./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.sw_loop.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 8bae34b88b69e395b0952f9a7e7405cfa96e2c3307dff9bcbb01737f33e4d41e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 06:51:00,509 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 06:51:00,582 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-11 06:51:00,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 06:51:00,589 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 06:51:00,618 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 06:51:00,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 06:51:00,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 06:51:00,623 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 06:51:00,624 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 06:51:00,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 06:51:00,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 06:51:00,625 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 06:51:00,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 06:51:00,628 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 06:51:00,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 06:51:00,629 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 06:51:00,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 06:51:00,629 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 06:51:00,629 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 06:51:00,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 06:51:00,633 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 06:51:00,634 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 06:51:00,634 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 06:51:00,634 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 06:51:00,635 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 06:51:00,635 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 06:51:00,635 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 06:51:00,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 06:51:00,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 06:51:00,636 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 06:51:00,636 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 06:51:00,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 06:51:00,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 06:51:00,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 06:51:00,638 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 06:51:00,638 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 06:51:00,638 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 06:51:00,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 06:51:00,638 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bae34b88b69e395b0952f9a7e7405cfa96e2c3307dff9bcbb01737f33e4d41e [2024-10-11 06:51:00,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 06:51:00,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 06:51:00,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 06:51:00,938 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 06:51:00,938 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 06:51:00,940 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop.c [2024-10-11 06:51:02,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 06:51:02,677 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 06:51:02,678 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop.c [2024-10-11 06:51:02,711 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1ae3772d5/bbbfbe43bdbe4c4b8e9c6d490036d7b9/FLAG0edf0515b [2024-10-11 06:51:02,730 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1ae3772d5/bbbfbe43bdbe4c4b8e9c6d490036d7b9 [2024-10-11 06:51:02,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 06:51:02,735 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 06:51:02,737 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 06:51:02,737 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 06:51:02,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 06:51:02,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:51:02" (1/1) ... [2024-10-11 06:51:02,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d2a29e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:02, skipping insertion in model container [2024-10-11 06:51:02,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:51:02" (1/1) ... [2024-10-11 06:51:02,785 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 06:51:02,982 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.sw_loop.c[1247,1260] [2024-10-11 06:51:03,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 06:51:03,135 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 06:51:03,149 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.sw_loop.c[1247,1260] [2024-10-11 06:51:03,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 06:51:03,239 INFO L204 MainTranslator]: Completed translation [2024-10-11 06:51:03,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:03 WrapperNode [2024-10-11 06:51:03,240 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 06:51:03,241 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 06:51:03,241 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 06:51:03,241 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 06:51:03,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:03" (1/1) ... [2024-10-11 06:51:03,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:03" (1/1) ... [2024-10-11 06:51:03,395 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1013 [2024-10-11 06:51:03,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 06:51:03,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 06:51:03,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 06:51:03,397 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 06:51:03,409 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:03" (1/1) ... [2024-10-11 06:51:03,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:03" (1/1) ... [2024-10-11 06:51:03,447 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:03" (1/1) ... [2024-10-11 06:51:03,505 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]. [2024-10-11 06:51:03,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:03" (1/1) ... [2024-10-11 06:51:03,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:03" (1/1) ... [2024-10-11 06:51:03,542 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:03" (1/1) ... [2024-10-11 06:51:03,554 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:03" (1/1) ... [2024-10-11 06:51:03,575 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:03" (1/1) ... [2024-10-11 06:51:03,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:03" (1/1) ... [2024-10-11 06:51:03,607 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 06:51:03,608 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 06:51:03,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 06:51:03,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 06:51:03,610 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:03" (1/1) ... [2024-10-11 06:51:03,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 06:51:03,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:51:03,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 06:51:03,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 06:51:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 06:51:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 06:51:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 06:51:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 06:51:03,863 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 06:51:03,868 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 06:51:05,115 INFO L? ?]: Removed 647 outVars from TransFormulas that were not future-live. [2024-10-11 06:51:05,116 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 06:51:05,164 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 06:51:05,166 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 06:51:05,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:51:05 BoogieIcfgContainer [2024-10-11 06:51:05,167 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 06:51:05,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 06:51:05,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 06:51:05,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 06:51:05,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:51:02" (1/3) ... [2024-10-11 06:51:05,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57190bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:51:05, skipping insertion in model container [2024-10-11 06:51:05,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:03" (2/3) ... [2024-10-11 06:51:05,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57190bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:51:05, skipping insertion in model container [2024-10-11 06:51:05,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:51:05" (3/3) ... [2024-10-11 06:51:05,178 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_loop.c [2024-10-11 06:51:05,194 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 06:51:05,195 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 06:51:05,269 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 06:51:05,276 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;@1dca6c71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 06:51:05,276 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 06:51:05,282 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 293 states have (on average 1.5017064846416381) internal successors, (440), 294 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:05,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-11 06:51:05,288 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:05,288 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] [2024-10-11 06:51:05,289 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:05,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:05,294 INFO L85 PathProgramCache]: Analyzing trace with hash -711317960, now seen corresponding path program 1 times [2024-10-11 06:51:05,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:05,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818025088] [2024-10-11 06:51:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:05,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:05,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:05,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818025088] [2024-10-11 06:51:05,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818025088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:05,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:05,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:05,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018639427] [2024-10-11 06:51:05,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:05,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 06:51:05,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:05,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 06:51:05,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:51:05,914 INFO L87 Difference]: Start difference. First operand has 295 states, 293 states have (on average 1.5017064846416381) internal successors, (440), 294 states have internal predecessors, (440), 0 states have call successors, (0), 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 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:06,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:06,004 INFO L93 Difference]: Finished difference Result 554 states and 828 transitions. [2024-10-11 06:51:06,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 06:51:06,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2024-10-11 06:51:06,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:06,022 INFO L225 Difference]: With dead ends: 554 [2024-10-11 06:51:06,022 INFO L226 Difference]: Without dead ends: 296 [2024-10-11 06:51:06,026 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 [2024-10-11 06:51:06,030 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 0 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1300 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 [2024-10-11 06:51:06,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1300 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:51:06,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-10-11 06:51:06,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2024-10-11 06:51:06,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.4915254237288136) internal successors, (440), 295 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:06,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 440 transitions. [2024-10-11 06:51:06,087 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 440 transitions. Word has length 26 [2024-10-11 06:51:06,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:06,088 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 440 transitions. [2024-10-11 06:51:06,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:06,090 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 440 transitions. [2024-10-11 06:51:06,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 06:51:06,092 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:06,093 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] [2024-10-11 06:51:06,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 06:51:06,093 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:06,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:06,094 INFO L85 PathProgramCache]: Analyzing trace with hash -574324984, now seen corresponding path program 1 times [2024-10-11 06:51:06,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:06,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836006964] [2024-10-11 06:51:06,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:06,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:06,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:06,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836006964] [2024-10-11 06:51:06,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836006964] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:06,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:06,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:06,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941657521] [2024-10-11 