./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 3a10e323530dd468ac9890be0bde9c03597b2532bfc479ced0ba7cd3c96166ef --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 07:07:27,677 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 07:07:27,717 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-14 07:07:27,720 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 07:07:27,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 07:07:27,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 07:07:27,737 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 07:07:27,737 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 07:07:27,738 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 07:07:27,738 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 07:07:27,738 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 07:07:27,739 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 07:07:27,739 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 07:07:27,739 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 07:07:27,740 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 07:07:27,740 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 07:07:27,740 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 07:07:27,741 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 07:07:27,741 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 07:07:27,741 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 07:07:27,741 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 07:07:27,742 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 07:07:27,742 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 07:07:27,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 07:07:27,743 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 07:07:27,743 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 07:07:27,743 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 07:07:27,744 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 07:07:27,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 07:07:27,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 07:07:27,744 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 07:07:27,745 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 07:07:27,745 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 07:07:27,745 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 07:07:27,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 07:07:27,746 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 07:07:27,746 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 07:07:27,746 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 07:07:27,747 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 07:07:27,747 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a10e323530dd468ac9890be0bde9c03597b2532bfc479ced0ba7cd3c96166ef [2024-10-14 07:07:27,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 07:07:28,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 07:07:28,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 07:07:28,008 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 07:07:28,008 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 07:07:28,009 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c [2024-10-14 07:07:29,573 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 07:07:29,805 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 07:07:29,806 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c [2024-10-14 07:07:29,818 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3fa24af2/de9a98ebbfc948b5a8f4c5b38600e8a9/FLAGe62e0db7e [2024-10-14 07:07:29,833 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3fa24af2/de9a98ebbfc948b5a8f4c5b38600e8a9 [2024-10-14 07:07:29,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 07:07:29,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 07:07:29,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 07:07:29,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 07:07:29,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 07:07:29,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:07:29" (1/1) ... [2024-10-14 07:07:29,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305df797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:07:29, skipping insertion in model container [2024-10-14 07:07:29,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:07:29" (1/1) ... [2024-10-14 07:07:29,880 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 07:07:30,025 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c[1266,1279] [2024-10-14 07:07:30,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 07:07:30,140 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 07:07:30,149 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c[1266,1279] [2024-10-14 07:07:30,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 07:07:30,305 INFO L204 MainTranslator]: Completed translation [2024-10-14 07:07:30,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:07:30 WrapperNode [2024-10-14 07:07:30,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 07:07:30,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 07:07:30,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 07:07:30,307 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 07:07:30,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:07:30" (1/1) ... [2024-10-14 07:07:30,339 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:07:30" (1/1) ... [2024-10-14 07:07:30,415 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 748 [2024-10-14 07:07:30,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 07:07:30,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 07:07:30,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 07:07:30,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 07:07:30,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:07:30" (1/1) ... [2024-10-14 07:07:30,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:07:30" (1/1) ... [2024-10-14 07:07:30,445 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:07:30" (1/1) ... [2024-10-14 07:07:30,485 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 07:07:30,489 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:07:30" (1/1) ... [2024-10-14 07:07:30,489 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:07:30" (1/1) ... [2024-10-14 07:07:30,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:07:30" (1/1) ... [2024-10-14 07:07:30,522 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:07:30" (1/1) ... [2024-10-14 07:07:30,536 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:07:30" (1/1) ... [2024-10-14 07:07:30,549 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:07:30" (1/1) ... [2024-10-14 07:07:30,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 07:07:30,564 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 07:07:30,564 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 07:07:30,564 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 07:07:30,565 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:07:30" (1/1) ... [2024-10-14 07:07:30,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 07:07:30,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:07:30,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 07:07:30,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 07:07:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 07:07:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 07:07:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 07:07:30,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 07:07:30,798 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 07:07:30,800 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 07:07:31,467 INFO L? ?]: Removed 395 outVars from TransFormulas that were not future-live. [2024-10-14 07:07:31,467 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 07:07:31,497 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 07:07:31,498 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 07:07:31,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:07:31 BoogieIcfgContainer [2024-10-14 07:07:31,498 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 07:07:31,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 07:07:31,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 07:07:31,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 07:07:31,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:07:29" (1/3) ... [2024-10-14 07:07:31,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c58ff8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:07:31, skipping insertion in model container [2024-10-14 07:07:31,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:07:30" (2/3) ... [2024-10-14 07:07:31,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c58ff8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:07:31, skipping insertion in model container [2024-10-14 07:07:31,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:07:31" (3/3) ... [2024-10-14 07:07:31,505 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c [2024-10-14 07:07:31,517 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 07:07:31,518 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 07:07:31,584 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 07:07:31,592 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;@3d08f8c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 07:07:31,593 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 07:07:31,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 137 states have (on average 1.5036496350364963) internal successors, (206), 138 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:31,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-14 07:07:31,607 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:31,607 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:07:31,608 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:31,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:31,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1832313884, now seen corresponding path program 1 times [2024-10-14 07:07:31,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:31,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6504059] [2024-10-14 07:07:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:31,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:32,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:32,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:07:32,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6504059] [2024-10-14 07:07:32,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6504059] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:07:32,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:07:32,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:07:32,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130915140] [2024-10-14 07:07:32,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:07:32,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 07:07:32,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:07:32,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 07:07:32,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 07:07:32,239 INFO L87 Difference]: Start difference. First operand has 139 states, 137 states have (on average 1.5036496350364963) internal successors, (206), 138 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:32,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:07:32,283 INFO L93 Difference]: Finished difference Result 226 states and 336 transitions. [2024-10-14 07:07:32,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 07:07:32,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-10-14 07:07:32,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:07:32,293 INFO L225 Difference]: With dead ends: 226 [2024-10-14 07:07:32,294 INFO L226 Difference]: Without dead ends: 140 [2024-10-14 07:07:32,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 07:07:32,303 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 07:07:32,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 598 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 07:07:32,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-10-14 07:07:32,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-10-14 07:07:32,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.4820143884892085) internal successors, (206), 139 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:32,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 