./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7ff62df6f9603281bf0e236ab8865fc937b3dc90e8a1704cf1768013825b0923 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 21:38:06,038 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 21:38:06,108 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 21:38:06,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 21:38:06,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 21:38:06,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 21:38:06,142 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 21:38:06,143 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 21:38:06,143 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 21:38:06,144 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 21:38:06,144 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 21:38:06,144 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 21:38:06,145 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 21:38:06,146 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 21:38:06,147 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 21:38:06,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 21:38:06,148 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 21:38:06,148 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 21:38:06,148 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 21:38:06,148 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 21:38:06,148 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 21:38:06,149 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 21:38:06,152 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 21:38:06,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 21:38:06,153 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 21:38:06,153 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 21:38:06,153 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 21:38:06,154 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 21:38:06,154 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 21:38:06,154 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 21:38:06,154 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 21:38:06,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 21:38:06,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:38:06,155 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 21:38:06,155 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 21:38:06,155 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 21:38:06,155 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 21:38:06,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 21:38:06,155 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 21:38:06,156 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 21:38:06,156 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 21:38:06,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 21:38:06,157 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ff62df6f9603281bf0e236ab8865fc937b3dc90e8a1704cf1768013825b0923 [2024-11-18 21:38:06,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 21:38:06,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 21:38:06,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 21:38:06,375 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 21:38:06,375 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 21:38:06,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-3.i [2024-11-18 21:38:07,971 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 21:38:08,187 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 21:38:08,187 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-3.i [2024-11-18 21:38:08,201 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30e595ddf/61a13e4e03544833a8d64e5e4cf98707/FLAGb96bf3109 [2024-11-18 21:38:08,220 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30e595ddf/61a13e4e03544833a8d64e5e4cf98707 [2024-11-18 21:38:08,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 21:38:08,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 21:38:08,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 21:38:08,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 21:38:08,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 21:38:08,233 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:38:08" (1/1) ... [2024-11-18 21:38:08,234 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d3d122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:08, skipping insertion in model container [2024-11-18 21:38:08,234 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:38:08" (1/1) ... [2024-11-18 21:38:08,265 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 21:38:08,448 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-3.i[918,931] [2024-11-18 21:38:08,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:38:08,552 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 21:38:08,562 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-3.i[918,931] [2024-11-18 21:38:08,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:38:08,611 INFO L204 MainTranslator]: Completed translation [2024-11-18 21:38:08,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:08 WrapperNode [2024-11-18 21:38:08,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 21:38:08,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 21:38:08,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 21:38:08,617 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 21:38:08,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:08" (1/1) ... [2024-11-18 21:38:08,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:08" (1/1) ... [2024-11-18 21:38:08,697 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 274 [2024-11-18 21:38:08,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 21:38:08,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 21:38:08,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 21:38:08,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 21:38:08,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:08" (1/1) ... [2024-11-18 21:38:08,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:08" (1/1) ... [2024-11-18 21:38:08,715 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:08" (1/1) ... [2024-11-18 21:38:08,745 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 21:38:08,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:08" (1/1) ... [2024-11-18 21:38:08,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:08" (1/1) ... [2024-11-18 21:38:08,759 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:08" (1/1) ... [2024-11-18 21:38:08,767 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:08" (1/1) ... [2024-11-18 21:38:08,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:08" (1/1) ... [2024-11-18 21:38:08,775 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:08" (1/1) ... [2024-11-18 21:38:08,782 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 21:38:08,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 21:38:08,786 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 21:38:08,786 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 21:38:08,787 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:08" (1/1) ... [2024-11-18 21:38:08,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:38:08,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:38:08,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 21:38:08,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 21:38:08,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 21:38:08,869 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 21:38:08,869 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 21:38:08,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 21:38:08,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 21:38:08,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 21:38:08,942 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 21:38:08,944 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 21:38:09,523 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-18 21:38:09,523 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 21:38:09,539 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 21:38:09,541 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 21:38:09,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:38:09 BoogieIcfgContainer [2024-11-18 21:38:09,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 21:38:09,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 21:38:09,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 21:38:09,546 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 21:38:09,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:38:08" (1/3) ... [2024-11-18 21:38:09,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7e82e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:38:09, skipping insertion in model container [2024-11-18 21:38:09,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:08" (2/3) ... [2024-11-18 21:38:09,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7e82e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:38:09, skipping insertion in model container [2024-11-18 21:38:09,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:38:09" (3/3) ... [2024-11-18 21:38:09,549 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-3.i [2024-11-18 21:38:09,564 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 21:38:09,565 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 21:38:09,626 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 21:38:09,632 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;@720af697, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 21:38:09,632 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 21:38:09,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 87 states have internal predecessors, (130), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 21:38:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-18 21:38:09,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:09,654 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:09,654 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:09,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:09,659 