./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label54.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/eca-rers2012/Problem17_label54.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 11e41592a4a90a36b9d41c817b9251e7ae28a6a8e3ac5da0511d1aedc7736ffe --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 11:42:07,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 11:42:07,955 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 11:42:07,963 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 11:42:07,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 11:42:07,997 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 11:42:07,998 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 11:42:07,998 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 11:42:07,998 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 11:42:07,999 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 11:42:07,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 11:42:07,999 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 11:42:07,999 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 11:42:08,000 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 11:42:08,000 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 11:42:08,000 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 11:42:08,000 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 11:42:08,001 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 11:42:08,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 11:42:08,002 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 11:42:08,003 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 11:42:08,005 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 11:42:08,005 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 11:42:08,006 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 11:42:08,006 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 11:42:08,006 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 11:42:08,006 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 11:42:08,006 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 11:42:08,006 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 11:42:08,007 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 11:42:08,007 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 11:42:08,007 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 11:42:08,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:42:08,007 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 11:42:08,007 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 11:42:08,007 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 11:42:08,008 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 11:42:08,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 11:42:08,008 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 11:42:08,008 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 11:42:08,009 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 11:42:08,010 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 11:42:08,010 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11e41592a4a90a36b9d41c817b9251e7ae28a6a8e3ac5da0511d1aedc7736ffe [2024-11-08 11:42:08,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 11:42:08,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 11:42:08,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 11:42:08,233 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 11:42:08,234 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 11:42:08,235 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label54.c [2024-11-08 11:42:09,477 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 11:42:09,790 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 11:42:09,791 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label54.c [2024-11-08 11:42:09,818 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b3e4c70c/b30a6642471e40fba7c940e85bbc0278/FLAG482956dc7 [2024-11-08 11:42:09,832 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b3e4c70c/b30a6642471e40fba7c940e85bbc0278 [2024-11-08 11:42:09,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 11:42:09,836 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 11:42:09,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 11:42:09,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 11:42:09,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 11:42:09,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:42:09" (1/1) ... [2024-11-08 11:42:09,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb41b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:42:09, skipping insertion in model container [2024-11-08 11:42:09,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:42:09" (1/1) ... [2024-11-08 11:42:09,908 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 11:42:10,077 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label54.c[2072,2085] [2024-11-08 11:42:10,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:42:10,549 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 11:42:10,560 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label54.c[2072,2085] [2024-11-08 11:42:10,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:42:10,753 INFO L204 MainTranslator]: Completed translation [2024-11-08 11:42:10,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:42:10 WrapperNode [2024-11-08 11:42:10,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 11:42:10,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 11:42:10,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 11:42:10,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 11:42:10,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:42:10" (1/1) ... [2024-11-08 11:42:10,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:42:10" (1/1) ... [2024-11-08 11:42:10,974 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-08 11:42:10,975 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 11:42:10,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 11:42:10,976 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 11:42:10,976 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 11:42:10,984 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:42:10" (1/1) ... [2024-11-08 11:42:10,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:42:10" (1/1) ... [2024-11-08 11:42:11,082 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:42:10" (1/1) ... [2024-11-08 11:42:11,181 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]. [2024-11-08 11:42:11,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:42:10" (1/1) ... [2024-11-08 11:42:11,181 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:42:10" (1/1) ... [2024-11-08 11:42:11,260 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:42:10" (1/1) ... [2024-11-08 11:42:11,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:42:10" (1/1) ... [2024-11-08 11:42:11,307 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:42:10" (1/1) ... [2024-11-08 11:42:11,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:42:10" (1/1) ... [2024-11-08 11:42:11,386 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 11:42:11,389 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 11:42:11,389 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 11:42:11,389 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 11:42:11,390 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:42:10" (1/1) ... [2024-11-08 11:42:11,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:42:11,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:42:11,416 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) [2024-11-08 11:42:11,417 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 [2024-11-08 11:42:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 11:42:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 11:42:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 11:42:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 11:42:11,501 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 11:42:11,503 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 11:42:14,178 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-08 11:42:14,178 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 11:42:14,208 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 11:42:14,208 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 11:42:14,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:42:14 BoogieIcfgContainer [2024-11-08 11:42:14,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 11:42:14,213 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 11:42:14,213 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 11:42:14,216 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 11:42:14,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 11:42:09" (1/3) ... [2024-11-08 11:42:14,216 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aaa3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:42:14, skipping insertion in model container [2024-11-08 11:42:14,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:42:10" (2/3) ... [2024-11-08 11:42:14,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aaa3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:42:14, skipping insertion in model container [2024-11-08 11:42:14,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:42:14" (3/3) ... [2024-11-08 11:42:14,218 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label54.c [2024-11-08 11:42:14,232 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 11:42:14,232 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 11:42:14,309 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 11:42:14,316 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;@79117def, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 11:42:14,316 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 11:42:14,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:14,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 11:42:14,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:14,330 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:14,331 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:14,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:14,337 INFO L85 PathProgramCache]: Analyzing trace with hash -461255479, now seen corresponding path program 1 times [2024-11-08 11:42:14,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:14,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535637714] [2024-11-08 11:42:14,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:14,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:42:14,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:14,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535637714] [2024-11-08 11:42:14,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535637714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:42:14,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:42:14,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:42:14,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524916358] [2024-11-08 11:42:14,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:14,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:42:14,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:14,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:42:14,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:42:14,583 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:16,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:16,676 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2024-11-08 11:42:16,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:42:16,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2024-11-08 11:42:16,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:16,696 INFO L225 Difference]: With dead ends: 1667 [2024-11-08 11:42:16,697 INFO L226 Difference]: Without dead ends: 998 [2024-11-08 11:42:16,701 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 [2024-11-08 11:42:16,707 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 532 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:16,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 11:42:16,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-08 11:42:16,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2024-11-08 11:42:16,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:16,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2024-11-08 11:42:16,777 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 13 [2024-11-08 11:42:16,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:16,778 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2024-11-08 11:42:16,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2024-11-08 11:42:16,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 11:42:16,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:16,780 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:16,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 11:42:16,780 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:16,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:16,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2108516819, now seen corresponding path program 1 times [2024-11-08 11:42:16,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:16,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954816969] [2024-11-08 11:42:16,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:16,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:42:16,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:16,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954816969] [2024-11-08 11:42:16,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954816969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:42:16,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:42:16,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:42:16,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137204619] [2024-11-08 11:42:16,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:16,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:42:16,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:16,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:42:16,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:42:16,973 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:18,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:18,658 INFO L93 Difference]: Finished difference Result 2843 states and 4882 transitions. [2024-11-08 11:42:18,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:42:18,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2024-11-08 11:42:18,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:18,665 INFO L225 Difference]: With dead ends: 2843 [2024-11-08 11:42:18,665 INFO L226 Difference]: Without dead ends: 1863 [2024-11-08 11:42:18,669 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 [2024-11-08 11:42:18,671 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 409 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:18,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 495 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 11:42:18,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2024-11-08 11:42:18,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1857. [2024-11-08 11:42:18,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4552801724137931) internal successors, (2701), 1856 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:18,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2701 transitions. [2024-11-08 11:42:18,713 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2701 transitions. Word has length 78 [2024-11-08 11:42:18,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:18,714 INFO L471 AbstractCegarLoop]: Abstraction has 1857 states and 2701 transitions. [2024-11-08 11:42:18,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:18,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2701 transitions. [2024-11-08 11:42:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-08 11:42:18,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:18,718 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:18,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 11:42:18,718 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:18,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:18,718 INFO L85 PathProgramCache]: Analyzing trace with hash -42874468, now seen corresponding path program 1 times [2024-11-08 11:42:18,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:18,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856822698] [2024-11-08 11:42:18,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:18,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:42:18,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:18,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856822698] [2024-11-08 11:42:18,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856822698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:42:18,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:42:18,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:42:18,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037892929] [2024-11-08 11:42:18,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:18,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:42:18,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:18,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:42:18,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:42:18,856 INFO L87 Difference]: Start difference. First operand 1857 states and 2701 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:20,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:20,533 INFO L93 Difference]: Finished difference Result 5425 states and 7895 transitions. [2024-11-08 11:42:20,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:42:20,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2024-11-08 11:42:20,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:20,543 INFO L225 Difference]: With dead ends: 5425 [2024-11-08 11:42:20,543 INFO L226 Difference]: Without dead ends: 3570 [2024-11-08 11:42:20,547 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 [2024-11-08 11:42:20,548 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 387 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:20,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 11:42:20,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3570 states. [2024-11-08 11:42:20,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3570 to 2714. [2024-11-08 11:42:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2713 states have (on average 1.315886472539624) internal successors, (3570), 2713 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:20,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 3570 transitions. [2024-11-08 11:42:20,590 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 3570 transitions. Word has length 84 [2024-11-08 11:42:20,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:20,593 INFO L471 AbstractCegarLoop]: Abstraction has 2714 states and 3570 transitions. [2024-11-08 11:42:20,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:20,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 3570 transitions. [2024-11-08 11:42:20,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-08 11:42:20,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:20,596 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:20,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 11:42:20,599 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:20,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:20,600 INFO L85 PathProgramCache]: Analyzing trace with hash -609171172, now seen corresponding path program 1 times [2024-11-08 11:42:20,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:20,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891968077] [2024-11-08 11:42:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:20,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:42:20,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:20,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891968077] [2024-11-08 11:42:20,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891968077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:42:20,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:42:20,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 11:42:20,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656420101] [2024-11-08 11:42:20,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:20,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 11:42:20,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:20,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 11:42:20,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:42:20,970 INFO L87 Difference]: Start difference. First operand 2714 states and 3570 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:22,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:22,830 INFO L93 Difference]: Finished difference Result 7147 states and 9641 transitions. [2024-11-08 11:42:22,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:42:22,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2024-11-08 11:42:22,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:22,842 INFO L225 Difference]: With dead ends: 7147 [2024-11-08 11:42:22,843 INFO L226 Difference]: Without dead ends: 4435 [2024-11-08 11:42:22,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:42:22,847 INFO L432 NwaCegarLoop]: 765 mSDtfsCounter, 1651 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:22,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 863 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [956 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 11:42:22,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4435 states. [2024-11-08 11:42:22,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4435 to 4424. [2024-11-08 11:42:22,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4423 states have (on average 1.2912050644359032) internal successors, (5711), 4423 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:22,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 5711 transitions. [2024-11-08 11:42:22,909 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 5711 transitions. Word has length 161 [2024-11-08 11:42:22,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:22,910 INFO L471 AbstractCegarLoop]: Abstraction has 4424 states and 5711 transitions. [2024-11-08 11:42:22,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:22,911 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 5711 transitions. [2024-11-08 11:42:22,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-08 11:42:22,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:22,916 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:22,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 11:42:22,917 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:22,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:22,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1294742197, now seen corresponding path program 1 times [2024-11-08 11:42:22,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:22,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924018873] [2024-11-08 11:42:22,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:22,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-08 11:42:23,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:23,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924018873] [2024-11-08 11:42:23,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924018873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:42:23,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:42:23,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:42:23,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888778358] [2024-11-08 11:42:23,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:23,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:42:23,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:23,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:42:23,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:42:23,162 INFO L87 Difference]: Start difference. First operand 4424 states and 5711 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:24,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:24,902 INFO L93 Difference]: Finished difference Result 10593 states and 13804 transitions. [2024-11-08 11:42:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:42:24,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 167 [2024-11-08 11:42:24,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:24,921 INFO L225 Difference]: With dead ends: 10593 [2024-11-08 11:42:24,921 INFO L226 Difference]: Without dead ends: 6171 [2024-11-08 11:42:24,927 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 [2024-11-08 11:42:24,931 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 540 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:24,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 240 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 11:42:24,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6171 states. [2024-11-08 11:42:24,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6171 to 6153. [2024-11-08 11:42:25,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6153 states, 6152 states have (on average 1.303966189856957) internal successors, (8022), 6152 states have internal predecessors, (8022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6153 states to 6153 states and 8022 transitions. [2024-11-08 11:42:25,015 INFO L78 Accepts]: Start accepts. Automaton has 6153 states and 8022 transitions. Word has length 167 [2024-11-08 11:42:25,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:25,016 INFO L471 AbstractCegarLoop]: Abstraction has 6153 states and 8022 transitions. [2024-11-08 11:42:25,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:25,016 INFO L276 IsEmpty]: Start isEmpty. Operand 6153 states and 8022 transitions. [2024-11-08 11:42:25,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-08 11:42:25,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:25,018 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:25,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 11:42:25,019 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:25,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:25,020 INFO L85 PathProgramCache]: Analyzing trace with hash -516019643, now seen corresponding path program 1 times [2024-11-08 11:42:25,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:25,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574117845] [2024-11-08 11:42:25,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:25,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:25,372 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 21 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:42:25,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:25,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574117845] [2024-11-08 11:42:25,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574117845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:42:25,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941163349] [2024-11-08 11:42:25,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:25,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:42:25,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:42:25,374 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) [2024-11-08 11:42:25,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 11:42:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:25,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 11:42:25,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:42:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 21 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:42:25,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:42:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:42:26,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941163349] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 11:42:26,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 11:42:26,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-08 11:42:26,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418012123] [2024-11-08 11:42:26,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:26,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:42:26,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:26,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:42:26,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:42:26,080 INFO L87 Difference]: Start difference. First operand 6153 states and 8022 transitions. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:29,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:29,064 INFO L93 Difference]: Finished difference Result 19168 states and 25208 transitions. [2024-11-08 11:42:29,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:42:29,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2024-11-08 11:42:29,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:29,093 INFO L225 Difference]: With dead ends: 19168 [2024-11-08 11:42:29,096 INFO L226 Difference]: Without dead ends: 11736 [2024-11-08 11:42:29,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:42:29,107 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 836 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2681 mSolverCounterSat, 1228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1228 IncrementalHoareTripleChecker+Valid, 2681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:29,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 156 Invalid, 3909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1228 Valid, 2681 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-08 11:42:29,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11736 states. [2024-11-08 11:42:29,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11736 to 11269. [2024-11-08 11:42:29,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11269 states, 11268 states have (on average 1.2258608448704296) internal successors, (13813), 11268 states have internal predecessors, (13813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:29,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11269 states to 11269 states and 13813 transitions. [2024-11-08 11:42:29,297 INFO L78 Accepts]: Start accepts. Automaton has 11269 states and 13813 transitions. Word has length 233 [2024-11-08 11:42:29,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:29,297 INFO L471 AbstractCegarLoop]: Abstraction has 11269 states and 13813 transitions. [2024-11-08 11:42:29,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:29,298 INFO L276 IsEmpty]: Start isEmpty. Operand 11269 states and 13813 transitions. [2024-11-08 11:42:29,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-08 11:42:29,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:29,300 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:29,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 11:42:29,501 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,SelfDestructingSolverStorable5 [2024-11-08 11:42:29,501 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:29,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:29,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1780443001, now seen corresponding path program 1 times [2024-11-08 11:42:29,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:29,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745459336] [2024-11-08 11:42:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:29,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-08 11:42:29,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:29,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745459336] [2024-11-08 11:42:29,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745459336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:42:29,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:42:29,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:42:29,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658181328] [2024-11-08 11:42:29,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:29,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:42:29,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:29,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:42:29,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:42:29,658 INFO L87 Difference]: Start difference. First operand 11269 states and 13813 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:31,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:31,069 INFO L93 Difference]: Finished difference Result 28062 states and 34701 transitions. [2024-11-08 11:42:31,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:42:31,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 251 [2024-11-08 11:42:31,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:31,096 INFO L225 Difference]: With dead ends: 28062 [2024-11-08 11:42:31,096 INFO L226 Difference]: Without dead ends: 15067 [2024-11-08 11:42:31,108 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 [2024-11-08 11:42:31,109 INFO L432 NwaCegarLoop]: 642 mSDtfsCounter, 530 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:31,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 683 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 11:42:31,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15067 states. [2024-11-08 11:42:31,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15067 to 15063. [2024-11-08 11:42:31,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15063 states, 15062 states have (on average 1.1957907316425442) internal successors, (18011), 15062 states have internal predecessors, (18011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:31,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15063 states to 15063 states and 18011 transitions. [2024-11-08 11:42:31,281 INFO L78 Accepts]: Start accepts. Automaton has 15063 states and 18011 transitions. Word has length 251 [2024-11-08 11:42:31,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:31,282 INFO L471 AbstractCegarLoop]: Abstraction has 15063 states and 18011 transitions. [2024-11-08 11:42:31,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:31,282 INFO L276 IsEmpty]: Start isEmpty. Operand 15063 states and 18011 transitions. [2024-11-08 11:42:31,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-08 11:42:31,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:31,285 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:31,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 11:42:31,285 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:31,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:31,286 INFO L85 PathProgramCache]: Analyzing trace with hash -989593744, now seen corresponding path program 1 times [2024-11-08 11:42:31,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:31,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310538345] [2024-11-08 11:42:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:31,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-08 11:42:31,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:31,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310538345] [2024-11-08 11:42:31,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310538345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:42:31,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:42:31,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:42:31,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629563102] [2024-11-08 11:42:31,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:31,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:42:31,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:31,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:42:31,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:42:31,563 INFO L87 Difference]: Start difference. First operand 15063 states and 18011 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:32,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:32,992 INFO L93 Difference]: Finished difference Result 35675 states and 42498 transitions. [2024-11-08 11:42:32,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:42:32,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 270 [2024-11-08 11:42:32,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:33,018 INFO L225 Difference]: With dead ends: 35675 [2024-11-08 11:42:33,018 INFO L226 Difference]: Without dead ends: 20189 [2024-11-08 11:42:33,034 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 [2024-11-08 11:42:33,034 INFO L432 NwaCegarLoop]: 782 mSDtfsCounter, 443 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:33,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 849 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 11:42:33,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20189 states. [2024-11-08 11:42:33,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20189 to 20181. [2024-11-08 11:42:33,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20181 states, 20180 states have (on average 1.1625867195242814) internal successors, (23461), 20180 states have internal predecessors, (23461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:33,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20181 states to 20181 states and 23461 transitions. [2024-11-08 11:42:33,235 INFO L78 Accepts]: Start accepts. Automaton has 20181 states and 23461 transitions. Word has length 270 [2024-11-08 11:42:33,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:33,236 INFO L471 AbstractCegarLoop]: Abstraction has 20181 states and 23461 transitions. [2024-11-08 11:42:33,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:33,236 INFO L276 IsEmpty]: Start isEmpty. Operand 20181 states and 23461 transitions. [2024-11-08 11:42:33,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-08 11:42:33,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:33,241 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:33,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 11:42:33,242 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:33,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:33,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1508330796, now seen corresponding path program 1 times [2024-11-08 11:42:33,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:33,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667388493] [2024-11-08 11:42:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:33,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:33,472 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-08 11:42:33,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:33,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667388493] [2024-11-08 11:42:33,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667388493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:42:33,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:42:33,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:42:33,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809759847] [2024-11-08 11:42:33,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:33,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:42:33,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:33,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:42:33,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:42:33,474 INFO L87 Difference]: Start difference. First operand 20181 states and 23461 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:34,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:34,817 INFO L93 Difference]: Finished difference Result 45879 states and 53504 transitions. [2024-11-08 11:42:34,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:42:34,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 333 [2024-11-08 11:42:34,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:34,848 INFO L225 Difference]: With dead ends: 45879 [2024-11-08 11:42:34,848 INFO L226 Difference]: Without dead ends: 25699 [2024-11-08 11:42:34,865 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 [2024-11-08 11:42:34,866 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 449 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:34,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 366 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 11:42:34,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25699 states. [2024-11-08 11:42:35,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25699 to 20577. [2024-11-08 11:42:35,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20577 states, 20576 states have (on average 1.161110031104199) internal successors, (23891), 20576 states have internal predecessors, (23891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:35,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20577 states to 20577 states and 23891 transitions. [2024-11-08 11:42:35,082 INFO L78 Accepts]: Start accepts. Automaton has 20577 states and 23891 transitions. Word has length 333 [2024-11-08 11:42:35,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:35,083 INFO L471 AbstractCegarLoop]: Abstraction has 20577 states and 23891 transitions. [2024-11-08 11:42:35,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:35,083 INFO L276 IsEmpty]: Start isEmpty. Operand 20577 states and 23891 transitions. [2024-11-08 11:42:35,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2024-11-08 11:42:35,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:35,090 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:35,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 11:42:35,090 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:35,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:35,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2007043278, now seen corresponding path program 1 times [2024-11-08 11:42:35,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:35,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393706313] [2024-11-08 11:42:35,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:35,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-08 11:42:35,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:35,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393706313] [2024-11-08 11:42:35,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393706313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:42:35,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:42:35,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:42:35,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938293307] [2024-11-08 11:42:35,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:35,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:42:35,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:35,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:42:35,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:42:35,259 INFO L87 Difference]: Start difference. First operand 20577 states and 23891 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:36,717 INFO L93 Difference]: Finished difference Result 50935 states and 59227 transitions. [2024-11-08 11:42:36,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:42:36,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 371 [2024-11-08 11:42:36,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:36,751 INFO L225 Difference]: With dead ends: 50935 [2024-11-08 11:42:36,751 INFO L226 Difference]: Without dead ends: 28658 [2024-11-08 11:42:36,768 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 [2024-11-08 11:42:36,768 INFO L432 NwaCegarLoop]: 715 mSDtfsCounter, 263 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:36,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 770 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 11:42:36,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28658 states. [2024-11-08 11:42:36,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28658 to 22692. [2024-11-08 11:42:37,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22692 states, 22691 states have (on average 1.14433035124058) internal successors, (25966), 22691 states have internal predecessors, (25966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:37,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22692 states to 22692 states and 25966 transitions. [2024-11-08 11:42:37,024 INFO L78 Accepts]: Start accepts. Automaton has 22692 states and 25966 transitions. Word has length 371 [2024-11-08 11:42:37,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:37,024 INFO L471 AbstractCegarLoop]: Abstraction has 22692 states and 25966 transitions. [2024-11-08 11:42:37,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:37,024 INFO L276 IsEmpty]: Start isEmpty. Operand 22692 states and 25966 transitions. [2024-11-08 11:42:37,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-11-08 11:42:37,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:37,031 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:37,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 11:42:37,032 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:37,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:37,032 INFO L85 PathProgramCache]: Analyzing trace with hash -600451555, now seen corresponding path program 1 times [2024-11-08 11:42:37,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:37,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132814822] [2024-11-08 11:42:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:37,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:37,313 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-08 11:42:37,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:37,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132814822] [2024-11-08 11:42:37,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132814822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:42:37,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:42:37,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:42:37,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546477660] [2024-11-08 11:42:37,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:37,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:42:37,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:37,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:42:37,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:42:37,315 INFO L87 Difference]: Start difference. First operand 22692 states and 25966 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:38,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:38,588 INFO L93 Difference]: Finished difference Result 50519 states and 57756 transitions. [2024-11-08 11:42:38,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:42:38,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 376 [2024-11-08 11:42:38,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:38,618 INFO L225 Difference]: With dead ends: 50519 [2024-11-08 11:42:38,618 INFO L226 Difference]: Without dead ends: 27829 [2024-11-08 11:42:38,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:42:38,635 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 496 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:38,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 144 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 11:42:38,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27829 states. [2024-11-08 11:42:38,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27829 to 21840. [2024-11-08 11:42:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21840 states, 21839 states have (on average 1.1478547552543614) internal successors, (25068), 21839 states have internal predecessors, (25068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:38,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21840 states to 21840 states and 25068 transitions. [2024-11-08 11:42:38,858 INFO L78 Accepts]: Start accepts. Automaton has 21840 states and 25068 transitions. Word has length 376 [2024-11-08 11:42:38,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:38,859 INFO L471 AbstractCegarLoop]: Abstraction has 21840 states and 25068 transitions. [2024-11-08 11:42:38,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:38,859 INFO L276 IsEmpty]: Start isEmpty. Operand 21840 states and 25068 transitions. [2024-11-08 11:42:38,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-08 11:42:38,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:38,866 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:38,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 11:42:38,866 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:38,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:38,867 INFO L85 PathProgramCache]: Analyzing trace with hash -17425024, now seen corresponding path program 1 times [2024-11-08 11:42:38,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:38,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968113653] [2024-11-08 11:42:38,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:38,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-08 11:42:39,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:39,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968113653] [2024-11-08 11:42:39,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968113653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:42:39,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:42:39,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:42:39,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039790773] [2024-11-08 11:42:39,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:39,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:42:39,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:39,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:42:39,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:42:39,053 INFO L87 Difference]: Start difference. First operand 21840 states and 25068 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:40,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:40,298 INFO L93 Difference]: Finished difference Result 50899 states and 58681 transitions. [2024-11-08 11:42:40,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:42:40,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 398 [2024-11-08 11:42:40,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:40,331 INFO L225 Difference]: With dead ends: 50899 [2024-11-08 11:42:40,332 INFO L226 Difference]: Without dead ends: 29061 [2024-11-08 11:42:40,350 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 [2024-11-08 11:42:40,350 INFO L432 NwaCegarLoop]: 704 mSDtfsCounter, 303 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:40,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 764 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 11:42:40,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29061 states. [2024-11-08 11:42:40,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29061 to 28209. [2024-11-08 11:42:40,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28209 states, 28208 states have (on average 1.1263825865002837) internal successors, (31773), 28208 states have internal predecessors, (31773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:40,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28209 states to 28209 states and 31773 transitions. [2024-11-08 11:42:40,629 INFO L78 Accepts]: Start accepts. Automaton has 28209 states and 31773 transitions. Word has length 398 [2024-11-08 11:42:40,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:40,630 INFO L471 AbstractCegarLoop]: Abstraction has 28209 states and 31773 transitions. [2024-11-08 11:42:40,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:40,630 INFO L276 IsEmpty]: Start isEmpty. Operand 28209 states and 31773 transitions. [2024-11-08 11:42:40,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2024-11-08 11:42:40,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:40,637 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:40,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 11:42:40,637 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:40,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:40,638 INFO L85 PathProgramCache]: Analyzing trace with hash 106183693, now seen corresponding path program 1 times [2024-11-08 11:42:40,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:40,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148182547] [2024-11-08 11:42:40,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:40,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 21 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:42:41,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:41,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148182547] [2024-11-08 11:42:41,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148182547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:42:41,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69277306] [2024-11-08 11:42:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:41,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:42:41,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:42:41,227 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) [2024-11-08 11:42:41,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 11:42:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:41,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 11:42:41,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:42:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 21 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:42:41,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:42:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:42:42,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69277306] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 11:42:42,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 11:42:42,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-08 11:42:42,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474420424] [2024-11-08 11:42:42,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:42,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:42:42,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:42,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:42:42,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:42:42,160 INFO L87 Difference]: Start difference. First operand 28209 states and 31773 transitions. Second operand has 4 states, 4 states have (on average 111.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:44,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:44,355 INFO L93 Difference]: Finished difference Result 70477 states and 78995 transitions. [2024-11-08 11:42:44,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:42:44,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 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 444 [2024-11-08 11:42:44,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:44,402 INFO L225 Difference]: With dead ends: 70477 [2024-11-08 11:42:44,402 INFO L226 Difference]: Without dead ends: 40992 [2024-11-08 11:42:44,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 885 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:42:44,425 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 687 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 742 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:44,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 135 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [742 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 11:42:44,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40992 states. [2024-11-08 11:42:44,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40992 to 38864. [2024-11-08 11:42:44,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38864 states, 38863 states have (on average 1.1195738877595656) internal successors, (43510), 38863 states have internal predecessors, (43510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:44,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38864 states to 38864 states and 43510 transitions. [2024-11-08 11:42:44,872 INFO L78 Accepts]: Start accepts. Automaton has 38864 states and 43510 transitions. Word has length 444 [2024-11-08 11:42:44,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:44,873 INFO L471 AbstractCegarLoop]: Abstraction has 38864 states and 43510 transitions. [2024-11-08 11:42:44,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:44,873 INFO L276 IsEmpty]: Start isEmpty. Operand 38864 states and 43510 transitions. [2024-11-08 11:42:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-08 11:42:44,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:44,882 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:44,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 11:42:45,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 11:42:45,083 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:45,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash 719908107, now seen corresponding path program 1 times [2024-11-08 11:42:45,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:45,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058609236] [2024-11-08 11:42:45,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:45,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-08 11:42:45,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:45,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058609236] [2024-11-08 11:42:45,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058609236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:42:45,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:42:45,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:42:45,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844216769] [2024-11-08 11:42:45,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:45,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:42:45,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:45,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:42:45,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:42:45,390 INFO L87 Difference]: Start difference. First operand 38864 states and 43510 transitions. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:46,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:46,898 INFO L93 Difference]: Finished difference Result 91353 states and 102481 transitions. [2024-11-08 11:42:46,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:42:46,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 487 [2024-11-08 11:42:46,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:46,960 INFO L225 Difference]: With dead ends: 91353 [2024-11-08 11:42:46,960 INFO L226 Difference]: Without dead ends: 52490 [2024-11-08 11:42:46,988 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 [2024-11-08 11:42:46,988 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 466 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:46,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 365 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 11:42:47,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52490 states. [2024-11-08 11:42:47,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52490 to 47801. [2024-11-08 11:42:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47801 states, 47800 states have (on average 1.1151673640167363) internal successors, (53305), 47800 states have internal predecessors, (53305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:47,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47801 states to 47801 states and 53305 transitions. [2024-11-08 11:42:47,492 INFO L78 Accepts]: Start accepts. Automaton has 47801 states and 53305 transitions. Word has length 487 [2024-11-08 11:42:47,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:47,493 INFO L471 AbstractCegarLoop]: Abstraction has 47801 states and 53305 transitions. [2024-11-08 11:42:47,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:47,493 INFO L276 IsEmpty]: Start isEmpty. Operand 47801 states and 53305 transitions. [2024-11-08 11:42:47,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2024-11-08 11:42:47,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:47,503 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:47,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 11:42:47,504 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:47,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:47,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1160624918, now seen corresponding path program 1 times [2024-11-08 11:42:47,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:47,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341551703] [2024-11-08 11:42:47,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:47,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 32 proven. 229 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:42:48,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:48,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341551703] [2024-11-08 11:42:48,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341551703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:42:48,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45822054] [2024-11-08 11:42:48,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:48,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:42:48,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:42:48,044 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) [2024-11-08 11:42:48,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 11:42:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:48,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 11:42:48,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:42:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 177 proven. 73 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 11:42:48,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:42:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 11:42:48,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45822054] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 11:42:48,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 11:42:48,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2024-11-08 11:42:48,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608043234] [2024-11-08 11:42:48,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:48,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:42:48,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:48,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:42:48,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:42:48,531 INFO L87 Difference]: Start difference. First operand 47801 states and 53305 transitions. Second operand has 4 states, 4 states have (on average 127.0) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:50,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:50,924 INFO L93 Difference]: Finished difference Result 110933 states and 123741 transitions. [2024-11-08 11:42:50,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:42:50,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 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 518 [2024-11-08 11:42:50,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:51,005 INFO L225 Difference]: With dead ends: 110933 [2024-11-08 11:42:51,005 INFO L226 Difference]: Without dead ends: 63134 [2024-11-08 11:42:51,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1033 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:42:51,039 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 858 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 2723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:51,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 162 Invalid, 2723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 11:42:51,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63134 states. [2024-11-08 11:42:51,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63134 to 60578. [2024-11-08 11:42:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60578 states, 60577 states have (on average 1.116265249186985) internal successors, (67620), 60577 states have internal predecessors, (67620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:51,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60578 states to 60578 states and 67620 transitions. [2024-11-08 11:42:51,836 INFO L78 Accepts]: Start accepts. Automaton has 60578 states and 67620 transitions. Word has length 518 [2024-11-08 11:42:51,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:51,836 INFO L471 AbstractCegarLoop]: Abstraction has 60578 states and 67620 transitions. [2024-11-08 11:42:51,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:51,836 INFO L276 IsEmpty]: Start isEmpty. Operand 60578 states and 67620 transitions. [2024-11-08 11:42:51,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2024-11-08 11:42:51,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:51,854 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:51,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 11:42:52,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:42:52,055 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:52,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:52,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1115520971, now seen corresponding path program 1 times [2024-11-08 11:42:52,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:52,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755700894] [2024-11-08 11:42:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:52,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-08 11:42:52,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:52,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755700894] [2024-11-08 11:42:52,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755700894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:42:52,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:42:52,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:42:52,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810976982] [2024-11-08 11:42:52,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:52,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:42:52,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:52,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:42:52,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:42:52,271 INFO L87 Difference]: Start difference. First operand 60578 states and 67620 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:53,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:53,956 INFO L93 Difference]: Finished difference Result 130507 states and 145611 transitions. [2024-11-08 11:42:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:42:53,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 613 [2024-11-08 11:42:53,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:54,040 INFO L225 Difference]: With dead ends: 130507 [2024-11-08 11:42:54,041 INFO L226 Difference]: Without dead ends: 67797 [2024-11-08 11:42:54,080 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 [2024-11-08 11:42:54,080 INFO L432 NwaCegarLoop]: 655 mSDtfsCounter, 490 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:54,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 697 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 11:42:54,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67797 states. [2024-11-08 11:42:54,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67797 to 66516. [2024-11-08 11:42:54,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66516 states, 66515 states have (on average 1.099977448695783) internal successors, (73165), 66515 states have internal predecessors, (73165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:55,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66516 states to 66516 states and 73165 transitions. [2024-11-08 11:42:55,023 INFO L78 Accepts]: Start accepts. Automaton has 66516 states and 73165 transitions. Word has length 613 [2024-11-08 11:42:55,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:55,024 INFO L471 AbstractCegarLoop]: Abstraction has 66516 states and 73165 transitions. [2024-11-08 11:42:55,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:55,024 INFO L276 IsEmpty]: Start isEmpty. Operand 66516 states and 73165 transitions. [2024-11-08 11:42:55,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2024-11-08 11:42:55,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:55,047 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:55,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 11:42:55,047 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:55,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:55,047 INFO L85 PathProgramCache]: Analyzing trace with hash 589457783, now seen corresponding path program 1 times [2024-11-08 11:42:55,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:55,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328740163] [2024-11-08 11:42:55,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:55,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-08 11:42:55,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:55,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328740163] [2024-11-08 11:42:55,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328740163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:42:55,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:42:55,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:42:55,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137735657] [2024-11-08 11:42:55,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:55,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:42:55,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:55,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:42:55,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:42:55,613 INFO L87 Difference]: Start difference. First operand 66516 states and 73165 transitions. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:57,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:42:57,191 INFO L93 Difference]: Finished difference Result 153078 states and 168371 transitions. [2024-11-08 11:42:57,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:42:57,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 623 [2024-11-08 11:42:57,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:42:57,292 INFO L225 Difference]: With dead ends: 153078 [2024-11-08 11:42:57,293 INFO L226 Difference]: Without dead ends: 86564 [2024-11-08 11:42:57,331 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 [2024-11-08 11:42:57,332 INFO L432 NwaCegarLoop]: 559 mSDtfsCounter, 428 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 11:42:57,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 596 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 11:42:57,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86564 states. [2024-11-08 11:42:58,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86564 to 82274. [2024-11-08 11:42:58,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82274 states, 82273 states have (on average 1.1007620969212257) internal successors, (90563), 82273 states have internal predecessors, (90563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82274 states to 82274 states and 90563 transitions. [2024-11-08 11:42:58,575 INFO L78 Accepts]: Start accepts. Automaton has 82274 states and 90563 transitions. Word has length 623 [2024-11-08 11:42:58,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:42:58,575 INFO L471 AbstractCegarLoop]: Abstraction has 82274 states and 90563 transitions. [2024-11-08 11:42:58,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:42:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 82274 states and 90563 transitions. [2024-11-08 11:42:58,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2024-11-08 11:42:58,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:42:58,592 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:42:58,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 11:42:58,592 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:42:58,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:42:58,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1024357676, now seen corresponding path program 1 times [2024-11-08 11:42:58,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:42:58,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961129418] [2024-11-08 11:42:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:42:58,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:42:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:42:59,328 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 458 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-08 11:42:59,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:42:59,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961129418] [2024-11-08 11:42:59,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961129418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:42:59,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:42:59,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:42:59,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304791108] [2024-11-08 11:42:59,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:42:59,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:42:59,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:42:59,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:42:59,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:42:59,332 INFO L87 Difference]: Start difference. First operand 82274 states and 90563 transitions. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:43:01,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:43:01,032 INFO L93 Difference]: Finished difference Result 184138 states and 202739 transitions. [2024-11-08 11:43:01,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:43:01,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 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 624 [2024-11-08 11:43:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:43:01,161 INFO L225 Difference]: With dead ends: 184138 [2024-11-08 11:43:01,161 INFO L226 Difference]: Without dead ends: 99307 [2024-11-08 11:43:01,212 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 [2024-11-08 11:43:01,213 INFO L432 NwaCegarLoop]: 605 mSDtfsCounter, 420 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:43:01,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 640 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 11:43:01,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99307 states. [2024-11-08 11:43:02,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99307 to 93346. [2024-11-08 11:43:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93346 states, 93345 states have (on average 1.0977663506347421) internal successors, (102471), 93345 states have internal predecessors, (102471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:43:02,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93346 states to 93346 states and 102471 transitions. [2024-11-08 11:43:02,597 INFO L78 Accepts]: Start accepts. Automaton has 93346 states and 102471 transitions. Word has length 624 [2024-11-08 11:43:02,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:43:02,598 INFO L471 AbstractCegarLoop]: Abstraction has 93346 states and 102471 transitions. [2024-11-08 11:43:02,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:43:02,598 INFO L276 IsEmpty]: Start isEmpty. Operand 93346 states and 102471 transitions. [2024-11-08 11:43:02,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2024-11-08 11:43:02,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:43:02,617 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:43:02,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 11:43:02,618 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:43:02,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:43:02,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1670815035, now seen corresponding path program 1 times [2024-11-08 11:43:02,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:43:02,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422541688] [2024-11-08 11:43:02,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:43:02,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:43:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:43:03,496 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 537 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 11:43:03,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:43:03,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422541688] [2024-11-08 11:43:03,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422541688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:43:03,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:43:03,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 11:43:03,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384184191] [2024-11-08 11:43:03,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:43:03,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:43:03,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:43:03,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:43:03,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:43:03,499 INFO L87 Difference]: Start difference. First operand 93346 states and 102471 transitions. Second operand has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:43:05,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:43:05,847 INFO L93 Difference]: Finished difference Result 214834 states and 235924 transitions. [2024-11-08 11:43:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:43:05,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 0 states have call successors, (0), 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 628 [2024-11-08 11:43:05,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:43:05,995 INFO L225 Difference]: With dead ends: 214834 [2024-11-08 11:43:05,995 INFO L226 Difference]: Without dead ends: 121915 [2024-11-08 11:43:06,024 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 [2024-11-08 11:43:06,024 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 815 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:43:06,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 169 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 11:43:06,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121915 states. [2024-11-08 11:43:07,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121915 to 119780. [2024-11-08 11:43:07,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119780 states, 119779 states have (on average 1.0970704380567544) internal successors, (131406), 119779 states have internal predecessors, (131406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:43:07,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119780 states to 119780 states and 131406 transitions. [2024-11-08 11:43:07,648 INFO L78 Accepts]: Start accepts. Automaton has 119780 states and 131406 transitions. Word has length 628 [2024-11-08 11:43:07,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:43:07,649 INFO L471 AbstractCegarLoop]: Abstraction has 119780 states and 131406 transitions. [2024-11-08 11:43:07,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:43:07,649 INFO L276 IsEmpty]: Start isEmpty. Operand 119780 states and 131406 transitions. [2024-11-08 11:43:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2024-11-08 11:43:07,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:43:07,675 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:43:07,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 11:43:07,675 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:43:07,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:43:07,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1726644073, now seen corresponding path program 1 times [2024-11-08 11:43:07,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:43:07,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544590331] [2024-11-08 11:43:07,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:43:07,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:43:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:43:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 375 proven. 82 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-08 11:43:09,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:43:09,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544590331] [2024-11-08 11:43:09,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544590331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:43:09,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906740046] [2024-11-08 11:43:09,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:43:09,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:43:09,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:43:09,100 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:43:09,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 11:43:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:43:09,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 11:43:09,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:43:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 375 proven. 82 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-08 11:43:10,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:43:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 456 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-08 11:43:11,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906740046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 11:43:11,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 11:43:11,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-11-08 11:43:11,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872218030] [2024-11-08 11:43:11,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 11:43:11,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 11:43:11,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:43:11,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 11:43:11,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-08 11:43:11,066 INFO L87 Difference]: Start difference. First operand 119780 states and 131406 transitions. Second operand has 10 states, 10 states have (on average 89.2) internal successors, (892), 9 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:43:15,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:43:15,626 INFO L93 Difference]: Finished difference Result 254729 states and 279140 transitions. [2024-11-08 11:43:15,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 11:43:15,626 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 89.2) internal successors, (892), 9 states have internal predecessors, (892), 0 states have call successors, (0), 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 643 [2024-11-08 11:43:15,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:43:15,779 INFO L225 Difference]: With dead ends: 254729 [2024-11-08 11:43:15,779 INFO L226 Difference]: Without dead ends: 135376 [2024-11-08 11:43:15,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1295 GetRequests, 1281 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-08 11:43:15,822 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 3226 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 6531 mSolverCounterSat, 809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3226 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 7340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 6531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:43:15,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3226 Valid, 383 Invalid, 7340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 6531 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-08 11:43:15,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135376 states. [2024-11-08 11:43:17,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135376 to 120630. [2024-11-08 11:43:17,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120630 states, 120629 states have (on average 1.0943637102189356) internal successors, (132012), 120629 states have internal predecessors, (132012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:43:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120630 states to 120630 states and 132012 transitions. [2024-11-08 11:43:17,865 INFO L78 Accepts]: Start accepts. Automaton has 120630 states and 132012 transitions. Word has length 643 [2024-11-08 11:43:17,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:43:17,866 INFO L471 AbstractCegarLoop]: Abstraction has 120630 states and 132012 transitions. [2024-11-08 11:43:17,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 89.2) internal successors, (892), 9 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:43:17,866 INFO L276 IsEmpty]: Start isEmpty. Operand 120630 states and 132012 transitions. [2024-11-08 11:43:17,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2024-11-08 11:43:17,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:43:17,881 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:43:17,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 11:43:18,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:43:18,081 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:43:18,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:43:18,082 INFO L85 PathProgramCache]: Analyzing trace with hash -685287526, now seen corresponding path program 1 times [2024-11-08 11:43:18,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:43:18,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809155465] [2024-11-08 11:43:18,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:43:18,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:43:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:43:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 605 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-08 11:43:18,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:43:18,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809155465] [2024-11-08 11:43:18,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809155465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:43:18,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:43:18,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:43:18,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360478008] [2024-11-08 11:43:18,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:43:18,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:43:18,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:43:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:43:18,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:43:18,745 INFO L87 Difference]: Start difference. First operand 120630 states and 132012 transitions. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:43:20,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:43:20,753 INFO L93 Difference]: Finished difference Result 252321 states and 275932 transitions. [2024-11-08 11:43:20,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:43:20,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 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 703 [2024-11-08 11:43:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:43:20,911 INFO L225 Difference]: With dead ends: 252321 [2024-11-08 11:43:20,911 INFO L226 Difference]: Without dead ends: 131693 [2024-11-08 11:43:20,937 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 [2024-11-08 11:43:20,938 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 396 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 11:43:20,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 306 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 11:43:21,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131693 states. [2024-11-08 11:43:22,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131693 to 127005. [2024-11-08 11:43:22,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127005 states, 127004 states have (on average 1.0903514849925986) internal successors, (138479), 127004 states have internal predecessors, (138479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:43:23,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127005 states to 127005 states and 138479 transitions. [2024-11-08 11:43:23,110 INFO L78 Accepts]: Start accepts. Automaton has 127005 states and 138479 transitions. Word has length 703 [2024-11-08 11:43:23,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:43:23,115 INFO L471 AbstractCegarLoop]: Abstraction has 127005 states and 138479 transitions. [2024-11-08 11:43:23,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:43:23,116 INFO L276 IsEmpty]: Start isEmpty. Operand 127005 states and 138479 transitions. [2024-11-08 11:43:23,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2024-11-08 11:43:23,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:43:23,154 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:43:23,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-08 11:43:23,154 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:43:23,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:43:23,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1562125047, now seen corresponding path program 1 times [2024-11-08 11:43:23,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:43:23,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295117627] [2024-11-08 11:43:23,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:43:23,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:43:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:43:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 728 proven. 80 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 11:43:24,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:43:24,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295117627] [2024-11-08 11:43:24,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295117627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:43:24,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24981751] [2024-11-08 11:43:24,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:43:24,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:43:24,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:43:24,130 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:43:24,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 11:43:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:43:24,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 11:43:24,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:43:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 808 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-08 11:43:24,634 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:43:24,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24981751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:43:24,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:43:24,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-08 11:43:24,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787875178] [2024-11-08 11:43:24,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:43:24,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:43:24,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:43:24,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:43:24,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-08 11:43:24,636 INFO L87 Difference]: Start difference. First operand 127005 states and 138479 transitions. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:43:26,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:43:26,778 INFO L93 Difference]: Finished difference Result 256558 states and 279600 transitions. [2024-11-08 11:43:26,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:43:26,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 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 729 [2024-11-08 11:43:26,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:43:26,938 INFO L225 Difference]: With dead ends: 256558 [2024-11-08 11:43:26,938 INFO L226 Difference]: Without dead ends: 129555 [2024-11-08 11:43:27,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-08 11:43:27,019 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 828 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:43:27,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 278 Invalid, 2269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-08 11:43:27,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129555 states. [2024-11-08 11:43:28,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129555 to 129130. [2024-11-08 11:43:28,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129130 states, 129129 states have (on average 1.0888259027793912) internal successors, (140599), 129129 states have internal predecessors, (140599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:43:28,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129130 states to 129130 states and 140599 transitions. [2024-11-08 11:43:28,907 INFO L78 Accepts]: Start accepts. Automaton has 129130 states and 140599 transitions. Word has length 729 [2024-11-08 11:43:28,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:43:28,908 INFO L471 AbstractCegarLoop]: Abstraction has 129130 states and 140599 transitions. [2024-11-08 11:43:28,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:43:28,908 INFO L276 IsEmpty]: Start isEmpty. Operand 129130 states and 140599 transitions. [2024-11-08 11:43:28,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2024-11-08 11:43:28,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:43:28,947 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:43:28,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 11:43:29,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 11:43:29,148 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:43:29,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:43:29,148 INFO L85 PathProgramCache]: Analyzing trace with hash 823943026, now seen corresponding path program 1 times [2024-11-08 11:43:29,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:43:29,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014735573] [2024-11-08 11:43:29,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:43:29,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:43:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 11:43:29,380 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 11:43:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 11:43:29,689 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 11:43:29,689 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 11:43:29,690 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 11:43:29,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-08 11:43:29,696 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]