206 transitions. [2024-10-14 07:07:32,350 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 206 transitions. Word has length 40 [2024-10-14 07:07:32,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:07:32,351 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 206 transitions. [2024-10-14 07:07:32,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:32,351 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 206 transitions. [2024-10-14 07:07:32,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-14 07:07:32,352 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:32,352 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:07:32,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 07:07:32,353 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:32,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash 968850943, now seen corresponding path program 1 times [2024-10-14 07:07:32,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:32,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057387750] [2024-10-14 07:07:32,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:32,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:32,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:32,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:07:32,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057387750] [2024-10-14 07:07:32,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057387750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:07:32,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:07:32,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:07:32,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139962541] [2024-10-14 07:07:32,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:07:32,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 07:07:32,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:07:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 07:07:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 07:07:32,500 INFO L87 Difference]: Start difference. First operand 140 states and 206 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:32,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:07:32,535 INFO L93 Difference]: Finished difference Result 229 states and 336 transitions. [2024-10-14 07:07:32,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 07:07:32,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-10-14 07:07:32,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:07:32,537 INFO L225 Difference]: With dead ends: 229 [2024-10-14 07:07:32,537 INFO L226 Difference]: Without dead ends: 142 [2024-10-14 07:07:32,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 07:07:32,538 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 07:07:32,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 595 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 07:07:32,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-10-14 07:07:32,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-10-14 07:07:32,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.475177304964539) internal successors, (208), 141 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:32,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 208 transitions. [2024-10-14 07:07:32,546 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 208 transitions. Word has length 41 [2024-10-14 07:07:32,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:07:32,547 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 208 transitions. [2024-10-14 07:07:32,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:32,547 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 208 transitions. [2024-10-14 07:07:32,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-14 07:07:32,548 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:32,548 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:07:32,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 07:07:32,548 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:32,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:32,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1128357547, now seen corresponding path program 1 times [2024-10-14 07:07:32,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:32,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104914285] [2024-10-14 07:07:32,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:32,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:33,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:07:33,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104914285] [2024-10-14 07:07:33,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104914285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:07:33,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:07:33,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:07:33,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598259523] [2024-10-14 07:07:33,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:07:33,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 07:07:33,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:07:33,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 07:07:33,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 07:07:33,028 INFO L87 Difference]: Start difference. First operand 142 states and 208 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:07:33,062 INFO L93 Difference]: Finished difference Result 231 states and 337 transitions. [2024-10-14 07:07:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 07:07:33,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-10-14 07:07:33,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:07:33,064 INFO L225 Difference]: With dead ends: 231 [2024-10-14 07:07:33,064 INFO L226 Difference]: Without dead ends: 142 [2024-10-14 07:07:33,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 07:07:33,065 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 6 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 07:07:33,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 583 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 07:07:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-10-14 07:07:33,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-10-14 07:07:33,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.4680851063829787) internal successors, (207), 141 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:33,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 207 transitions. [2024-10-14 07:07:33,072 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 207 transitions. Word has length 42 [2024-10-14 07:07:33,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:07:33,073 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 207 transitions. [2024-10-14 07:07:33,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:33,073 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 207 transitions. [2024-10-14 07:07:33,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-14 07:07:33,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:33,074 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:07:33,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 07:07:33,075 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:33,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:33,075 INFO L85 PathProgramCache]: Analyzing trace with hash 289541446, now seen corresponding path program 1 times [2024-10-14 07:07:33,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:33,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442730040] [2024-10-14 07:07:33,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:33,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:33,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:07:33,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442730040] [2024-10-14 07:07:33,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442730040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:07:33,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:07:33,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 07:07:33,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615707187] [2024-10-14 07:07:33,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:07:33,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 07:07:33,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:07:33,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 07:07:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-14 07:07:33,431 INFO L87 Difference]: Start difference. First operand 142 states and 207 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:33,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:07:33,562 INFO L93 Difference]: Finished difference Result 241 states and 349 transitions. [2024-10-14 07:07:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 07:07:33,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-10-14 07:07:33,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:07:33,564 INFO L225 Difference]: With dead ends: 241 [2024-10-14 07:07:33,564 INFO L226 Difference]: Without dead ends: 152 [2024-10-14 07:07:33,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-14 07:07:33,567 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 192 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:07:33,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1154 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:07:33,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-10-14 07:07:33,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2024-10-14 07:07:33,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.46) internal successors, (219), 150 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 219 transitions. [2024-10-14 07:07:33,582 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 219 transitions. Word has length 43 [2024-10-14 07:07:33,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:07:33,582 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 219 transitions. [2024-10-14 07:07:33,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:33,583 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 219 transitions. [2024-10-14 07:07:33,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-14 07:07:33,584 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:33,584 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:07:33,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 07:07:33,584 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:33,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:33,585 INFO L85 PathProgramCache]: Analyzing trace with hash 705196754, now seen corresponding path program 1 times [2024-10-14 07:07:33,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:33,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591813237] [2024-10-14 07:07:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:33,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:33,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:07:33,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591813237] [2024-10-14 07:07:33,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591813237] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:07:33,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:07:33,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:07:33,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592044328] [2024-10-14 07:07:33,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:07:33,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:07:33,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:07:33,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:07:33,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 07:07:33,920 INFO L87 Difference]: Start difference. First operand 151 states and 219 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:33,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:07:33,973 INFO L93 Difference]: Finished difference Result 255 states and 367 transitions. [2024-10-14 07:07:33,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:07:33,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-10-14 07:07:33,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:07:33,976 INFO L225 Difference]: With dead ends: 255 [2024-10-14 07:07:33,976 INFO L226 Difference]: Without dead ends: 157 [2024-10-14 07:07:33,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 07:07:33,980 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 175 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 