INFO L85 PathProgramCache]: Analyzing trace with hash 866760761, now seen corresponding path program 1 times [2024-11-18 21:38:09,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:09,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741928291] [2024-11-18 21:38:09,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:09,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-18 21:38:09,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:09,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741928291] [2024-11-18 21:38:09,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741928291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:38:09,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753114870] [2024-11-18 21:38:09,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:09,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:38:09,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:38:09,974 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 21:38:09,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 21:38:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:10,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 21:38:10,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:38:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-18 21:38:10,221 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 21:38:10,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753114870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:10,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 21:38:10,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 21:38:10,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913360673] [2024-11-18 21:38:10,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:10,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 21:38:10,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:10,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 21:38:10,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 21:38:10,264 INFO L87 Difference]: Start difference. First operand has 123 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 87 states have internal predecessors, (130), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 21:38:10,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:10,302 INFO L93 Difference]: Finished difference Result 239 states and 424 transitions. [2024-11-18 21:38:10,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 21:38:10,305 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2024-11-18 21:38:10,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:10,313 INFO L225 Difference]: With dead ends: 239 [2024-11-18 21:38:10,314 INFO L226 Difference]: Without dead ends: 119 [2024-11-18 21:38:10,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 21:38:10,324 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:10,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:38:10,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-18 21:38:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-18 21:38:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 83 states have internal predecessors, (122), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 21:38:10,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 190 transitions. [2024-11-18 21:38:10,373 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 190 transitions. Word has length 221 [2024-11-18 21:38:10,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:10,374 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 190 transitions. [2024-11-18 21:38:10,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 21:38:10,377 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 190 transitions. [2024-11-18 21:38:10,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-18 21:38:10,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:10,382 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:10,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 21:38:10,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 21:38:10,584 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:10,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:10,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1738209153, now seen corresponding path program 1 times [2024-11-18 21:38:10,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:10,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097299558] [2024-11-18 21:38:10,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:10,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:38:10,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:10,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097299558] [2024-11-18 21:38:10,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097299558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:10,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:38:10,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:38:10,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94519242] [2024-11-18 21:38:10,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:10,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:38:10,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:10,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:38:10,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:38:10,995 INFO L87 Difference]: Start difference. First operand 119 states and 190 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:11,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:11,176 INFO L93 Difference]: Finished difference Result 352 states and 566 transitions. [2024-11-18 21:38:11,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:38:11,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 221 [2024-11-18 21:38:11,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:11,180 INFO L225 Difference]: With dead ends: 352 [2024-11-18 21:38:11,180 INFO L226 Difference]: Without dead ends: 236 [2024-11-18 21:38:11,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:38:11,182 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 127 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:11,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 475 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:38:11,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-18 21:38:11,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 233. [2024-11-18 21:38:11,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 162 states have (on average 1.4753086419753085) internal successors, (239), 162 states have internal predecessors, (239), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 21:38:11,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 375 transitions. [2024-11-18 21:38:11,231 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 375 transitions. Word has length 221 [2024-11-18 21:38:11,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:11,233 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 375 transitions. [2024-11-18 21:38:11,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:11,234 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 375 transitions. [2024-11-18 21:38:11,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 21:38:11,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:11,240 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:11,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 21:38:11,240 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:11,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:11,241 INFO L85 PathProgramCache]: Analyzing trace with hash -462074571, now seen corresponding path program 1 times [2024-11-18 21:38:11,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:11,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283177280] [2024-11-18 21:38:11,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:11,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:38:11,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:11,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283177280] [2024-11-18 21:38:11,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283177280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:11,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:38:11,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:38:11,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895407845] [2024-11-18 21:38:11,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:11,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:38:11,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:11,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:38:11,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:38:11,539 INFO L87 Difference]: Start difference. First operand 233 states and 375 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:11,684 INFO L93 Difference]: Finished difference Result 693 states and 1119 transitions. [2024-11-18 21:38:11,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:38:11,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 222 [2024-11-18 21:38:11,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:11,696 INFO L225 Difference]: With dead ends: 693 [2024-11-18 21:38:11,696 INFO L226 Difference]: Without dead ends: 463 [2024-11-18 21:38:11,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:38:11,702 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 108 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:11,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 345 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:38:11,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-18 21:38:11,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 461. [2024-11-18 21:38:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 320 states have (on average 1.45625) internal successors, (466), 320 states have internal predecessors, (466), 136 states have call successors, (136), 4 states have call predecessors, (136), 4 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2024-11-18 21:38:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 738 transitions. [2024-11-18 21:38:11,766 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 738 transitions. Word has length 222 [2024-11-18 21:38:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:11,768 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 738 transitions. [2024-11-18 21:38:11,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:11,768 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 738 transitions. [2024-11-18 21:38:11,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-18 21:38:11,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:11,772 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:11,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 21:38:11,772 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:11,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:11,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1069225673, now seen corresponding path program 1 times [2024-11-18 21:38:11,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:11,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691739843] [2024-11-18 21:38:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:11,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:38:11,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:11,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691739843] [2024-11-18 21:38:11,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691739843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:11,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:38:11,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:38:11,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668857421] [2024-11-18 21:38:11,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:11,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:38:11,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:11,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:38:11,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:38:11,905 INFO L87 Difference]: Start difference. First operand 461 states and 738 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:12,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:12,044 INFO L93 Difference]: Finished difference Result 1349 states and 2170 transitions. [2024-11-18 21:38:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:38:12,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 223 [2024-11-18 21:38:12,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:12,056 INFO L225 Difference]: With dead ends: 1349 [2024-11-18 21:38:12,056 INFO L226 Difference]: Without dead ends: 891 [2024-11-18 21:38:12,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:38:12,062 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 169 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:12,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 468 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:38:12,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-18 21:38:12,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 889. [2024-11-18 21:38:12,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 608 states have (on average 1.4375) internal successors, (874), 608 states have internal predecessors, (874), 272 states have call successors, (272), 8 states have call predecessors, (272), 8 states have return successors, (272), 272 states have call predecessors, (272), 272 states have call successors, (272) [2024-11-18 21:38:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1418 transitions. [2024-11-18 21:38:12,239 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1418 transitions. Word has length 223 [2024-11-18 21:38:12,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:12,240 INFO L471 AbstractCegarLoop]: Abstraction has 889 states and 1418 transitions. [2024-11-18 21:38:12,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:12,266 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1418 transitions. [2024-11-18 21:38:12,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-18 21:38:12,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:12,269 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:12,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 21:38:12,271 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:12,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:12,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2104504687, now seen corresponding path program 1 times [2024-11-18 21:38:12,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:12,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157946100] [2024-11-18 21:38:12,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:12,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:38:12,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:12,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157946100] [2024-11-18 21:38:12,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157946100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:12,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:38:12,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:38:12,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518304310] [2024-11-18 21:38:12,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:12,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:38:12,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:12,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:38:12,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:38:12,371 INFO L87 Difference]: Start difference. First operand 889 states and 1418 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:12,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:12,436 INFO L93 Difference]: Finished difference Result 2009 states and 3178 transitions. [2024-11-18 21:38:12,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:38:12,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 223 [2024-11-18 21:38:12,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:12,443 INFO L225 Difference]: With dead ends: 2009 [2024-11-18 21:38:12,444 INFO L226 Difference]: Without dead ends: 1123 [2024-11-18 21:38:12,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:38:12,448 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 43 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:12,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 392 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:38:12,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2024-11-18 21:38:12,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 961. [2024-11-18 21:38:12,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 680 states have (on average 1.438235294117647) internal successors, (978), 680 states have internal predecessors, (978), 272 states have call successors, (272), 8 states have call predecessors, (272), 8 states have return successors, (272), 272 states have call predecessors, (272), 272 states have call successors, (272) [2024-11-18 21:38:12,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1522 transitions. [2024-11-18 21:38:12,519 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1522 transitions. Word has length 223 [2024-11-18 21:38:12,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:12,519 INFO L471 AbstractCegarLoop]: Abstraction has 961 states and 1522 transitions. [2024-11-18 21:38:12,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:12,520 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1522 transitions. [2024-11-18 21:38:12,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-18 21:38:12,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:12,522 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:12,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 21:38:12,523 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:12,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:12,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1873190809, now seen corresponding path program 1 times [2024-11-18 21:38:12,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:12,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284587802] [2024-11-18 21:38:12,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:12,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:12,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:38:12,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:12,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284587802] [2024-11-18 21:38:12,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284587802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:12,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:38:12,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:38:12,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405913437] [2024-11-18 21:38:12,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:12,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:38:12,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:12,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:38:12,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:38:12,797 INFO L87 Difference]: Start difference. First operand 961 states and 1522 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:13,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:13,163 INFO L93 Difference]: Finished difference Result 3503 states and 5573 transitions. [2024-11-18 21:38:13,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:38:13,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 224 [2024-11-18 21:38:13,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:13,179 INFO L225 Difference]: With dead ends: 3503 [2024-11-18 21:38:13,179 INFO L226 Difference]: Without dead ends: 2455 [2024-11-18 21:38:13,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:38:13,185 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 387 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:13,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 522 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 21:38:13,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2024-11-18 21:38:13,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2451. [2024-11-18 21:38:13,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 1750 states have (on average 1.44) internal