06:51:06,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:06,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 06:51:06,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:06,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 06:51:06,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:51:06,293 INFO L87 Difference]: Start difference. First operand 296 states and 440 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:06,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:06,343 INFO L93 Difference]: Finished difference Result 557 states and 828 transitions. [2024-10-11 06:51:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 06:51:06,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-10-11 06:51:06,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:06,346 INFO L225 Difference]: With dead ends: 557 [2024-10-11 06:51:06,346 INFO L226 Difference]: Without dead ends: 298 [2024-10-11 06:51:06,350 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 [2024-10-11 06:51:06,352 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 0 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1297 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 [2024-10-11 06:51:06,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1297 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:51:06,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-10-11 06:51:06,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2024-10-11 06:51:06,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.4882154882154883) internal successors, (442), 297 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:06,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 442 transitions. [2024-10-11 06:51:06,378 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 442 transitions. Word has length 27 [2024-10-11 06:51:06,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:06,380 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 442 transitions. [2024-10-11 06:51:06,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:06,381 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 442 transitions. [2024-10-11 06:51:06,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 06:51:06,382 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:06,382 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] [2024-10-11 06:51:06,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 06:51:06,383 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:06,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:06,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1722171119, now seen corresponding path program 1 times [2024-10-11 06:51:06,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:06,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847420660] [2024-10-11 06:51:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:06,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:06,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:06,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847420660] [2024-10-11 06:51:06,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847420660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:06,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:06,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:06,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565178889] [2024-10-11 06:51:06,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:06,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:06,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:06,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:06,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:06,612 INFO L87 Difference]: Start difference. First operand 298 states and 442 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:06,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:06,730 INFO L93 Difference]: Finished difference Result 794 states and 1179 transitions. [2024-10-11 06:51:06,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:06,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2024-10-11 06:51:06,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:06,734 INFO L225 Difference]: With dead ends: 794 [2024-10-11 06:51:06,734 INFO L226 Difference]: Without dead ends: 533 [2024-10-11 06:51:06,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:06,737 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 1117 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:06,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1270 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:06,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-10-11 06:51:06,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 300. [2024-10-11 06:51:06,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.4849498327759196) internal successors, (444), 299 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 444 transitions. [2024-10-11 06:51:06,759 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 444 transitions. Word has length 28 [2024-10-11 06:51:06,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:06,759 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 444 transitions. [2024-10-11 06:51:06,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:06,759 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 444 transitions. [2024-10-11 06:51:06,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-10-11 06:51:06,770 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:06,771 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:06,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 06:51:06,771 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:06,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:06,773 INFO L85 PathProgramCache]: Analyzing trace with hash -377128560, now seen corresponding path program 1 times [2024-10-11 06:51:06,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:06,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49995449] [2024-10-11 06:51:06,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:06,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:08,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:08,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49995449] [2024-10-11 06:51:08,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49995449] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:08,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:08,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:51:08,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867037162] [2024-10-11 06:51:08,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:08,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:51:08,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:08,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:51:08,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:51:08,189 INFO L87 Difference]: Start difference. First operand 300 states and 444 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:08,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:08,326 INFO L93 Difference]: Finished difference Result 777 states and 1153 transitions. [2024-10-11 06:51:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:51:08,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2024-10-11 06:51:08,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:08,331 INFO L225 Difference]: With dead ends: 777 [2024-10-11 06:51:08,331 INFO L226 Difference]: Without dead ends: 516 [2024-10-11 06:51:08,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-11 06:51:08,333 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 1048 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:08,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1689 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:08,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-10-11 06:51:08,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 325. [2024-10-11 06:51:08,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.4753086419753085) internal successors, (478), 324 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:08,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 478 transitions. [2024-10-11 06:51:08,347 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 478 transitions. Word has length 157 [2024-10-11 06:51:08,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:08,348 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 478 transitions. [2024-10-11 06:51:08,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:08,348 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 478 transitions. [2024-10-11 06:51:08,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-10-11 06:51:08,355 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:08,355 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:08,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 06:51:08,356 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:08,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:08,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1346328412, now seen corresponding path program 1 times [2024-10-11 06:51:08,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:08,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458986976] [2024-10-11 06:51:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:08,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:09,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:09,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458986976] [2024-10-11 06:51:09,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458986976] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:09,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:09,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:09,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865560715] [2024-10-11 06:51:09,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:09,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:09,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:09,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:09,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:09,654 INFO L87 Difference]: Start difference. First operand 325 states and 478 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:09,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:09,777 INFO L93 Difference]: Finished difference Result 777 states and 1151 transitions. [2024-10-11 06:51:09,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:09,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2024-10-11 06:51:09,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:09,782 INFO L225 Difference]: With dead ends: 777 [2024-10-11 06:51:09,782 INFO L226 Difference]: Without dead ends: 516 [2024-10-11 06:51:09,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:09,785 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 1026 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:09,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1258 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:09,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-10-11 06:51:09,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 354. [2024-10-11 06:51:09,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 1.4730878186968839) internal successors, (520), 353 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 520 transitions. [2024-10-11 06:51:09,800 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 520 transitions. Word has length 158 [2024-10-11 06:51:09,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:09,801 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 520 transitions. [2024-10-11 06:51:09,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:09,801 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 520 transitions. [2024-10-11 06:51:09,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-10-11 06:51:09,808 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:09,808 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:09,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 06:51:09,809 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:09,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:09,809 INFO L85 PathProgramCache]: Analyzing trace with hash -733668633, now seen corresponding path program 1 times [2024-10-11 06:51:09,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:09,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342638800] [2024-10-11 06:51:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:09,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:11,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:11,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342638800] [2024-10-11 06:51:11,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342638800] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:11,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:11,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:11,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922513279] [2024-10-11 06:51:11,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:11,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:11,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:11,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:11,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:11,234 INFO L87 Difference]: Start difference. First operand 354 states and 520 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:11,372 INFO L93 Difference]: Finished difference Result 777 states and 1149 transitions. [2024-10-11 06:51:11,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:11,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2024-10-11 06:51:11,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:11,377 INFO L225 Difference]: With dead ends: 777 [2024-10-11 06:51:11,377 INFO L226 Difference]: Without dead ends: 516 [2024-10-11 06:51:11,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:11,379 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 996 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:11,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1257 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:11,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-10-11 06:51:11,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 405. [2024-10-11 06:51:11,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 1.4727722772277227) internal successors, (595), 404 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 595 transitions. [2024-10-11 06:51:11,396 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 595 transitions. Word has length 160 [2024-10-11 06:51:11,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:11,396 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 595 transitions. [2024-10-11 06:51:11,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:11,400 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 595 transitions. [2024-10-11 06:51:11,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-11 06:51:11,404 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:11,404 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:11,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 06:51:11,405 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:11,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:11,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2041173522, now seen corresponding path program 1 times [2024-10-11 06:51:11,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:11,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115910026] [2024-10-11 06:51:11,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:11,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:12,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:12,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115910026] [2024-10-11 06:51:12,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115910026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:12,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:12,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:12,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616132061] [2024-10-11 06:51:12,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:12,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:12,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:12,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:12,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:12,738 INFO L87 Difference]: Start difference. First operand 405 states and 595 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:12,848 INFO L93 Difference]: Finished difference Result 777 states and 1148 transitions. [2024-10-11 06:51:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:12,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-10-11 06:51:12,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:12,852 INFO L225 Difference]: With dead ends: 777 [2024-10-11 06:51:12,852 INFO L226 Difference]: Without dead ends: 516 [2024-10-11 06:51:12,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:12,853 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 979 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:12,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 1257 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:12,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-10-11 06:51:12,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 433. [2024-10-11 06:51:12,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.4722222222222223) internal successors, (636), 432 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 636 transitions. [2024-10-11 06:51:12,870 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 636 transitions. Word has length 161 [2024-10-11 06:51:12,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:12,871 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 636 transitions. [2024-10-11 06:51:12,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:12,871 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 636 transitions. [2024-10-11 06:51:12,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-11 06:51:12,873 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:12,874 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:12,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 06:51:12,874 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:12,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:12,875 INFO L85 PathProgramCache]: Analyzing trace with hash -703692392, now seen corresponding path program 1 times [2024-10-11 06:51:12,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:12,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430386477] [2024-10-11 06:51:12,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:12,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:14,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:14,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:14,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430386477] [2024-10-11 06:51:14,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430386477] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:14,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:14,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:14,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551765721] [2024-10-11 06:51:14,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:14,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:14,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:14,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:14,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:14,092 INFO L87 Difference]: Start difference. First operand 433 states and 636 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:14,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:14,206 INFO L93 Difference]: Finished difference Result 777 states and 1147 transitions. [2024-10-11 06:51:14,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:14,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2024-10-11 06:51:14,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:14,210 INFO L225 Difference]: With dead ends: 777 [2024-10-11 06:51:14,210 INFO L226 Difference]: Without dead ends: 516 [2024-10-11 06:51:14,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:14,211 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 948 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:14,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1257 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:14,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-10-11 06:51:14,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 489. [2024-10-11 06:51:14,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.473360655737705) internal successors, (719), 488 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:14,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 719 transitions. [2024-10-11 06:51:14,228 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 719 transitions. Word has length 162 [2024-10-11 06:51:14,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:14,229 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 719 transitions. [2024-10-11 06:51:14,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:14,230 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 719 transitions. [2024-10-11 06:51:14,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-11 06:51:14,231 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:14,231 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:14,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 06:51:14,232 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:14,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:14,232 INFO L85 PathProgramCache]: Analyzing trace with hash -421335372, now seen corresponding path program 1 times [2024-10-11 06:51:14,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:14,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839012958] [2024-10-11 06:51:14,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:14,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:15,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:15,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:15,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839012958] [2024-10-11 06:51:15,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839012958] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:15,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:15,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:15,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729236426] [2024-10-11 06:51:15,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:15,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:15,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:15,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:15,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:15,328 INFO L87 Difference]: Start difference. First operand 489 states and 719 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:15,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:15,475 INFO L93 Difference]: Finished difference Result 835 states and 1232 transitions. [2024-10-11 06:51:15,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:15,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2024-10-11 06:51:15,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:15,478 INFO L225 Difference]: With dead ends: 835 [2024-10-11 06:51:15,479 INFO L226 Difference]: Without dead ends: 524 [2024-10-11 06:51:15,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:15,483 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 997 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:15,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 1984 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:15,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-10-11 06:51:15,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 491. [2024-10-11 06:51:15,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 490 states have (on average 1.4714285714285715) internal successors, (721), 490 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:15,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 721 transitions. [2024-10-11 06:51:15,498 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 721 transitions. Word has length 163 [2024-10-11 06:51:15,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:15,499 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 721 transitions. [2024-10-11 06:51:15,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:15,499 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 721 transitions. [2024-10-11 06:51:15,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-11 06:51:15,501 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:15,502 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:15,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 06:51:15,502 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:15,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:15,503 INFO L85 PathProgramCache]: Analyzing trace with hash -678229837, now seen corresponding path program 1 times [2024-10-11 06:51:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:15,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181215585] [2024-10-11 06:51:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:15,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:16,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:16,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181215585] [2024-10-11 06:51:16,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181215585] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:16,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:16,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:16,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404285282] [2024-10-11 06:51:16,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:16,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:16,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:16,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:16,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:16,631 INFO L87 Difference]: Start difference. First operand 491 states and 721 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:16,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:16,771 INFO L93 Difference]: Finished difference Result 787 states and 1160 transitions. [2024-10-11 06:51:16,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:16,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2024-10-11 06:51:16,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:16,774 INFO L225 Difference]: With dead ends: 787 [2024-10-11 06:51:16,774 INFO L226 Difference]: Without dead ends: 526 [2024-10-11 06:51:16,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:16,776 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 967 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:16,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 1870 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:16,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-11 06:51:16,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 494. [2024-10-11 06:51:16,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 1.4705882352941178) internal successors, (725), 493 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:16,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 725 transitions. [2024-10-11 06:51:16,787 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 725 transitions. Word has length 164 [2024-10-11 06:51:16,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:16,788 INFO L471 AbstractCegarLoop]: Abstraction has 494 states and 725 transitions. [2024-10-11 06:51:16,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:16,788 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 725 transitions. [2024-10-11 06:51:16,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-11 06:51:16,789 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:16,790 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:16,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 06:51:16,790 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:16,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:16,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1725972576, now seen corresponding path program 1 times [2024-10-11 06:51:16,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:16,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510349733] [2024-10-11 06:51:16,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:16,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:17,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:17,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510349733] [2024-10-11 06:51:17,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510349733] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:17,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:17,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:17,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658734291] [2024-10-11 06:51:17,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:17,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:17,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:17,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:17,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:17,889 INFO L87 Difference]: Start difference. First operand 494 states and 725 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:17,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:17,990 INFO L93 Difference]: Finished difference Result 810 states and 1192 transitions. [2024-10-11 06:51:17,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:17,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2024-10-11 06:51:17,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:17,993 INFO L225 Difference]: With dead ends: 810 [2024-10-11 06:51:17,993 INFO L226 Difference]: Without dead ends: 520 [2024-10-11 06:51:17,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:17,995 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 959 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:17,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 1257 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:17,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-10-11 06:51:18,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 494. [2024-10-11 06:51:18,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 1.4685598377281948) internal successors, (724), 493 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:18,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 724 transitions. [2024-10-11 06:51:18,005 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 724 transitions. Word has length 165 [2024-10-11 06:51:18,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:18,005 INFO L471 AbstractCegarLoop]: Abstraction has 494 states and 724 transitions. [2024-10-11 06:51:18,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:18,006 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 724 transitions. [2024-10-11 06:51:18,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-11 06:51:18,007 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:18,007 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:18,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 06:51:18,008 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:18,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:18,008 INFO L85 PathProgramCache]: Analyzing trace with hash 493339209, now seen corresponding path program 1 times [2024-10-11 06:51:18,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:18,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420184463] [2024-10-11 06:51:18,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:18,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:19,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:19,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420184463] [2024-10-11 06:51:19,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420184463] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:19,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:19,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:19,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209504951] [2024-10-11 06:51:19,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:19,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:19,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:19,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:19,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:19,050 INFO L87 Difference]: Start difference. First operand 494 states and 724 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:19,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:19,200 INFO L93 Difference]: Finished difference Result 814 states and 1197 transitions. [2024-10-11 06:51:19,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:19,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2024-10-11 06:51:19,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:19,203 INFO L225 Difference]: With dead ends: 814 [2024-10-11 06:51:19,203 INFO L226 Difference]: Without dead ends: 528 [2024-10-11 06:51:19,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:19,205 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 978 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:19,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 2098 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:19,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-10-11 06:51:19,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 496. [2024-10-11 06:51:19,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 1.4666666666666666) internal successors, (726), 495 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:19,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 726 transitions. [2024-10-11 06:51:19,217 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 726 transitions. Word has length 166 [2024-10-11 06:51:19,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:19,217 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 726 transitions. [2024-10-11 06:51:19,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:19,218 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 726 transitions. [2024-10-11 06:51:19,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-11 06:51:19,219 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:19,219 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:19,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 06:51:19,220 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:19,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:19,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1366309657, now seen corresponding path program 1 times [2024-10-11 06:51:19,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:19,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616983162] [2024-10-11 06:51:19,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:19,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:20,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:20,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616983162] [2024-10-11 06:51:20,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616983162] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:20,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:20,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:20,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759092410] [2024-10-11 06:51:20,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:20,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:20,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:20,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:20,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:20,343 INFO L87 Difference]: Start difference. First operand 496 states and 726 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:20,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:20,482 INFO L93 Difference]: Finished difference Result 816 states and 1199 transitions. [2024-10-11 06:51:20,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:20,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-10-11 06:51:20,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:20,485 INFO L225 Difference]: With dead ends: 816 [2024-10-11 06:51:20,485 INFO L226 Difference]: Without dead ends: 534 [2024-10-11 06:51:20,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:20,487 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 988 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:20,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 1988 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:20,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-10-11 06:51:20,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 498. [2024-10-11 06:51:20,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 1.4647887323943662) internal successors, (728), 497 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:20,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 728 transitions. [2024-10-11 06:51:20,498 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 728 transitions. Word has length 167 [2024-10-11 06:51:20,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:20,499 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 728 transitions. [2024-10-11 06:51:20,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:20,499 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 728 transitions. [2024-10-11 06:51:20,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-11 06:51:20,501 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:20,501 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:20,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 06:51:20,501 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:20,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:20,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1467180925, now seen corresponding path program 1 times [2024-10-11 06:51:20,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:20,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670703813] [2024-10-11 06:51:20,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:20,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:21,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:21,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:21,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670703813] [2024-10-11 06:51:21,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670703813] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:21,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:21,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:21,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699235623] [2024-10-11 06:51:21,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:21,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:21,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:21,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:21,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:21,551 INFO L87 Difference]: Start difference. First operand 498 states and 728 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:21,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:21,689 INFO L93 Difference]: Finished difference Result 797 states and 1171 transitions. [2024-10-11 06:51:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:21,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-10-11 06:51:21,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:21,692 INFO L225 Difference]: With dead ends: 797 [2024-10-11 06:51:21,693 INFO L226 Difference]: Without dead ends: 536 [2024-10-11 06:51:21,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:21,694 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 971 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:21,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 2098 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:21,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2024-10-11 06:51:21,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 504. [2024-10-11 06:51:21,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 1.463220675944334) internal successors, (736), 503 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 736 transitions. [2024-10-11 06:51:21,704 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 736 transitions. Word has length 167 [2024-10-11 06:51:21,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:21,705 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 736 transitions. [2024-10-11 06:51:21,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 736 transitions. [2024-10-11 06:51:21,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-11 06:51:21,707 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:21,707 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:21,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 06:51:21,707 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:21,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:21,708 INFO L85 PathProgramCache]: Analyzing trace with hash -42195937, now seen corresponding path program 1 times [2024-10-11 06:51:21,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:21,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975085884] [2024-10-11 06:51:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:21,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:22,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:22,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:22,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975085884] [2024-10-11 06:51:22,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975085884] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:22,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:22,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:22,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989800129] [2024-10-11 06:51:22,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:22,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:22,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:22,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:22,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:22,854 INFO L87 Difference]: Start difference. First operand 504 states and 736 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:22,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:22,957 INFO L93 Difference]: Finished difference Result 790 states and 1160 transitions. [2024-10-11 06:51:22,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:22,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-10-11 06:51:22,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:22,960 INFO L225 Difference]: With dead ends: 790 [2024-10-11 06:51:22,960 INFO L226 Difference]: Without dead ends: 529 [2024-10-11 06:51:22,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:22,963 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 931 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:22,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 1253 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:22,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-10-11 