07:07:33,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 585 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 07:07:33,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-10-14 07:07:33,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-10-14 07:07:33,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.4423076923076923) internal successors, (225), 156 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:33,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 225 transitions. [2024-10-14 07:07:33,995 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 225 transitions. Word has length 44 [2024-10-14 07:07:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:07:33,995 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 225 transitions. [2024-10-14 07:07:33,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:33,996 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 225 transitions. [2024-10-14 07:07:33,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-14 07:07:33,997 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:33,997 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:07:33,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 07:07:33,997 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:33,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:33,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1230991719, now seen corresponding path program 1 times [2024-10-14 07:07:33,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:33,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822306171] [2024-10-14 07:07:33,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:34,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:34,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:34,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:07:34,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822306171] [2024-10-14 07:07:34,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822306171] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:07:34,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:07:34,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 07:07:34,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248316459] [2024-10-14 07:07:34,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:07:34,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 07:07:34,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:07:34,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 07:07:34,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 07:07:34,192 INFO L87 Difference]: Start difference. First operand 157 states and 225 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:34,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:07:34,243 INFO L93 Difference]: Finished difference Result 293 states and 411 transitions. [2024-10-14 07:07:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:07:34,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-10-14 07:07:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:07:34,244 INFO L225 Difference]: With dead ends: 293 [2024-10-14 07:07:34,244 INFO L226 Difference]: Without dead ends: 189 [2024-10-14 07:07:34,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-14 07:07:34,245 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 236 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 07:07:34,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 568 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 07:07:34,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-10-14 07:07:34,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 159. [2024-10-14 07:07:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.4367088607594938) internal successors, (227), 158 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 227 transitions. [2024-10-14 07:07:34,259 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 227 transitions. Word has length 44 [2024-10-14 07:07:34,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:07:34,259 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 227 transitions. [2024-10-14 07:07:34,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 227 transitions. [2024-10-14 07:07:34,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-14 07:07:34,260 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:34,260 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:07:34,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 07:07:34,260 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:34,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:34,261 INFO L85 PathProgramCache]: Analyzing trace with hash -423940214, now seen corresponding path program 1 times [2024-10-14 07:07:34,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:34,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216874481] [2024-10-14 07:07:34,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:34,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:34,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:07:34,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216874481] [2024-10-14 07:07:34,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216874481] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:07:34,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:07:34,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 07:07:34,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803998195] [2024-10-14 07:07:34,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:07:34,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 07:07:34,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:07:34,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 07:07:34,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 07:07:34,443 INFO L87 Difference]: Start difference. First operand 159 states and 227 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:34,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:07:34,490 INFO L93 Difference]: Finished difference Result 287 states and 404 transitions. [2024-10-14 07:07:34,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:07:34,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-14 07:07:34,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:07:34,491 INFO L225 Difference]: With dead ends: 287 [2024-10-14 07:07:34,491 INFO L226 Difference]: Without dead ends: 183 [2024-10-14 07:07:34,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-14 07:07:34,492 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 238 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 07:07:34,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 571 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 07:07:34,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-10-14 07:07:34,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 161. [2024-10-14 07:07:34,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.43125) internal successors, (229), 160 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 229 transitions. [2024-10-14 07:07:34,496 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 229 transitions. Word has length 45 [2024-10-14 07:07:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:07:34,496 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 229 transitions. [2024-10-14 07:07:34,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 229 transitions. [2024-10-14 07:07:34,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-14 07:07:34,497 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:34,497 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, 1, 1, 1, 1] [2024-10-14 07:07:34,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 07:07:34,498 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:34,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:34,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1489133483, now seen corresponding path program 1 times [2024-10-14 07:07:34,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:34,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266622492] [2024-10-14 07:07:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:34,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:35,410 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:35,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:07:35,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266622492] [2024-10-14 07:07:35,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266622492] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:07:35,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145769014] [2024-10-14 07:07:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:35,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:07:35,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:07:35,427 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:07:35,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 07:07:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:35,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-14 07:07:35,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:07:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:36,013 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 07:07:36,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145769014] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:07:36,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 07:07:36,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-14 07:07:36,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165157149] [2024-10-14 07:07:36,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:07:36,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:07:36,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:07:36,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:07:36,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-14 07:07:36,014 INFO L87 Difference]: Start difference. First operand 161 states and 229 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:36,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:07:36,315 INFO L93 Difference]: Finished difference Result 278 states and 390 transitions. [2024-10-14 07:07:36,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:07:36,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2024-10-14 07:07:36,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:07:36,318 INFO L225 Difference]: With dead ends: 278 [2024-10-14 07:07:36,318 INFO L226 Difference]: Without dead ends: 174 [2024-10-14 07:07:36,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-14 07:07:36,318 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 196 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 07:07:36,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 157 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 07:07:36,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-10-14 07:07:36,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2024-10-14 07:07:36,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.4011627906976745) internal successors, (241), 172 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:36,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 241 transitions. [2024-10-14 07:07:36,324 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 241 transitions. Word has length 88 [2024-10-14 07:07:36,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:07:36,324 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 241 transitions. [2024-10-14 07:07:36,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:36,325 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 241 transitions. [2024-10-14 07:07:36,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-14 07:07:36,329 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:36,329 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, 1, 1, 1, 1, 1, 1] [2024-10-14 07:07:36,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 07:07:36,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:07:36,531 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:36,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:36,532 INFO L85 PathProgramCache]: Analyzing trace with hash -236106130, now seen corresponding path program 1 times [2024-10-14 07:07:36,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:36,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111880612] [2024-10-14 07:07:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:36,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:37,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:07:37,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111880612] [2024-10-14 