./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label25.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label25.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a498dbc067f1de398639e507498752ad05d79db17a274a9c2dbfecc9e6d20a0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 23:18:16,631 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 23:18:16,705 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 23:18:16,709 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 23:18:16,710 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 23:18:16,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 23:18:16,732 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 23:18:16,732 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 23:18:16,733 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 23:18:16,733 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 23:18:16,734 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 23:18:16,734 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 23:18:16,734 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 23:18:16,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 23:18:16,736 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 23:18:16,736 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 23:18:16,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 23:18:16,737 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 23:18:16,737 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 23:18:16,737 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 23:18:16,737 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 23:18:16,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 23:18:16,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 23:18:16,741 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 23:18:16,741 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 23:18:16,741 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 23:18:16,741 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 23:18:16,741 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 23:18:16,741 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 23:18:16,742 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 23:18:16,742 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 23:18:16,742 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 23:18:16,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:18:16,742 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 23:18:16,742 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 23:18:16,742 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 23:18:16,742 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 23:18:16,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 23:18:16,743 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 23:18:16,743 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 23:18:16,743 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 23:18:16,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 23:18:16,743 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a498dbc067f1de398639e507498752ad05d79db17a274a9c2dbfecc9e6d20a0 [2024-10-10 23:18:16,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 23:18:16,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 23:18:16,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 23:18:16,964 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 23:18:16,964 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 23:18:16,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label25.c [2024-10-10 23:18:18,161 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 23:18:18,412 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 23:18:18,413 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label25.c [2024-10-10 23:18:18,425 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/fef61b37b/2fdea5c294a6493494d904faa0c029b1/FLAG4c0c4c2d6 [2024-10-10 23:18:18,435 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/fef61b37b/2fdea5c294a6493494d904faa0c029b1 [2024-10-10 23:18:18,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 23:18:18,438 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 23:18:18,439 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 23:18:18,439 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 23:18:18,444 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 23:18:18,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:18:18" (1/1) ... [2024-10-10 23:18:18,446 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a642828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:18, skipping insertion in model container [2024-10-10 23:18:18,446 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:18:18" (1/1) ... [2024-10-10 23:18:18,486 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 23:18:18,654 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label25.c[4556,4569] [2024-10-10 23:18:18,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:18:18,862 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 23:18:18,884 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label25.c[4556,4569] [2024-10-10 23:18:18,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:18:18,984 INFO L204 MainTranslator]: Completed translation [2024-10-10 23:18:18,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:18 WrapperNode [2024-10-10 23:18:18,985 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 23:18:18,985 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 23:18:18,986 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 23:18:18,986 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 23:18:18,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:18" (1/1) ... [2024-10-10 23:18:19,015 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:18" (1/1) ... [2024-10-10 23:18:19,093 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-10-10 23:18:19,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 23:18:19,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 23:18:19,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 23:18:19,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 23:18:19,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:18" (1/1) ... [2024-10-10 23:18:19,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:18" (1/1) ... [2024-10-10 23:18:19,111 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:18" (1/1) ... [2024-10-10 23:18:19,181 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-10 23:18:19,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:18" (1/1) ... [2024-10-10 23:18:19,182 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:18" (1/1) ... [2024-10-10 23:18:19,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:18" (1/1) ... [2024-10-10 23:18:19,223 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:18" (1/1) ... [2024-10-10 23:18:19,231 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:18" (1/1) ... [2024-10-10 23:18:19,242 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:18" (1/1) ... [2024-10-10 23:18:19,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 23:18:19,251 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 23:18:19,251 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 23:18:19,251 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 23:18:19,252 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:18" (1/1) ... [2024-10-10 23:18:19,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:18:19,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:19,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 23:18:19,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 23:18:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 23:18:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 23:18:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 23:18:19,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 23:18:19,377 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 23:18:19,378 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 23:18:20,464 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-10-10 23:18:20,465 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 23:18:20,514 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 23:18:20,514 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-10 23:18:20,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:18:20 BoogieIcfgContainer [2024-10-10 23:18:20,516 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 23:18:20,518 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 23:18:20,518 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 23:18:20,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 23:18:20,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:18:18" (1/3) ... [2024-10-10 23:18:20,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fdd83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:18:20, skipping insertion in model container [2024-10-10 23:18:20,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:18:18" (2/3) ... [2024-10-10 23:18:20,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fdd83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:18:20, skipping insertion in model container [2024-10-10 23:18:20,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:18:20" (3/3) ... [2024-10-10 23:18:20,525 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label25.c [2024-10-10 23:18:20,538 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 23:18:20,538 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 23:18:20,599 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 23:18:20,605 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;@18d6b938, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 23:18:20,605 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 23:18:20,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:20,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-10 23:18:20,617 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:20,618 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:20,619 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:20,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:20,623 INFO L85 PathProgramCache]: Analyzing trace with hash 936061325, now seen corresponding path program 1 times [2024-10-10 23:18:20,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:20,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705278025] [2024-10-10 23:18:20,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:20,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:20,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:20,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:20,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705278025] [2024-10-10 23:18:20,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705278025] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:20,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:20,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:18:20,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849716101] [2024-10-10 23:18:20,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:20,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 23:18:20,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:20,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 23:18:20,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 23:18:20,873 INFO L87 Difference]: Start difference. First operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:20,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:20,935 INFO L93 Difference]: Finished difference Result 441 states and 839 transitions. [2024-10-10 23:18:20,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 23:18:20,937 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-10-10 23:18:20,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:20,946 INFO L225 Difference]: With dead ends: 441 [2024-10-10 23:18:20,946 INFO L226 Difference]: Without dead ends: 219 [2024-10-10 23:18:20,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 23:18:20,953 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:20,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 23:18:20,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-10-10 23:18:20,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2024-10-10 23:18:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2024-10-10 23:18:20,993 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 30 [2024-10-10 23:18:20,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:20,993 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2024-10-10 23:18:20,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:20,994 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2024-10-10 23:18:20,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-10 23:18:20,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:20,994 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:20,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 23:18:20,995 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:20,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:20,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1800183855, now seen corresponding path program 1 times [2024-10-10 23:18:20,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:20,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613738745] [2024-10-10 23:18:20,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:20,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:21,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:21,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613738745] [2024-10-10 23:18:21,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613738745] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:21,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:21,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:18:21,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937481202] [2024-10-10 23:18:21,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:21,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:21,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:21,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:21,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:21,140 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:21,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:21,868 INFO L93 Difference]: Finished difference Result 630 states and 1026 transitions. [2024-10-10 23:18:21,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:21,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-10-10 23:18:21,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:21,871 INFO L225 Difference]: With dead ends: 630 [2024-10-10 23:18:21,873 INFO L226 Difference]: Without dead ends: 412 [2024-10-10 23:18:21,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:21,876 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 193 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:21,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 155 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:18:21,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-10-10 23:18:21,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2024-10-10 23:18:21,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.4549878345498783) internal successors, (598), 411 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:21,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 598 transitions. [2024-10-10 23:18:21,904 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 598 transitions. Word has length 30 [2024-10-10 23:18:21,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:21,905 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 598 transitions. [2024-10-10 23:18:21,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:21,905 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 598 transitions. [2024-10-10 23:18:21,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-10 23:18:21,908 