successors, (2520), 1750 states have internal predecessors, (2520), 680 states have call successors, (680), 20 states have call predecessors, (680), 20 states have return successors, (680), 680 states have call predecessors, (680), 680 states have call successors, (680) [2024-11-18 21:38:13,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 3880 transitions. [2024-11-18 21:38:13,399 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 3880 transitions. Word has length 224 [2024-11-18 21:38:13,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:13,400 INFO L471 AbstractCegarLoop]: Abstraction has 2451 states and 3880 transitions. [2024-11-18 21:38:13,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:13,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 3880 transitions. [2024-11-18 21:38:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-18 21:38:13,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:13,404 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:13,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 21:38:13,405 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:13,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:13,405 INFO L85 PathProgramCache]: Analyzing trace with hash -126127931, now seen corresponding path program 1 times [2024-11-18 21:38:13,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:13,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199092828] [2024-11-18 21:38:13,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:13,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:13,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:38:13,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:13,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199092828] [2024-11-18 21:38:13,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199092828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:13,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:38:13,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:38:13,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764977475] [2024-11-18 21:38:13,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:13,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:38:13,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:13,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:38:13,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:38:13,612 INFO L87 Difference]: Start difference. First operand 2451 states and 3880 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:13,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:13,936 INFO L93 Difference]: Finished difference Result 5841 states and 9260 transitions. [2024-11-18 21:38:13,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:38:13,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 224 [2024-11-18 21:38:13,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:13,961 INFO L225 Difference]: With dead ends: 5841 [2024-11-18 21:38:13,961 INFO L226 Difference]: Without dead ends: 4349 [2024-11-18 21:38:13,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:38:13,967 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 129 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:13,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 365 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:38:13,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4349 states. [2024-11-18 21:38:14,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4349 to 4347. [2024-11-18 21:38:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3086 states have (on average 1.4322747893713546) internal successors, (4420), 3086 states have internal predecessors, (4420), 1224 states have call successors, (1224), 36 states have call predecessors, (1224), 36 states have return successors, (1224), 1224 states have call predecessors, (1224), 1224 states have call successors, (1224) [2024-11-18 21:38:14,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 6868 transitions. [2024-11-18 21:38:14,256 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 6868 transitions. Word has length 224 [2024-11-18 21:38:14,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:14,257 INFO L471 AbstractCegarLoop]: Abstraction has 4347 states and 6868 transitions. [2024-11-18 21:38:14,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:14,257 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 6868 transitions. [2024-11-18 21:38:14,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-18 21:38:14,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:14,261 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:14,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 21:38:14,261 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:14,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:14,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2088030736, now seen corresponding path program 1 times [2024-11-18 21:38:14,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:14,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440821345] [2024-11-18 21:38:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:14,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:38:14,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:14,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440821345] [2024-11-18 21:38:14,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440821345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:14,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:38:14,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:38:14,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143075244] [2024-11-18 21:38:14,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:14,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:38:14,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:14,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:38:14,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:38:14,471 INFO L87 Difference]: Start difference. First operand 4347 states and 6868 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:15,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:15,003 INFO L93 Difference]: Finished difference Result 13035 states and 20598 transitions. [2024-11-18 21:38:15,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:38:15,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 225 [2024-11-18 21:38:15,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:15,057 INFO L225 Difference]: With dead ends: 13035 [2024-11-18 21:38:15,058 INFO L226 Difference]: Without dead ends: 8691 [2024-11-18 21:38:15,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:38:15,075 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 128 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:15,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 349 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:38:15,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8691 states. [2024-11-18 21:38:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8691 to 8653. [2024-11-18 21:38:15,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8653 states, 6132 states have (on average 1.4292237442922375) internal successors, (8764), 6132 states have internal predecessors, (8764), 2448 states have call successors, (2448), 72 states have call predecessors, (2448), 72 states have return successors, (2448), 2448 states have call predecessors, (2448), 2448 states have call successors, (2448) [2024-11-18 21:38:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8653 states to 8653 states and 13660 transitions. [2024-11-18 21:38:15,902 INFO L78 Accepts]: Start accepts. Automaton has 8653 states and 13660 transitions. Word has length 225 [2024-11-18 21:38:15,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:15,903 INFO L471 AbstractCegarLoop]: Abstraction has 8653 states and 13660 transitions. [2024-11-18 21:38:15,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:15,904 INFO L276 IsEmpty]: Start isEmpty. Operand 8653 states and 13660 transitions. [2024-11-18 21:38:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-18 21:38:15,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:15,907 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:15,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 21:38:15,907 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:15,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:15,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1161305858, now seen corresponding path program 1 times [2024-11-18 21:38:15,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:15,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935410430] [2024-11-18 21:38:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:15,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:38:16,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:16,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935410430] [2024-11-18 21:38:16,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935410430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:16,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:38:16,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:38:16,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501882223] [2024-11-18 21:38:16,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:16,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:38:16,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:16,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:38:16,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:38:16,102 INFO L87 Difference]: Start difference. First operand 8653 states and 13660 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:16,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:16,771 INFO L93 Difference]: Finished difference Result 21725 states and 34354 transitions. [2024-11-18 21:38:16,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:38:16,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 226 [2024-11-18 21:38:16,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:16,868 INFO L225 Difference]: With dead ends: 21725 [2024-11-18 21:38:16,869 INFO L226 Difference]: Without dead ends: 13075 [2024-11-18 21:38:16,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:38:16,905 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 122 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:16,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 366 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:38:16,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13075 states. [2024-11-18 21:38:17,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13075 to 13073. [2024-11-18 21:38:17,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13073 states, 9292 states have (on average 1.4222987516142918) internal successors, (13216), 9292 states have internal predecessors, (13216), 3672 states have call successors, (3672), 108 states have call predecessors, (3672), 108 states have return successors, (3672), 3672 states have call predecessors, (3672), 3672 states have call successors, (3672) [2024-11-18 21:38:18,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13073 states to 13073 states and 20560 transitions. [2024-11-18 21:38:18,047 INFO L78 Accepts]: Start accepts. Automaton has 13073 states and 20560 transitions. Word has length 226 [2024-11-18 21:38:18,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:18,049 INFO L471 AbstractCegarLoop]: Abstraction has 13073 states and 20560 transitions. [2024-11-18 21:38:18,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand 13073 states and 20560 transitions. [2024-11-18 21:38:18,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-18 21:38:18,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:18,053 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:18,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 21:38:18,054 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:18,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:18,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1940614845, now seen corresponding path program 1 times [2024-11-18 21:38:18,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:18,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452121463] [2024-11-18 21:38:18,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:18,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:38:18,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:18,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452121463] [2024-11-18 21:38:18,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452121463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:18,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:38:18,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:38:18,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451008948] [2024-11-18 21:38:18,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:18,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:38:18,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:18,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:38:18,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:38:18,195 INFO L87 Difference]: Start difference. First operand 13073 states and 20560 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:19,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:19,174 INFO L93 Difference]: Finished difference Result 26199 states and 41226 transitions. [2024-11-18 21:38:19,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:38:19,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 227 [2024-11-18 21:38:19,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:19,239 INFO L225 Difference]: With dead ends: 26199 [2024-11-18 21:38:19,240 INFO L226 Difference]: Without dead ends: 13129 [2024-11-18 21:38:19,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:38:19,286 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 122 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:19,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 476 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 21:38:19,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13129 states. [2024-11-18 21:38:19,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13129 to 13073. [2024-11-18 21:38:20,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13073 states, 9292 states have (on average 1.4179939733103746) internal successors, (13176), 9292 states have internal predecessors, (13176), 3672 states have call successors, (3672), 108 states have call predecessors, (3672), 108 states have return successors, (3672), 3672 states have call predecessors, (3672), 3672 states have call successors, (3672) [2024-11-18 21:38:20,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13073 states to 13073 states and 20520 transitions. [2024-11-18 21:38:20,089 INFO L78 Accepts]: Start accepts. Automaton has 13073 states and 20520 transitions. Word has length 227 [2024-11-18 21:38:20,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:20,090 INFO L471 AbstractCegarLoop]: Abstraction has 13073 states and 20520 transitions. [2024-11-18 21:38:20,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:20,090 INFO L276 IsEmpty]: Start isEmpty. Operand 13073 states and 20520 transitions. [2024-11-18 21:38:20,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-18 21:38:20,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:20,095 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:20,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 21:38:20,095 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:20,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:20,096 INFO L85 PathProgramCache]: Analyzing trace with hash 806818497, now seen corresponding path program 1 times [2024-11-18 21:38:20,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:20,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593691928] [2024-11-18 21:38:20,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:20,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:38:20,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:20,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593691928] [2024-11-18 21:38:20,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593691928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:20,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:38:20,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 21:38:20,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026081980] [2024-11-18 21:38:20,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:20,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 21:38:20,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:20,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 21:38:20,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:38:20,440 INFO L87 Difference]: Start difference. First operand 13073 states and 20520 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:22,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:22,837 INFO L93 Difference]: Finished difference Result 42409 states and 66671 transitions. [2024-11-18 21:38:22,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 21:38:22,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 228 [2024-11-18 21:38:22,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:22,955 INFO L225 Difference]: With dead ends: 42409 [2024-11-18 21:38:22,956 INFO L226 Difference]: Without dead ends: 29339 [2024-11-18 21:38:22,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-18 21:38:22,988 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 533 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:22,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 704 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 21:38:23,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29339 states. [2024-11-18 21:38:24,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29339 to 16889. [2024-11-18 21:38:24,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16889 states, 12322 states have (on average 1.4340204512254504) internal successors, (17670), 12380 states have internal predecessors, (17670), 4414 states have call successors, (4414), 152 states have call predecessors, (4414), 152 states have return successors, (4414), 4356 states have call predecessors, (4414), 4414 states have call successors, (4414) [2024-11-18 21:38:24,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16889 states to 16889 states and 26498 transitions. [2024-11-18 21:38:24,273 INFO L78 Accepts]: Start accepts. Automaton has 16889 states and 26498 transitions. Word has length 228 [2024-11-18 21:38:24,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:24,274 INFO L471 AbstractCegarLoop]: Abstraction has 16889 states and 26498 transitions. [2024-11-18 21:38:24,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:24,275 INFO L276 IsEmpty]: Start isEmpty. Operand 16889 states and 26498 transitions. [2024-11-18 21:38:24,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-18 21:38:24,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:24,277 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:24,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 21:38:24,278 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:24,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:24,279 INFO L85 PathProgramCache]: Analyzing trace with hash 947367107, now seen corresponding path program 1 times [2024-11-18 21:38:24,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:24,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204042879] [2024-11-18 21:38:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:24,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:24,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:38:24,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:24,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204042879] [2024-11-18 21:38:24,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204042879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:24,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:38:24,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:38:24,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521069494] [2024-11-18 