24,899 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 21:03:24,900 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 290 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:24,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 391 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:03:24,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24793 states. [2024-10-23 21:03:25,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24793 to 20351. [2024-10-23 21:03:25,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20351 states, 20350 states have (on average 1.122899262899263) internal successors, (22851), 20350 states have internal predecessors, (22851), 0 states have call successors, (0), 0 states 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 21:03:25,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20351 states to 20351 states and 22851 transitions. [2024-10-23 21:03:25,193 INFO L78 Accepts]: Start accepts. Automaton has 20351 states and 22851 transitions. Word has length 328 [2024-10-23 21:03:25,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:25,194 INFO L471 AbstractCegarLoop]: Abstraction has 20351 states and 22851 transitions. [2024-10-23 21:03:25,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:03:25,194 INFO L276 IsEmpty]: Start isEmpty. Operand 20351 states and 22851 transitions. [2024-10-23 21:03:25,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-10-23 21:03:25,201 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:25,202 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:25,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:03:25,202 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:25,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:25,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1607525202, now seen corresponding path program 1 times [2024-10-23 21:03:25,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:25,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156540146] [2024-10-23 21:03:25,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:25,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:03:25,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:25,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156540146] [2024-10-23 21:03:25,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156540146] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:25,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:25,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:03:25,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356969020] [2024-10-23 21:03:25,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:25,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:03:25,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:25,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:03:25,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:03:25,709 INFO L87 Difference]: Start difference. First operand 20351 states and 22851 transitions. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 21:03:26,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:26,817 INFO L93 Difference]: Finished difference Result 46789 states and 52588 transitions. [2024-10-23 21:03:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:03:26,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 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 337 [2024-10-23 21:03:26,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:26,851 INFO L225 Difference]: With dead ends: 46789 [2024-10-23 21:03:26,851 INFO L226 Difference]: Without dead ends: 26807 [2024-10-23 21:03:26,870 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 21:03:26,871 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 157 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:26,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 113 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 21:03:26,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26807 states. [2024-10-23 21:03:27,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26807 to 25511. [2024-10-23 21:03:27,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25511 states, 25510 states have (on average 1.1172089376715013) internal successors, (28500), 25510 states have internal predecessors, (28500), 0 states have call successors, (0), 0 states 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 21:03:27,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25511 states to 25511 states and 28500 transitions. [2024-10-23 21:03:27,234 INFO L78 Accepts]: Start accepts. Automaton has 25511 states and 28500 transitions. Word has length 337 [2024-10-23 21:03:27,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:27,234 INFO L471 AbstractCegarLoop]: Abstraction has 25511 states and 28500 transitions. [2024-10-23 21:03:27,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 21:03:27,235 INFO L276 IsEmpty]: Start isEmpty. Operand 25511 states and 28500 transitions. [2024-10-23 21:03:27,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-10-23 21:03:27,242 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:27,243 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 21:03:27,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 21:03:27,243 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:27,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:27,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1464130001, now seen corresponding path program 1 times [2024-10-23 21:03:27,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:27,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953051747] [2024-10-23 21:03:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:27,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 174 proven. 167 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-23 21:03:28,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:28,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953051747] [2024-10-23 21:03:28,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953051747] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:03:28,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181404052] [2024-10-23 21:03:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:28,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:03:28,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:03:28,344 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 21:03:28,347 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 21:03:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:28,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:03:28,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:03:29,052 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-23 21:03:29,052 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:03:29,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181404052] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:29,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:03:29,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:03:29,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360603077] [2024-10-23 21:03:29,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:29,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:03:29,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:29,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:03:29,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:03:29,055 INFO L87 Difference]: Start difference. First operand 25511 states and 28500 transitions. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:03:30,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:30,037 INFO L93 Difference]: Finished difference Result 48629 states and 54359 transitions. [2024-10-23 21:03:30,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:03:30,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2024-10-23 21:03:30,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:30,064 INFO L225 Difference]: With dead ends: 48629 [2024-10-23 21:03:30,064 INFO L226 Difference]: Without dead ends: 25883 [2024-10-23 21:03:30,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:03:30,084 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 192 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:30,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 173 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:03:30,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25883 states. [2024-10-23 21:03:30,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25883 to 25143. [2024-10-23 21:03:30,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25143 states, 25142 states have (on average 1.1167767082968738) internal successors, (28078), 25142 states have internal predecessors, (28078), 0 states have call successors, (0), 0 states 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 21:03:30,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25143 states to 25143 states and 28078 transitions. [2024-10-23 21:03:30,467 INFO L78 Accepts]: Start accepts. Automaton has 25143 states and 28078 transitions. Word has length 344 [2024-10-23 21:03:30,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:30,467 INFO L471 AbstractCegarLoop]: Abstraction has 25143 states and 28078 transitions. [2024-10-23 21:03:30,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:03:30,467 INFO L276 IsEmpty]: Start isEmpty. Operand 25143 states and 28078 transitions. [2024-10-23 21:03:30,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-10-23 21:03:30,474 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:30,475 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 21:03:30,487 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 21:03:30,675 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,SelfDestructingSolverStorable17 [2024-10-23 21:03:30,676 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:30,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:30,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1656872182, now seen corresponding path program 1 times [2024-10-23 21:03:30,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:30,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295412574] [2024-10-23 21:03:30,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:30,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-23 21:03:31,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:31,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295412574] [2024-10-23 21:03:31,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295412574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:31,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:31,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:03:31,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153737457] [2024-10-23 21:03:31,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:31,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:03:31,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:31,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:03:31,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:03:31,166 INFO L87 Difference]: Start difference. First operand 25143 states and 28078 transitions. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states 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 21:03:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:32,130 INFO L93 Difference]: Finished difference Result 53249 states and 59453 transitions. [2024-10-23 21:03:32,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:03:32,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 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 366 [2024-10-23 21:03:32,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:32,165 INFO L225 Difference]: With dead ends: 53249 [2024-10-23 21:03:32,165 INFO L226 Difference]: Without dead ends: 30130 [2024-10-23 21:03:32,180 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 21:03:32,181 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 292 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:32,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 344 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:03:32,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30130 states. [2024-10-23 21:03:32,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30130 to 22541. [2024-10-23 21:03:32,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22541 states, 22540 states have (on average 1.108740017746229) internal successors, (24991), 22540 states have internal predecessors, (24991), 0 states have call successors, (0), 0 states 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 21:03:32,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22541 states to 22541 states and 24991 transitions. [2024-10-23 21:03:32,469 INFO L78 Accepts]: Start accepts. Automaton has 22541 states and 24991 transitions. Word has length 366 [2024-10-23 21:03:32,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:32,469 INFO L471 AbstractCegarLoop]: Abstraction has 22541 states and 24991 transitions. [2024-10-23 21:03:32,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states 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 21:03:32,469 INFO L276 IsEmpty]: Start isEmpty. Operand 22541 states and 24991 transitions. [2024-10-23 21:03:32,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-10-23 21:03:32,476 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:32,476 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:32,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-23 21:03:32,476 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:32,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:32,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1480452852, now seen corresponding path program 1 times [2024-10-23 21:03:32,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:32,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276389504] [2024-10-23 21:03:32,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:32,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-10-23 21:03:32,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:32,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276389504] [2024-10-23 21:03:32,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276389504] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:03:32,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612981157] [2024-10-23 21:03:32,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:32,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:03:32,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:03:32,912 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 21:03:32,914 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 21:03:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:33,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:03:33,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:03:33,483 