./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label28.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label28.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 480af262cda4397eeb9e570da47990ce157a2b110ec643ba069b0968d8ba36a6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 21:21:55,314 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 21:21:55,373 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 21:21:55,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 21:21:55,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 21:21:55,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 21:21:55,410 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 21:21:55,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 21:21:55,411 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 21:21:55,412 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 21:21:55,412 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 21:21:55,412 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 21:21:55,413 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 21:21:55,413 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 21:21:55,413 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 21:21:55,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 21:21:55,414 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 21:21:55,414 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 21:21:55,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 21:21:55,415 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 21:21:55,415 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 21:21:55,416 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 21:21:55,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 21:21:55,417 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 21:21:55,417 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 21:21:55,418 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 21:21:55,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 21:21:55,418 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 21:21:55,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 21:21:55,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 21:21:55,419 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 21:21:55,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 21:21:55,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 21:21:55,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 21:21:55,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 21:21:55,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 21:21:55,421 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 21:21:55,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 21:21:55,421 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 21:21:55,422 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 21:21:55,422 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 21:21:55,423 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 21:21:55,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 480af262cda4397eeb9e570da47990ce157a2b110ec643ba069b0968d8ba36a6 [2024-11-21 21:21:55,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 21:21:55,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 21:21:55,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 21:21:55,739 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 21:21:55,739 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 21:21:55,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label28.c [2024-11-21 21:21:57,237 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 21:21:57,548 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 21:21:57,549 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label28.c [2024-11-21 21:21:57,572 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c424d1637/a31de3c9aa654ccca822bd2cdfff4084/FLAGad284e92b [2024-11-21 21:21:57,814 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c424d1637/a31de3c9aa654ccca822bd2cdfff4084 [2024-11-21 21:21:57,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 21:21:57,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 21:21:57,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 21:21:57,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 21:21:57,825 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 21:21:57,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:21:57" (1/1) ... [2024-11-21 21:21:57,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb3c47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:21:57, skipping insertion in model container [2024-11-21 21:21:57,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:21:57" (1/1) ... [2024-11-21 21:21:57,890 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 21:21:58,450 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_label28.c[54731,54744] [2024-11-21 21:21:58,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 21:21:58,535 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 21:21:58,694 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_label28.c[54731,54744] [2024-11-21 21:21:58,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 21:21:58,738 INFO L204 MainTranslator]: Completed translation [2024-11-21 21:21:58,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:21:58 WrapperNode [2024-11-21 21:21:58,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 21:21:58,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 21:21:58,741 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 21:21:58,741 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 21:21:58,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:21:58" (1/1) ... [2024-11-21 21:21:58,791 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:21:58" (1/1) ... [2024-11-21 21:21:58,884 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-11-21 21:21:58,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 21:21:58,885 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 21:21:58,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 21:21:58,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 21:21:58,896 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:21:58" (1/1) ... [2024-11-21 21:21:58,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:21:58" (1/1) ... [2024-11-21 21:21:58,937 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:21:58" (1/1) ... [2024-11-21 21:21:58,976 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]. [2024-11-21 21:21:58,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:21:58" (1/1) ... [2024-11-21 21:21:58,977 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:21:58" (1/1) ... [2024-11-21 21:21:59,016 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:21:58" (1/1) ... [2024-11-21 21:21:59,033 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:21:58" (1/1) ... [2024-11-21 21:21:59,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:21:58" (1/1) ... [2024-11-21 21:21:59,071 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:21:58" (1/1) ... [2024-11-21 21:21:59,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 21:21:59,088 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 21:21:59,088 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 21:21:59,088 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 21:21:59,089 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:21:58" (1/1) ... [2024-11-21 21:21:59,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 21:21:59,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:21:59,131 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) [2024-11-21 21:21:59,138 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 [2024-11-21 21:21:59,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 21:21:59,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 21:21:59,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 21:21:59,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 21:21:59,398 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 21:21:59,402 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 21:22:01,338 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-21 21:22:01,339 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 21:22:01,366 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 21:22:01,370 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-21 21:22:01,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:22:01 BoogieIcfgContainer [2024-11-21 21:22:01,371 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 21:22:01,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 21:22:01,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 21:22:01,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 21:22:01,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:21:57" (1/3) ... [2024-11-21 21:22:01,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289a696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:22:01, skipping insertion in model container [2024-11-21 21:22:01,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:21:58" (2/3) ... [2024-11-21 21:22:01,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289a696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:22:01, skipping insertion in model container [2024-11-21 21:22:01,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:22:01" (3/3) ... [2024-11-21 21:22:01,380 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label28.c [2024-11-21 21:22:01,396 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 21:22:01,396 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 21:22:01,473 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 21:22:01,481 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;@65265f30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 21:22:01,481 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 21:22:01,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:01,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-21 21:22:01,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:01,505 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, 1, 1] [2024-11-21 21:22:01,506 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:01,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:01,511 INFO L85 PathProgramCache]: Analyzing trace with hash 697342114, now seen corresponding path program 1 times [2024-11-21 21:22:01,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:01,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430146691] [2024-11-21 21:22:01,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:01,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:22:02,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:02,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430146691] [2024-11-21 21:22:02,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430146691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:02,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:22:02,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 21:22:02,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929294031] [2024-11-21 21:22:02,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:02,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:02,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:02,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:02,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:22:02,570 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:03,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:03,625 INFO L93 Difference]: Finished difference Result 823 states and 1459 transitions. [2024-11-21 21:22:03,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:03,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2024-11-21 21:22:03,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:03,643 INFO L225 Difference]: With dead ends: 823 [2024-11-21 21:22:03,644 INFO L226 Difference]: Without dead ends: 444 [2024-11-21 21:22:03,649 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 [2024-11-21 21:22:03,652 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 79 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:03,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 244 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-21 21:22:03,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-21 21:22:03,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 443. [2024-11-21 