21:38:24,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:24,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:38:24,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:24,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:38:24,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:38:24,509 INFO L87 Difference]: Start difference. First operand 16889 states and 26498 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:25,826 INFO L93 Difference]: Finished difference Result 33675 states and 52893 transitions. [2024-11-18 21:38:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:38:25,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 228 [2024-11-18 21:38:25,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:25,920 INFO L225 Difference]: With dead ends: 33675 [2024-11-18 21:38:25,921 INFO L226 Difference]: Without dead ends: 16789 [2024-11-18 21:38:25,960 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 [2024-11-18 21:38:25,960 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 0 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:25,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 553 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:38:25,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16789 states. [2024-11-18 21:38:26,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16789 to 16789. [2024-11-18 21:38:26,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16789 states, 12222 states have (on average 1.4212076583210604) internal successors, (17370), 12280 states have internal predecessors, (17370), 4414 states have call successors, (4414), 152 states have call predecessors, (4414), 152 states have return successors, (4414), 4356 states have call predecessors, (4414), 4414 states have call successors, (4414) [2024-11-18 21:38:26,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16789 states to 16789 states and 26198 transitions. [2024-11-18 21:38:26,958 INFO L78 Accepts]: Start accepts. Automaton has 16789 states and 26198 transitions. Word has length 228 [2024-11-18 21:38:26,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:26,959 INFO L471 AbstractCegarLoop]: Abstraction has 16789 states and 26198 transitions. [2024-11-18 21:38:26,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 16789 states and 26198 transitions. [2024-11-18 21:38:26,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-18 21:38:26,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:26,962 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:26,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 21:38:26,962 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:26,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:26,962 INFO L85 PathProgramCache]: Analyzing trace with hash 728512389, now seen corresponding path program 1 times [2024-11-18 21:38:26,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:26,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971126539] [2024-11-18 21:38:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:26,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:38:27,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:27,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971126539] [2024-11-18 21:38:27,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971126539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:27,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:38:27,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:38:27,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419743364] [2024-11-18 21:38:27,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:27,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:38:27,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:27,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:38:27,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:38:27,133 INFO L87 Difference]: Start difference. First operand 16789 states and 26198 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:28,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:28,634 INFO L93 Difference]: Finished difference Result 38991 states and 60798 transitions. [2024-11-18 21:38:28,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:38:28,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 228 [2024-11-18 21:38:28,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:28,732 INFO L225 Difference]: With dead ends: 38991 [2024-11-18 21:38:28,732 INFO L226 Difference]: Without dead ends: 22205 [2024-11-18 21:38:28,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:38:28,767 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 124 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:28,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 352 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:38:28,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22205 states. [2024-11-18 21:38:30,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22205 to 22155. [2024-11-18 21:38:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22155 states, 16106 states have (on average 1.4181050540171365) internal successors, (22840), 16190 states have internal predecessors, (22840), 5844 states have call successors, (5844), 204 states have call predecessors, (5844), 204 states have return successors, (5844), 5760 states have call predecessors, (5844), 5844 states have call successors, (5844) [2024-11-18 21:38:30,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22155 states to 22155 states and 34528 transitions. [2024-11-18 21:38:30,390 INFO L78 Accepts]: Start accepts. Automaton has 22155 states and 34528 transitions. Word has length 228 [2024-11-18 21:38:30,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:30,397 INFO L471 AbstractCegarLoop]: Abstraction has 22155 states and 34528 transitions. [2024-11-18 21:38:30,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:30,398 INFO L276 IsEmpty]: Start isEmpty. Operand 22155 states and 34528 transitions. [2024-11-18 21:38:30,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-18 21:38:30,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:30,409 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:30,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 21:38:30,409 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:30,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:30,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1791974010, now seen corresponding path program 1 times [2024-11-18 21:38:30,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:30,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555558819] [2024-11-18 21:38:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:30,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:30,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-18 21:38:30,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:30,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555558819] [2024-11-18 21:38:30,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555558819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:38:30,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722321835] [2024-11-18 21:38:30,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:30,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:38:30,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:38:30,688 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 21:38:30,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 21:38:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:30,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 21:38:30,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:38:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1083 proven. 36 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2024-11-18 21:38:31,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 21:38:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-18 21:38:31,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722321835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 21:38:31,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 21:38:31,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-18 21:38:31,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742410578] [2024-11-18 21:38:31,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 21:38:31,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 21:38:31,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:31,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 21:38:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-18 21:38:31,308 INFO L87 Difference]: Start difference. First operand 22155 states and 34528 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 3 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2024-11-18 21:38:33,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:33,214 INFO L93 Difference]: Finished difference Result 42151 states and 64671 transitions. [2024-11-18 21:38:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 21:38:33,214 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 3 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 229 [2024-11-18 21:38:33,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:33,312 INFO L225 Difference]: With dead ends: 42151 [2024-11-18 21:38:33,313 INFO L226 Difference]: Without dead ends: 19999 [2024-11-18 21:38:33,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2024-11-18 21:38:33,355 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 703 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:33,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 552 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 21:38:33,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19999 states. [2024-11-18 21:38:34,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19999 to 17441. [2024-11-18 21:38:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17441 states, 12616 states have (on average 1.3937064045656309) internal successors, (17583), 12636 states have internal predecessors, (17583), 4500 states have call successors, (4500), 324 states have call predecessors, (4500), 324 states have return successors, (4500), 4480 states have call predecessors, (4500), 4500 states have call successors, (4500) [2024-11-18 21:38:34,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17441 states to 17441 states and 26583 transitions. [2024-11-18 21:38:34,926 INFO L78 Accepts]: Start accepts. Automaton has 17441 states and 26583 transitions. Word has length 229 [2024-11-18 21:38:34,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:34,927 INFO L471 AbstractCegarLoop]: Abstraction has 17441 states and 26583 transitions. [2024-11-18 21:38:34,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 3 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2024-11-18 21:38:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 17441 states and 26583 transitions. [2024-11-18 21:38:34,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-18 21:38:34,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:34,930 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:34,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 21:38:35,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 21:38:35,132 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:35,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:35,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1208436979, now seen corresponding path program 1 times [2024-11-18 21:38:35,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:35,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087438485] [2024-11-18 21:38:35,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:35,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:38:35,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:35,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087438485] [2024-11-18 21:38:35,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087438485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:35,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:38:35,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 21:38:35,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692039158] [2024-11-18 21:38:35,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:35,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 21:38:35,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:35,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 21:38:35,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:38:35,454 INFO L87 Difference]: Start difference. First operand 17441 states and 26583 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:36,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:36,914 INFO L93 Difference]: Finished difference Result 36001 states and 54878 transitions. [2024-11-18 21:38:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 21:38:36,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 230 [2024-11-18 21:38:36,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:36,985 INFO L225 Difference]: With dead ends: 36001 [2024-11-18 21:38:36,986 INFO L226 Difference]: Without dead ends: 18563 [2024-11-18 21:38:37,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-18 21:38:37,016 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 316 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:37,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 572 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 21:38:37,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18563 states. [2024-11-18 21:38:38,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18563 to 18449. [2024-11-18 21:38:38,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18449 states, 13228 states have (on average 1.3831267009374055) internal successors, (18296), 13266 states have internal predecessors, (18296), 4878 states have call successors, (4878), 342 states have call predecessors, (4878), 342 states have return successors, (4878), 4840 states have call predecessors, (4878), 4878 states have call successors, (4878) [2024-11-18 21:38:38,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18449 states to 18449 states and 28052 transitions. [2024-11-18 21:38:38,131 INFO L78 Accepts]: Start accepts. Automaton has 18449 states and 28052 transitions. Word has length 230 [2024-11-18 21:38:38,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:38,132 INFO L471 AbstractCegarLoop]: Abstraction has 18449 states and 28052 transitions. [2024-11-18 21:38:38,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:38,132 INFO L276 IsEmpty]: Start isEmpty. Operand 18449 states and 28052 transitions. [2024-11-18 21:38:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-18 21:38:38,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:38,135 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:38,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 21:38:38,136 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:38,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:38,136 INFO L85 PathProgramCache]: Analyzing trace with hash 831297582, now seen corresponding path program 1 times [2024-11-18 21:38:38,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:38,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786032778] [2024-11-18 21:38:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:38,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:38:38,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:38,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786032778] [2024-11-18 21:38:38,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786032778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:38,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:38:38,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 21:38:38,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834385041] [2024-11-18 21:38:38,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:38,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 21:38:38,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:38,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 21:38:38,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:38:38,583 INFO L87 Difference]: Start difference. First operand 18449 states and 28052 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:41,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:41,983 INFO L93 Difference]: Finished difference Result 55771 states and 84673 transitions. [2024-11-18 21:38:41,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 21:38:41,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 231 [2024-11-18 21:38:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:42,128 INFO L225 Difference]: With dead ends: 55771 [2024-11-18 21:38:42,128 INFO L226 Difference]: Without dead ends: 37325 [2024-11-18 21:38:42,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:38:42,176 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 613 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:42,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 559 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 21:38:42,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37325 states. [2024-11-18 21:38:44,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37325 to 28262. [2024-11-18 21:38:44,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28262 states, 20443 states have (on average 1.384483686347405) internal successors, (28303), 20523 states have internal predecessors, (28303), 7324 states have call successors, (7324), 494 states have call predecessors, (7324), 494 states have return successors, (7324), 7244 states have call predecessors, (7324), 7324 states have call successors, (7324) [2024-11-18 21:38:44,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28262 states to 28262 states and 42951 transitions. [2024-11-18 21:38:45,015 INFO L78 Accepts]: Start accepts. Automaton has 28262 states and 42951 transitions. Word has length 231 [2024-11-18 21:38:45,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:45,020 INFO L471 AbstractCegarLoop]: Abstraction has 28262 states and 42951 transitions. [2024-11-18 21:38:45,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:45,020 INFO L276 IsEmpty]: Start isEmpty. Operand 28262 states and 42951 transitions. [2024-11-18 21:38:45,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-18 21:38:45,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:45,027 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:45,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 21:38:45,027 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:45,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:45,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1934560563, now seen corresponding path program 1 times [2024-11-18 21:38:45,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:45,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057345084] [2024-11-18 21:38:45,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:45,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:38:45,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:45,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057345084] [2024-11-18 21:38:45,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057345084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:45,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:38:45,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:38:45,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542423884] [2024-11-18 21:38:45,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:45,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:38:45,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:45,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:38:45,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:38:45,252 INFO L87 Difference]: Start difference. First operand 28262 states and 42951 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:47,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:47,149 INFO L93 Difference]: Finished difference Result 56565 states and 85984 transitions. [2024-11-18 21:38:47,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:38:47,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 231 [2024-11-18 21:38:47,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:47,287 INFO L225 Difference]: With dead ends: 56565 [2024-11-18 21:38:47,287 