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:21,908 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:21,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 23:18:21,909 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:21,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:21,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1476818538, now seen corresponding path program 1 times [2024-10-10 23:18:21,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:21,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389174410] [2024-10-10 23:18:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:21,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:22,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:22,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389174410] [2024-10-10 23:18:22,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389174410] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:22,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:22,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:18:22,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037426993] [2024-10-10 23:18:22,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:22,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:22,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:22,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:22,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:22,149 INFO L87 Difference]: Start difference. First operand 412 states and 598 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:22,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:22,741 INFO L93 Difference]: Finished difference Result 1210 states and 1762 transitions. [2024-10-10 23:18:22,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:22,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-10-10 23:18:22,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:22,744 INFO L225 Difference]: With dead ends: 1210 [2024-10-10 23:18:22,744 INFO L226 Difference]: Without dead ends: 799 [2024-10-10 23:18:22,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:22,746 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 144 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:22,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 116 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:18:22,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2024-10-10 23:18:22,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 788. [2024-10-10 23:18:22,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.3761118170266835) internal successors, (1083), 787 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:22,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1083 transitions. [2024-10-10 23:18:22,772 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1083 transitions. Word has length 98 [2024-10-10 23:18:22,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:22,772 INFO L471 AbstractCegarLoop]: Abstraction has 788 states and 1083 transitions. [2024-10-10 23:18:22,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:22,772 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1083 transitions. [2024-10-10 23:18:22,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-10 23:18:22,774 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:22,775 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:22,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 23:18:22,775 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:22,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:22,775 INFO L85 PathProgramCache]: Analyzing trace with hash 741985082, now seen corresponding path program 1 times [2024-10-10 23:18:22,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:22,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733405716] [2024-10-10 23:18:22,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:22,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:23,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:23,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733405716] [2024-10-10 23:18:23,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733405716] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:23,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:23,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:18:23,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147197373] [2024-10-10 23:18:23,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:23,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:23,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:23,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:23,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:23,034 INFO L87 Difference]: Start difference. First operand 788 states and 1083 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:23,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:23,540 INFO L93 Difference]: Finished difference Result 1944 states and 2613 transitions. [2024-10-10 23:18:23,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:23,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-10-10 23:18:23,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:23,546 INFO L225 Difference]: With dead ends: 1944 [2024-10-10 23:18:23,546 INFO L226 Difference]: Without dead ends: 1157 [2024-10-10 23:18:23,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:23,550 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 120 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:23,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 188 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:18:23,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2024-10-10 23:18:23,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1156. [2024-10-10 23:18:23,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.2718614718614718) internal successors, (1469), 1155 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:23,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1469 transitions. [2024-10-10 23:18:23,584 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1469 transitions. Word has length 99 [2024-10-10 23:18:23,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:23,585 INFO L471 AbstractCegarLoop]: Abstraction has 1156 states and 1469 transitions. [2024-10-10 23:18:23,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:23,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1469 transitions. [2024-10-10 23:18:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-10-10 23:18:23,591 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:23,591 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:23,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 23:18:23,591 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:23,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:23,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1510404607, now seen corresponding path program 1 times [2024-10-10 23:18:23,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:23,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178904874] [2024-10-10 23:18:23,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:23,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:23,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:23,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178904874] [2024-10-10 23:18:23,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178904874] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:23,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:23,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:23,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739312000] [2024-10-10 23:18:23,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:23,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:23,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:23,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:23,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:23,803 INFO L87 Difference]: Start difference. First operand 1156 states and 1469 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:24,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:24,836 INFO L93 Difference]: Finished difference Result 3444 states and 4567 transitions. [2024-10-10 23:18:24,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:24,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2024-10-10 23:18:24,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:24,846 INFO L225 Difference]: With dead ends: 3444 [2024-10-10 23:18:24,846 INFO L226 Difference]: Without dead ends: 2473 [2024-10-10 23:18:24,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:24,849 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 363 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:24,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 84 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-10 23:18:24,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2024-10-10 23:18:24,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2472. [2024-10-10 23:18:24,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2471 states have (on average 1.2877377579927154) internal successors, (3182), 2471 states have internal predecessors, (3182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:24,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 3182 transitions. [2024-10-10 23:18:24,885 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 3182 transitions. Word has length 157 [2024-10-10 23:18:24,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:24,886 INFO L471 AbstractCegarLoop]: Abstraction has 2472 states and 3182 transitions. [2024-10-10 23:18:24,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:24,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 3182 transitions. [2024-10-10 23:18:24,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-10-10 23:18:24,890 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:24,890 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:24,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-10 23:18:24,892 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:24,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:24,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1351486791, now seen corresponding path program 1 times [2024-10-10 23:18:24,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:24,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698118640] [2024-10-10 23:18:24,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:24,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:25,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:25,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698118640] [2024-10-10 23:18:25,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698118640] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:25,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:25,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:25,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492684621] [2024-10-10 23:18:25,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:25,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:25,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:25,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:25,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:25,075 INFO L87 Difference]: Start difference. First operand 2472 states and 3182 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:25,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:25,698 INFO L93 Difference]: Finished difference Result 5694 states and 7519 transitions. [2024-10-10 23:18:25,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:25,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2024-10-10 23:18:25,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:25,708 INFO L225 Difference]: With dead ends: 5694 [2024-10-10 23:18:25,708 INFO L226 Difference]: Without dead ends: 3591 [2024-10-10 23:18:25,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:25,711 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 136 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:25,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 344 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:18:25,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3591 states. [2024-10-10 23:18:25,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3591 to 3578. [2024-10-10 23:18:25,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3578 states, 3577 states have (on average 1.2524461839530332) internal successors, (4480), 3577 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 4480 transitions. [2024-10-10 23:18:25,753 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 4480 transitions. Word has length 210 [2024-10-10 23:18:25,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:25,754 INFO L471 AbstractCegarLoop]: Abstraction has 3578 states and 4480 transitions. [2024-10-10 23:18:25,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:25,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 4480 transitions. [2024-10-10 23:18:25,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-10-10 23:18:25,756 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:25,756 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:25,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-10 23:18:25,756 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:25,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:25,757 INFO L85 PathProgramCache]: Analyzing trace with hash 332301943, now seen corresponding path program 1 times [2024-10-10 23:18:25,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:25,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751090288] [2024-10-10 23:18:25,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:25,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-10 23:18:25,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:25,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751090288] [2024-10-10 23:18:25,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751090288] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:25,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:25,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:25,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869155042] [2024-10-10 23:18:25,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:25,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:25,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:25,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:25,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:25,907 INFO L87 Difference]: Start difference. First operand 3578 states and 4480 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:26,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:26,478 INFO L93 Difference]: Finished difference Result 7725 states and 9780 transitions. [2024-10-10 23:18:26,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:26,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2024-10-10 23:18:26,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:26,489 INFO L225 Difference]: With dead ends: 7725 [2024-10-10 23:18:26,489 INFO L226 Difference]: Without dead ends: 4516 [2024-10-10 23:18:26,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:26,493 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 171 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:26,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 343 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:18:26,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4516 states. [2024-10-10 23:18:26,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4516 to 4498. [2024-10-10 23:18:26,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4498 states, 4497 states have (on average 1.2408272181454303) internal successors, (5580), 4497 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:26,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 