21:22:03,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.420814479638009) internal successors, (628), 442 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:03,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 628 transitions. [2024-11-21 21:22:03,723 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 628 transitions. Word has length 152 [2024-11-21 21:22:03,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:03,724 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 628 transitions. [2024-11-21 21:22:03,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:03,725 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 628 transitions. [2024-11-21 21:22:03,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-21 21:22:03,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:03,729 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-11-21 21:22:03,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 21:22:03,730 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:03,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:03,731 INFO L85 PathProgramCache]: Analyzing trace with hash 233587009, now seen corresponding path program 1 times [2024-11-21 21:22:03,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:03,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722234128] [2024-11-21 21:22:03,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:03,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:22:04,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:04,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722234128] [2024-11-21 21:22:04,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722234128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:04,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:22:04,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 21:22:04,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620269306] [2024-11-21 21:22:04,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:04,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:04,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:04,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:04,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:22:04,041 INFO L87 Difference]: Start difference. First operand 443 states and 628 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:04,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:04,851 INFO L93 Difference]: Finished difference Result 1310 states and 1864 transitions. [2024-11-21 21:22:04,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:04,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2024-11-21 21:22:04,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:04,858 INFO L225 Difference]: With dead ends: 1310 [2024-11-21 21:22:04,859 INFO L226 Difference]: Without dead ends: 869 [2024-11-21 21:22:04,860 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 [2024-11-21 21:22:04,862 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:04,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-21 21:22:04,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2024-11-21 21:22:04,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 855. [2024-11-21 21:22:04,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.3875878220140516) internal successors, (1185), 854 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:04,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1185 transitions. [2024-11-21 21:22:04,898 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1185 transitions. Word has length 160 [2024-11-21 21:22:04,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:04,898 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1185 transitions. [2024-11-21 21:22:04,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1185 transitions. [2024-11-21 21:22:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-21 21:22:04,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:04,907 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:22:04,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 21:22:04,907 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:04,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:04,908 INFO L85 PathProgramCache]: Analyzing trace with hash 164471735, now seen corresponding path program 1 times [2024-11-21 21:22:04,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:04,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785811826] [2024-11-21 21:22:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:04,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:22:05,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:05,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785811826] [2024-11-21 21:22:05,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785811826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:05,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:22:05,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 21:22:05,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949177361] [2024-11-21 21:22:05,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:05,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:05,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:05,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:05,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:22:05,126 INFO L87 Difference]: Start difference. First operand 855 states and 1185 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:05,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:05,875 INFO L93 Difference]: Finished difference Result 2540 states and 3520 transitions. [2024-11-21 21:22:05,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:05,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2024-11-21 21:22:05,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:05,882 INFO L225 Difference]: With dead ends: 2540 [2024-11-21 21:22:05,882 INFO L226 Difference]: Without dead ends: 1687 [2024-11-21 21:22:05,884 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 [2024-11-21 21:22:05,885 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 252 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:05,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 137 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 21:22:05,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2024-11-21 21:22:05,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1684. [2024-11-21 21:22:05,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.3309566250742721) internal successors, (2240), 1683 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:05,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2240 transitions. [2024-11-21 21:22:05,919 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2240 transitions. Word has length 164 [2024-11-21 21:22:05,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:05,920 INFO L471 AbstractCegarLoop]: Abstraction has 1684 states and 2240 transitions. [2024-11-21 21:22:05,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:05,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2240 transitions. [2024-11-21 21:22:05,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-21 21:22:05,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:05,926 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:22:05,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 21:22:05,927 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:05,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:05,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1893323554, now seen corresponding path program 1 times [2024-11-21 21:22:05,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:05,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290707912] [2024-11-21 21:22:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:05,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:22:06,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:06,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290707912] [2024-11-21 21:22:06,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290707912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:06,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:22:06,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 21:22:06,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880091661] [2024-11-21 21:22:06,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:06,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:06,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:06,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:06,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:22:06,118 INFO L87 Difference]: Start difference. First operand 1684 states and 2240 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:06,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:06,964 INFO L93 Difference]: Finished difference Result 5007 states and 6662 transitions. [2024-11-21 21:22:06,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:06,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2024-11-21 21:22:06,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:06,974 INFO L225 Difference]: With dead ends: 5007 [2024-11-21 21:22:06,975 INFO L226 Difference]: Without dead ends: 3325 [2024-11-21 21:22:06,978 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 [2024-11-21 21:22:06,983 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 243 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:06,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 223 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-21 21:22:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2024-11-21 21:22:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 3320. [2024-11-21 21:22:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 3319 states have (on average 1.2841217234106659) internal successors, (4262), 3319 states have internal predecessors, (4262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:07,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 4262 transitions. [2024-11-21 21:22:07,045 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 4262 transitions. Word has length 165 [2024-11-21 21:22:07,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:07,046 INFO L471 AbstractCegarLoop]: Abstraction has 3320 states and 4262 transitions. [2024-11-21 21:22:07,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:07,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 4262 transitions. [2024-11-21 21:22:07,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-21 21:22:07,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:07,051 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:22:07,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 21:22:07,052 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:07,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:07,052 INFO L85 PathProgramCache]: Analyzing trace with hash 651701228, now seen corresponding path program 1 times [2024-11-21 21:22:07,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:07,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123870247] [2024-11-21 21:22:07,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:07,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:07,323 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-21 21:22:07,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:07,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123870247] [2024-11-21 21:22:07,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123870247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:07,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:22:07,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 21:22:07,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278670732] [2024-11-21 21:22:07,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:07,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:07,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:07,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:07,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:22:07,328 INFO L87 Difference]: Start difference. First operand 3320 states and 4262 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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) [2024-11-21 21:22:08,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:08,097 INFO L93 Difference]: Finished difference Result 6636 states and 8519 transitions. [2024-11-21 21:22:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:08,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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 167 [2024-11-21 21:22:08,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:08,113 INFO L225 Difference]: With dead ends: 6636 [2024-11-21 21:22:08,113 INFO L226 Difference]: Without dead ends: 3318 [2024-11-21 21:22:08,118 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 [2024-11-21 21:22:08,120 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 126 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:08,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 344 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 21:22:08,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3318 states. [2024-11-21 21:22:08,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3318 to 3315. [2024-11-21 21:22:08,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 3314 states have (on average 1.219674109837055) internal successors, (4042), 3314 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:08,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 4042 transitions. [2024-11-21 21:22:08,191 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 4042 transitions. Word has length 167 [2024-11-21 21:22:08,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:08,191 INFO L471 AbstractCegarLoop]: Abstraction has 3315 states and 4042 transitions. [2024-11-21 21:22:08,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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) [2024-11-21 21:22:08,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 4042 transitions. [2024-11-21 21:22:08,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-21 21:22:08,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:08,198 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:22:08,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-21 21:22:08,199 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:08,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:08,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1455733754, now seen corresponding path program 1 times [2024-11-21 21:22:08,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:08,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484280852] [2024-11-21 21:22:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:08,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-21 21:22:08,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:08,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484280852] [2024-11-21 21:22:08,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484280852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:08,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:22:08,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 21:22:08,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194357128] [2024-11-21 21:22:08,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:08,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:08,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:08,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:08,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:22:08,578 INFO L87 Difference]: Start difference. First operand 3315 states and 4042 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:09,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:09,406 INFO L93 Difference]: Finished difference Result 8266 states and 10307 transitions. [2024-11-21 21:22:09,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:09,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2024-11-21 21:22:09,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:09,429 INFO L225 Difference]: With dead ends: 8266 [2024-11-21 21:22:09,430 INFO L226 Difference]: Without dead ends: 4953 [2024-11-21 21:22:09,435 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 [2024-11-21 21:22:09,436 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 216 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:09,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 369 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-21 21:22:09,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2024-11-21 21:22:09,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 4948. [2024-11-21 21:22:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4948 states, 4947 states have (on average 1.2173034162118455) internal successors, (6022), 4947 states have internal predecessors, (6022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:09,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 6022 transitions. [2024-11-21 21:22:09,546 INFO L78 Accepts]: Start accepts. Automaton has 4948 states and 6022 transitions. Word has length 173 [2024-11-21 21:22:09,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:09,546 INFO L471 AbstractCegarLoop]: Abstraction has 4948 states and 6022 transitions. [2024-11-21 21:22:09,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:09,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4948 states and 6022 transitions. [2024-11-21 21:22:09,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-21 21:22:09,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:09,555 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-11-21 21:22:09,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-21 21:22:09,556 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:09,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:09,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1109508564, now seen corresponding path program 1 times [2024-11-21 21:22:09,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:09,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578434200] [2024-11-21 21:22:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:09,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:09,918 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-21 21:22:09,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:09,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578434200] [2024-11-21 21:22:09,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578434200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:09,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:22:09,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 21:22:09,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713535642] [2024-11-21 21:22:09,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:09,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:09,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:09,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:09,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:22:09,921 INFO L87 Difference]: Start difference. First operand 4948 states and 6022 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:10,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:10,747 INFO L93 Difference]: Finished difference Result 11938 states and 14513 transitions. [2024-11-21 21:22:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:10,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2024-11-21 21:22:10,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:10,772 INFO L225 Difference]: With dead ends: 11938 [2024-11-21 21:22:10,772 INFO L226 Difference]: Without dead ends: 6992 [2024-11-21 21:22:10,833 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 [2024-11-21 21:22:10,834 INFO L432 NwaCegarLoop]: 349 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:10,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 370 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-21 21:22:10,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6992 states. [2024-11-21 21:22:10,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6992 to 6978. [2024-11-21 21:22:10,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6978 states, 6977 states have (on average 1.1843199082700302) internal successors, (8263), 6977 states have internal predecessors, (8263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:10,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6978 states to 6978 states and 8263 transitions. [2024-11-21 21:22:10,956 INFO L78 Accepts]: Start accepts. Automaton has 6978 states and 8263 transitions. Word has length 180 [2024-11-21 21:22:10,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:10,957 INFO L471 AbstractCegarLoop]: Abstraction has 6978 states and 8263 transitions. [2024-11-21 21:22:10,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:10,957 INFO L276 IsEmpty]: Start isEmpty. Operand 6978 states and 8263 transitions. [2024-11-21 21:22:10,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-21 21:22:10,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:10,966 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:22:10,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-21 21:22:10,967 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:10,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:10,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1341529967, now seen corresponding path program 1 times [2024-11-21 21:22:10,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:10,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338193827] [2024-11-21 21:22:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:10,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:22:11,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:11,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338193827] [2024-11-21 21:22:11,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338193827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:11,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:22:11,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 21:22:11,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645271174] [2024-11-21 21:22:11,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:11,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:22:11,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:11,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:22:11,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:22:11,286 INFO L87 Difference]: Start difference. First operand 6978 states and 8263 transitions. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:12,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:12,587 INFO L93 Difference]: Finished difference Result 13980 states and 16575 transitions. [2024-11-21 21:22:12,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:22:12,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2024-11-21 21:22:12,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:12,610 INFO L225 Difference]: With dead ends: 13980 [2024-11-21 21:22:12,614 INFO L226 Difference]: Without dead ends: 7004 [2024-11-21 21:22:12,624 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 [2024-11-21 21:22:12,626 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 447 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:12,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 159 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-21 21:22:12,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7004 states. [2024-11-21 21:22:12,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7004 to 6572. [2024-11-21 21:22:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6572 states, 6571 states have (on average 1.18201187033937) internal successors, (7767), 6571 states have internal predecessors, (7767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:12,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6572 states to 6572 states and 7767 transitions. [2024-11-21 21:22:12,753 INFO L78 Accepts]: Start accepts. Automaton has 6572 states and 7767 transitions. Word has length 196 [2024-11-21 21:22:12,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:12,754 INFO L471 AbstractCegarLoop]: Abstraction has 6572 states and 7767 transitions. [2024-11-21 21:22:12,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:12,759 INFO L276 IsEmpty]: Start isEmpty. Operand 6572 states and 7767 transitions. [2024-11-21 21:22:12,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-21 21:22:12,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:12,770 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:22:12,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-21 21:22:12,771 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:12,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:12,771 INFO L85 PathProgramCache]: Analyzing trace with hash 221221588, now seen corresponding path program 1 times [2024-11-21 21:22:12,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:12,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119872513] [2024-11-21 21:22:12,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:12,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-21 21:22:13,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:13,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119872513] [2024-11-21 21:22:13,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119872513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:13,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:22:13,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 21:22:13,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707526753] [2024-11-21 21:22:13,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:13,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:13,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:13,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:13,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:22:13,074 INFO L87 Difference]: Start difference. First operand 6572 states and 7767 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) [2024-11-21 21:22:13,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:13,862 INFO L93 Difference]: Finished difference Result 17043 states and 20056 transitions. [2024-11-21 21:22:13,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:13,862 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 199 [2024-11-21 21:22:13,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:13,878 INFO L225 Difference]: With dead ends: 17043 [2024-11-21 21:22:13,878 INFO L226 Difference]: Without dead ends: 10473 [2024-11-21 21:22:13,888 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 [2024-11-21 21:22:13,889 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 220 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:13,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 203 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 21:22:13,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10473 states. [2024-11-21 21:22:14,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10473 to 10469. [2024-11-21 21:22:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10469 states, 10468 states have (on average 1.1720481467329003) internal successors, (12269), 10468 states have internal predecessors, (12269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:14,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10469 states to 10469 states and 12269 transitions. [2024-11-21 21:22:14,039 INFO L78 Accepts]: Start accepts. Automaton has 10469 states and 12269 transitions. Word has length 199 [2024-11-21 21:22:14,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:14,040 INFO L471 AbstractCegarLoop]: Abstraction has 10469 states and 12269 transitions. [2024-11-21 21:22:14,040 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) [2024-11-21 21:22:14,040 INFO L276 IsEmpty]: Start isEmpty. Operand 10469 states and 12269 transitions. [2024-11-21 21:22:14,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-21 21:22:14,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:14,054 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:22:14,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-21 21:22:14,054 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:14,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:14,058 INFO L85 PathProgramCache]: Analyzing trace with hash 399462554, now seen corresponding path program 1 times [2024-11-21 21:22:14,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:14,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865360491] [2024-11-21 21:22:14,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:14,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:14,578 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-21 21:22:14,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:14,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865360491] [2024-11-21 21:22:14,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865360491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:22:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794486906] [2024-11-21 21:22:14,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:14,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:22:14,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:22:14,583 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) [2024-11-21 21:22:14,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 21:22:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:14,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:22:14,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:22:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-21 21:22:14,988 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:22:14,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794486906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:14,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:22:14,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-21 21:22:14,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232481102] [2024-11-21 21:22:14,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:14,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:14,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:14,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:14,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:22:14,990 INFO L87 Difference]: Start difference. First operand 10469 states and 12269 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:15,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:15,730 INFO L93 Difference]: Finished difference Result 20958 states and 24579 transitions. [2024-11-21 21:22:15,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:15,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 203 [2024-11-21 21:22:15,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:15,748 INFO L225 Difference]: With dead ends: 20958 [2024-11-21 21:22:15,749 INFO L226 Difference]: Without dead ends: 10491 [2024-11-21 21:22:15,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:22:15,760 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 86 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:15,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 373 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 21:22:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10491 states. [2024-11-21 21:22:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10491 to 10469. [2024-11-21 21:22:15,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10469 states, 10468 states have (on average 1.1666985097439817) internal successors, (12213), 10468 states have internal predecessors, (12213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10469 states to 10469 states and 12213 transitions. [2024-11-21 21:22:15,899 INFO L78 Accepts]: Start accepts. Automaton has 10469 states and 12213 transitions. Word has length 203 [2024-11-21 21:22:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:15,899 INFO L471 AbstractCegarLoop]: Abstraction has 10469 states and 12213 transitions. [2024-11-21 21:22:15,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:15,900 INFO L276 IsEmpty]: Start isEmpty. Operand 10469 states and 12213 transitions. [2024-11-21 21:22:15,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-21 21:22:15,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:15,915 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-21 21:22:15,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 21:22:16,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-21 21:22:16,116 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:16,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:16,117 INFO L85 PathProgramCache]: Analyzing trace with hash 907441742, now seen corresponding path program 1 times [2024-11-21 21:22:16,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:16,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662344915] [2024-11-21 21:22:16,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:16,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:16,493 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 79 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-21 21:22:16,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:16,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662344915] [2024-11-21 21:22:16,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662344915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:22:16,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776665339] [2024-11-21 21:22:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:16,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:22:16,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:22:16,497 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) [2024-11-21 21:22:16,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 21:22:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:16,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:22:16,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:22:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-21 21:22:16,673 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:22:16,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776665339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:16,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:22:16,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-21 21:22:16,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152282427] [2024-11-21 21:22:16,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:16,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:16,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:16,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:16,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:22:16,676 INFO L87 Difference]: Start difference. First operand 10469 states and 12213 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:17,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:17,336 INFO L93 Difference]: Finished difference Result 27032 states and 31942 transitions. [2024-11-21 21:22:17,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:17,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2024-11-21 21:22:17,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:17,368 INFO L225 Difference]: With dead ends: 27032 [2024-11-21 21:22:17,368 INFO L226 Difference]: Without dead ends: 16565 [2024-11-21 21:22:17,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:22:17,384 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 230 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:17,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 407 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 21:22:17,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16565 states. [2024-11-21 21:22:17,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16565 to 16356. [2024-11-21 21:22:17,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16356 states, 16355 states have (on average 1.1331091409354936) internal successors, (18532), 16355 states have internal predecessors, (18532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:17,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16356 states to 16356 states and 18532 transitions. [2024-11-21 21:22:17,597 INFO L78 Accepts]: Start accepts. Automaton has 16356 states and 18532 transitions. Word has length 227 [2024-11-21 21:22:17,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:17,597 INFO L471 AbstractCegarLoop]: Abstraction has 16356 states and 18532 transitions. [2024-11-21 21:22:17,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:17,598 INFO L276 IsEmpty]: Start isEmpty. Operand 16356 states and 18532 transitions. [2024-11-21 21:22:17,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-21 21:22:17,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:17,617 INFO L215 NwaCegarLoop]: trace histogram [5, 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, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:22:17,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 21:22:17,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-21 21:22:17,818 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:17,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:17,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1333067857, now seen corresponding path program 1 times [2024-11-21 21:22:17,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:17,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530954390] [2024-11-21 21:22:17,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:17,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 93 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-21 21:22:18,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:18,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530954390] [2024-11-21 21:22:18,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530954390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:22:18,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965837006] [2024-11-21 21:22:18,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:18,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:22:18,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:22:18,362 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) [2024-11-21 21:22:18,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 21:22:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:18,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 21:22:18,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:22:18,799 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 93 proven. 26 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-21 21:22:18,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 21:22:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 93 proven. 26 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-21 21:22:19,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965837006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 21:22:19,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 21:22:19,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 6 [2024-11-21 21:22:19,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245680285] [2024-11-21 21:22:19,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 21:22:19,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-21 21:22:19,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:19,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-21 21:22:19,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:22:19,016 INFO L87 Difference]: Start difference. First operand 16356 states and 18532 transitions. Second operand has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:22,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:22,884 INFO L93 Difference]: Finished difference Result 73989 states and 84844 transitions. [2024-11-21 21:22:22,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-21 21:22:22,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2024-11-21 21:22:22,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:22,985 INFO L225 Difference]: With dead ends: 73989 [2024-11-21 21:22:22,987 INFO L226 Difference]: Without dead ends: 57631 [2024-11-21 21:22:23,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-11-21 21:22:23,056 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 2822 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 4274 mSolverCounterSat, 1068 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2822 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 5342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1068 IncrementalHoareTripleChecker+Valid, 4274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:23,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2822 Valid, 353 Invalid, 5342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1068 Valid, 4274 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-21 21:22:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57631 states. [2024-11-21 21:22:23,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57631 to 56756. [2024-11-21 21:22:23,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56756 states, 56755 states have (on average 1.1076557131530262) internal successors, (62865), 56755 states have internal predecessors, (62865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:23,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56756 states to 56756 states and 62865 transitions. [2024-11-21 21:22:23,951 INFO L78 Accepts]: Start accepts. Automaton has 56756 states and 62865 transitions. Word has length 237 [2024-11-21 21:22:23,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:23,952 INFO L471 AbstractCegarLoop]: Abstraction has 56756 states and 62865 transitions. [2024-11-21 21:22:23,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:23,952 INFO L276 IsEmpty]: Start isEmpty. Operand 56756 states and 62865 transitions. [2024-11-21 21:22:23,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-21 21:22:23,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:23,991 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, 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] [2024-11-21 21:22:24,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-21 21:22:24,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:22:24,192 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:24,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:24,193 INFO L85 PathProgramCache]: Analyzing trace with hash -402979636, now seen corresponding path program 1 times [2024-11-21 21:22:24,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:24,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036515920] [2024-11-21 21:22:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:24,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:22:24,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:24,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036515920] [2024-11-21 21:22:24,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036515920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:24,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:22:24,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 21:22:24,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234666780] [2024-11-21 21:22:24,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:24,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:24,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:24,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:24,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:22:24,547 INFO L87 Difference]: Start difference. First operand 56756 states and 62865 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:25,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:25,255 INFO L93 Difference]: Finished difference Result 106444 states and 118100 transitions. [2024-11-21 21:22:25,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:25,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 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 245 [2024-11-21 21:22:25,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:25,325 INFO L225 Difference]: With dead ends: 106444 [2024-11-21 21:22:25,325 INFO L226 Difference]: Without dead ends: 49690 [2024-11-21 21:22:25,376 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 [2024-11-21 21:22:25,377 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 249 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:25,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-21 21:22:25,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49690 states. [2024-11-21 21:22:26,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49690 to 49690. [2024-11-21 21:22:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49690 states, 49689 states have (on average 1.0986938759081486) internal successors, (54593), 49689 states have internal predecessors, (54593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:26,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49690 states to 49690 states and 54593 transitions. [2024-11-21 21:22:26,300 INFO L78 Accepts]: Start accepts. Automaton has 49690 states and 54593 transitions. Word has length 245 [2024-11-21 21:22:26,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:26,300 INFO L471 AbstractCegarLoop]: Abstraction has 49690 states and 54593 transitions. [2024-11-21 21:22:26,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:26,301 INFO L276 IsEmpty]: Start isEmpty. Operand 49690 states and 54593 transitions. [2024-11-21 21:22:26,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-21 21:22:26,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:26,326 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 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, 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] [2024-11-21 21:22:26,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-21 21:22:26,326 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:26,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:26,327 INFO L85 PathProgramCache]: Analyzing trace with hash -879094002, now seen corresponding path program 1 times [2024-11-21 21:22:26,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:26,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889310762] [2024-11-21 21:22:26,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:26,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-21 21:22:26,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:26,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889310762] [2024-11-21 21:22:26,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889310762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:26,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:22:26,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 21:22:26,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388888292] [2024-11-21 21:22:26,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:26,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:22:26,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:26,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:22:26,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:22:26,810 INFO L87 Difference]: Start difference. First operand 49690 states and 54593 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:27,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:27,571 INFO L93 Difference]: Finished difference Result 98968 states and 108748 transitions. [2024-11-21 21:22:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:22:27,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2024-11-21 21:22:27,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:27,620 INFO L225 Difference]: With dead ends: 98968 [2024-11-21 21:22:27,620 INFO L226 Difference]: Without dead ends: 49280 [2024-11-21 21:22:27,656 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 [2024-11-21 21:22:27,657 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 463 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:27,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 54 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 21:22:27,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49280 states. [2024-11-21 21:22:28,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49280 to 48062. [2024-11-21 21:22:28,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48062 states, 48061 states have (on average 1.0935893968082229) internal successors, (52559), 48061 states have internal predecessors, (52559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:28,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48062 states to 48062 states and 52559 transitions. [2024-11-21 21:22:28,434 INFO L78 Accepts]: Start accepts. Automaton has 48062 states and 52559 transitions. Word has length 254 [2024-11-21 21:22:28,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:28,434 INFO L471 AbstractCegarLoop]: Abstraction has 48062 states and 52559 transitions. [2024-11-21 21:22:28,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:28,435 INFO L276 IsEmpty]: Start isEmpty. Operand 48062 states and 52559 transitions. [2024-11-21 21:22:28,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-21 21:22:28,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:28,459 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 21:22:28,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-21 21:22:28,459 