06:51:22,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 527. [2024-10-11 06:51:22,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.461977186311787) internal successors, (769), 526 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:22,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 769 transitions. [2024-10-11 06:51:22,977 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 769 transitions. Word has length 167 [2024-10-11 06:51:22,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:22,977 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 769 transitions. [2024-10-11 06:51:22,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:22,977 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 769 transitions. [2024-10-11 06:51:22,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-11 06:51:22,980 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:22,980 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:22,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 06:51:22,981 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:22,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:22,981 INFO L85 PathProgramCache]: Analyzing trace with hash 65233822, now seen corresponding path program 1 times [2024-10-11 06:51:22,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:22,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056697403] [2024-10-11 06:51:22,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:22,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:24,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:24,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056697403] [2024-10-11 06:51:24,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056697403] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:24,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:24,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:24,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893690194] [2024-10-11 06:51:24,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:24,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:24,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:24,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:24,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:24,131 INFO L87 Difference]: Start difference. First operand 527 states and 769 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:24,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:24,272 INFO L93 Difference]: Finished difference Result 795 states and 1166 transitions. [2024-10-11 06:51:24,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:24,273 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2024-10-11 06:51:24,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:24,276 INFO L225 Difference]: With dead ends: 795 [2024-10-11 06:51:24,276 INFO L226 Difference]: Without dead ends: 534 [2024-10-11 06:51:24,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:24,279 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 940 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:24,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 1870 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:24,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-10-11 06:51:24,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 530. [2024-10-11 06:51:24,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 1.4612476370510397) internal successors, (773), 529 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:24,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 773 transitions. [2024-10-11 06:51:24,294 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 773 transitions. Word has length 168 [2024-10-11 06:51:24,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:24,294 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 773 transitions. [2024-10-11 06:51:24,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:24,295 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 773 transitions. [2024-10-11 06:51:24,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-10-11 06:51:24,297 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:24,297 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:24,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 06:51:24,298 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:24,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:24,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1517848154, now seen corresponding path program 1 times [2024-10-11 06:51:24,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:24,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534238357] [2024-10-11 06:51:24,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:24,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:25,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:25,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534238357] [2024-10-11 06:51:25,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534238357] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:25,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:25,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:25,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104398068] [2024-10-11 06:51:25,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:25,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:25,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:25,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:25,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:25,396 INFO L87 Difference]: Start difference. First operand 530 states and 773 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:25,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:25,528 INFO L93 Difference]: Finished difference Result 801 states and 1174 transitions. [2024-10-11 06:51:25,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:25,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2024-10-11 06:51:25,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:25,531 INFO L225 Difference]: With dead ends: 801 [2024-10-11 06:51:25,532 INFO L226 Difference]: Without dead ends: 540 [2024-10-11 06:51:25,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:25,533 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 948 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:25,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 2094 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:25,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2024-10-11 06:51:25,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 536. [2024-10-11 06:51:25,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.4598130841121495) internal successors, (781), 535 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:25,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 781 transitions. [2024-10-11 06:51:25,545 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 781 transitions. Word has length 169 [2024-10-11 06:51:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:25,546 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 781 transitions. [2024-10-11 06:51:25,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:25,546 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 781 transitions. [2024-10-11 06:51:25,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-10-11 06:51:25,548 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:25,548 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:25,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 06:51:25,548 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:25,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:25,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1985431106, now seen corresponding path program 1 times [2024-10-11 06:51:25,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:25,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738523151] [2024-10-11 06:51:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:25,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:26,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:26,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738523151] [2024-10-11 06:51:26,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738523151] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:51:26,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263729804] [2024-10-11 06:51:26,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:26,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:26,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:51:26,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:51:26,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 06:51:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:27,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-11 06:51:27,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:51:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:27,623 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 06:51:27,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263729804] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:27,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 06:51:27,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-10-11 06:51:27,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658601832] [2024-10-11 06:51:27,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:27,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:27,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:27,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:27,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-10-11 06:51:27,626 INFO L87 Difference]: Start difference. First operand 536 states and 781 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:27,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:27,975 INFO L93 Difference]: Finished difference Result 1002 states and 1462 transitions. [2024-10-11 06:51:27,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:27,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2024-10-11 06:51:27,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:27,978 INFO L225 Difference]: With dead ends: 1002 [2024-10-11 06:51:27,978 INFO L226 Difference]: Without dead ends: 539 [2024-10-11 06:51:27,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-10-11 06:51:27,986 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 721 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:27,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 1817 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 06:51:27,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-10-11 06:51:28,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-10-11 06:51:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.4572490706319703) internal successors, (784), 538 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:28,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 784 transitions. [2024-10-11 06:51:28,017 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 784 transitions. Word has length 169 [2024-10-11 06:51:28,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:28,017 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 784 transitions. [2024-10-11 06:51:28,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:28,018 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 784 transitions. [2024-10-11 06:51:28,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-10-11 06:51:28,019 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:28,020 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:28,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 06:51:28,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 06:51:28,222 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:28,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:28,222 INFO L85 PathProgramCache]: Analyzing trace with hash 357175695, now seen corresponding path program 1 times [2024-10-11 06:51:28,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:28,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904678339] [2024-10-11 06:51:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:28,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:29,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:29,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904678339] [2024-10-11 06:51:29,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904678339] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:29,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:29,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:29,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891749676] [2024-10-11 06:51:29,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:29,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:29,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:29,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:29,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:29,141 INFO L87 Difference]: Start difference. First operand 539 states and 784 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:29,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:29,243 INFO L93 Difference]: Finished difference Result 929 states and 1354 transitions. [2024-10-11 06:51:29,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:29,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2024-10-11 06:51:29,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:29,245 INFO L225 Difference]: With dead ends: 929 [2024-10-11 06:51:29,246 INFO L226 Difference]: Without dead ends: 539 [2024-10-11 06:51:29,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:29,247 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 986 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:29,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1258 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:29,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-10-11 06:51:29,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-10-11 06:51:29,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.4553903345724908) internal successors, (783), 538 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 783 transitions. [2024-10-11 06:51:29,258 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 783 transitions. Word has length 170 [2024-10-11 06:51:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:29,259 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 783 transitions. [2024-10-11 06:51:29,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 783 transitions. [2024-10-11 06:51:29,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-11 06:51:29,261 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:29,261 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:29,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 06:51:29,262 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:29,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash -514776051, now seen corresponding path program 1 times [2024-10-11 06:51:29,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:29,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709778053] [2024-10-11 06:51:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:29,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:30,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:30,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:30,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709778053] [2024-10-11 06:51:30,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709778053] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:30,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:30,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:30,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786195922] [2024-10-11 06:51:30,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:30,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:30,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:30,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:30,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:30,131 INFO L87 Difference]: Start difference. First operand 539 states and 783 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:30,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:30,242 INFO L93 Difference]: Finished difference Result 897 states and 1307 transitions. [2024-10-11 06:51:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:30,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2024-10-11 06:51:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:30,245 INFO L225 Difference]: With dead ends: 897 [2024-10-11 06:51:30,245 INFO L226 Difference]: Without dead ends: 537 [2024-10-11 06:51:30,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:30,247 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 968 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:30,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 1258 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:30,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-10-11 06:51:30,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2024-10-11 06:51:30,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.455223880597015) internal successors, (780), 536 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:30,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 780 transitions. [2024-10-11 06:51:30,263 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 780 transitions. Word has length 171 [2024-10-11 06:51:30,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:30,263 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 780 transitions. [2024-10-11 06:51:30,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:30,264 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 780 transitions. [2024-10-11 06:51:30,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-11 06:51:30,265 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:30,265 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:30,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 06:51:30,266 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:30,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:30,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1766668119, now seen corresponding path program 1 times [2024-10-11 06:51:30,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:30,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517304513] [2024-10-11 06:51:30,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:30,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 06:51:32,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:32,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517304513] [2024-10-11 06:51:32,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517304513] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:51:32,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112880030] [2024-10-11 06:51:32,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:32,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:32,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:51:32,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:51:32,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 06:51:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:33,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-10-11 06:51:33,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:51:34,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:34,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:51:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:35,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112880030] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 06:51:35,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 06:51:35,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 11] total 32 [2024-10-11 06:51:35,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506605049] [2024-10-11 06:51:35,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 06:51:35,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-11 06:51:35,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:35,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-11 06:51:35,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=916, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 06:51:35,090 INFO L87 Difference]: Start difference. First operand 537 states and 780 transitions. Second operand has 33 states, 33 states have (on average 15.181818181818182) internal successors, (501), 32 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:36,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:36,817 INFO L93 Difference]: Finished difference Result 1803 states and 2634 transitions. [2024-10-11 06:51:36,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 06:51:36,818 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 15.181818181818182) internal successors, (501), 32 states have internal predecessors, (501), 0 states have call successors, (0), 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 171 [2024-10-11 06:51:36,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:36,823 INFO L225 Difference]: With dead ends: 1803 [2024-10-11 06:51:36,823 INFO L226 Difference]: Without dead ends: 1324 [2024-10-11 06:51:36,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=518, Invalid=2674, Unknown=0, NotChecked=0, Total=3192 [2024-10-11 06:51:36,825 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 7895 mSDsluCounter, 7442 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7895 SdHoareTripleChecker+Valid, 7792 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:36,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7895 Valid, 7792 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-11 06:51:36,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2024-10-11 06:51:36,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1003. [2024-10-11 06:51:36,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 1002 states have (on average 1.4530938123752495) internal successors, (1456), 1002 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:36,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1456 transitions. [2024-10-11 06:51:36,846 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1456 transitions. Word has length 171 [2024-10-11 06:51:36,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:36,846 INFO L471 AbstractCegarLoop]: Abstraction has 1003 states and 1456 transitions. [2024-10-11 06:51:36,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 15.181818181818182) internal successors, (501), 32 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:36,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1456 transitions. [2024-10-11 06:51:36,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-11 06:51:36,849 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:36,849 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:36,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 06:51:37,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:37,050 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:37,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:37,051 INFO L85 PathProgramCache]: Analyzing trace with hash -441385041, now seen corresponding path program 1 times [2024-10-11 06:51:37,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:37,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213311546] [2024-10-11 06:51:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:37,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:37,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:37,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213311546] [2024-10-11 06:51:37,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213311546] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:37,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:37,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:51:37,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107430995] [2024-10-11 06:51:37,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:37,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:37,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:37,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:37,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:37,594 INFO L87 Difference]: Start difference. First operand 1003 states and 1456 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:37,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:37,655 INFO L93 Difference]: Finished difference Result 1983 states and 2882 transitions. [2024-10-11 06:51:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:37,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2024-10-11 06:51:37,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:37,660 INFO L225 Difference]: With dead ends: 1983 [2024-10-11 06:51:37,660 INFO L226 Difference]: Without dead ends: 1030 [2024-10-11 06:51:37,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:37,663 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 5 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:37,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2568 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:51:37,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2024-10-11 06:51:37,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1030. [2024-10-11 06:51:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 1029 states have (on average 1.4489795918367347) internal successors, (1491), 1029 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:37,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1491 transitions. [2024-10-11 06:51:37,682 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1491 transitions. Word has length 172 [2024-10-11 06:51:37,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:37,682 INFO L471 AbstractCegarLoop]: Abstraction has 1030 states and 1491 transitions. [2024-10-11 06:51:37,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1491 transitions. [2024-10-11 06:51:37,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-11 06:51:37,684 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:37,685 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:37,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 06:51:37,685 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:37,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:37,685 INFO L85 PathProgramCache]: Analyzing trace with hash 703801800, now seen corresponding path program 1 times [2024-10-11 06:51:37,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:37,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337474932] [2024-10-11 06:51:37,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:37,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:38,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:38,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:38,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337474932] [2024-10-11 06:51:38,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337474932] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:38,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:38,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:38,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209346339] [2024-10-11 06:51:38,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:38,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:38,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:38,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:38,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:38,066 INFO L87 Difference]: Start difference. First operand 1030 states and 1491 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:38,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:38,131 INFO L93 Difference]: Finished difference Result 1529 states and 2214 transitions. [2024-10-11 06:51:38,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:38,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2024-10-11 06:51:38,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:38,135 INFO L225 Difference]: With dead ends: 1529 [2024-10-11 06:51:38,136 INFO L226 Difference]: Without dead ends: 1032 [2024-10-11 06:51:38,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:38,137 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 1053 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:38,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 1270 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:51:38,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2024-10-11 06:51:38,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1020. [2024-10-11 06:51:38,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 1019 states have (on average 1.4474975466143278) internal successors, (1475), 1019 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:38,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1475 transitions. [2024-10-11 06:51:38,156 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1475 transitions. Word has length 172 [2024-10-11 06:51:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:38,157 INFO L471 AbstractCegarLoop]: Abstraction has 1020 states and 1475 transitions. [2024-10-11 06:51:38,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:38,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1475 transitions. [2024-10-11 06:51:38,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-11 06:51:38,159 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:38,159 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:38,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-11 06:51:38,159 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:38,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:38,160 INFO L85 PathProgramCache]: Analyzing trace with hash 169719223, now seen corresponding path program 1 times [2024-10-11 06:51:38,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:38,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220512454] [2024-10-11 06:51:38,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:38,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:38,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:38,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220512454] [2024-10-11 06:51:38,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220512454] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:38,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:38,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:38,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901246930] [2024-10-11 06:51:38,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:38,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:38,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:38,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:38,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:38,575 INFO L87 Difference]: Start difference. First operand 1020 states and 1475 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:38,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:38,640 INFO L93 Difference]: Finished difference Result 2010 states and 2909 transitions. [2024-10-11 06:51:38,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:38,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2024-10-11 06:51:38,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:38,644 INFO L225 Difference]: With dead ends: 2010 [2024-10-11 06:51:38,644 INFO L226 Difference]: Without dead ends: 1045 [2024-10-11 06:51:38,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:38,647 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 1071 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:38,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1271 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:51:38,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2024-10-11 06:51:38,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1017. [2024-10-11 06:51:38,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1016 states have (on average 1.4458661417322836) internal successors, (1469), 1016 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:38,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1469 transitions. [2024-10-11 06:51:38,667 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1469 transitions. Word has length 173 [2024-10-11 06:51:38,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:38,667 INFO L471 AbstractCegarLoop]: Abstraction has 1017 states and 1469 transitions. [2024-10-11 06:51:38,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:38,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1469 transitions. [2024-10-11 06:51:38,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-11 06:51:38,669 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:38,670 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:38,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-11 06:51:38,670 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:38,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:38,671 INFO L85 PathProgramCache]: Analyzing trace with hash -179375298, now seen corresponding path program 1 times [2024-10-11 06:51:38,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:38,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002538391] [2024-10-11 06:51:38,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:38,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:39,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:39,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002538391] [2024-10-11 06:51:39,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002538391] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:39,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:39,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:39,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776851068] [2024-10-11 06:51:39,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:39,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:39,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:39,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:39,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:39,044 INFO L87 Difference]: Start difference. First operand 1017 states and 1469 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:39,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:39,121 INFO L93 Difference]: Finished difference Result 1783 states and 2587 transitions. [2024-10-11 06:51:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:39,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2024-10-11 06:51:39,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:39,125 INFO L225 Difference]: With dead ends: 1783 [2024-10-11 06:51:39,125 INFO L226 Difference]: Without dead ends: 817 [2024-10-11 06:51:39,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:39,126 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 1089 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:39,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 1264 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:39,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2024-10-11 06:51:39,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 791. [2024-10-11 06:51:39,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 1.4544303797468354) internal successors, (1149), 790 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:39,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1149 transitions. [2024-10-11 06:51:39,140 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1149 transitions. Word has length 173 [2024-10-11 06:51:39,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:39,140 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 1149 transitions. [2024-10-11 06:51:39,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:39,140 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1149 transitions. [2024-10-11 06:51:39,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-10-11 06:51:39,144 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:39,144 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:39,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-11 06:51:39,144 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:39,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:39,145 INFO L85 PathProgramCache]: Analyzing trace with hash 91401863, now seen corresponding path program 1 times [2024-10-11 06:51:39,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:39,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387940091] [2024-10-11 06:51:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:39,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:42,011 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:42,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:42,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387940091] [2024-10-11 06:51:42,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387940091] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:42,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:42,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 06:51:42,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995668693] [2024-10-11 06:51:42,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:42,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 06:51:42,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:42,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 06:51:42,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-11 06:51:42,015 INFO L87 Difference]: Start difference. First operand 791 states and 1149 transitions. Second operand has 9 states, 9 states have (on average 33.44444444444444) internal successors, (301), 8 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:42,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:42,440 INFO L93 Difference]: Finished difference Result 2902 states and 4273 transitions. [2024-10-11 06:51:42,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 06:51:42,440 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 33.44444444444444) internal successors, (301), 8 states have internal predecessors, (301), 0 states have call successors, (0), 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 301 [2024-10-11 06:51:42,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:42,449 INFO L225 Difference]: With dead ends: 2902 [2024-10-11 06:51:42,449 INFO L226 Difference]: Without dead ends: 2377 [2024-10-11 06:51:42,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-10-11 06:51:42,452 INFO L432 NwaCegarLoop]: 692 mSDtfsCounter, 1488 mSDsluCounter, 3852 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 4544 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:42,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 4544 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 06:51:42,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2024-10-11 06:51:42,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 1503. [2024-10-11 06:51:42,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1502 states have (on average 1.4580559254327563) internal successors, (2190), 1502 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:42,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 2190 transitions. [2024-10-11 06:51:42,499 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 2190 transitions. Word has length 301 [2024-10-11 06:51:42,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:42,499 INFO L471 AbstractCegarLoop]: Abstraction has 1503 states and 2190 transitions. [2024-10-11 06:51:42,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 33.44444444444444) internal successors, (301), 8 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:42,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 2190 transitions. [2024-10-11 06:51:42,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-10-11 06:51:42,507 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:42,507 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:42,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-11 06:51:42,508 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:42,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:42,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1921688052, now seen corresponding path program 1 times [2024-10-11 06:51:42,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:42,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374015673] [2024-10-11 06:51:42,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:42,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:44,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:44,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374015673] [2024-10-11 06:51:44,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374015673] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:44,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:44,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:51:44,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383205031] [2024-10-11 06:51:44,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:44,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:44,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:44,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:44,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:44,323 INFO L87 Difference]: Start difference. First operand 1503 states and 2190 transitions. Second operand has 7 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:44,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:44,734 INFO L93 Difference]: Finished difference Result 3470 states and 5109 transitions. [2024-10-11 06:51:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 06:51:44,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 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 302 [2024-10-11 06:51:44,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:44,743 INFO L225 Difference]: With dead ends: 3470 [2024-10-11 06:51:44,743 INFO L226 Difference]: Without dead ends: 2430 [2024-10-11 06:51:44,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 06:51:44,746 INFO L432 NwaCegarLoop]: 710 mSDtfsCounter, 1341 mSDsluCounter, 2510 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:44,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1341 Valid, 3220 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 06:51:44,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2024-10-11 06:51:44,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 1525. [2024-10-11 06:51:44,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 1.4540682414698163) internal successors, (2216), 1524 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:44,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2216 transitions. [2024-10-11 06:51:44,781 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2216 transitions. Word has length 302 [2024-10-11 06:51:44,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:44,786 INFO L471 AbstractCegarLoop]: Abstraction has 1525 states and 2216 transitions. [2024-10-11 06:51:44,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:44,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2216 transitions. [2024-10-11 06:51:44,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-10-11 06:51:44,794 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:44,795 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:44,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-11 06:51:44,795 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:44,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:44,796 INFO L85 PathProgramCache]: Analyzing trace with hash 942994576, now seen corresponding path program 1 times [2024-10-11 06:51:44,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:44,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661688541] [2024-10-11 06:51:44,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:44,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-10-11 06:51:45,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:45,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661688541] [2024-10-11 06:51:45,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661688541] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:45,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:45,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:51:45,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960521216] [2024-10-11 06:51:45,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:45,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:51:45,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:45,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:51:45,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:51:45,557 INFO L87 Difference]: Start difference. First operand 1525 states and 2216 transitions. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:45,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:45,619 INFO L93 Difference]: Finished difference Result 2789 states and 4064 transitions. [2024-10-11 06:51:45,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:45,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 302 [2024-10-11 06:51:45,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:45,624 INFO L225 Difference]: With dead ends: 2789 [2024-10-11 06:51:45,624 INFO L226 Difference]: Without dead ends: 1320 [2024-10-11 06:51:45,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-11 06:51:45,627 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 989 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1273 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 [2024-10-11 06:51:45,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1273 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:51:45,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2024-10-11 06:51:45,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1318. [2024-10-11 06:51:45,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1317 states have (on average 1.457858769931663) internal successors, (1920), 1317 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1920 transitions. [2024-10-11 06:51:45,646 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1920 transitions. Word has length 302 [2024-10-11 06:51:45,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:45,647 INFO L471 AbstractCegarLoop]: Abstraction has 1318 states and 1920 transitions. [2024-10-11 06:51:45,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:45,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1920 transitions. [2024-10-11 06:51:45,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-10-11 06:51:45,651 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:45,652 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:45,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-11 06:51:45,652 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:45,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:45,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2118417134, now seen corresponding path program 1 times [2024-10-11 06:51:45,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:45,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772363341] [2024-10-11 06:51:45,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:45,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:48,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:48,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772363341] [2024-10-11 06:51:48,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772363341] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:48,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:48,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:48,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259330066] [2024-10-11 06:51:48,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:48,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:48,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:48,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:48,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:48,134 INFO L87 Difference]: Start difference. First operand 1318 states and 1920 transitions. Second operand has 7 states, 7 states have (on average 43.285714285714285) internal successors, (303), 6 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:48,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:48,463 INFO L93 Difference]: Finished difference Result 3285 states and 4835 transitions. [2024-10-11 06:51:48,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 06:51:48,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 43.285714285714285) internal successors, (303), 6 states have internal predecessors, (303), 0 states have call successors, (0), 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 303 [2024-10-11 06:51:48,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:48,472 INFO L225 Difference]: With dead ends: 3285 [2024-10-11 06:51:48,472 INFO L226 Difference]: Without dead ends: 2223 [2024-10-11 06:51:48,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 06:51:48,476 INFO L432 NwaCegarLoop]: 685 mSDtfsCounter, 1493 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:48,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 2819 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 06:51:48,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2024-10-11 06:51:48,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 1320. [2024-10-11 06:51:48,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.4556482183472328) internal successors, (1920), 1319 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:48,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1920 transitions. [2024-10-11 06:51:48,500 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1920 transitions. Word has length 303 [2024-10-11 06:51:48,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:48,501 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 1920 transitions. [2024-10-11 06:51:48,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 43.285714285714285) internal successors, (303), 6 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:48,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1920 transitions. [2024-10-11 06:51:48,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-10-11 06:51:48,504 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:48,504 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:48,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-11 06:51:48,504 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:48,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:48,505 INFO L85 PathProgramCache]: Analyzing trace with hash -676683952, now seen corresponding path program 1 times [2024-10-11 06:51:48,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:48,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333739431] [2024-10-11 06:51:48,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:48,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:51,261 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:51,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:51,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333739431] [2024-10-11 06:51:51,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333739431] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:51:51,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470045484] [2024-10-11 06:51:51,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:51,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:51,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:51:51,267 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:51:51,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 06:51:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:52,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 2005 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-11 06:51:52,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:51:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 120 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:53,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:51:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 06:51:53,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470045484] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 06:51:53,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 06:51:53,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 11] total 24 [2024-10-11 06:51:53,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019963378] [2024-10-11 06:51:53,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:53,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 06:51:53,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:53,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 06:51:53,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2024-10-11 06:51:53,368 INFO L87 Difference]: Start difference. First operand 1320 states and 1920 transitions. Second operand has 8 states, 8 states have (on average 37.25) internal successors, (298), 8 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:53,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:53,603 INFO L93 Difference]: Finished difference Result 4019 states and 5928 transitions. [2024-10-11 06:51:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 06:51:53,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 37.25) internal successors, (298), 8 states have internal predecessors, (298), 0 states have call successors, (0), 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 304 [2024-10-11 06:51:53,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:53,613 INFO L225 Difference]: With dead ends: 4019 [2024-10-11 06:51:53,614 INFO L226 Difference]: Without dead ends: 2955 [2024-10-11 06:51:53,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2024-10-11 06:51:53,617 INFO L432 NwaCegarLoop]: 730 mSDtfsCounter, 1358 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:53,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 3324 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:53,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2024-10-11 06:51:53,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1525. [2024-10-11 06:51:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 1.4573490813648293) internal successors, (2221), 1524 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2221 transitions. [2024-10-11 06:51:53,662 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2221 transitions. Word has length 304 [2024-10-11 06:51:53,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:53,663 INFO L471 AbstractCegarLoop]: Abstraction has 1525 states and 2221 transitions. [2024-10-11 06:51:53,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 37.25) internal successors, (298), 8 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2221 transitions. [2024-10-11 06:51:53,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-10-11 06:51:53,668 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:53,668 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:53,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 06:51:53,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:53,870 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:53,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:53,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1131151160, now seen corresponding path program 1 times [2024-10-11 06:51:53,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:53,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540745625] [2024-10-11 06:51:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:53,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:56,115 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:56,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:56,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540745625] [2024-10-11 06:51:56,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540745625] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:51:56,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421703992] [2024-10-11 06:51:56,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:56,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:56,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:51:56,118 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:51:56,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 06:51:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:56,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 2008 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-10-11 06:51:56,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:51:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 99 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:58,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:52:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 23 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:52:00,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421703992] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 06:52:00,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 06:52:00,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 18] total 35 [2024-10-11 06:52:00,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082472752] [2024-10-11 06:52:00,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 06:52:00,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-11 06:52:00,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:52:00,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-11 06:52:00,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190 [2024-10-11 06:52:00,472 INFO L87 Difference]: Start difference. First operand 1525 states and 2221 transitions. Second operand has 35 states, 35 states have (on average 23.314285714285713) internal successors, (816), 35 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)