5580 transitions. [2024-10-10 23:18:26,543 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 5580 transitions. Word has length 211 [2024-10-10 23:18:26,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:26,543 INFO L471 AbstractCegarLoop]: Abstraction has 4498 states and 5580 transitions. [2024-10-10 23:18:26,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:26,544 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 5580 transitions. [2024-10-10 23:18:26,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-10-10 23:18:26,545 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:26,545 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:26,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-10 23:18:26,546 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:26,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:26,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1550822466, now seen corresponding path program 1 times [2024-10-10 23:18:26,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:26,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808965050] [2024-10-10 23:18:26,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:26,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-10 23:18:26,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:26,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808965050] [2024-10-10 23:18:26,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808965050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:26,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:26,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:26,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329548379] [2024-10-10 23:18:26,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:26,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:26,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:26,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:26,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:26,705 INFO L87 Difference]: Start difference. First operand 4498 states and 5580 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:27,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:27,345 INFO L93 Difference]: Finished difference Result 9740 states and 12304 transitions. [2024-10-10 23:18:27,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:27,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2024-10-10 23:18:27,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:27,361 INFO L225 Difference]: With dead ends: 9740 [2024-10-10 23:18:27,361 INFO L226 Difference]: Without dead ends: 5611 [2024-10-10 23:18:27,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:27,367 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 166 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:27,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 368 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:18:27,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5611 states. [2024-10-10 23:18:27,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5611 to 5418. [2024-10-10 23:18:27,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5417 states have (on average 1.2331548827764445) internal successors, (6680), 5417 states have internal predecessors, (6680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:27,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 6680 transitions. [2024-10-10 23:18:27,440 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 6680 transitions. Word has length 212 [2024-10-10 23:18:27,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:27,440 INFO L471 AbstractCegarLoop]: Abstraction has 5418 states and 6680 transitions. [2024-10-10 23:18:27,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:27,440 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 6680 transitions. [2024-10-10 23:18:27,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-10-10 23:18:27,443 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:27,443 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:27,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-10 23:18:27,443 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:27,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:27,444 INFO L85 PathProgramCache]: Analyzing trace with hash -533407248, now seen corresponding path program 1 times [2024-10-10 23:18:27,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:27,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153806854] [2024-10-10 23:18:27,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:27,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:27,781 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:27,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:27,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153806854] [2024-10-10 23:18:27,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153806854] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:27,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:27,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 23:18:27,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679200208] [2024-10-10 23:18:27,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:27,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:27,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:27,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:27,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:27,784 INFO L87 Difference]: Start difference. First operand 5418 states and 6680 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:28,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:28,783 INFO L93 Difference]: Finished difference Result 16398 states and 20712 transitions. [2024-10-10 23:18:28,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:28,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2024-10-10 23:18:28,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:28,821 INFO L225 Difference]: With dead ends: 16398 [2024-10-10 23:18:28,821 INFO L226 Difference]: Without dead ends: 11349 [2024-10-10 23:18:28,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:28,832 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 302 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:28,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 205 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 23:18:28,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11349 states. [2024-10-10 23:18:28,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11349 to 11343. [2024-10-10 23:18:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11343 states, 11342 states have (on average 1.206048315993652) internal successors, (13679), 11342 states have internal predecessors, (13679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11343 states to 11343 states and 13679 transitions. [2024-10-10 23:18:28,970 INFO L78 Accepts]: Start accepts. Automaton has 11343 states and 13679 transitions. Word has length 232 [2024-10-10 23:18:28,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:28,970 INFO L471 AbstractCegarLoop]: Abstraction has 11343 states and 13679 transitions. [2024-10-10 23:18:28,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:28,971 INFO L276 IsEmpty]: Start isEmpty. Operand 11343 states and 13679 transitions. [2024-10-10 23:18:28,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-10-10 23:18:28,973 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:28,973 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:28,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-10 23:18:28,974 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:28,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:28,974 INFO L85 PathProgramCache]: Analyzing trace with hash -851626696, now seen corresponding path program 1 times [2024-10-10 23:18:28,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:28,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119305934] [2024-10-10 23:18:28,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:28,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:29,097 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-10 23:18:29,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:29,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119305934] [2024-10-10 23:18:29,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119305934] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:29,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:29,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:18:29,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038927362] [2024-10-10 23:18:29,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:29,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:29,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:29,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:29,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:29,099 INFO L87 Difference]: Start difference. First operand 11343 states and 13679 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:29,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:29,670 INFO L93 Difference]: Finished difference Result 25074 states and 30488 transitions. [2024-10-10 23:18:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:29,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2024-10-10 23:18:29,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:29,689 INFO L225 Difference]: With dead ends: 25074 [2024-10-10 23:18:29,690 INFO L226 Difference]: Without dead ends: 14100 [2024-10-10 23:18:29,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:29,702 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 115 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:29,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 151 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:18:29,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14100 states. [2024-10-10 23:18:29,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14100 to 13546. [2024-10-10 23:18:29,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13546 states, 13545 states have (on average 1.1601328903654484) internal successors, (15714), 13545 states have internal predecessors, (15714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13546 states to 13546 states and 15714 transitions. [2024-10-10 23:18:29,943 INFO L78 Accepts]: Start accepts. Automaton has 13546 states and 15714 transitions. Word has length 233 [2024-10-10 23:18:29,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:29,947 INFO L471 AbstractCegarLoop]: Abstraction has 13546 states and 15714 transitions. [2024-10-10 23:18:29,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:29,948 INFO L276 IsEmpty]: Start isEmpty. Operand 13546 states and 15714 transitions. [2024-10-10 23:18:29,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-10-10 23:18:29,953 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:29,957 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:29,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-10 23:18:29,957 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:29,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:29,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1626578551, now seen corresponding path program 1 times [2024-10-10 23:18:29,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:29,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64395993] [2024-10-10 23:18:29,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:29,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:30,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:30,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64395993] [2024-10-10 23:18:30,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64395993] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:30,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:30,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 23:18:30,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424530728] [2024-10-10 23:18:30,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:30,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:30,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:30,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:30,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:30,209 INFO L87 Difference]: Start difference. First operand 13546 states and 15714 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:31,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:31,221 INFO L93 Difference]: Finished difference Result 32622 states and 38077 transitions. [2024-10-10 23:18:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:31,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2024-10-10 23:18:31,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:31,247 INFO L225 Difference]: With dead ends: 32622 [2024-10-10 23:18:31,248 INFO L226 Difference]: Without dead ends: 19445 [2024-10-10 23:18:31,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:31,264 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 319 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:31,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 104 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 23:18:31,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19445 states. [2024-10-10 23:18:31,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19445 to 17961. [2024-10-10 23:18:31,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17961 states, 17960 states have (on average 1.158129175946548) internal successors, (20800), 17960 states have internal predecessors, (20800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:31,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17961 states to 17961 states and 20800 transitions. [2024-10-10 23:18:31,448 INFO L78 Accepts]: Start accepts. Automaton has 17961 states and 20800 transitions. Word has length 242 [2024-10-10 23:18:31,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:31,449 INFO L471 AbstractCegarLoop]: Abstraction has 17961 states and 20800 transitions. [2024-10-10 23:18:31,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:31,449 INFO L276 IsEmpty]: Start isEmpty. Operand 17961 states and 20800 transitions. [2024-10-10 23:18:31,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-10-10 23:18:31,452 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:31,452 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:31,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-10 23:18:31,453 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:31,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:31,453 INFO L85 PathProgramCache]: Analyzing trace with hash -534193244, now seen corresponding path program 1 times [2024-10-10 23:18:31,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:31,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444578326] [2024-10-10 23:18:31,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:31,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-10 23:18:31,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:31,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444578326] [2024-10-10 23:18:31,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444578326] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:31,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:31,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:31,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570747105] [2024-10-10 23:18:31,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:31,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:31,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:31,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:31,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:31,675 INFO L87 Difference]: Start difference. First operand 17961 states and 20800 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:32,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:32,279 INFO L93 Difference]: Finished difference Result 35184 states and 40784 transitions. [2024-10-10 23:18:32,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:32,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2024-10-10 23:18:32,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:32,302 INFO L225 Difference]: With dead ends: 35184 [2024-10-10 23:18:32,302 INFO L226 Difference]: Without dead ends: 17408 [2024-10-10 23:18:32,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:32,319 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 170 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:32,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 375 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:18:32,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17408 states. [2024-10-10 23:18:32,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17408 to 17216. [2024-10-10 23:18:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17216 states, 17215 states have (on average 1.1367993029334882) internal successors, (19570), 17215 states have internal predecessors, (19570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17216 states to 17216 states and 19570 transitions. [2024-10-10 23:18:32,566 INFO L78 Accepts]: Start accepts. Automaton has 17216 states and 19570 transitions. Word has length 249 [2024-10-10 23:18:32,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:32,567 INFO L471 AbstractCegarLoop]: Abstraction has 17216 states and 19570 transitions. [2024-10-10 23:18:32,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:32,567 INFO L276 IsEmpty]: Start isEmpty. Operand 17216 states and 19570 transitions. [2024-10-10 23:18:32,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-10-10 23:18:32,570 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:32,571 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:32,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-10 23:18:32,571 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:32,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:32,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1630613573, now seen corresponding path program 1 times [2024-10-10 23:18:32,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:32,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036661547] [2024-10-10 23:18:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:32,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 113 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:33,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:33,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036661547] [2024-10-10 23:18:33,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036661547] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:33,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074410762] [2024-10-10 23:18:33,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:33,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:33,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:33,021 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:33,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 23:18:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:33,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:18:33,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:33,576 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:18:33,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074410762] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:33,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:18:33,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 23:18:33,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819776502] [2024-10-10 23:18:33,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:33,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:33,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:33,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:33,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:18:33,578 INFO L87 Difference]: Start difference. First operand 17216 states and 19570 transitions. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:34,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:34,279 INFO L93 Difference]: Finished difference Result 32041 states and 36492 transitions. [2024-10-10 23:18:34,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:34,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2024-10-10 23:18:34,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:34,295 INFO L225 Difference]: With dead ends: 32041 [2024-10-10 23:18:34,295 INFO L226 Difference]: Without dead ends: 17222 [2024-10-10 23:18:34,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:18:34,308 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 172 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:34,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 176 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:18:34,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17222 states. [2024-10-10 23:18:34,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17222 to 17216. [2024-10-10 23:18:34,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17216 states, 17215 states have (on average 1.1354051699099623) internal successors, (19546), 17215 states have internal predecessors, (19546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17216 states to 17216 states and 19546 transitions. [2024-10-10 23:18:34,451 INFO L78 Accepts]: Start accepts. Automaton has 17216 states and 19546 transitions. Word has length 263 [2024-10-10 23:18:34,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:34,452 INFO L471 AbstractCegarLoop]: Abstraction has 17216 states and 19546 transitions. [2024-10-10 23:18:34,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 17216 states and 19546 transitions. [2024-10-10 23:18:34,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-10-10 23:18:34,458 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:34,458 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:34,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 23:18:34,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-10 23:18:34,659 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:34,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:34,660 INFO L85 PathProgramCache]: Analyzing trace with hash 827517491, now seen corresponding path program 1 times [2024-10-10 23:18:34,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:34,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745223302] [2024-10-10 23:18:34,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:34,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-10-10 23:18:34,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:34,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745223302] [2024-10-10 23:18:34,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745223302] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:34,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:34,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:34,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698695212] [2024-10-10 23:18:34,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:34,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:34,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:34,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:34,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:34,851 INFO L87 Difference]: Start difference. First operand 17216 states and 19546 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:35,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:35,399 INFO L93 Difference]: Finished difference Result 35898 states and 40778 transitions. [2024-10-10 23:18:35,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:35,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 297 [2024-10-10 23:18:35,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:35,423 INFO L225 Difference]: With dead ends: 35898 [2024-10-10 23:18:35,423 INFO L226 Difference]: Without dead ends: 21079 [2024-10-10 23:18:35,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:35,435 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 190 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:35,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 149 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:18:35,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21079 states. [2024-10-10 23:18:35,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21079 to 18135. [2024-10-10 23:18:35,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18135 states, 18134 states have (on average 1.1355464872614978) internal successors, (20592), 18134 states have internal predecessors, (20592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:35,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18135 states to 18135 states and 20592 transitions. [2024-10-10 23:18:35,605 INFO L78 Accepts]: Start accepts. Automaton has 18135 states and 20592 transitions. Word has length 297 [2024-10-10 23:18:35,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:35,606 INFO L471 AbstractCegarLoop]: Abstraction has 18135 states and 20592 transitions. [2024-10-10 23:18:35,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:35,606 INFO L276 IsEmpty]: Start isEmpty. Operand 18135 states and 20592 transitions. [2024-10-10 23:18:35,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-10-10 23:18:35,612 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:35,612 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:35,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-10 23:18:35,612 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:35,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:35,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1244535125, now seen corresponding path program 1 times [2024-10-10 23:18:35,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:35,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874076694] [2024-10-10 23:18:35,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:35,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:36,132 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-10 23:18:36,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:36,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874076694] [2024-10-10 23:18:36,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874076694] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:36,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:36,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 23:18:36,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359219615] [2024-10-10 23:18:36,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:36,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:36,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:36,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:36,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:36,136 INFO L87 Difference]: Start difference. First operand 18135 states and 20592 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:37,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:37,130 INFO L93 Difference]: Finished difference Result 41456 states and 47288 transitions. [2024-10-10 23:18:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:37,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 301 [2024-10-10 23:18:37,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:37,154 INFO L225 Difference]: With dead ends: 41456 [2024-10-10 23:18:37,154 INFO L226 Difference]: Without dead ends: 24977 [2024-10-10 23:18:37,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:37,168 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 313 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:37,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 420 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 23:18:37,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24977 states. [2024-10-10 23:18:37,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24977 to 20163. [2024-10-10 23:18:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20163 states, 20162 states have (on average 1.1247892074198989) internal successors, (22678), 20162 states have internal predecessors, (22678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20163 states to 20163 states and 22678 transitions. [2024-10-10 23:18:37,392 INFO L78 Accepts]: Start accepts. Automaton has 20163 states and 22678 transitions. Word has length 301 [2024-10-10 23:18:37,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:37,393 INFO L471 AbstractCegarLoop]: Abstraction has 20163 states and 22678 transitions. [2024-10-10 23:18:37,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:37,393 INFO L276 IsEmpty]: Start isEmpty. Operand 20163 states and 22678 transitions. [2024-10-10 23:18:37,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-10-10 23:18:37,398 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:37,398 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:37,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-10 23:18:37,398 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:37,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:37,399 INFO L85 PathProgramCache]: Analyzing trace with hash 347530265, now seen corresponding path program 1 times [2024-10-10 23:18:37,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:37,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638783018] [2024-10-10 23:18:37,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:37,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 56 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:37,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638783018] [2024-10-10 23:18:37,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638783018] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325026892] [2024-10-10 23:18:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:37,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:37,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:37,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:37,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 23:18:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:37,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:18:37,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:37,917 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-10-10 23:18:37,917 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:18:37,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325026892] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:37,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:18:37,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-10 23:18:37,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713419269] [2024-10-10 23:18:37,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:37,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:37,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:37,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:37,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:18:37,919 INFO L87 Difference]: Start difference. First operand 20163 states and 22678 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:38,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:38,358 INFO L93 Difference]: Finished difference Result 20349 states and 22869 transitions. [2024-10-10 23:18:38,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:38,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2024-10-10 23:18:38,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:38,376 INFO L225 Difference]: With dead ends: 20349 [2024-10-10 23:18:38,377 INFO L226 Difference]: Without dead ends: 20347 [2024-10-10 23:18:38,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:18:38,382 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 156 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:38,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 379 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:18:38,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20347 states. [2024-10-10 23:18:38,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20347 to 20163. [2024-10-10 23:18:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20163 states, 20162 states have (on average 1.1247892074198989) internal successors, (22678), 20162 states have internal predecessors, (22678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:38,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20163 states to 20163 states and 22678 transitions. [2024-10-10 23:18:38,590 INFO L78 Accepts]: Start accepts. Automaton has 20163 states and 22678 transitions. Word has length 310 [2024-10-10 23:18:38,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:38,590 INFO L471 AbstractCegarLoop]: Abstraction has 20163 states and 22678 transitions. [2024-10-10 23:18:38,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:38,591 INFO L276 IsEmpty]: Start isEmpty. Operand 20163 states and 22678 transitions. [2024-10-10 23:18:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-10-10 23:18:38,596 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:38,596 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:38,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-10 23:18:38,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-10 23:18:38,797 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:38,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:38,797 INFO L85 PathProgramCache]: Analyzing trace with hash -708126595, now seen corresponding path program 1 times [2024-10-10 23:18:38,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:38,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761250901] [2024-10-10 23:18:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:38,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-10 23:18:39,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:39,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761250901] [2024-10-10 23:18:39,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761250901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:39,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:39,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 23:18:39,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499731880] [2024-10-10 23:18:39,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:39,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:39,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:39,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:39,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:39,017 INFO L87 Difference]: Start difference. First operand 20163 states and 22678 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:39,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:39,919 INFO L93 Difference]: Finished difference Result 46980 states and 52837 transitions. [2024-10-10 23:18:39,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:39,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 317 [2024-10-10 23:18:39,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:39,946 INFO L225 Difference]: With dead ends: 46980 [2024-10-10 23:18:39,947 INFO L226 Difference]: Without dead ends: 29214 [2024-10-10 23:18:39,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:39,961 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 330 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:39,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 76 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 23:18:39,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29214 states. [2024-10-10 23:18:40,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29214 to 26992. [2024-10-10 23:18:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26992 states, 26991 states have (on average 1.1211885443295913) internal successors, (30262), 26991 states have internal predecessors, (30262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26992 states to 26992 states and 30262 transitions. [2024-10-10 23:18:40,246 INFO L78 Accepts]: Start accepts. Automaton has 26992 states and 30262 transitions. Word has length 317 [2024-10-10 23:18:40,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:40,247 INFO L471 AbstractCegarLoop]: Abstraction has 26992 states and 30262 transitions. [2024-10-10 23:18:40,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:40,247 INFO L276 IsEmpty]: Start isEmpty. Operand 26992 states and 30262 transitions. [2024-10-10 23:18:40,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-10-10 23:18:40,253 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:40,254 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:40,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-10 23:18:40,254 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:40,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:40,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2061924770, now seen corresponding path program 1 times [2024-10-10 23:18:40,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:40,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871148708] [2024-10-10 23:18:40,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:40,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:40,498 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 57 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:40,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:40,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871148708] [2024-10-10 23:18:40,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871148708] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:40,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353485498] [2024-10-10 23:18:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:40,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:40,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:40,501 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:40,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 23:18:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:40,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-10 23:18:40,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 57 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:40,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:18:42,218 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 57 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:42,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353485498] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 23:18:42,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 23:18:42,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2024-10-10 23:18:42,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109559465] [2024-10-10 23:18:42,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 23:18:42,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-10 23:18:42,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:42,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-10 23:18:42,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-10-10 23:18:42,222 INFO L87 Difference]: Start difference. First operand 26992 states and 30262 transitions. Second operand has 10 states, 10 states have (on average 68.7) internal successors, (687), 9 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:44,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:44,774 INFO L93 Difference]: Finished difference Result 72083 states and 80691 transitions. [2024-10-10 23:18:44,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-10 23:18:44,774 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 68.7) internal successors, (687), 9 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 328 [2024-10-10 23:18:44,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:44,827 INFO L225 Difference]: With dead ends: 72083 [2024-10-10 23:18:44,827 INFO L226 Difference]: Without dead ends: 48040 [2024-10-10 23:18:44,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-10-10 23:18:44,856 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 1066 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 3961 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 4437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 3961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:44,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 228 Invalid, 4437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 3961 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-10 23:18:44,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48040 states. [2024-10-10 23:18:45,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48040 to 43059. [2024-10-10 23:18:45,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43059 states, 43058 states have (on average 1.1203725207859168) internal successors, (48241), 43058 states have internal predecessors, (48241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43059 states to 43059 states and 48241 transitions. [2024-10-10 23:18:45,513 INFO L78 Accepts]: Start accepts. Automaton has 43059 states and 48241 transitions. Word has length 328 [2024-10-10 23:18:45,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:45,513 INFO L471 AbstractCegarLoop]: Abstraction has 43059 states and 48241 transitions. [2024-10-10 23:18:45,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.7) internal successors, (687), 9 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:45,513 INFO L276 IsEmpty]: Start isEmpty. Operand 43059 states and 48241 transitions. [2024-10-10 23:18:45,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-10-10 23:18:45,530 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:45,530 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:45,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-10 23:18:45,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:45,731 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:45,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:45,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1955931774, now seen corresponding path program 1 times [2024-10-10 23:18:45,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:45,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840520187] [2024-10-10 23:18:45,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:45,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:46,103 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-10-10 23:18:46,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:46,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840520187] [2024-10-10 23:18:46,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840520187] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:46,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:46,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 23:18:46,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817749511] [2024-10-10 23:18:46,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:46,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:46,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:46,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:46,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:46,105 INFO L87 Difference]: Start difference. First operand 43059 states and 48241 transitions. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:47,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:47,030 INFO L93 Difference]: Finished difference Result 89076 states and 99655 transitions. [2024-10-10 23:18:47,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:47,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 352 [2024-10-10 23:18:47,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:47,077 INFO L225 Difference]: With dead ends: 89076 [2024-10-10 23:18:47,077 INFO L226 Difference]: Without dead ends: 49152 [2024-10-10 23:18:47,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:47,101 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 327 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:47,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 57 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:18:47,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49152 states. [2024-10-10 23:18:47,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49152 to 44710. [2024-10-10 23:18:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44710 states, 44709 states have (on average 1.118678565836856) internal successors, (50015), 44709 states have internal predecessors, (50015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:47,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44710 states to 44710 states and 50015 transitions. [2024-10-10 23:18:47,747 INFO L78 Accepts]: Start accepts. Automaton has 44710 states and 50015 transitions. Word has length 352 [2024-10-10 23:18:47,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:47,747 INFO L471 AbstractCegarLoop]: Abstraction has 44710 states and 50015 transitions. [2024-10-10 23:18:47,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:47,747 INFO L276 IsEmpty]: Start isEmpty. Operand 44710 states and 50015 transitions. [2024-10-10 23:18:47,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-10-10 23:18:47,759 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:47,759 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:47,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-10 23:18:47,759 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:47,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:47,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1787910449, now seen corresponding path program 1 times [2024-10-10 23:18:47,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:47,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169025852] [2024-10-10 23:18:47,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:47,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-10-10 23:18:47,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:47,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169025852] [2024-10-10 23:18:47,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169025852] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:47,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:47,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:47,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153178613] [2024-10-10 23:18:47,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:47,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:47,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:47,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:47,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:47,996 INFO L87 Difference]: Start difference. First operand 44710 states and 50015 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:48,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:48,590 INFO L93 Difference]: Finished difference Result 93467 states and 104621 transitions. [2024-10-10 23:18:48,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:48,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 388 [2024-10-10 23:18:48,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:48,639 INFO L225 Difference]: With dead ends: 93467 [2024-10-10 23:18:48,639 INFO L226 Difference]: Without dead ends: 49126 [2024-10-10 23:18:48,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:48,668 INFO L432 NwaCegarLoop]: 342 mSDtfsCounter, 63 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:48,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 366 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:18:48,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49126 states. [2024-10-10 23:18:49,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49126 to 46366. [2024-10-10 23:18:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46366 states, 46365 states have (on average 1.1162514827995256) internal successors, (51755), 46365 states have internal predecessors, (51755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:49,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46366 states to 46366 states and 51755 transitions. [2024-10-10 23:18:49,180 INFO L78 Accepts]: Start accepts. Automaton has 46366 states and 51755 transitions. Word has length 388 [2024-10-10 23:18:49,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:49,180 INFO L471 AbstractCegarLoop]: Abstraction has 46366 states and 51755 transitions. [2024-10-10 23:18:49,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:49,180 INFO L276 IsEmpty]: Start isEmpty. Operand 46366 states and 51755 transitions. [2024-10-10 23:18:49,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-10-10 23:18:49,334 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:49,335 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:49,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-10 23:18:49,335 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:49,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:49,335 INFO L85 PathProgramCache]: Analyzing trace with hash 36311470, now seen corresponding path program 1 times [2024-10-10 23:18:49,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:49,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299425797] [2024-10-10 23:18:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:49,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2024-10-10 23:18:49,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:49,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299425797] [2024-10-10 23:18:49,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299425797] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:49,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:49,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:49,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195809659] [2024-10-10 23:18:49,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:49,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:49,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:49,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:49,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:49,533 INFO L87 Difference]: Start difference. First operand 46366 states and 51755 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:50,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:50,216 INFO L93 Difference]: Finished difference Result 88676 states and 98871 transitions. [2024-10-10 23:18:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:50,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 403 [2024-10-10 23:18:50,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:50,255 INFO L225 Difference]: With dead ends: 88676 [2024-10-10 23:18:50,255 INFO L226 Difference]: Without dead ends: 45813 [2024-10-10 23:18:50,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:18:50,279 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 166 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:50,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 354 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:18:50,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45813 states. [2024-10-10 23:18:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45813 to 27351. [2024-10-10 23:18:50,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27351 states, 27350 states have (on average 1.1157221206581354) internal successors, (30515), 27350 states have internal predecessors, (30515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:50,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27351 states to 27351 states and 30515 transitions. [2024-10-10 23:18:50,674 INFO L78 Accepts]: Start accepts. Automaton has 27351 states and 30515 transitions. Word has length 403 [2024-10-10 23:18:50,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:50,674 INFO L471 AbstractCegarLoop]: Abstraction has 27351 states and 30515 transitions. [2024-10-10 23:18:50,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 27351 states and 30515 transitions. [2024-10-10 23:18:50,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2024-10-10 23:18:50,684 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:50,685 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:50,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-10 23:18:50,685 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:50,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:50,685 INFO L85 PathProgramCache]: Analyzing trace with hash 436109443, now seen corresponding path program 1 times [2024-10-10 23:18:50,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:50,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122041867] [2024-10-10 23:18:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:50,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-10-10 23:18:51,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:51,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122041867] [2024-10-10 23:18:51,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122041867] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:51,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272266864] [2024-10-10 23:18:51,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:51,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:51,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:51,080 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:51,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 23:18:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:51,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:18:51,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-10-10 23:18:51,226 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:18:51,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272266864] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:51,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:18:51,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-10 23:18:51,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933201903] [2024-10-10 23:18:51,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:51,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:51,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:51,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:51,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:18:51,228 INFO L87 Difference]: Start difference. First operand 27351 states and 30515 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:51,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:51,805 INFO L93 Difference]: Finished difference Result 55986 states and 62402 transitions. [2024-10-10 23:18:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:51,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 425 [2024-10-10 23:18:51,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:51,830 INFO L225 Difference]: With dead ends: 55986 [2024-10-10 23:18:51,830 INFO L226 Difference]: Without dead ends: 29004 [2024-10-10 23:18:51,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:18:51,842 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 174 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:51,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 136 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:18:51,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29004 states. [2024-10-10 23:18:52,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29004 to 26422. [2024-10-10 23:18:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26422 states, 26421 states have (on average 1.1115400628288103) internal successors, (29368), 26421 states have internal predecessors, (29368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:52,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26422 states to 26422 states and 29368 transitions. [2024-10-10 23:18:52,185 INFO L78 Accepts]: Start accepts. Automaton has 26422 states and 29368 transitions. Word has length 425 [2024-10-10 23:18:52,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:52,185 INFO L471 AbstractCegarLoop]: Abstraction has 26422 states and 29368 transitions. [2024-10-10 23:18:52,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:52,186 INFO L276 IsEmpty]: Start isEmpty. Operand 26422 states and 29368 transitions. [2024-10-10 23:18:52,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2024-10-10 23:18:52,206 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:52,206 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:52,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-10 23:18:52,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-10 23:18:52,407 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:52,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:52,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1819270042, now seen corresponding path program 1 times [2024-10-10 23:18:52,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:52,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167485318] [2024-10-10 23:18:52,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:52,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 510 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-10 23:18:52,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:52,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167485318] [2024-10-10 23:18:52,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167485318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:52,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:52,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:52,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296633013] [2024-10-10 23:18:52,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:52,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:52,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:52,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:52,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:52,940 INFO L87 Difference]: Start difference. First operand 26422 states and 29368 transitions. Second operand has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:53,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:53,886 INFO L93 Difference]: Finished difference Result 60957 states and 67824 transitions. [2024-10-10 23:18:53,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:53,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 516 [2024-10-10 23:18:53,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:53,916 INFO L225 Difference]: With dead ends: 60957 [2024-10-10 23:18:53,916 INFO L226 Difference]: Without dead ends: 34904 [2024-10-10 23:18:53,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:53,928 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 121 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:53,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 99 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:18:53,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34904 states. [2024-10-10 23:18:54,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34904 to 31219. [2024-10-10 23:18:54,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31219 states, 31218 states have (on average 1.106637196489205) internal successors, (34547), 31218 states have internal predecessors, (34547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31219 states to 31219 states and 34547 transitions. [2024-10-10 23:18:54,200 INFO L78 Accepts]: Start accepts. Automaton has 31219 states and 34547 transitions. Word has length 516 [2024-10-10 23:18:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:54,200 INFO L471 AbstractCegarLoop]: Abstraction has 31219 states and 34547 transitions. [2024-10-10 23:18:54,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 31219 states and 34547 transitions. [2024-10-10 23:18:54,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2024-10-10 23:18:54,218 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:54,219 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:54,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-10 23:18:54,219 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:54,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:54,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1070980472, now seen corresponding path program 1 times [2024-10-10 23:18:54,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:54,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490165837] [2024-10-10 23:18:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:54,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:54,865 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 29 proven. 394 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-10-10 23:18:54,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:54,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490165837] [2024-10-10 23:18:54,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490165837] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:54,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666436058] [2024-10-10 23:18:54,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:54,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:54,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:54,867 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:54,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 23:18:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:55,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 23:18:55,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 29 proven. 394 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-10-10 23:18:55,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:18:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 29 proven. 394 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-10-10 23:18:59,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666436058] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 23:18:59,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 23:18:59,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 11 [2024-10-10 23:18:59,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396984941] [2024-10-10 23:18:59,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 23:18:59,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-10 23:18:59,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:59,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-10 23:18:59,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-10-10 23:18:59,889 INFO L87 Difference]: Start difference. First operand 31219 states and 34547 transitions. Second operand has 12 states, 12 states have (on average 96.33333333333333) internal successors, (1156), 11 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:03,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:03,470 INFO L93 Difference]: Finished difference Result 100592 states and 111211 transitions. [2024-10-10 23:19:03,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-10 23:19:03,470 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 96.33333333333333) internal successors, (1156), 11 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 554 [2024-10-10 23:19:03,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:03,541 INFO L225 Difference]: With dead ends: 100592 [2024-10-10 23:19:03,541 INFO L226 Difference]: Without dead ends: 72690 [2024-10-10 23:19:03,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1117 GetRequests, 1100 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2024-10-10 23:19:03,572 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 1610 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 4332 mSolverCounterSat, 1086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 5418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1086 IncrementalHoareTripleChecker+Valid, 4332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:03,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 228 Invalid, 5418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1086 Valid, 4332 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-10 23:19:03,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72690 states. [2024-10-10 23:19:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72690 to 44478. [2024-10-10 23:19:04,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44478 states, 44477 states have (on average 1.1063471007487016) internal successors, (49207), 44477 states have internal predecessors, (49207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:04,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44478 states to 44478 states and 49207 transitions. [2024-10-10 23:19:04,251 INFO L78 Accepts]: Start accepts. Automaton has 44478 states and 49207 transitions. Word has length 554 [2024-10-10 23:19:04,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:04,251 INFO L471 AbstractCegarLoop]: Abstraction has 44478 states and 49207 transitions. [2024-10-10 23:19:04,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 96.33333333333333) internal successors, (1156), 11 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:04,252 INFO L276 IsEmpty]: Start isEmpty. Operand 44478 states and 49207 transitions. [2024-10-10 23:19:04,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2024-10-10 23:19:04,282 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:19:04,283 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:19:04,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-10 23:19:04,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-10 23:19:04,483 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:19:04,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:19:04,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1483537339, now seen corresponding path program 1 times [2024-10-10 23:19:04,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:19:04,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789514078] [2024-10-10 23:19:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:04,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:19:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:04,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1883 backedges. 1352 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2024-10-10 23:19:04,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:19:04,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789514078] [2024-10-10 23:19:04,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789514078] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:19:04,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:19:04,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:19:04,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076871521] [2024-10-10 23:19:04,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:19:04,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:19:04,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:19:04,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:19:04,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:19:04,837 INFO L87 Difference]: Start difference. First operand 44478 states and 49207 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:05,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:05,453 INFO L93 Difference]: Finished difference Result 88256 states and 97581 transitions. [2024-10-10 23:19:05,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:19:05,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 823 [2024-10-10 23:19:05,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:05,497 INFO L225 Difference]: With dead ends: 88256 [2024-10-10 23:19:05,497 INFO L226 Difference]: Without dead ends: 45807 [2024-10-10 23:19:05,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:19:05,525 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 100 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:05,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 148 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:19:05,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45807 states. [2024-10-10 23:19:06,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45807 to 42268. [2024-10-10 23:19:06,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42268 states, 42267 states have (on average 1.097735822272695) internal successors, (46398), 42267 states have internal predecessors, (46398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42268 states to 42268 states and 46398 transitions. [2024-10-10 23:19:06,100 INFO L78 Accepts]: Start accepts. Automaton has 42268 states and 46398 transitions. Word has length 823 [2024-10-10 23:19:06,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:06,101 INFO L471 AbstractCegarLoop]: Abstraction has 42268 states and 46398 transitions. [2024-10-10 23:19:06,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:06,101 INFO L276 IsEmpty]: Start isEmpty. Operand 42268 states and 46398 transitions. [2024-10-10 23:19:06,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2024-10-10 23:19:06,130 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:19:06,130 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:19:06,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-10 23:19:06,131 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:19:06,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:19:06,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1884466130, now seen corresponding path program 1 times [2024-10-10 23:19:06,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:19:06,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871390181] [2024-10-10 23:19:06,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:06,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:19:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 1342 proven. 0 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2024-10-10 23:19:06,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:19:06,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871390181] [2024-10-10 23:19:06,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871390181] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:19:06,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:19:06,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:19:06,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093498790] [2024-10-10 23:19:06,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:19:06,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:19:06,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:19:06,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:19:06,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:19:06,661 INFO L87 Difference]: Start difference. First operand 42268 states and 46398 transitions. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:07,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:07,227 INFO L93 Difference]: Finished difference Result 79191 states and 86910 transitions. [2024-10-10 23:19:07,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:19:07,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 856 [2024-10-10 23:19:07,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:07,263 INFO L225 Difference]: With dead ends: 79191 [2024-10-10 23:19:07,263 INFO L226 Difference]: Without dead ends: 37292 [2024-10-10 23:19:07,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:19:07,286 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 75 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:07,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 339 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:19:07,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37292 states. [2024-10-10 23:19:07,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37292 to 35445. [2024-10-10 23:19:07,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35445 states, 35444 states have (on average 1.088223676785916) internal successors, (38571), 35444 states have internal predecessors, (38571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:07,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35445 states to 35445 states and 38571 transitions. [2024-10-10 23:19:07,603 INFO L78 Accepts]: Start accepts. Automaton has 35445 states and 38571 transitions. Word has length 856 [2024-10-10 23:19:07,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:07,603 INFO L471 AbstractCegarLoop]: Abstraction has 35445 states and 38571 transitions. [2024-10-10 23:19:07,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:07,604 INFO L276 IsEmpty]: Start isEmpty. Operand 35445 states and 38571 transitions. [2024-10-10 23:19:07,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2024-10-10 23:19:07,633 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:19:07,633 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:19:07,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-10 23:19:07,634 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:19:07,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:19:07,634 INFO L85 PathProgramCache]: Analyzing trace with hash 895363327, now seen corresponding path program 1 times [2024-10-10 23:19:07,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:19:07,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385109603] [2024-10-10 23:19:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:07,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:19:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 1561 proven. 511 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-10-10 23:19:08,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:19:08,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385109603] [2024-10-10 23:19:08,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385109603] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:19:08,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714813167] [2024-10-10 23:19:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:08,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:19:08,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:19:08,906 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:19:08,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 23:19:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:09,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:19:09,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:19:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 1056 proven. 0 refuted. 0 times theorem prover too weak. 1195 trivial. 0 not checked. [2024-10-10 23:19:09,298 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:19:09,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714813167] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:19:09,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:19:09,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-10-10 23:19:09,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910188745] [2024-10-10 23:19:09,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:19:09,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:19:09,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:19:09,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:19:09,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-10 23:19:09,300 INFO L87 Difference]: Start difference. First operand 35445 states and 38571 transitions. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:10,172 INFO L93 Difference]: Finished difference Result 76791 states and 83722 transitions. [2024-10-10 23:19:10,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:19:10,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 882 [2024-10-10 23:19:10,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:10,211 INFO L225 Difference]: With dead ends: 76791 [2024-10-10 23:19:10,211 INFO L226 Difference]: Without dead ends: 41715 [2024-10-10 23:19:10,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-10 23:19:10,234 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 251 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:10,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 97 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:19:10,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41715 states. [2024-10-10 23:19:10,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41715 to 38581. [2024-10-10 23:19:10,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38581 states, 38580 states have (on average 1.0829445308449974) internal successors, (41780), 38580 states have internal predecessors, (41780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38581 states to 38581 states and 41780 transitions. [2024-10-10 23:19:10,797 INFO L78 Accepts]: Start accepts. Automaton has 38581 states and 41780 transitions. Word has length 882 [2024-10-10 23:19:10,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:10,798 INFO L471 AbstractCegarLoop]: Abstraction has 38581 states and 41780 transitions. [2024-10-10 23:19:10,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:10,798 INFO L276 IsEmpty]: Start isEmpty. Operand 38581 states and 41780 transitions. [2024-10-10 23:19:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2024-10-10 23:19:10,830 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:19:10,830 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:19:10,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-10 23:19:11,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-10 23:19:11,031 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:19:11,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:19:11,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2001046967, now seen corresponding path program 1 times [2024-10-10 23:19:11,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:19:11,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164458878] [2024-10-10 23:19:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:11,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:19:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2837 backedges. 1987 proven. 508 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-10-10 23:19:12,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:19:12,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164458878] [2024-10-10 23:19:12,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164458878] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:19:12,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115952326] [2024-10-10 23:19:12,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:12,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:19:12,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:19:12,767 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:19:12,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 23:19:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:13,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:19:13,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:19:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2837 backedges. 1924 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2024-10-10 23:19:13,124 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:19:13,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115952326] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:19:13,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:19:13,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-10-10 23:19:13,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163312437] [2024-10-10 23:19:13,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:19:13,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:19:13,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:19:13,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:19:13,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-10 23:19:13,126 INFO L87 Difference]: Start difference. First operand 38581 states and 41780 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:13,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:13,713 INFO L93 Difference]: Finished difference Result 85630 states and 92716 transitions. [2024-10-10 23:19:13,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:19:13,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 959 [2024-10-10 23:19:13,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:13,759 INFO L225 Difference]: With dead ends: 85630 [2024-10-10 23:19:13,759 INFO L226 Difference]: Without dead ends: 47418 [2024-10-10 23:19:13,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 960 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-10 23:19:13,788 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 74 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:13,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 321 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:19:13,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47418 states. [2024-10-10 23:19:14,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47418 to 38766. [2024-10-10 23:19:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38766 states, 38765 states have (on average 1.0812588675351478) internal successors, (41915), 38765 states have internal predecessors, (41915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:14,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38766 states to 38766 states and 41915 transitions. [2024-10-10 23:19:14,313 INFO L78 Accepts]: Start accepts. Automaton has 38766 states and 41915 transitions. Word has length 959 [2024-10-10 23:19:14,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:14,313 INFO L471 AbstractCegarLoop]: Abstraction has 38766 states and 41915 transitions. [2024-10-10 23:19:14,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:14,313 INFO L276 IsEmpty]: Start isEmpty. Operand 38766 states and 41915 transitions. [2024-10-10 23:19:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2024-10-10 23:19:14,344 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:19:14,344 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:19:14,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-10 23:19:14,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:19:14,545 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:19:14,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:19:14,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1191840472, now seen corresponding path program 1 times [2024-10-10 23:19:14,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:19:14,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162543340] [2024-10-10 23:19:14,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:14,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:19:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 1755 proven. 184 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2024-10-10 23:19:15,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:19:15,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162543340] [2024-10-10 23:19:15,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162543340] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:19:15,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640622958] [2024-10-10 23:19:15,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:15,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:19:15,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:19:15,815 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:19:15,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 23:19:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:16,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-10 23:19:16,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:19:16,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 1627 proven. 434 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2024-10-10 23:19:16,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:19:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 2061 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2024-10-10 23:19:16,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640622958] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 23:19:16,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 23:19:16,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 13 [2024-10-10 23:19:16,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705040114] [2024-10-10 23:19:16,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:19:16,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 23:19:16,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:19:16,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 23:19:16,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-10-10 23:19:16,887 INFO L87 Difference]: Start difference. First operand 38766 states and 41915 transitions. Second operand has 5 states, 5 states have (on average 115.0) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:17,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:17,869 INFO L93 Difference]: Finished difference Result 89323 states and 96633 transitions. [2024-10-10 23:19:17,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:19:17,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 965 [2024-10-10 23:19:17,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:17,921 INFO L225 Difference]: With dead ends: 89323 [2024-10-10 23:19:17,921 INFO L226 Difference]: Without dead ends: 52766 [2024-10-10 23:19:17,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1936 GetRequests, 1924 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-10-10 23:19:17,948 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 240 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:17,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 64 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 23:19:17,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52766 states. [2024-10-10 23:19:18,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52766 to 51662. [2024-10-10 23:19:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51662 states, 51661 states have (on average 1.0804475329552274) internal successors, (55817), 51661 states have internal predecessors, (55817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:18,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51662 states to 51662 states and 55817 transitions. [2024-10-10 23:19:18,558 INFO L78 Accepts]: Start accepts. Automaton has 51662 states and 55817 transitions. Word has length 965 [2024-10-10 23:19:18,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:18,559 INFO L471 AbstractCegarLoop]: Abstraction has 51662 states and 55817 transitions. [2024-10-10 23:19:18,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:18,559 INFO L276 IsEmpty]: Start isEmpty. Operand 51662 states and 55817 transitions. [2024-10-10 23:19:18,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2024-10-10 23:19:18,597 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:19:18,597 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:19:18,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-10 23:19:18,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-10 23:19:18,798 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:19:18,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:19:18,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1959748, now seen corresponding path program 1 times [2024-10-10 23:19:18,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:19:18,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91101102] [2024-10-10 23:19:18,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:18,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:19:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3153 backedges. 2055 proven. 0 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2024-10-10 23:19:19,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:19:19,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91101102] [2024-10-10 23:19:19,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91101102] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:19:19,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:19:19,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:19:19,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593188848] [2024-10-10 23:19:19,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:19:19,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:19:19,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:19:19,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:19:19,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:19:19,204 INFO L87 Difference]: Start difference. First operand 51662 states and 55817 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:19,738 INFO L93 Difference]: Finished difference Result 88215 states and 95383 transitions. [2024-10-10 23:19:19,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:19:19,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1023 [2024-10-10 23:19:19,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:19,774 INFO L225 Difference]: With dead ends: 88215 [2024-10-10 23:19:19,774 INFO L226 Difference]: Without dead ends: 39130 [2024-10-10 23:19:19,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:19:19,804 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 97 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:19,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 282 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 23:19:19,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39130 states. [2024-10-10 23:19:20,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39130 to 37467. [2024-10-10 23:19:20,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37467 states, 37466 states have (on average 1.0766294773928362) internal successors, (40337), 37466 states have internal predecessors, (40337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37467 states to 37467 states and 40337 transitions. [2024-10-10 23:19:20,163 INFO L78 Accepts]: Start accepts. Automaton has 37467 states and 40337 transitions. Word has length 1023 [2024-10-10 23:19:20,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:20,163 INFO L471 AbstractCegarLoop]: Abstraction has 37467 states and 40337 transitions. [2024-10-10 23:19:20,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:20,164 INFO L276 IsEmpty]: Start isEmpty. Operand 37467 states and 40337 transitions. [2024-10-10 23:19:20,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2024-10-10 23:19:20,193 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:19:20,193 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:19:20,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-10 23:19:20,194 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:19:20,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:19:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash 175313503, now seen corresponding path program 1 times [2024-10-10 23:19:20,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:19:20,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945955909] [2024-10-10 23:19:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:20,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:19:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3450 backedges. 2272 proven. 735 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2024-10-10 23:19:21,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:19:21,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945955909] [2024-10-10 23:19:21,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945955909] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:19:21,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928141498] [2024-10-10 23:19:21,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:19:21,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:19:21,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:19:21,696 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:19:21,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 23:19:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:19:21,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-10 23:19:21,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:19:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3450 backedges. 2063 proven. 221 refuted. 0 times theorem prover too weak. 1166 trivial. 0 not checked. [2024-10-10 23:19:22,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:19:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3450 backedges. 1928 proven. 192 refuted. 0 times theorem prover too weak. 1330 trivial. 0 not checked. [2024-10-10 23:19:23,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928141498] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 23:19:23,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 23:19:23,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 16 [2024-10-10 23:19:23,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980858165] [2024-10-10 23:19:23,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 23:19:23,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-10 23:19:23,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:19:23,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-10 23:19:23,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-10-10 23:19:23,802 INFO L87 Difference]: Start difference. First operand 37467 states and 40337 transitions. Second operand has 16 states, 16 states have (on average 103.25) internal successors, (1652), 16 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:30,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:19:30,684 INFO L93 Difference]: Finished difference Result 92223 states and 99191 transitions. [2024-10-10 23:19:30,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-10 23:19:30,685 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 103.25) internal successors, (1652), 16 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1077 [2024-10-10 23:19:30,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:19:30,688 INFO L225 Difference]: With dead ends: 92223 [2024-10-10 23:19:30,688 INFO L226 Difference]: Without dead ends: 0 [2024-10-10 23:19:30,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2196 GetRequests, 2165 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2024-10-10 23:19:30,722 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 1720 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 16179 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 16532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 16179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-10-10 23:19:30,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 358 Invalid, 16532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 16179 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-10-10 23:19:30,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-10 23:19:30,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-10 23:19:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:30,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-10 23:19:30,724 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1077 [2024-10-10 23:19:30,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:19:30,724 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-10 23:19:30,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 103.25) internal successors, (1652), 16 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:19:30,724 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-10 23:19:30,724 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-10 23:19:30,727 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-10 23:19:30,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-10 23:19:30,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:19:30,931 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:19:30,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.