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:28,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:28,460 INFO L85 PathProgramCache]: Analyzing trace with hash -170040178, now seen corresponding path program 1 times [2024-11-21 21:22:28,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:28,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389746613] [2024-11-21 21:22:28,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:28,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-21 21:22:28,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:28,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389746613] [2024-11-21 21:22:28,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389746613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:28,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:22:28,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 21:22:28,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530935836] [2024-11-21 21:22:28,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:28,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:28,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:28,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:28,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:22:28,890 INFO L87 Difference]: Start difference. First operand 48062 states and 52559 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) [2024-11-21 21:22:29,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:29,672 INFO L93 Difference]: Finished difference Result 103070 states and 112970 transitions. [2024-11-21 21:22:29,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:29,673 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 273 [2024-11-21 21:22:29,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:29,747 INFO L225 Difference]: With dead ends: 103070 [2024-11-21 21:22:29,747 INFO L226 Difference]: Without dead ends: 55010 [2024-11-21 21:22:29,774 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 [2024-11-21 21:22:29,775 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 156 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:29,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 141 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 21:22:29,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55010 states. [2024-11-21 21:22:30,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55010 to 51515. [2024-11-21 21:22:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51515 states, 51514 states have (on average 1.096944519936328) internal successors, (56508), 51514 states have internal predecessors, (56508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:30,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51515 states to 51515 states and 56508 transitions. [2024-11-21 21:22:30,606 INFO L78 Accepts]: Start accepts. Automaton has 51515 states and 56508 transitions. Word has length 273 [2024-11-21 21:22:30,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:30,606 INFO L471 AbstractCegarLoop]: Abstraction has 51515 states and 56508 transitions. [2024-11-21 21:22:30,606 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) [2024-11-21 21:22:30,607 INFO L276 IsEmpty]: Start isEmpty. Operand 51515 states and 56508 transitions. [2024-11-21 21:22:30,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-21 21:22:30,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:30,628 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:22:30,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-21 21:22:30,628 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:30,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:30,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1201686041, now seen corresponding path program 1 times [2024-11-21 21:22:30,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:30,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212858488] [2024-11-21 21:22:30,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:30,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 120 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-21 21:22:31,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:31,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212858488] [2024-11-21 21:22:31,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212858488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:22:31,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546099935] [2024-11-21 21:22:31,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:31,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:22:31,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:22:31,073 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) [2024-11-21 21:22:31,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 21:22:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:31,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:22:31,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:22:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-21 21:22:31,411 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:22:31,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546099935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:31,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:22:31,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-21 21:22:31,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023944084] [2024-11-21 21:22:31,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:31,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:31,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:31,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:31,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:22:31,413 INFO L87 Difference]: Start difference. First operand 51515 states and 56508 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:32,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:32,196 INFO L93 Difference]: Finished difference Result 115224 states and 127094 transitions. [2024-11-21 21:22:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:32,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 274 [2024-11-21 21:22:32,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:32,265 INFO L225 Difference]: With dead ends: 115224 [2024-11-21 21:22:32,265 INFO L226 Difference]: Without dead ends: 63711 [2024-11-21 21:22:32,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:22:32,301 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 218 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:32,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 135 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 21:22:32,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63711 states. [2024-11-21 21:22:33,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63711 to 59635. [2024-11-21 21:22:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59635 states, 59634 states have (on average 1.0860750578529028) internal successors, (64767), 59634 states have internal predecessors, (64767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:33,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59635 states to 59635 states and 64767 transitions. [2024-11-21 21:22:33,209 INFO L78 Accepts]: Start accepts. Automaton has 59635 states and 64767 transitions. Word has length 274 [2024-11-21 21:22:33,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:33,209 INFO L471 AbstractCegarLoop]: Abstraction has 59635 states and 64767 transitions. [2024-11-21 21:22:33,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:33,210 INFO L276 IsEmpty]: Start isEmpty. Operand 59635 states and 64767 transitions. [2024-11-21 21:22:33,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-21 21:22:33,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:33,232 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 21:22:33,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-21 21:22:33,432 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,SelfDestructingSolverStorable15 [2024-11-21 21:22:33,433 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:33,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:33,433 INFO L85 PathProgramCache]: Analyzing trace with hash -428999522, now seen corresponding path program 1 times [2024-11-21 21:22:33,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:33,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295527910] [2024-11-21 21:22:33,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:33,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:33,927 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-21 21:22:33,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:33,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295527910] [2024-11-21 21:22:33,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295527910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:33,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:22:33,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 21:22:33,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538995756] [2024-11-21 21:22:33,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:33,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:22:33,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:33,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:22:33,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:22:33,931 INFO L87 Difference]: Start difference. First operand 59635 states and 64767 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:35,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:35,185 INFO L93 Difference]: Finished difference Result 126209 states and 137339 transitions. [2024-11-21 21:22:35,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:22:35,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 294 [2024-11-21 21:22:35,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:35,267 INFO L225 Difference]: With dead ends: 126209 [2024-11-21 21:22:35,268 INFO L226 Difference]: Without dead ends: 66576 [2024-11-21 21:22:35,306 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 [2024-11-21 21:22:35,306 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 337 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:35,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 91 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-21 21:22:35,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66576 states. [2024-11-21 21:22:36,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66576 to 62688. [2024-11-21 21:22:36,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62688 states, 62687 states have (on average 1.08815224847257) internal successors, (68213), 62687 states have internal predecessors, (68213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:36,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62688 states to 62688 states and 68213 transitions. [2024-11-21 21:22:36,239 INFO L78 Accepts]: Start accepts. Automaton has 62688 states and 68213 transitions. Word has length 294 [2024-11-21 21:22:36,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:36,239 INFO L471 AbstractCegarLoop]: Abstraction has 62688 states and 68213 transitions. [2024-11-21 21:22:36,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:36,240 INFO L276 IsEmpty]: Start isEmpty. Operand 62688 states and 68213 transitions. [2024-11-21 21:22:36,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-21 21:22:36,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:36,254 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-21 21:22:36,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-21 21:22:36,255 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:36,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:36,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1770587948, now seen corresponding path program 1 times [2024-11-21 21:22:36,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:36,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740967795] [2024-11-21 21:22:36,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:36,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:36,846 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 102 proven. 6 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-21 21:22:36,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:36,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740967795] [2024-11-21 21:22:36,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740967795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:22:36,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010500941] [2024-11-21 21:22:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:36,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:22:36,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:22:36,849 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) [2024-11-21 21:22:36,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 21:22:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:37,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 21:22:37,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:22:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-21 21:22:37,095 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:22:37,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010500941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:37,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:22:37,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-21 21:22:37,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681728380] [2024-11-21 21:22:37,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:37,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:22:37,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:37,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:22:37,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:22:37,097 INFO L87 Difference]: Start difference. First operand 62688 states and 68213 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:38,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:38,232 INFO L93 Difference]: Finished difference Result 165842 states and 180665 transitions. [2024-11-21 21:22:38,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:22:38,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 299 [2024-11-21 21:22:38,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:38,337 INFO L225 Difference]: With dead ends: 165842 [2024-11-21 21:22:38,337 INFO L226 Difference]: Without dead ends: 103156 [2024-11-21 21:22:38,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-21 21:22:38,381 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 522 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:38,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 312 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-21 21:22:38,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103156 states. [2024-11-21 21:22:40,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103156 to 97456. [2024-11-21 21:22:40,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97456 states, 97455 states have (on average 1.0904109589041096) internal successors, (106266), 97455 states have internal predecessors, (106266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97456 states to 97456 states and 106266 transitions. [2024-11-21 21:22:40,310 INFO L78 Accepts]: Start accepts. Automaton has 97456 states and 106266 transitions. Word has length 299 [2024-11-21 21:22:40,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:40,311 INFO L471 AbstractCegarLoop]: Abstraction has 97456 states and 106266 transitions. [2024-11-21 21:22:40,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 97456 states and 106266 transitions. [2024-11-21 21:22:40,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-21 21:22:40,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:40,329 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:22:40,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-21 21:22:40,529 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,SelfDestructingSolverStorable17 [2024-11-21 21:22:40,530 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:40,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:40,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1022778220, now seen corresponding path program 1 times [2024-11-21 21:22:40,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:40,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770397368] [2024-11-21 21:22:40,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:40,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:41,171 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-21 21:22:41,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:41,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770397368] [2024-11-21 21:22:41,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770397368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:41,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:22:41,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 21:22:41,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352136517] [2024-11-21 21:22:41,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:41,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:41,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:41,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:41,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:22:41,173 INFO L87 Difference]: Start difference. First operand 97456 states and 106266 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:42,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:42,180 INFO L93 Difference]: Finished difference Result 226681 states and 247582 transitions. [2024-11-21 21:22:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:42,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 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 334 [2024-11-21 21:22:42,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:42,317 INFO L225 Difference]: With dead ends: 226681 [2024-11-21 21:22:42,317 INFO L226 Difference]: Without dead ends: 128821 [2024-11-21 21:22:42,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:22:42,382 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 166 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:42,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 131 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 21:22:42,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128821 states. [2024-11-21 21:22:44,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128821 to 127784. [2024-11-21 21:22:44,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127784 states, 127783 states have (on average 1.084244383055649) internal successors, (138548), 127783 states have internal predecessors, (138548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:44,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127784 states to 127784 states and 138548 transitions. [2024-11-21 21:22:44,626 INFO L78 Accepts]: Start accepts. Automaton has 127784 states and 138548 transitions. Word has length 334 [2024-11-21 21:22:44,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:44,627 INFO L471 AbstractCegarLoop]: Abstraction has 127784 states and 138548 transitions. [2024-11-21 21:22:44,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:44,627 INFO L276 IsEmpty]: Start isEmpty. Operand 127784 states and 138548 transitions. [2024-11-21 21:22:44,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-11-21 21:22:44,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:44,669 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:22:44,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-21 21:22:44,670 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:44,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:44,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1821287127, now seen corresponding path program 1 times [2024-11-21 21:22:44,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:44,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912922849] [2024-11-21 21:22:44,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:44,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 196 proven. 6 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-21 21:22:45,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:45,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912922849] [2024-11-21 21:22:45,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912922849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:22:45,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446211166] [2024-11-21 21:22:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:45,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:22:45,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:22:45,690 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:22:45,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 21:22:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:45,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:22:45,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:22:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-21 21:22:46,048 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:22:46,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446211166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:46,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:22:46,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-21 21:22:46,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474334904] [2024-11-21 21:22:46,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:46,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:46,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:46,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:46,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:22:46,050 INFO L87 Difference]: Start difference. First operand 127784 states and 138548 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:47,270 INFO L93 Difference]: Finished difference Result 254772 states and 276261 transitions. [2024-11-21 21:22:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:47,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 341 [2024-11-21 21:22:47,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:47,429 INFO L225 Difference]: With dead ends: 254772 [2024-11-21 21:22:47,430 INFO L226 Difference]: Without dead ends: 127193 [2024-11-21 21:22:47,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:22:47,503 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 107 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:47,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 284 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 21:22:47,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127193 states. [2024-11-21 21:22:49,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127193 to 127173. [2024-11-21 21:22:49,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127173 states, 127172 states have (on average 1.0813229327210392) internal successors, (137514), 127172 states have internal predecessors, (137514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:49,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127173 states to 127173 states and 137514 transitions. [2024-11-21 21:22:49,618 INFO L78 Accepts]: Start accepts. Automaton has 127173 states and 137514 transitions. Word has length 341 [2024-11-21 21:22:49,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:49,618 INFO L471 AbstractCegarLoop]: Abstraction has 127173 states and 137514 transitions. [2024-11-21 21:22:49,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 127173 states and 137514 transitions. [2024-11-21 21:22:49,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-21 21:22:49,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:49,652 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:22:49,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-21 21:22:49,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:22:49,853 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:49,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:49,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1496353050, now seen corresponding path program 1 times [2024-11-21 21:22:49,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:49,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574305198] [2024-11-21 21:22:49,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:49,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 232 proven. 6 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-11-21 21:22:50,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:50,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574305198] [2024-11-21 21:22:50,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574305198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:22:50,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347608547] [2024-11-21 21:22:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:50,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:22:50,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:22:50,828 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:22:50,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-21 21:22:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:50,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:22:51,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:22:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-21 21:22:51,235 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:22:51,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347608547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:51,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:22:51,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-21 21:22:51,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140197967] [2024-11-21 21:22:51,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:51,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:51,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:51,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:51,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:22:51,236 INFO L87 Difference]: Start difference. First operand 127173 states and 137514 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:52,170 INFO L93 Difference]: Finished difference Result 259029 states and 279873 transitions. [2024-11-21 21:22:52,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:52,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 361 [2024-11-21 21:22:52,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:52,327 INFO L225 Difference]: With dead ends: 259029 [2024-11-21 21:22:52,327 INFO L226 Difference]: Without dead ends: 132061 [2024-11-21 21:22:52,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:22:52,868 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 115 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:52,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 42 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 21:22:52,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132061 states. [2024-11-21 21:22:54,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132061 to 126966. [2024-11-21 21:22:54,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126966 states, 126965 states have (on average 1.081164100342614) internal successors, (137270), 126965 states have internal predecessors, (137270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126966 states to 126966 states and 137270 transitions. [2024-11-21 21:22:54,557 INFO L78 Accepts]: Start accepts. Automaton has 126966 states and 137270 transitions. Word has length 361 [2024-11-21 21:22:54,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:22:54,557 INFO L471 AbstractCegarLoop]: Abstraction has 126966 states and 137270 transitions. [2024-11-21 21:22:54,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:54,557 INFO L276 IsEmpty]: Start isEmpty. Operand 126966 states and 137270 transitions. [2024-11-21 21:22:54,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-21 21:22:54,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:22:54,583 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2024-11-21 21:22:54,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-21 21:22:54,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:22:54,785 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:22:54,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:22:54,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1932945922, now seen corresponding path program 1 times [2024-11-21 21:22:54,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:22:54,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206393422] [2024-11-21 21:22:54,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:54,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:22:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 216 proven. 6 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-11-21 21:22:55,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:22:55,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206393422] [2024-11-21 21:22:55,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206393422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:22:55,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145020482] [2024-11-21 21:22:55,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:22:55,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:22:55,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:22:55,822 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 21:22:55,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-21 21:22:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:22:56,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:22:56,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:22:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-21 21:22:56,143 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:22:56,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145020482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:22:56,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:22:56,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-21 21:22:56,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705759657] [2024-11-21 21:22:56,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:22:56,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:22:56,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:22:56,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:22:56,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:22:56,146 INFO L87 Difference]: Start difference. First operand 126966 states and 137270 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:22:57,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:22:57,670 INFO L93 Difference]: Finished difference Result 272670 states and 295962 transitions. [2024-11-21 21:22:57,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:22:57,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 361 [2024-11-21 21:22:57,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:22:57,848 INFO L225 Difference]: With dead ends: 272670 [2024-11-21 21:22:57,848 INFO L226 Difference]: Without dead ends: 145909 [2024-11-21 21:22:57,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:22:57,915 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 202 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 21:22:57,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 113 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 21:22:58,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145909 states. [2024-11-21 21:23:00,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145909 to 141408. [2024-11-21 21:23:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141408 states, 141407 states have (on average 1.0807810080123332) internal successors, (152830), 141407 states have internal predecessors, (152830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:23:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141408 states to 141408 states and 152830 transitions. [2024-11-21 21:23:00,273 INFO L78 Accepts]: Start accepts. Automaton has 141408 states and 152830 transitions. Word has length 361 [2024-11-21 21:23:00,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:23:00,273 INFO L471 AbstractCegarLoop]: Abstraction has 141408 states and 152830 transitions. [2024-11-21 21:23:00,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:23:00,274 INFO L276 IsEmpty]: Start isEmpty. Operand 141408 states and 152830 transitions. [2024-11-21 21:23:00,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-21 21:23:00,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:23:00,301 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:23:00,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-21 21:23:00,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-21 21:23:00,502 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:23:00,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:23:00,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1645318451, now seen corresponding path program 1 times [2024-11-21 21:23:00,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:23:00,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384627328] [2024-11-21 21:23:00,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:23:00,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:23:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:23:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-21 21:23:00,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:23:00,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384627328] [2024-11-21 21:23:00,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384627328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:23:00,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:23:00,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 21:23:00,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667456535] [2024-11-21 21:23:00,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:23:00,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:23:00,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:23:00,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:23:00,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:23:00,805 INFO L87 Difference]: Start difference. First operand 141408 states and 152830 transitions. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:23:02,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:23:02,720 INFO L93 Difference]: Finished difference Result 329966 states and 355968 transitions. [2024-11-21 21:23:02,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:23:02,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 366 [2024-11-21 21:23:02,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:23:02,988 INFO L225 Difference]: With dead ends: 329966 [2024-11-21 21:23:02,989 INFO L226 Difference]: Without dead ends: 188761 [2024-11-21 21:23:03,093 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 [2024-11-21 21:23:03,093 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 358 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 21:23:03,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 430 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 21:23:03,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188761 states. [2024-11-21 21:23:05,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188761 to 175965. [2024-11-21 21:23:05,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175965 states, 175964 states have (on average 1.0796015093996498) internal successors, (189971), 175964 states have internal predecessors, (189971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:23:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175965 states to 175965 states and 189971 transitions. [2024-11-21 21:23:06,004 INFO L78 Accepts]: Start accepts. Automaton has 175965 states and 189971 transitions. Word has length 366 [2024-11-21 21:23:06,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:23:06,005 INFO L471 AbstractCegarLoop]: Abstraction has 175965 states and 189971 transitions. [2024-11-21 21:23:06,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:23:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 175965 states and 189971 transitions. [2024-11-21 21:23:06,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-11-21 21:23:06,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:23:06,029 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-21 21:23:06,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-21 21:23:06,029 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:23:06,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:23:06,030 INFO L85 PathProgramCache]: Analyzing trace with hash 892492964, now seen corresponding path program 1 times [2024-11-21 21:23:06,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:23:06,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139341901] [2024-11-21 21:23:06,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:23:06,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms