./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label09.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 759500fc885fd8551afb1744440c02e812929b084934756d49ccfd6e6b033437 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 03:07:12,936 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:07:13,006 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:07:13,010 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:07:13,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:07:13,035 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:07:13,036 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:07:13,036 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:07:13,036 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:07:13,036 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:07:13,037 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:07:13,037 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:07:13,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:07:13,038 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:07:13,038 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:07:13,038 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:07:13,038 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:07:13,039 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:07:13,039 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:07:13,039 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:07:13,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:07:13,041 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:07:13,042 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:07:13,042 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:07:13,042 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:07:13,042 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:07:13,043 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:07:13,043 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:07:13,043 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:07:13,043 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:07:13,043 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:07:13,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:07:13,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:07:13,044 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:07:13,044 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:07:13,045 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:07:13,045 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:07:13,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:07:13,045 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:07:13,045 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:07:13,045 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:07:13,046 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:07:13,046 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 759500fc885fd8551afb1744440c02e812929b084934756d49ccfd6e6b033437 [2024-11-16 03:07:13,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:07:13,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:07:13,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:07:13,336 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:07:13,338 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:07:13,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label09.c [2024-11-16 03:07:14,726 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:07:15,008 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:07:15,009 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label09.c [2024-11-16 03:07:15,027 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160314ebf/aa8199015ff048b595a745f508847f99/FLAG8a1644673 [2024-11-16 03:07:15,041 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160314ebf/aa8199015ff048b595a745f508847f99 [2024-11-16 03:07:15,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:07:15,064 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:07:15,067 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:07:15,068 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:07:15,072 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:07:15,072 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:07:15" (1/1) ... [2024-11-16 03:07:15,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e069b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:15, skipping insertion in model container [2024-11-16 03:07:15,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:07:15" (1/1) ... [2024-11-16 03:07:15,131 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:07:15,541 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label09.c[54191,54204] [2024-11-16 03:07:15,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:07:15,598 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:07:15,719 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label09.c[54191,54204] [2024-11-16 03:07:15,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:07:15,747 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:07:15,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:15 WrapperNode [2024-11-16 03:07:15,748 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:07:15,749 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:07:15,749 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:07:15,749 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:07:15,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:15" (1/1) ... [2024-11-16 03:07:15,785 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:15" (1/1) ... [2024-11-16 03:07:15,875 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-16 03:07:15,876 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:07:15,877 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:07:15,877 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:07:15,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:07:15,889 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:15" (1/1) ... [2024-11-16 03:07:15,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:15" (1/1) ... [2024-11-16 03:07:15,900 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:15" (1/1) ... [2024-11-16 03:07:15,971 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 03:07:15,971 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:15" (1/1) ... [2024-11-16 03:07:15,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:15" (1/1) ... [2024-11-16 03:07:16,007 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:15" (1/1) ... [2024-11-16 03:07:16,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:15" (1/1) ... [2024-11-16 03:07:16,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:15" (1/1) ... [2024-11-16 03:07:16,017 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:15" (1/1) ... [2024-11-16 03:07:16,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 03:07:16,028 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 03:07:16,028 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 03:07:16,028 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 03:07:16,029 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:15" (1/1) ... [2024-11-16 03:07:16,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:07:16,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:16,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 03:07:16,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 03:07:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 03:07:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 03:07:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 03:07:16,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 03:07:16,160 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 03:07:16,162 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 03:07:17,541 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-16 03:07:17,541 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 03:07:17,555 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 03:07:17,556 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 03:07:17,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:07:17 BoogieIcfgContainer [2024-11-16 03:07:17,556 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 03:07:17,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 03:07:17,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 03:07:17,560 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 03:07:17,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:07:15" (1/3) ... [2024-11-16 03:07:17,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264462cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:07:17, skipping insertion in model container [2024-11-16 03:07:17,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:07:15" (2/3) ... [2024-11-16 03:07:17,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264462cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:07:17, skipping insertion in model container [2024-11-16 03:07:17,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:07:17" (3/3) ... [2024-11-16 03:07:17,562 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label09.c [2024-11-16 03:07:17,574 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 03:07:17,575 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 03:07:17,626 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 03:07:17,631 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;@6ccef601, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 03:07:17,631 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 03:07:17,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:17,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-16 03:07:17,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:17,648 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:17,649 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:17,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:17,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1789014576, now seen corresponding path program 1 times [2024-11-16 03:07:17,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:17,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477667568] [2024-11-16 03:07:17,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:17,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:18,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:18,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477667568] [2024-11-16 03:07:18,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477667568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:18,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:18,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:18,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018288515] [2024-11-16 03:07:18,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:18,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:18,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:18,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:18,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:18,428 INFO L87 Difference]: Start difference. First operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:19,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:19,322 INFO L93 Difference]: Finished difference Result 816 states and 1451 transitions. [2024-11-16 03:07:19,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:19,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2024-11-16 03:07:19,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:19,335 INFO L225 Difference]: With dead ends: 816 [2024-11-16 03:07:19,335 INFO L226 Difference]: Without dead ends: 447 [2024-11-16 03:07:19,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:19,340 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 106 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:19,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 235 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:07:19,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2024-11-16 03:07:19,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2024-11-16 03:07:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.4260089686098654) internal successors, (636), 446 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:19,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 636 transitions. [2024-11-16 03:07:19,385 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 636 transitions. Word has length 150 [2024-11-16 03:07:19,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:19,385 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 636 transitions. [2024-11-16 03:07:19,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:19,386 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 636 transitions. [2024-11-16 03:07:19,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-16 03:07:19,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:19,388 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:19,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 03:07:19,389 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:19,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:19,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2031319222, now seen corresponding path program 1 times [2024-11-16 03:07:19,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:19,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213882506] [2024-11-16 03:07:19,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:19,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:19,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:19,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:19,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213882506] [2024-11-16 03:07:19,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213882506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:19,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:19,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:19,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726903558] [2024-11-16 03:07:19,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:19,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:19,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:19,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:19,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:19,514 INFO L87 Difference]: Start difference. First operand 447 states and 636 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:20,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:20,224 INFO L93 Difference]: Finished difference Result 1320 states and 1886 transitions. [2024-11-16 03:07:20,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:20,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2024-11-16 03:07:20,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:20,228 INFO L225 Difference]: With dead ends: 1320 [2024-11-16 03:07:20,228 INFO L226 Difference]: Without dead ends: 875 [2024-11-16 03:07:20,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:20,230 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 247 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:20,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 97 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:07:20,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2024-11-16 03:07:20,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 861. [2024-11-16 03:07:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 860 states have (on average 1.3918604651162791) internal successors, (1197), 860 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:20,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1197 transitions. [2024-11-16 03:07:20,255 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1197 transitions. Word has length 159 [2024-11-16 03:07:20,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:20,255 INFO L471 AbstractCegarLoop]: Abstraction has 861 states and 1197 transitions. [2024-11-16 03:07:20,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:20,256 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1197 transitions. [2024-11-16 03:07:20,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-16 03:07:20,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:20,261 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:20,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 03:07:20,261 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:20,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:20,262 INFO L85 PathProgramCache]: Analyzing trace with hash -397148165, now seen corresponding path program 1 times [2024-11-16 03:07:20,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:20,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342764990] [2024-11-16 03:07:20,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:20,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 03:07:20,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:20,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342764990] [2024-11-16 03:07:20,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342764990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:07:20,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929763554] [2024-11-16 03:07:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:20,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:20,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:20,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:07:20,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 03:07:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:20,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:07:20,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:07:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 03:07:20,831 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:07:20,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929763554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:20,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:07:20,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-16 03:07:20,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740745152] [2024-11-16 03:07:20,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:20,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:20,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:20,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:20,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:20,834 INFO L87 Difference]: Start difference. First operand 861 states and 1197 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:21,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:21,217 INFO L93 Difference]: Finished difference Result 2577 states and 3585 transitions. [2024-11-16 03:07:21,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:21,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2024-11-16 03:07:21,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:21,222 INFO L225 Difference]: With dead ends: 2577 [2024-11-16 03:07:21,222 INFO L226 Difference]: Without dead ends: 1718 [2024-11-16 03:07:21,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:21,224 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 361 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:21,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 605 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 03:07:21,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2024-11-16 03:07:21,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1714. [2024-11-16 03:07:21,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1713 states have (on average 1.3917104495037944) internal successors, (2384), 1713 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:21,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2384 transitions. [2024-11-16 03:07:21,249 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2384 transitions. Word has length 173 [2024-11-16 03:07:21,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:21,249 INFO L471 AbstractCegarLoop]: Abstraction has 1714 states and 2384 transitions. [2024-11-16 03:07:21,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:21,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2384 transitions. [2024-11-16 03:07:21,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 03:07:21,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:21,252 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:21,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 03:07:21,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:21,457 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:21,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:21,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1128242073, now seen corresponding path program 1 times [2024-11-16 03:07:21,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:21,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910454129] [2024-11-16 03:07:21,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:21,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-16 03:07:21,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:21,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910454129] [2024-11-16 03:07:21,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910454129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:21,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:21,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:21,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226578232] [2024-11-16 03:07:21,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:21,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:21,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:21,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:21,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:21,590 INFO L87 Difference]: Start difference. First operand 1714 states and 2384 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:22,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:22,130 INFO L93 Difference]: Finished difference Result 3386 states and 4710 transitions. [2024-11-16 03:07:22,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:22,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2024-11-16 03:07:22,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:22,135 INFO L225 Difference]: With dead ends: 3386 [2024-11-16 03:07:22,135 INFO L226 Difference]: Without dead ends: 1674 [2024-11-16 03:07:22,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:22,138 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 327 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:22,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 33 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:07:22,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2024-11-16 03:07:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1674. [2024-11-16 03:07:22,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1673 states have (on average 1.350866706515242) internal successors, (2260), 1673 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:22,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2260 transitions. [2024-11-16 03:07:22,163 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2260 transitions. Word has length 181 [2024-11-16 03:07:22,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:22,164 INFO L471 AbstractCegarLoop]: Abstraction has 1674 states and 2260 transitions. [2024-11-16 03:07:22,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:22,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2260 transitions. [2024-11-16 03:07:22,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-16 03:07:22,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:22,167 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:22,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 03:07:22,168 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:22,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:22,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1145803340, now seen corresponding path program 1 times [2024-11-16 03:07:22,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:22,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306423275] [2024-11-16 03:07:22,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:22,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:07:22,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:22,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306423275] [2024-11-16 03:07:22,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306423275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:22,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:22,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:07:22,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751670339] [2024-11-16 03:07:22,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:22,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:22,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:22,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:22,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:22,287 INFO L87 Difference]: Start difference. First operand 1674 states and 2260 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:23,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:23,021 INFO L93 Difference]: Finished difference Result 4987 states and 6735 transitions. [2024-11-16 03:07:23,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:23,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 182 [2024-11-16 03:07:23,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:23,030 INFO L225 Difference]: With dead ends: 4987 [2024-11-16 03:07:23,030 INFO L226 Difference]: Without dead ends: 3315 [2024-11-16 03:07:23,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:23,034 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 246 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:23,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 332 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:07:23,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3315 states. [2024-11-16 03:07:23,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3315 to 3312. [2024-11-16 03:07:23,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3312 states, 3311 states have (on average 1.2666868015705226) internal successors, (4194), 3311 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:23,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 4194 transitions. [2024-11-16 03:07:23,108 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 4194 transitions. Word has length 182 [2024-11-16 03:07:23,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:23,109 INFO L471 AbstractCegarLoop]: Abstraction has 3312 states and 4194 transitions. [2024-11-16 03:07:23,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:23,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 4194 transitions. [2024-11-16 03:07:23,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-16 03:07:23,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:23,113 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:23,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 03:07:23,113 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:23,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:23,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1078845007, now seen corresponding path program 1 times [2024-11-16 03:07:23,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:23,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552206833] [2024-11-16 03:07:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:23,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:23,312 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-16 03:07:23,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:23,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552206833] [2024-11-16 03:07:23,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552206833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:23,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:23,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:07:23,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513741923] [2024-11-16 03:07:23,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:23,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:07:23,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:23,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:07:23,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:07:23,315 INFO L87 Difference]: Start difference. First operand 3312 states and 4194 transitions. Second operand has 4 states, 4 states have (on average 43.75) 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) [2024-11-16 03:07:24,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:24,452 INFO L93 Difference]: Finished difference Result 13229 states and 16755 transitions. [2024-11-16 03:07:24,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:07:24,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) 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 186 [2024-11-16 03:07:24,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:24,482 INFO L225 Difference]: With dead ends: 13229 [2024-11-16 03:07:24,482 INFO L226 Difference]: Without dead ends: 9919 [2024-11-16 03:07:24,488 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 [2024-11-16 03:07:24,490 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 563 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:24,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 72 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 03:07:24,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9919 states. [2024-11-16 03:07:24,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9919 to 9911. [2024-11-16 03:07:24,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9911 states, 9910 states have (on average 1.2612512613521696) internal successors, (12499), 9910 states have internal predecessors, (12499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:24,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9911 states to 9911 states and 12499 transitions. [2024-11-16 03:07:24,632 INFO L78 Accepts]: Start accepts. Automaton has 9911 states and 12499 transitions. Word has length 186 [2024-11-16 03:07:24,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:24,633 INFO L471 AbstractCegarLoop]: Abstraction has 9911 states and 12499 transitions. [2024-11-16 03:07:24,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) 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) [2024-11-16 03:07:24,634 INFO L276 IsEmpty]: Start isEmpty. Operand 9911 states and 12499 transitions. [2024-11-16 03:07:24,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-16 03:07:24,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:24,639 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:24,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 03:07:24,639 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:24,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:24,640 INFO L85 PathProgramCache]: Analyzing trace with hash -179983759, now seen corresponding path program 1 times [2024-11-16 03:07:24,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:24,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953170439] [2024-11-16 03:07:24,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:24,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:24,891 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 03:07:24,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:24,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953170439] [2024-11-16 03:07:24,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953170439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:24,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:24,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:07:24,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310511715] [2024-11-16 03:07:24,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:24,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:24,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:24,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:24,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:24,895 INFO L87 Difference]: Start difference. First operand 9911 states and 12499 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:25,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:25,551 INFO L93 Difference]: Finished difference Result 24731 states and 31995 transitions. [2024-11-16 03:07:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:25,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2024-11-16 03:07:25,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:25,589 INFO L225 Difference]: With dead ends: 24731 [2024-11-16 03:07:25,593 INFO L226 Difference]: Without dead ends: 14822 [2024-11-16 03:07:25,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:25,606 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 216 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:25,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 373 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:07:25,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14822 states. [2024-11-16 03:07:25,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14822 to 14807. [2024-11-16 03:07:25,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14807 states, 14806 states have (on average 1.210117519924355) internal successors, (17917), 14806 states have internal predecessors, (17917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:25,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 17917 transitions. [2024-11-16 03:07:25,877 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 17917 transitions. Word has length 189 [2024-11-16 03:07:25,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:25,877 INFO L471 AbstractCegarLoop]: Abstraction has 14807 states and 17917 transitions. [2024-11-16 03:07:25,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:25,877 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 17917 transitions. [2024-11-16 03:07:25,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-16 03:07:25,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:25,881 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:25,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 03:07:25,882 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:25,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:25,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1930580840, now seen corresponding path program 1 times [2024-11-16 03:07:25,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:25,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401280299] [2024-11-16 03:07:25,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:25,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:26,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:26,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401280299] [2024-11-16 03:07:26,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401280299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:07:26,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102305111] [2024-11-16 03:07:26,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:26,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:26,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:26,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:07:26,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 03:07:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:26,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:07:26,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:07:26,986 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:07:26,986 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:07:26,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102305111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:26,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:07:26,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 03:07:26,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993956931] [2024-11-16 03:07:26,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:26,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:26,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:26,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:26,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:07:26,989 INFO L87 Difference]: Start difference. First operand 14807 states and 17917 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:27,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:27,713 INFO L93 Difference]: Finished difference Result 43499 states and 52691 transitions. [2024-11-16 03:07:27,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:27,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 190 [2024-11-16 03:07:27,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:27,762 INFO L225 Difference]: With dead ends: 43499 [2024-11-16 03:07:27,762 INFO L226 Difference]: Without dead ends: 28694 [2024-11-16 03:07:27,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:07:27,786 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 103 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:27,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 323 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:07:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28694 states. [2024-11-16 03:07:28,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28694 to 28679. [2024-11-16 03:07:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28679 states, 28678 states have (on average 1.1725015691470815) internal successors, (33625), 28678 states have internal predecessors, (33625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:28,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28679 states to 28679 states and 33625 transitions. [2024-11-16 03:07:28,281 INFO L78 Accepts]: Start accepts. Automaton has 28679 states and 33625 transitions. Word has length 190 [2024-11-16 03:07:28,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:28,281 INFO L471 AbstractCegarLoop]: Abstraction has 28679 states and 33625 transitions. [2024-11-16 03:07:28,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:28,282 INFO L276 IsEmpty]: Start isEmpty. Operand 28679 states and 33625 transitions. [2024-11-16 03:07:28,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-16 03:07:28,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:28,290 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 03:07:28,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 03:07:28,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-16 03:07:28,491 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:28,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:28,492 INFO L85 PathProgramCache]: Analyzing trace with hash 2023748825, now seen corresponding path program 1 times [2024-11-16 03:07:28,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:28,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896837881] [2024-11-16 03:07:28,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:28,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:28,794 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:07:28,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:28,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896837881] [2024-11-16 03:07:28,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896837881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:28,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:28,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:28,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113746369] [2024-11-16 03:07:28,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:28,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:28,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:28,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:28,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:28,797 INFO L87 Difference]: Start difference. First operand 28679 states and 33625 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:29,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:29,526 INFO L93 Difference]: Finished difference Result 57371 states and 67275 transitions. [2024-11-16 03:07:29,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:29,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2024-11-16 03:07:29,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:29,571 INFO L225 Difference]: With dead ends: 57371 [2024-11-16 03:07:29,571 INFO L226 Difference]: Without dead ends: 28694 [2024-11-16 03:07:29,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:29,599 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 166 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:29,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 123 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:07:29,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28694 states. [2024-11-16 03:07:29,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28694 to 28679. [2024-11-16 03:07:29,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28679 states, 28678 states have (on average 1.145860938698654) internal successors, (32861), 28678 states have internal predecessors, (32861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:30,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28679 states to 28679 states and 32861 transitions. [2024-11-16 03:07:30,231 INFO L78 Accepts]: Start accepts. Automaton has 28679 states and 32861 transitions. Word has length 229 [2024-11-16 03:07:30,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:30,231 INFO L471 AbstractCegarLoop]: Abstraction has 28679 states and 32861 transitions. [2024-11-16 03:07:30,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:30,231 INFO L276 IsEmpty]: Start isEmpty. Operand 28679 states and 32861 transitions. [2024-11-16 03:07:30,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-16 03:07:30,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:30,244 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:30,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 03:07:30,244 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:30,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:30,244 INFO L85 PathProgramCache]: Analyzing trace with hash -336924262, now seen corresponding path program 1 times [2024-11-16 03:07:30,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:30,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300106635] [2024-11-16 03:07:30,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:30,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:30,632 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:07:30,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:30,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300106635] [2024-11-16 03:07:30,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300106635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:30,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:30,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:07:30,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37259571] [2024-11-16 03:07:30,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:30,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:07:30,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:30,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:07:30,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:07:30,634 INFO L87 Difference]: Start difference. First operand 28679 states and 32861 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:31,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:31,541 INFO L93 Difference]: Finished difference Result 79608 states and 91008 transitions. [2024-11-16 03:07:31,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:07:31,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 241 [2024-11-16 03:07:31,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:31,609 INFO L225 Difference]: With dead ends: 79608 [2024-11-16 03:07:31,609 INFO L226 Difference]: Without dead ends: 50931 [2024-11-16 03:07:31,634 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 [2024-11-16 03:07:31,635 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 426 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:31,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 66 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:07:31,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50931 states. [2024-11-16 03:07:32,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50931 to 50925. [2024-11-16 03:07:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50925 states, 50924 states have (on average 1.1140915874636714) internal successors, (56734), 50924 states have internal predecessors, (56734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:32,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50925 states to 50925 states and 56734 transitions. [2024-11-16 03:07:32,756 INFO L78 Accepts]: Start accepts. Automaton has 50925 states and 56734 transitions. Word has length 241 [2024-11-16 03:07:32,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:32,756 INFO L471 AbstractCegarLoop]: Abstraction has 50925 states and 56734 transitions. [2024-11-16 03:07:32,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:32,757 INFO L276 IsEmpty]: Start isEmpty. Operand 50925 states and 56734 transitions. [2024-11-16 03:07:32,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-16 03:07:32,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:32,768 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:32,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 03:07:32,768 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:32,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:32,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1056513434, now seen corresponding path program 1 times [2024-11-16 03:07:32,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:32,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479007730] [2024-11-16 03:07:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:32,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:07:33,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:33,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479007730] [2024-11-16 03:07:33,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479007730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:33,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:33,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:07:33,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868199530] [2024-11-16 03:07:33,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:33,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:33,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:33,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:33,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:33,154 INFO L87 Difference]: Start difference. First operand 50925 states and 56734 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:34,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:34,036 INFO L93 Difference]: Finished difference Result 107168 states and 119367 transitions. [2024-11-16 03:07:34,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:34,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 246 [2024-11-16 03:07:34,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:34,122 INFO L225 Difference]: With dead ends: 107168 [2024-11-16 03:07:34,123 INFO L226 Difference]: Without dead ends: 56245 [2024-11-16 03:07:34,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:34,167 INFO L432 NwaCegarLoop]: 363 mSDtfsCounter, 134 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:34,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 382 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:07:34,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56245 states. [2024-11-16 03:07:34,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56245 to 56239. [2024-11-16 03:07:34,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56239 states, 56238 states have (on average 1.110032362459547) internal successors, (62426), 56238 states have internal predecessors, (62426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:35,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56239 states to 56239 states and 62426 transitions. [2024-11-16 03:07:35,100 INFO L78 Accepts]: Start accepts. Automaton has 56239 states and 62426 transitions. Word has length 246 [2024-11-16 03:07:35,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:35,101 INFO L471 AbstractCegarLoop]: Abstraction has 56239 states and 62426 transitions. [2024-11-16 03:07:35,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:35,101 INFO L276 IsEmpty]: Start isEmpty. Operand 56239 states and 62426 transitions. [2024-11-16 03:07:35,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-16 03:07:35,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:35,114 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:35,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 03:07:35,115 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:35,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:35,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1906093591, now seen corresponding path program 1 times [2024-11-16 03:07:35,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:35,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58276399] [2024-11-16 03:07:35,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:35,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-16 03:07:35,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:35,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58276399] [2024-11-16 03:07:35,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58276399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:35,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:35,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:35,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247970242] [2024-11-16 03:07:35,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:35,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:35,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:35,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:35,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:35,557 INFO L87 Difference]: Start difference. First operand 56239 states and 62426 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:36,485 INFO L93 Difference]: Finished difference Result 139498 states and 154972 transitions. [2024-11-16 03:07:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:36,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 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 248 [2024-11-16 03:07:36,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:36,575 INFO L225 Difference]: With dead ends: 139498 [2024-11-16 03:07:36,575 INFO L226 Difference]: Without dead ends: 83261 [2024-11-16 03:07:36,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:36,610 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 157 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:36,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 154 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:07:36,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83261 states. [2024-11-16 03:07:37,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83261 to 75905. [2024-11-16 03:07:37,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75905 states, 75904 states have (on average 1.1187025716694772) internal successors, (84914), 75904 states have internal predecessors, (84914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75905 states to 75905 states and 84914 transitions. [2024-11-16 03:07:37,721 INFO L78 Accepts]: Start accepts. Automaton has 75905 states and 84914 transitions. Word has length 248 [2024-11-16 03:07:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:37,722 INFO L471 AbstractCegarLoop]: Abstraction has 75905 states and 84914 transitions. [2024-11-16 03:07:37,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 75905 states and 84914 transitions. [2024-11-16 03:07:37,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-16 03:07:37,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:37,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:37,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 03:07:37,739 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:37,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:37,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1723115992, now seen corresponding path program 1 times [2024-11-16 03:07:37,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:37,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328932059] [2024-11-16 03:07:37,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:37,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:37,982 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 03:07:37,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:37,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328932059] [2024-11-16 03:07:37,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328932059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:37,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:07:37,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:07:37,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094485103] [2024-11-16 03:07:37,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:37,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:37,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:37,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:37,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:37,984 INFO L87 Difference]: Start difference. First operand 75905 states and 84914 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:39,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:39,393 INFO L93 Difference]: Finished difference Result 199503 states and 223523 transitions. [2024-11-16 03:07:39,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:39,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 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 253 [2024-11-16 03:07:39,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:39,533 INFO L225 Difference]: With dead ends: 199503 [2024-11-16 03:07:39,533 INFO L226 Difference]: Without dead ends: 123600 [2024-11-16 03:07:39,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:07:39,600 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 203 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:39,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 165 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 03:07:39,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123600 states. [2024-11-16 03:07:41,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123600 to 123591. [2024-11-16 03:07:42,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123591 states, 123590 states have (on average 1.1200339833319848) internal successors, (138425), 123590 states have internal predecessors, (138425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:42,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123591 states to 123591 states and 138425 transitions. [2024-11-16 03:07:42,197 INFO L78 Accepts]: Start accepts. Automaton has 123591 states and 138425 transitions. Word has length 253 [2024-11-16 03:07:42,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:42,197 INFO L471 AbstractCegarLoop]: Abstraction has 123591 states and 138425 transitions. [2024-11-16 03:07:42,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:42,198 INFO L276 IsEmpty]: Start isEmpty. Operand 123591 states and 138425 transitions. [2024-11-16 03:07:42,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-16 03:07:42,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:42,220 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:42,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 03:07:42,220 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:42,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:42,220 INFO L85 PathProgramCache]: Analyzing trace with hash 524919594, now seen corresponding path program 1 times [2024-11-16 03:07:42,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:42,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018793303] [2024-11-16 03:07:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:42,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 114 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-16 03:07:43,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:43,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018793303] [2024-11-16 03:07:43,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018793303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:07:43,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552284389] [2024-11-16 03:07:43,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:43,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:43,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:43,799 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:07:43,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 03:07:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:43,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:07:43,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:07:44,015 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 03:07:44,015 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:07:44,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552284389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:44,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:07:44,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-16 03:07:44,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480814386] [2024-11-16 03:07:44,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:44,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:44,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:44,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:44,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:07:44,020 INFO L87 Difference]: Start difference. First operand 123591 states and 138425 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 2 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) [2024-11-16 03:07:45,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:45,446 INFO L93 Difference]: Finished difference Result 302402 states and 339698 transitions. [2024-11-16 03:07:45,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:45,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 2 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 256 [2024-11-16 03:07:45,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:45,686 INFO L225 Difference]: With dead ends: 302402 [2024-11-16 03:07:45,686 INFO L226 Difference]: Without dead ends: 178813 [2024-11-16 03:07:45,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:07:45,790 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 152 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:45,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 172 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:07:45,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178813 states. [2024-11-16 03:07:48,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178813 to 138695. [2024-11-16 03:07:48,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138695 states, 138694 states have (on average 1.1227161953653366) internal successors, (155714), 138694 states have internal predecessors, (155714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:48,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138695 states to 138695 states and 155714 transitions. [2024-11-16 03:07:48,555 INFO L78 Accepts]: Start accepts. Automaton has 138695 states and 155714 transitions. Word has length 256 [2024-11-16 03:07:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:48,558 INFO L471 AbstractCegarLoop]: Abstraction has 138695 states and 155714 transitions. [2024-11-16 03:07:48,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 2 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) [2024-11-16 03:07:48,558 INFO L276 IsEmpty]: Start isEmpty. Operand 138695 states and 155714 transitions. [2024-11-16 03:07:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-16 03:07:48,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:48,575 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:48,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 03:07:48,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:48,781 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:48,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:48,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1740314459, now seen corresponding path program 1 times [2024-11-16 03:07:48,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:48,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147893309] [2024-11-16 03:07:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:48,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:49,714 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 72 proven. 7 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 03:07:49,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:49,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147893309] [2024-11-16 03:07:49,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147893309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:07:49,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035522177] [2024-11-16 03:07:49,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:49,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:49,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:49,718 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:07:49,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 03:07:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:49,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:07:49,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:07:49,959 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-16 03:07:49,959 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:07:49,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035522177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:49,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:07:49,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-16 03:07:49,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163778701] [2024-11-16 03:07:49,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:49,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:49,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:49,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:49,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:49,961 INFO L87 Difference]: Start difference. First operand 138695 states and 155714 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:51,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:51,394 INFO L93 Difference]: Finished difference Result 276183 states and 310051 transitions. [2024-11-16 03:07:51,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:51,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 261 [2024-11-16 03:07:51,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:51,572 INFO L225 Difference]: With dead ends: 276183 [2024-11-16 03:07:51,573 INFO L226 Difference]: Without dead ends: 137490 [2024-11-16 03:07:51,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:51,624 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 175 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:51,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 102 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:07:51,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137490 states. [2024-11-16 03:07:53,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137490 to 134202. [2024-11-16 03:07:53,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134202 states, 134201 states have (on average 1.1086430056407925) internal successors, (148781), 134201 states have internal predecessors, (148781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134202 states to 134202 states and 148781 transitions. [2024-11-16 03:07:53,869 INFO L78 Accepts]: Start accepts. Automaton has 134202 states and 148781 transitions. Word has length 261 [2024-11-16 03:07:53,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:07:53,869 INFO L471 AbstractCegarLoop]: Abstraction has 134202 states and 148781 transitions. [2024-11-16 03:07:53,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:53,869 INFO L276 IsEmpty]: Start isEmpty. Operand 134202 states and 148781 transitions. [2024-11-16 03:07:53,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-16 03:07:53,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:07:53,888 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:07:53,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 03:07:54,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 03:07:54,093 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:07:54,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:07:54,094 INFO L85 PathProgramCache]: Analyzing trace with hash -191079468, now seen corresponding path program 1 times [2024-11-16 03:07:54,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:07:54,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958261244] [2024-11-16 03:07:54,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:54,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:07:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 103 proven. 7 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-16 03:07:54,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:07:54,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958261244] [2024-11-16 03:07:54,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958261244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:07:54,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403864326] [2024-11-16 03:07:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:07:54,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:07:54,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:07:54,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:07:54,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 03:07:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:07:54,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:07:54,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:07:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-16 03:07:54,824 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:07:54,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403864326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:07:54,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:07:54,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-16 03:07:54,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040447831] [2024-11-16 03:07:54,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:07:54,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:07:54,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:07:54,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:07:54,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:54,826 INFO L87 Difference]: Start difference. First operand 134202 states and 148781 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:07:56,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:07:56,114 INFO L93 Difference]: Finished difference Result 376465 states and 416867 transitions. [2024-11-16 03:07:56,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:07:56,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 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 283 [2024-11-16 03:07:56,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:07:56,443 INFO L225 Difference]: With dead ends: 376465 [2024-11-16 03:07:56,443 INFO L226 Difference]: Without dead ends: 242265 [2024-11-16 03:07:56,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:07:56,545 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 257 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 03:07:56,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 555 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 03:07:56,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242265 states. [2024-11-16 03:08:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242265 to 242262. [2024-11-16 03:08:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242262 states, 242261 states have (on average 1.105840395276169) internal successors, (267902), 242261 states have internal predecessors, (267902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:00,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242262 states to 242262 states and 267902 transitions. [2024-11-16 03:08:00,946 INFO L78 Accepts]: Start accepts. Automaton has 242262 states and 267902 transitions. Word has length 283 [2024-11-16 03:08:00,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:08:00,947 INFO L471 AbstractCegarLoop]: Abstraction has 242262 states and 267902 transitions. [2024-11-16 03:08:00,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:00,947 INFO L276 IsEmpty]: Start isEmpty. Operand 242262 states and 267902 transitions. [2024-11-16 03:08:00,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-16 03:08:00,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:08:00,973 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 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] [2024-11-16 03:08:00,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 03:08:01,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-16 03:08:01,175 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:08:01,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:08:01,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2042967965, now seen corresponding path program 1 times [2024-11-16 03:08:01,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:08:01,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536944764] [2024-11-16 03:08:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:08:01,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:08:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:08:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-16 03:08:01,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:08:01,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536944764] [2024-11-16 03:08:01,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536944764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:08:01,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:08:01,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:08:01,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063903306] [2024-11-16 03:08:01,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:08:01,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:08:01,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:08:01,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:08:01,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:08:01,430 INFO L87 Difference]: Start difference. First operand 242262 states and 267902 transitions. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:04,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:08:04,977 INFO L93 Difference]: Finished difference Result 629087 states and 691046 transitions. [2024-11-16 03:08:04,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:08:04,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 296 [2024-11-16 03:08:04,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:08:05,691 INFO L225 Difference]: With dead ends: 629087 [2024-11-16 03:08:05,692 INFO L226 Difference]: Without dead ends: 386827 [2024-11-16 03:08:05,871 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 [2024-11-16 03:08:05,872 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 445 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:08:05,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 441 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 03:08:06,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386827 states. [2024-11-16 03:08:11,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386827 to 378198. [2024-11-16 03:08:11,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378198 states, 378197 states have (on average 1.0936575382670937) internal successors, (413618), 378197 states have internal predecessors, (413618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378198 states to 378198 states and 413618 transitions. [2024-11-16 03:08:12,972 INFO L78 Accepts]: Start accepts. Automaton has 378198 states and 413618 transitions. Word has length 296 [2024-11-16 03:08:12,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:08:12,973 INFO L471 AbstractCegarLoop]: Abstraction has 378198 states and 413618 transitions. [2024-11-16 03:08:12,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:08:12,973 INFO L276 IsEmpty]: Start isEmpty. Operand 378198 states and 413618 transitions. [2024-11-16 03:08:13,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-16 03:08:13,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:08:13,014 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 03:08:13,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 03:08:13,014 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:08:13,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:08:13,015 INFO L85 PathProgramCache]: Analyzing trace with hash -364866584, now seen corresponding path program 1 times [2024-11-16 03:08:13,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:08:13,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931745445] [2024-11-16 03:08:13,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:08:13,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:08:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:08:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 03:08:13,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:08:13,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931745445] [2024-11-16 03:08:13,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931745445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:08:13,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:08:13,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:08:13,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364524690] [2024-11-16 03:08:13,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:08:13,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:08:13,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:08:13,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:08:13,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:08:13,267 INFO L87 Difference]: Start difference. First operand 378198 states and 413618 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)