07:07:37,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111880612] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:07:37,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:07:37,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 07:07:37,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719779227] [2024-10-14 07:07:37,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:07:37,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 07:07:37,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:07:37,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 07:07:37,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 07:07:37,331 INFO L87 Difference]: Start difference. First operand 173 states and 241 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:37,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:07:37,681 INFO L93 Difference]: Finished difference Result 331 states and 467 transitions. [2024-10-14 07:07:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 07:07:37,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2024-10-14 07:07:37,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:07:37,682 INFO L225 Difference]: With dead ends: 331 [2024-10-14 07:07:37,682 INFO L226 Difference]: Without dead ends: 227 [2024-10-14 07:07:37,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-14 07:07:37,683 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 338 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 07:07:37,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 429 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 07:07:37,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-14 07:07:37,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 204. [2024-10-14 07:07:37,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.4088669950738917) internal successors, (286), 203 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:37,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 286 transitions. [2024-10-14 07:07:37,689 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 286 transitions. Word has length 90 [2024-10-14 07:07:37,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:07:37,689 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 286 transitions. [2024-10-14 07:07:37,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:37,689 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 286 transitions. [2024-10-14 07:07:37,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-14 07:07:37,693 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:37,693 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:07:37,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 07:07:37,693 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:37,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:37,694 INFO L85 PathProgramCache]: Analyzing trace with hash -211529888, now seen corresponding path program 1 times [2024-10-14 07:07:37,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:37,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257913488] [2024-10-14 07:07:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:37,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:38,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:38,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:07:38,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257913488] [2024-10-14 07:07:38,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257913488] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:07:38,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:07:38,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 07:07:38,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478125563] [2024-10-14 07:07:38,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:07:38,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 07:07:38,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:07:38,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 07:07:38,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 07:07:38,372 INFO L87 Difference]: Start difference. First operand 204 states and 286 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:38,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:07:38,715 INFO L93 Difference]: Finished difference Result 333 states and 468 transitions. [2024-10-14 07:07:38,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 07:07:38,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2024-10-14 07:07:38,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:07:38,717 INFO L225 Difference]: With dead ends: 333 [2024-10-14 07:07:38,717 INFO L226 Difference]: Without dead ends: 211 [2024-10-14 07:07:38,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-14 07:07:38,718 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 298 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 07:07:38,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 441 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 07:07:38,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-10-14 07:07:38,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 204. [2024-10-14 07:07:38,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.4039408866995073) internal successors, (285), 203 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:38,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 285 transitions. [2024-10-14 07:07:38,723 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 285 transitions. Word has length 91 [2024-10-14 07:07:38,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:07:38,723 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 285 transitions. [2024-10-14 07:07:38,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:38,723 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 285 transitions. [2024-10-14 07:07:38,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-14 07:07:38,724 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:38,724 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:07:38,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 07:07:38,724 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:38,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:38,725 INFO L85 PathProgramCache]: Analyzing trace with hash 363712721, now seen corresponding path program 1 times [2024-10-14 07:07:38,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:38,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73504598] [2024-10-14 07:07:38,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:38,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:40,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:07:40,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73504598] [2024-10-14 07:07:40,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73504598] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:07:40,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290981621] [2024-10-14 07:07:40,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:40,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:07:40,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:07:40,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:07:40,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 07:07:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:40,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-14 07:07:40,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:07:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:40,858 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 07:07:40,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290981621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:07:40,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 07:07:40,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2024-10-14 07:07:40,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975113314] [2024-10-14 07:07:40,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:07:40,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 07:07:40,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:07:40,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 07:07:40,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-10-14 07:07:40,860 INFO L87 Difference]: Start difference. First operand 204 states and 285 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:41,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:07:41,505 INFO L93 Difference]: Finished difference Result 419 states and 588 transitions. [2024-10-14 07:07:41,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 07:07:41,505 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2024-10-14 07:07:41,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:07:41,507 INFO L225 Difference]: With dead ends: 419 [2024-10-14 07:07:41,507 INFO L226 Difference]: Without dead ends: 315 [2024-10-14 07:07:41,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-10-14 07:07:41,508 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 301 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 07:07:41,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 400 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 07:07:41,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-10-14 07:07:41,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 282. [2024-10-14 07:07:41,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.416370106761566) internal successors, (398), 281 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 398 transitions. [2024-10-14 07:07:41,514 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 398 transitions. Word has length 92 [2024-10-14 07:07:41,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:07:41,515 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 398 transitions. [2024-10-14 07:07:41,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:41,515 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 398 transitions. [2024-10-14 07:07:41,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-14 07:07:41,515 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:41,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:07:41,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 07:07:41,716 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,SelfDestructingSolverStorable10 [2024-10-14 07:07:41,717 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:41,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:41,717 INFO L85 PathProgramCache]: Analyzing trace with hash -536977921, now seen corresponding path program 1 times [2024-10-14 07:07:41,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:41,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835453849] [2024-10-14 07:07:41,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:41,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:42,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:07:42,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835453849] [2024-10-14 07:07:42,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835453849] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:07:42,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569067206] [2024-10-14 07:07:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:42,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:07:42,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:07:42,918 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:07:42,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 07:07:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:43,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-10-14 07:07:43,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:07:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:43,995 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 07:07:43,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569067206] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:07:43,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 07:07:43,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2024-10-14 07:07:43,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546194714] [2024-10-14 07:07:43,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:07:43,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 07:07:43,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:07:43,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 07:07:43,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-10-14 07:07:43,997 INFO L87 Difference]: Start difference. First operand 282 states and 398 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:44,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:07:44,705 INFO L93 Difference]: Finished difference Result 464 states and 657 transitions. [2024-10-14 07:07:44,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 07:07:44,708 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2024-10-14 07:07:44,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:07:44,709 INFO L225 Difference]: With dead ends: 464 [2024-10-14 07:07:44,709 INFO L226 Difference]: Without dead ends: 262 [2024-10-14 07:07:44,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-10-14 07:07:44,710 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 208 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 07:07:44,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 283 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 07:07:44,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-10-14 07:07:44,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 261. [2024-10-14 07:07:44,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.4115384615384616) internal successors, (367), 260 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:44,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 367 transitions. [2024-10-14 07:07:44,714 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 367 transitions. Word has length 93 [2024-10-14 07:07:44,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:07:44,714 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 367 transitions. [2024-10-14 07:07:44,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:44,714 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 367 transitions. [2024-10-14 07:07:44,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-14 07:07:44,715 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:44,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:07:44,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 07:07:44,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:07:44,920 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:44,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:44,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1596485972, now seen corresponding path program 1 times [2024-10-14 07:07:44,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:44,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758345255] [2024-10-14 07:07:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:44,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:46,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:07:46,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758345255] [2024-10-14 07:07:46,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758345255] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:07:46,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002666455] [2024-10-14 07:07:46,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:46,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:07:46,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:07:46,285 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:07:46,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 07:07:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:46,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-14 07:07:46,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:07:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:47,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:07:47,768 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:47,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002666455] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:07:47,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:07:47,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2024-10-14 07:07:47,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913213833] [2024-10-14 07:07:47,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:07:47,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-14 07:07:47,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:07:47,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-14 07:07:47,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-10-14 07:07:47,770 INFO L87 Difference]: Start difference. First operand 261 states and 367 transitions. Second operand has 22 states, 22 states have (on average 11.545454545454545) internal successors, (254), 21 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:48,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:07:48,669 INFO L93 Difference]: Finished difference Result 478 states and 672 transitions. [2024-10-14 07:07:48,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 07:07:48,669 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.545454545454545) internal successors, (254), 21 states have internal predecessors, (254), 0 states have call successors, (0), 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 94 [2024-10-14 07:07:48,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:07:48,670 INFO L225 Difference]: With dead ends: 478 [2024-10-14 07:07:48,670 INFO L226 Difference]: Without dead ends: 320 [2024-10-14 07:07:48,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2024-10-14 07:07:48,671 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 1121 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 07:07:48,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 604 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 07:07:48,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-10-14 07:07:48,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 290. [2024-10-14 07:07:48,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.4152249134948096) internal successors, (409), 289 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 409 transitions. [2024-10-14 07:07:48,675 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 409 transitions. Word has length 94 [2024-10-14 07:07:48,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:07:48,676 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 409 transitions. [2024-10-14 07:07:48,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.545454545454545) internal successors, (254), 21 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:48,676 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 409 transitions. [2024-10-14 07:07:48,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-14 07:07:48,676 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:48,676 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 07:07:48,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 07:07:48,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:07:48,881 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:48,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:48,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1978520259, now seen corresponding path program 1 times [2024-10-14 07:07:48,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:48,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78151793] [2024-10-14 07:07:48,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:48,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 07:07:49,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:07:49,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78151793] [2024-10-14 07:07:49,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78151793] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:07:49,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133827191] [2024-10-14 07:07:49,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:49,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:07:49,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:07:49,997 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:07:49,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 07:07:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:50,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-14 07:07:50,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:07:50,652 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:50,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:07:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:51,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133827191] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:07:51,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:07:51,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 18 [2024-10-14 07:07:51,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623340603] [2024-10-14 07:07:51,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:07:51,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-14 07:07:51,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:07:51,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-14 07:07:51,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-10-14 07:07:51,084 INFO L87 Difference]: Start difference. First operand 290 states and 409 transitions. Second operand has 19 states, 19 states have (on average 13.947368421052632) internal successors, (265), 18 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:52,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:07:52,523 INFO L93 Difference]: Finished difference Result 480 states and 676 transitions. [2024-10-14 07:07:52,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-14 07:07:52,524 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.947368421052632) internal successors, (265), 18 states have internal predecessors, (265), 0 states have call successors, (0), 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 95 [2024-10-14 07:07:52,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:07:52,525 INFO L225 Difference]: With dead ends: 480 [2024-10-14 07:07:52,525 INFO L226 Difference]: Without dead ends: 322 [2024-10-14 07:07:52,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=299, Invalid=1423, Unknown=0, NotChecked=0, Total=1722 [2024-10-14 07:07:52,526 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 925 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:07:52,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 636 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-14 07:07:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-10-14 07:07:52,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 296. [2024-10-14 07:07:52,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.4101694915254237) internal successors, (416), 295 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 416 transitions. [2024-10-14 07:07:52,531 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 416 transitions. Word has length 95 [2024-10-14 07:07:52,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:07:52,531 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 416 transitions. [2024-10-14 07:07:52,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.947368421052632) internal successors, (265), 18 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 416 transitions. [2024-10-14 07:07:52,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-10-14 07:07:52,532 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:52,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:07:52,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 07:07:52,733 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,SelfDestructingSolverStorable13 [2024-10-14 07:07:52,733 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:52,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:52,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2020812696, now seen corresponding path program 1 times [2024-10-14 07:07:52,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:52,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242710572] [2024-10-14 07:07:52,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:52,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:54,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:07:54,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242710572] [2024-10-14 07:07:54,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242710572] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:07:54,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:07:54,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 07:07:54,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812079035] [2024-10-14 07:07:54,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:07:54,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 07:07:54,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:07:54,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 07:07:54,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-14 07:07:54,094 INFO L87 Difference]: Start difference. First operand 296 states and 416 transitions. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:54,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:07:54,672 INFO L93 Difference]: Finished difference Result 790 states and 1124 transitions. [2024-10-14 07:07:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 07:07:54,672 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2024-10-14 07:07:54,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:07:54,674 INFO L225 Difference]: With dead ends: 790 [2024-10-14 07:07:54,674 INFO L226 Difference]: Without dead ends: 628 [2024-10-14 07:07:54,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-10-14 07:07:54,676 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 375 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 07:07:54,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 572 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 07:07:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2024-10-14 07:07:54,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 475. [2024-10-14 07:07:54,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 1.4113924050632911) internal successors, (669), 474 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:54,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 669 transitions. [2024-10-14 07:07:54,684 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 669 transitions. Word has length 139 [2024-10-14 07:07:54,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:07:54,684 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 669 transitions. [2024-10-14 07:07:54,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:54,684 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 669 transitions. [2024-10-14 07:07:54,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-14 07:07:54,685 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:54,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:07:54,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 07:07:54,685 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:54,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1692766330, now seen corresponding path program 1 times [2024-10-14 07:07:54,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:54,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145393011] [2024-10-14 07:07:54,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:54,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:07:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:07:57,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:07:57,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145393011] [2024-10-14 07:07:57,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145393011] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:07:57,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:07:57,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-14 07:07:57,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107691975] [2024-10-14 07:07:57,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:07:57,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 07:07:57,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:07:57,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 07:07:57,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-14 07:07:57,089 INFO L87 Difference]: Start difference. First operand 475 states and 669 transitions. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:58,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:07:58,263 INFO L93 Difference]: Finished difference Result 1094 states and 1531 transitions. [2024-10-14 07:07:58,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 07:07:58,264 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2024-10-14 07:07:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:07:58,268 INFO L225 Difference]: With dead ends: 1094 [2024-10-14 07:07:58,268 INFO L226 Difference]: Without dead ends: 780 [2024-10-14 07:07:58,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-10-14 07:07:58,269 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 487 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-14 07:07:58,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 775 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1753 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-14 07:07:58,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2024-10-14 07:07:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 549. [2024-10-14 07:07:58,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 1.385036496350365) internal successors, (759), 548 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:58,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 759 transitions. [2024-10-14 07:07:58,287 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 759 transitions. Word has length 140 [2024-10-14 07:07:58,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:07:58,288 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 759 transitions. [2024-10-14 07:07:58,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:07:58,288 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 759 transitions. [2024-10-14 07:07:58,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-14 07:07:58,289 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:07:58,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:07:58,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 07:07:58,289 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:07:58,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:07:58,289 INFO L85 PathProgramCache]: Analyzing trace with hash -808005728, now seen corresponding path program 1 times [2024-10-14 07:07:58,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:07:58,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144968251] [2024-10-14 07:07:58,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:07:58,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:07:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:08:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:08:00,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:08:00,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144968251] [2024-10-14 07:08:00,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144968251] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:08:00,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521816650] [2024-10-14 07:08:00,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:08:00,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:08:00,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:08:00,161 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:08:00,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 07:08:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:08:00,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-10-14 07:08:00,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:08:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 56 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:08:01,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:08:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:08:02,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521816650] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:08:02,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:08:02,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 15] total 31 [2024-10-14 07:08:02,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184599511] [2024-10-14 07:08:02,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:08:02,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-14 07:08:02,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:08:02,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-14 07:08:02,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2024-10-14 07:08:02,300 INFO L87 Difference]: Start difference. First operand 549 states and 759 transitions. Second operand has 32 states, 32 states have (on average 11.8125) internal successors, (378), 31 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:08:05,240 INFO L93 Difference]: Finished difference Result 1571 states and 2159 transitions. [2024-10-14 07:08:05,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-10-14 07:08:05,243 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 11.8125) internal successors, (378), 31 states have internal predecessors, (378), 0 states have call successors, (0), 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 141 [2024-10-14 07:08:05,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:08:05,247 INFO L225 Difference]: With dead ends: 1571 [2024-10-14 07:08:05,247 INFO L226 Difference]: Without dead ends: 1193 [2024-10-14 07:08:05,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1883 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1047, Invalid=6609, Unknown=0, NotChecked=0, Total=7656 [2024-10-14 07:08:05,249 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 712 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 3993 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 4026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-14 07:08:05,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1235 Invalid, 4026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3993 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-14 07:08:05,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2024-10-14 07:08:05,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 759. [2024-10-14 07:08:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 1.3997361477572559) internal successors, (1061), 758 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1061 transitions. [2024-10-14 07:08:05,262 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1061 transitions. Word has length 141 [2024-10-14 07:08:05,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:08:05,262 INFO L471 AbstractCegarLoop]: Abstraction has 759 states and 1061 transitions. [2024-10-14 07:08:05,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 11.8125) internal successors, (378), 31 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:05,263 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1061 transitions. [2024-10-14 07:08:05,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-10-14 07:08:05,264 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:08:05,264 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:08:05,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 07:08:05,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 07:08:05,469 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:08:05,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:08:05,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1045806275, now seen corresponding path program 1 times [2024-10-14 07:08:05,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:08:05,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679772391] [2024-10-14 07:08:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:08:05,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:08:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:08:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 48 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:08:09,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:08:09,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679772391] [2024-10-14 07:08:09,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679772391] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:08:09,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383402291] [2024-10-14 07:08:09,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:08:09,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:08:09,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:08:09,603 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:08:09,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 07:08:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:08:10,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-10-14 07:08:10,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:08:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 48 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:08:11,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:08:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:08:12,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383402291] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:08:12,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:08:12,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21, 17] total 51 [2024-10-14 07:08:12,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313471782] [2024-10-14 07:08:12,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:08:12,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-14 07:08:12,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:08:12,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-14 07:08:12,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2317, Unknown=0, NotChecked=0, Total=2550 [2024-10-14 07:08:12,789 INFO L87 Difference]: Start difference. First operand 759 states and 1061 transitions. Second operand has 51 states, 51 states have (on average 8.0) internal successors, (408), 51 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:20,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:08:20,175 INFO L93 Difference]: Finished difference Result 3933 states and 5445 transitions. [2024-10-14 07:08:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2024-10-14 07:08:20,176 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 8.0) internal successors, (408), 51 states have internal predecessors, (408), 0 states have call successors, (0), 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 142 [2024-10-14 07:08:20,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:08:20,183 INFO L225 Difference]: With dead ends: 3933 [2024-10-14 07:08:20,184 INFO L226 Difference]: Without dead ends: 2657 [2024-10-14 07:08:20,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11565 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=3022, Invalid=31018, Unknown=0, NotChecked=0, Total=34040 [2024-10-14 07:08:20,193 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 6785 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 4510 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6785 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 4579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-14 07:08:20,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6785 Valid, 1347 Invalid, 4579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4510 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-14 07:08:20,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2024-10-14 07:08:20,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 1419. [2024-10-14 07:08:20,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 1.3921015514809592) internal successors, (1974), 1418 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:20,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 1974 transitions. [2024-10-14 07:08:20,222 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 1974 transitions. Word has length 142 [2024-10-14 07:08:20,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:08:20,223 INFO L471 AbstractCegarLoop]: Abstraction has 1419 states and 1974 transitions. [2024-10-14 07:08:20,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 8.0) internal successors, (408), 51 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:20,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 1974 transitions. [2024-10-14 07:08:20,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-14 07:08:20,225 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:08:20,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:08:20,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 07:08:20,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:08:20,430 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:08:20,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:08:20,430 INFO L85 PathProgramCache]: Analyzing trace with hash -609683307, now seen corresponding path program 1 times [2024-10-14 07:08:20,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:08:20,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924733455] [2024-10-14 07:08:20,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:08:20,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:08:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:08:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-14 07:08:21,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:08:21,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924733455] [2024-10-14 07:08:21,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924733455] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:08:21,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:08:21,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:08:21,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992399889] [2024-10-14 07:08:21,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:08:21,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 07:08:21,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:08:21,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 07:08:21,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 07:08:21,556 INFO L87 Difference]: Start difference. First operand 1419 states and 1974 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:21,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:08:21,942 INFO L93 Difference]: Finished difference Result 2499 states and 3483 transitions. [2024-10-14 07:08:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 07:08:21,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 143 [2024-10-14 07:08:21,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:08:21,946 INFO L225 Difference]: With dead ends: 2499 [2024-10-14 07:08:21,946 INFO L226 Difference]: Without dead ends: 1287 [2024-10-14 07:08:21,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 07:08:21,949 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 219 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 07:08:21,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 175 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 07:08:21,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2024-10-14 07:08:21,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1275. [2024-10-14 07:08:21,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1274 states have (on average 1.3838304552590266) internal successors, (1763), 1274 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:21,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1763 transitions. [2024-10-14 07:08:21,985 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1763 transitions. Word has length 143 [2024-10-14 07:08:21,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:08:21,987 INFO L471 AbstractCegarLoop]: Abstraction has 1275 states and 1763 transitions. [2024-10-14 07:08:21,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:21,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1763 transitions. [2024-10-14 07:08:21,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-14 07:08:21,989 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:08:21,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:08:21,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 07:08:21,989 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:08:21,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:08:21,990 INFO L85 PathProgramCache]: Analyzing trace with hash -891265935, now seen corresponding path program 1 times [2024-10-14 07:08:21,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:08:21,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923975864] [2024-10-14 07:08:21,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:08:21,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:08:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:08:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 68 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:08:26,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:08:26,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923975864] [2024-10-14 07:08:26,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923975864] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:08:26,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7634013] [2024-10-14 07:08:26,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:08:26,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:08:26,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:08:26,323 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:08:26,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 07:08:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:08:27,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-10-14 07:08:27,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:08:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:08:28,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:08:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 65 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:08:29,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7634013] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:08:29,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:08:29,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 13] total 37 [2024-10-14 07:08:29,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707139410] [2024-10-14 07:08:29,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:08:29,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-14 07:08:29,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:08:29,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-14 07:08:29,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1230, Unknown=0, NotChecked=0, Total=1406 [2024-10-14 07:08:29,613 INFO L87 Difference]: Start difference. First operand 1275 states and 1763 transitions. Second operand has 38 states, 38 states have (on average 10.263157894736842) internal successors, (390), 37 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:34,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:08:34,372 INFO L93 Difference]: Finished difference Result 4406 states and 6105 transitions. [2024-10-14 07:08:34,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-10-14 07:08:34,372 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 10.263157894736842) internal successors, (390), 37 states have internal predecessors, (390), 0 states have call successors, (0), 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 143 [2024-10-14 07:08:34,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:08:34,380 INFO L225 Difference]: With dead ends: 4406 [2024-10-14 07:08:34,380 INFO L226 Difference]: Without dead ends: 3348 [2024-10-14 07:08:34,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2735 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1105, Invalid=9401, Unknown=0, NotChecked=0, Total=10506 [2024-10-14 07:08:34,386 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 971 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 5313 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 5328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 5313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-14 07:08:34,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 1580 Invalid, 5328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 5313 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-14 07:08:34,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3348 states. [2024-10-14 07:08:34,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3348 to 2417. [2024-10-14 07:08:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 2416 states have (on average 1.3766556291390728) internal successors, (3326), 2416 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:34,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3326 transitions. [2024-10-14 07:08:34,437 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3326 transitions. Word has length 143 [2024-10-14 07:08:34,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:08:34,437 INFO L471 AbstractCegarLoop]: Abstraction has 2417 states and 3326 transitions. [2024-10-14 07:08:34,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 10.263157894736842) internal successors, (390), 37 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:34,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3326 transitions. [2024-10-14 07:08:34,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-14 07:08:34,440 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:08:34,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:08:34,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-14 07:08:34,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:08:34,644 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:08:34,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:08:34,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1263258914, now seen corresponding path program 1 times [2024-10-14 07:08:34,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:08:34,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397146039] [2024-10-14 07:08:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:08:34,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:08:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:08:35,715 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 65 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:08:35,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:08:35,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397146039] [2024-10-14 07:08:35,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397146039] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:08:35,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90938253] [2024-10-14 07:08:35,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:08:35,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:08:35,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:08:35,718 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:08:35,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 07:08:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:08:36,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-14 07:08:36,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:08:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 65 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:08:36,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:08:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 62 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:08:37,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90938253] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:08:37,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:08:37,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 11] total 23 [2024-10-14 07:08:37,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364490201] [2024-10-14 07:08:37,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:08:37,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 07:08:37,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:08:37,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 07:08:37,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2024-10-14 07:08:37,261 INFO L87 Difference]: Start difference. First operand 2417 states and 3326 transitions. Second operand has 23 states, 23 states have (on average 17.434782608695652) internal successors, (401), 23 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:38,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:08:38,772 INFO L93 Difference]: Finished difference Result 6565 states and 9101 transitions. [2024-10-14 07:08:38,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 07:08:38,772 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 17.434782608695652) internal successors, (401), 23 states have internal predecessors, (401), 0 states have call successors, (0), 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 144 [2024-10-14 07:08:38,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:08:38,782 INFO L225 Difference]: With dead ends: 6565 [2024-10-14 07:08:38,783 INFO L226 Difference]: Without dead ends: 4505 [2024-10-14 07:08:38,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=844, Unknown=0, NotChecked=0, Total=1056 [2024-10-14 07:08:38,785 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 478 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 3178 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 3182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-14 07:08:38,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1214 Invalid, 3182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 3178 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-14 07:08:38,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2024-10-14 07:08:38,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 4503. [2024-10-14 07:08:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4503 states, 4502 states have (on average 1.3738338516215016) internal successors, (6185), 4502 states have internal predecessors, (6185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:38,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4503 states to 4503 states and 6185 transitions. [2024-10-14 07:08:38,853 INFO L78 Accepts]: Start accepts. Automaton has 4503 states and 6185 transitions. Word has length 144 [2024-10-14 07:08:38,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:08:38,854 INFO L471 AbstractCegarLoop]: Abstraction has 4503 states and 6185 transitions. [2024-10-14 07:08:38,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 17.434782608695652) internal successors, (401), 23 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:38,854 INFO L276 IsEmpty]: Start isEmpty. Operand 4503 states and 6185 transitions. [2024-10-14 07:08:38,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-14 07:08:38,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:08:38,860 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:08:38,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 07:08:39,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:08:39,065 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:08:39,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:08:39,065 INFO L85 PathProgramCache]: Analyzing trace with hash -432900213, now seen corresponding path program 1 times [2024-10-14 07:08:39,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:08:39,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720183716] [2024-10-14 07:08:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:08:39,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:08:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:08:41,081 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 52 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:08:41,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:08:41,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720183716] [2024-10-14 07:08:41,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720183716] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:08:41,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006586714] [2024-10-14 07:08:41,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:08:41,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:08:41,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:08:41,087 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:08:41,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 07:08:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:08:41,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-14 07:08:41,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 07:08:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 43 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:08:42,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 07:08:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 37 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 07:08:42,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006586714] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 07:08:42,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 07:08:42,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-10-14 07:08:42,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63090548] [2024-10-14 07:08:42,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 07:08:42,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-14 07:08:42,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:08:42,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-14 07:08:42,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2024-10-14 07:08:42,626 INFO L87 Difference]: Start difference. First operand 4503 states and 6185 transitions. Second operand has 28 states, 28 states have (on average 13.642857142857142) internal successors, (382), 27 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:45,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:08:45,691 INFO L93 Difference]: Finished difference Result 19461 states and 26861 transitions. [2024-10-14 07:08:45,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-10-14 07:08:45,692 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 13.642857142857142) internal successors, (382), 27 states have internal predecessors, (382), 0 states have call successors, (0), 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 144 [2024-10-14 07:08:45,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:08:45,721 INFO L225 Difference]: With dead ends: 19461 [2024-10-14 07:08:45,722 INFO L226 Difference]: Without dead ends: 12325 [2024-10-14 07:08:45,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2136 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=947, Invalid=6885, Unknown=0, NotChecked=0, Total=7832 [2024-10-14 07:08:45,735 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 1779 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 3531 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1779 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 3543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-14 07:08:45,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1779 Valid, 1138 Invalid, 3543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3531 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-14 07:08:45,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12325 states. [2024-10-14 07:08:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12325 to 7800. [2024-10-14 07:08:45,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7800 states, 7799 states have (on average 1.3804333888960123) internal successors, (10766), 7799 states have internal predecessors, (10766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:45,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7800 states to 7800 states and 10766 transitions. [2024-10-14 07:08:45,909 INFO L78 Accepts]: Start accepts. Automaton has 7800 states and 10766 transitions. Word has length 144 [2024-10-14 07:08:45,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:08:45,909 INFO L471 AbstractCegarLoop]: Abstraction has 7800 states and 10766 transitions. [2024-10-14 07:08:45,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 13.642857142857142) internal successors, (382), 27 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 07:08:45,910 INFO L276 IsEmpty]: Start isEmpty. Operand 7800 states and 10766 transitions. [2024-10-14 07:08:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-14 07:08:45,918 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:08:45,918 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 07:08:45,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-14 07:08:46,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-14 07:08:46,123 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:08:46,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:08:46,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1066695462, now seen corresponding path program 1 times [2024-10-14 07:08:46,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:08:46,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082716419] [2024-10-14 07:08:46,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:08:46,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:08:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:08:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 67 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 07:08:50,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:08:50,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082716419] [2024-10-14 07:08:50,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082716419] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 07:08:50,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749173748] [2024-10-14 07:08:50,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:08:50,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 07:08:50,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:08:50,063 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 07:08:50,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process