INFO L226 Difference]: Without dead ends: 28306 [2024-11-18 21:38:47,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:38:47,344 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 110 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:47,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 471 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 21:38:47,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28306 states. [2024-11-18 21:38:49,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28306 to 28281. [2024-11-18 21:38:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28281 states, 20462 states have (on average 1.384126673834425) internal successors, (28322), 20542 states have internal predecessors, (28322), 7324 states have call successors, (7324), 494 states have call predecessors, (7324), 494 states have return successors, (7324), 7244 states have call predecessors, (7324), 7324 states have call successors, (7324) [2024-11-18 21:38:49,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28281 states to 28281 states and 42970 transitions. [2024-11-18 21:38:49,506 INFO L78 Accepts]: Start accepts. Automaton has 28281 states and 42970 transitions. Word has length 231 [2024-11-18 21:38:49,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:49,507 INFO L471 AbstractCegarLoop]: Abstraction has 28281 states and 42970 transitions. [2024-11-18 21:38:49,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:38:49,507 INFO L276 IsEmpty]: Start isEmpty. Operand 28281 states and 42970 transitions. [2024-11-18 21:38:49,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-18 21:38:49,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:49,509 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:49,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 21:38:49,509 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:49,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:49,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1715705845, now seen corresponding path program 1 times [2024-11-18 21:38:49,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:49,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610749760] [2024-11-18 21:38:49,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:49,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 42 proven. 57 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-18 21:38:50,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:50,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610749760] [2024-11-18 21:38:50,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610749760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:38:50,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390675050] [2024-11-18 21:38:50,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:50,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:38:50,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:38:50,786 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 21:38:50,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 21:38:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:50,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 21:38:50,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:38:51,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1178 proven. 282 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2024-11-18 21:38:51,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 21:38:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 87 proven. 201 refuted. 0 times theorem prover too weak. 1956 trivial. 0 not checked. [2024-11-18 21:38:53,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390675050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 21:38:53,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 21:38:53,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 12] total 25 [2024-11-18 21:38:53,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659574877] [2024-11-18 21:38:53,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 21:38:53,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 21:38:53,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:53,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 21:38:53,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2024-11-18 21:38:53,225 INFO L87 Difference]: Start difference. First operand 28281 states and 42970 transitions. Second operand has 25 states, 25 states have (on average 7.16) internal successors, (179), 25 states have internal predecessors, (179), 8 states have call successors, (88), 4 states have call predecessors, (88), 10 states have return successors, (91), 8 states have call predecessors, (91), 8 states have call successors, (91) [2024-11-18 21:38:56,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:38:56,655 INFO L93 Difference]: Finished difference Result 46653 states and 68497 transitions. [2024-11-18 21:38:56,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 21:38:56,656 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.16) internal successors, (179), 25 states have internal predecessors, (179), 8 states have call successors, (88), 4 states have call predecessors, (88), 10 states have return successors, (91), 8 states have call predecessors, (91), 8 states have call successors, (91) Word has length 231 [2024-11-18 21:38:56,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:38:56,756 INFO L225 Difference]: With dead ends: 46653 [2024-11-18 21:38:56,756 INFO L226 Difference]: Without dead ends: 24032 [2024-11-18 21:38:56,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=655, Invalid=1601, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 21:38:56,801 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 774 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 21:38:56,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 662 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 21:38:56,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24032 states. [2024-11-18 21:38:58,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24032 to 22632. [2024-11-18 21:38:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22632 states, 16910 states have (on average 1.3396806623299822) internal successors, (22654), 17036 states have internal predecessors, (22654), 4766 states have call successors, (4766), 955 states have call predecessors, (4766), 955 states have return successors, (4766), 4640 states have call predecessors, (4766), 4766 states have call successors, (4766) [2024-11-18 21:38:58,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22632 states to 22632 states and 32186 transitions. [2024-11-18 21:38:58,975 INFO L78 Accepts]: Start accepts. Automaton has 22632 states and 32186 transitions. Word has length 231 [2024-11-18 21:38:58,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:38:58,976 INFO L471 AbstractCegarLoop]: Abstraction has 22632 states and 32186 transitions. [2024-11-18 21:38:58,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.16) internal successors, (179), 25 states have internal predecessors, (179), 8 states have call successors, (88), 4 states have call predecessors, (88), 10 states have return successors, (91), 8 states have call predecessors, (91), 8 states have call successors, (91) [2024-11-18 21:38:58,976 INFO L276 IsEmpty]: Start isEmpty. Operand 22632 states and 32186 transitions. [2024-11-18 21:38:58,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-18 21:38:58,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:38:58,978 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 21:38:58,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 21:38:59,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 21:38:59,182 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:38:59,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:38:59,182 INFO L85 PathProgramCache]: Analyzing trace with hash -283612895, now seen corresponding path program 1 times [2024-11-18 21:38:59,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:38:59,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334727482] [2024-11-18 21:38:59,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:38:59,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:38:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:38:59,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:38:59,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:38:59,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334727482] [2024-11-18 21:38:59,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334727482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:38:59,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:38:59,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 21:38:59,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126750359] [2024-11-18 21:38:59,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:38:59,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 21:38:59,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:38:59,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 21:38:59,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:38:59,581 INFO L87 Difference]: Start difference. First operand 22632 states and 32186 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 21:39:02,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:39:02,622 INFO L93 Difference]: Finished difference Result 41638 states and 59348 transitions. [2024-11-18 21:39:02,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 21:39:02,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 231 [2024-11-18 21:39:02,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:39:02,714 INFO L225 Difference]: With dead ends: 41638 [2024-11-18 21:39:02,715 INFO L226 Difference]: Without dead ends: 30892 [2024-11-18 21:39:02,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-18 21:39:02,737 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 475 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 21:39:02,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 710 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 21:39:02,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30892 states.