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-10-23 21:03:33,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:03:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-10-23 21:03:36,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612981157] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 21:03:36,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 21:03:36,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-23 21:03:36,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043063815] [2024-10-23 21:03:36,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 21:03:36,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-23 21:03:36,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:36,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-23 21:03:36,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:03:36,184 INFO L87 Difference]: Start difference. First operand 22541 states and 24991 transitions. Second operand has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states 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 21:03:38,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:38,548 INFO L93 Difference]: Finished difference Result 50244 states and 55684 transitions. [2024-10-23 21:03:38,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-23 21:03:38,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 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 375 [2024-10-23 21:03:38,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:38,584 INFO L225 Difference]: With dead ends: 50244 [2024-10-23 21:03:38,584 INFO L226 Difference]: Without dead ends: 30284 [2024-10-23 21:03:38,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 746 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:03:38,603 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 342 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 3220 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 3358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 3220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:38,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 251 Invalid, 3358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 3220 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:03:38,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30284 states. [2024-10-23 21:03:38,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30284 to 21056. [2024-10-23 21:03:38,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21056 states, 21055 states have (on average 1.1078128710520065) internal successors, (23325), 21055 states have internal predecessors, (23325), 0 states have call successors, (0), 0 states 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 21:03:38,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21056 states to 21056 states and 23325 transitions. [2024-10-23 21:03:38,917 INFO L78 Accepts]: Start accepts. Automaton has 21056 states and 23325 transitions. Word has length 375 [2024-10-23 21:03:38,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:38,917 INFO L471 AbstractCegarLoop]: Abstraction has 21056 states and 23325 transitions. [2024-10-23 21:03:38,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states 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 21:03:38,918 INFO L276 IsEmpty]: Start isEmpty. Operand 21056 states and 23325 transitions. [2024-10-23 21:03:38,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-10-23 21:03:38,927 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:38,927 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 21:03:38,940 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 21:03:39,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:03:39,128 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:39,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:39,129 INFO L85 PathProgramCache]: Analyzing trace with hash 110242664, now seen corresponding path program 1 times [2024-10-23 21:03:39,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:39,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881608172] [2024-10-23 21:03:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:39,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:39,687 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-10-23 21:03:39,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:39,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881608172] [2024-10-23 21:03:39,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881608172] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:39,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:39,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:03:39,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078093716] [2024-10-23 21:03:39,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:39,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:03:39,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:39,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:03:39,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:03:39,690 INFO L87 Difference]: Start difference. First operand 21056 states and 23325 transitions. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 21:03:40,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:40,435 INFO L93 Difference]: Finished difference Result 41194 states and 45600 transitions. [2024-10-23 21:03:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:03:40,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 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 379 [2024-10-23 21:03:40,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:40,457 INFO L225 Difference]: With dead ends: 41194 [2024-10-23 21:03:40,457 INFO L226 Difference]: Without dead ends: 22719 [2024-10-23 21:03:40,469 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 21:03:40,469 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 297 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:40,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 51 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 21:03:40,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22719 states. [2024-10-23 21:03:40,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22719 to 20131. [2024-10-23 21:03:40,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20131 states, 20130 states have (on average 1.1044709388971683) internal successors, (22233), 20130 states have internal predecessors, (22233), 0 states have call successors, (0), 0 states 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 21:03:40,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20131 states to 20131 states and 22233 transitions. [2024-10-23 21:03:40,648 INFO L78 Accepts]: Start accepts. Automaton has 20131 states and 22233 transitions. Word has length 379 [2024-10-23 21:03:40,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:40,649 INFO L471 AbstractCegarLoop]: Abstraction has 20131 states and 22233 transitions. [2024-10-23 21:03:40,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 21:03:40,649 INFO L276 IsEmpty]: Start isEmpty. Operand 20131 states and 22233 transitions. [2024-10-23 21:03:40,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2024-10-23 21:03:40,666 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:40,666 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:40,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-23 21:03:40,667 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:40,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:40,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1026710330, now seen corresponding path program 1 times [2024-10-23 21:03:40,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:40,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946431012] [2024-10-23 21:03:40,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:40,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:41,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 629 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-10-23 21:03:41,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:41,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946431012] [2024-10-23 21:03:41,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946431012] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:41,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:41,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:03:41,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102770787] [2024-10-23 21:03:41,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:41,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:03:41,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:41,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:03:41,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:03:41,033 INFO L87 Difference]: Start difference. First operand 20131 states and 22233 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 21:03:41,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:41,605 INFO L93 Difference]: Finished difference Result 38805 states and 42835 transitions. [2024-10-23 21:03:41,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:03:41,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 573 [2024-10-23 21:03:41,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:41,630 INFO L225 Difference]: With dead ends: 38805 [2024-10-23 21:03:41,630 INFO L226 Difference]: Without dead ends: 20887 [2024-10-23 21:03:41,643 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 21:03:41,644 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 101 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:41,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 146 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:03:41,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20887 states. [2024-10-23 21:03:41,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20887 to 19947. [2024-10-23 21:03:41,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19947 states, 19946 states have (on average 1.0968113907550385) internal successors, (21877), 19946 states have internal predecessors, (21877), 0 states have call successors, (0), 0 states 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 21:03:41,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19947 states to 19947 states and 21877 transitions. [2024-10-23 21:03:41,915 INFO L78 Accepts]: Start accepts. Automaton has 19947 states and 21877 transitions. Word has length 573 [2024-10-23 21:03:41,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:41,916 INFO L471 AbstractCegarLoop]: Abstraction has 19947 states and 21877 transitions. [2024-10-23 21:03:41,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 21:03:41,916 INFO L276 IsEmpty]: Start isEmpty. Operand 19947 states and 21877 transitions. [2024-10-23 21:03:41,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-10-23 21:03:41,937 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:03:41,937 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:41,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-23 21:03:41,938 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:03:41,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:03:41,938 INFO L85 PathProgramCache]: Analyzing trace with hash -272469153, now seen corresponding path program 1 times [2024-10-23 21:03:41,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:03:41,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904735395] [2024-10-23 21:03:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:03:41,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:03:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:03:42,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 629 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-10-23 21:03:42,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:03:42,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904735395] [2024-10-23 21:03:42,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904735395] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:03:42,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:03:42,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:03:42,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168781668] [2024-10-23 21:03:42,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:03:42,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:03:42,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:03:42,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:03:42,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:03:42,254 INFO L87 Difference]: Start difference. First operand 19947 states and 21877 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states 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 21:03:42,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:03:42,798 INFO L93 Difference]: Finished difference Result 40808 states and 44750 transitions. [2024-10-23 21:03:42,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:03:42,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 574 [2024-10-23 21:03:42,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:03:42,801 INFO L225 Difference]: With dead ends: 40808 [2024-10-23 21:03:42,801 INFO L226 Difference]: Without dead ends: 0 [2024-10-23 21:03:42,815 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 21:03:42,816 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 100 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:03:42,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 128 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:03:42,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-23 21:03:42,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-23 21:03:42,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:03:42,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-23 21:03:42,818 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 574 [2024-10-23 21:03:42,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:03:42,819 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-23 21:03:42,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states 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 21:03:42,819 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-23 21:03:42,819 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-23 21:03:42,822 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-23 21:03:42,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-23 21:03:42,825 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:03:42,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-23 21:03:49,521 WARN L286 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 600 DAG size of output: 691 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-10-23 21:03:52,678 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-23 21:03:52,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:03:52 BoogieIcfgContainer [2024-10-23 21:03:52,700 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-23 21:03:52,701 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-23 21:03:52,701 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-23 21:03:52,701 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-23 21:03:52,702 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:03:02" (3/4) ... [2024-10-23 21:03:52,704 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-23 21:03:52,729 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-23 21:03:52,731 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-23 21:03:52,732 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-23 21:03:52,733 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-23 21:03:52,909 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-23 21:03:52,909 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-23 21:03:52,909 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-23 21:03:52,910 INFO L158 Benchmark]: Toolchain (without parser) took 53162.99ms. Allocated memory was 174.1MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 114.0MB in the beginning and 924.9MB in the end (delta: -810.9MB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-10-23 21:03:52,910 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 174.1MB. Free memory is still 140.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 21:03:52,910 INFO L158 Benchmark]: CACSL2BoogieTranslator took 814.92ms. Allocated memory was 174.1MB in the beginning and 234.9MB in the end (delta: 60.8MB). Free memory was 113.7MB in the beginning and 194.3MB in the end (delta: -80.7MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. [2024-10-23 21:03:52,911 INFO L158 Benchmark]: Boogie Procedure Inliner took 129.42ms. Allocated memory is still 234.9MB. Free memory was 194.3MB in the beginning and 176.5MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-23 21:03:52,911 INFO L158 Benchmark]: Boogie Preprocessor took 205.02ms. Allocated memory is still 234.9MB. Free memory was 176.5MB in the beginning and 151.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-23 21:03:52,911 INFO L158 Benchmark]: RCFGBuilder took 1790.23ms. Allocated memory is still 234.9MB. Free memory was 151.4MB in the beginning and 164.7MB in the end (delta: -13.3MB). Peak memory consumption was 80.6MB. Max. memory is 16.1GB. [2024-10-23 21:03:52,911 INFO L158 Benchmark]: TraceAbstraction took 50005.66ms. Allocated memory was 234.9MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 163.6MB in the beginning and 942.7MB in the end (delta: -779.1MB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2024-10-23 21:03:52,912 INFO L158 Benchmark]: Witness Printer took 208.59ms. Allocated memory is still 2.3GB. Free memory was 941.7MB in the beginning and 924.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-23 21:03:52,913 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 174.1MB. Free memory is still 140.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 814.92ms. Allocated memory was 174.1MB in the beginning and 234.9MB in the end (delta: 60.8MB). Free memory was 113.7MB in the beginning and 194.3MB in the end (delta: -80.7MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 129.42ms. Allocated memory is still 234.9MB. Free memory was 194.3MB in the beginning and 176.5MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 205.02ms. Allocated memory is still 234.9MB. Free memory was 176.5MB in the beginning and 151.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1790.23ms. Allocated memory is still 234.9MB. Free memory was 151.4MB in the beginning and 164.7MB in the end (delta: -13.3MB). Peak memory consumption was 80.6MB. Max. memory is 16.1GB. * TraceAbstraction took 50005.66ms. Allocated memory was 234.9MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 163.6MB in the beginning and 942.7MB in the end (delta: -779.1MB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. * Witness Printer took 208.59ms. Allocated memory is still 2.3GB. Free memory was 941.7MB in the beginning and 924.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 190]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.1s, OverallIterations: 23, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 21.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4233 SdHoareTripleChecker+Valid, 18.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4233 mSDsluCounter, 4841 SdHoareTripleChecker+Invalid, 15.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 749 mSDsCounter, 2393 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18824 IncrementalHoareTripleChecker+Invalid, 21217 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2393 mSolverCounterUnsat, 4092 mSDtfsCounter, 18824 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1451 GetRequests, 1409 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25511occurred in iteration=17, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.0s AutomataMinimizationTime, 23 MinimizatonAttempts, 35402 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 11.6s InterpolantComputationTime, 7451 NumberOfCodeBlocks, 7451 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 7799 ConstructedInterpolants, 0 QuantifiedInterpolants, 31533 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1358 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 27 InterpolantComputations, 22 PerfectInterpolantSequences, 7411/7944 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1044]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((a29 <= 599999) && ((((((((a29 <= 275) && (a25 <= 10)) && (a23 <= 262)) && (a4 == 1)) && (130 <= a29)) || ((a25 == 13) && (a4 == 1))) || (((((long long) a23 + 43) <= 0) && (a25 <= 10)) && (a4 == 1))) || (((a25 == 9) && (a4 == 1)) && (130 <= a29)))) || (((((long long) a23 + 43) <= 0) && (a29 <= 599999)) && (a25 == 9))) || (((a29 <= 140) && (a23 <= 262)) && (a25 == 9))) || ((((a25 == 12) && (a29 <= 599999)) && (a4 == 1)) && (130 <= a29))) || (((a25 == 11) && (((long long) a29 + 275824) <= 0)) && (a4 == 1))) || (((a29 <= 275) && (a25 == 12)) && (130 <= a29))) || ((((307 <= a23) && (a29 <= 599999)) && (a4 == 1)) && (a25 == 10))) || (((((long long) a23 + 43) <= 0) && (a25 == 11)) && (a29 <= 130))) || ((((a29 <= 140) && (a25 == 9)) && (a4 == 1)) && (a23 <= 312))) || (((a25 == 12) && (a29 <= 599999)) && (a23 <= 137))) || ((((a25 == 13) && (((long long) a23 + 43) <= 0)) && (a29 <= 275)) && (130 <= a29))) || (((a29 <= 140) && (a23 <= 262)) && (a25 == 10))) || ((((a25 == 11) && (a29 <= 599999)) && (a4 == 1)) && (130 <= a29))) || (((a29 <= 275) && (a4 == 1)) && (a25 == 10))) || (((a25 == 13) && (((long long) 35913 + a29) <= 0)) && (a23 <= 137))) || ((((a29 <= 275) && (a25 == 11)) && (a23 <= 262)) && (130 <= a29))) || ((a25 == 10) && (a29 <= 130))) || (((((long long) a23 + 127601) <= 0) && (a25 == 11)) && (a29 <= 599999))) || ((((a25 == 11) && (a29 <= 599999)) && (a4 == 1)) && (a23 <= 312))) || (((((300138 <= a29) && (307 <= a23)) && (a25 <= 10)) && (a29 <= 599999)) && (a4 == 1))) || ((a29 <= 599999) && ((((a25 == 12) && (a23 <= 262)) && (a4 == 1)) || ((((a25 <= 10) && (a29 <= 220)) && (a4 == 1)) && (a23 <= 137))))) || (((a25 == 11) && (a4 == 1)) && (a23 <= 137))) || ((a25 == 12) && (((long long) a29 + 275824) <= 0))) RESULT: Ultimate proved your program to be correct! [2024-10-23 21:03:52,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE