./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem16_label04.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/Problem16_label04.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 90fb180caa8b6a5816e65dbd5894ace691fe27eeb9d4238d5c5bc9791f06c4a2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 22:25:07,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 22:25:07,559 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 22:25:07,565 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 22:25:07,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 22:25:07,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 22:25:07,582 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 22:25:07,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 22:25:07,583 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 22:25:07,583 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 22:25:07,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 22:25:07,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 22:25:07,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 22:25:07,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 22:25:07,585 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 22:25:07,585 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 22:25:07,585 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 22:25:07,586 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 22:25:07,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 22:25:07,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 22:25:07,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 22:25:07,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 22:25:07,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 22:25:07,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 22:25:07,588 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 22:25:07,588 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 22:25:07,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 22:25:07,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 22:25:07,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 22:25:07,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 22:25:07,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 22:25:07,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 22:25:07,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:25:07,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 22:25:07,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 22:25:07,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 22:25:07,591 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 22:25:07,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 22:25:07,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 22:25:07,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 22:25:07,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 22:25:07,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 22:25:07,595 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90fb180caa8b6a5816e65dbd5894ace691fe27eeb9d4238d5c5bc9791f06c4a2 [2024-11-21 22:25:07,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 22:25:07,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 22:25:07,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 22:25:07,833 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 22:25:07,834 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 22:25:07,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label04.c [2024-11-21 22:25:09,175 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 22:25:09,449 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 22:25:09,450 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label04.c [2024-11-21 22:25:09,468 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ffd2b75e/361210683f2c481995cb20d7de38a907/FLAG0153ab111 [2024-11-21 22:25:09,748 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ffd2b75e/361210683f2c481995cb20d7de38a907 [2024-11-21 22:25:09,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 22:25:09,752 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 22:25:09,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 22:25:09,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 22:25:09,757 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 22:25:09,758 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:09" (1/1) ... [2024-11-21 22:25:09,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3168c33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:09, skipping insertion in model container [2024-11-21 22:25:09,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:09" (1/1) ... [2024-11-21 22:25:09,817 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 22:25:09,983 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/Problem16_label04.c[3124,3137] [2024-11-21 22:25:10,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:25:10,371 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 22:25:10,387 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/Problem16_label04.c[3124,3137] [2024-11-21 22:25:10,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:25:10,525 INFO L204 MainTranslator]: Completed translation [2024-11-21 22:25:10,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10 WrapperNode [2024-11-21 22:25:10,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 22:25:10,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 22:25:10,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 22:25:10,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 22:25:10,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2024-11-21 22:25:10,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2024-11-21 22:25:10,693 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2024-11-21 22:25:10,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 22:25:10,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 22:25:10,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 22:25:10,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 22:25:10,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2024-11-21 22:25:10,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2024-11-21 22:25:10,730 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2024-11-21 22:25:10,778 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 22:25:10,779 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2024-11-21 22:25:10,779 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2024-11-21 22:25:10,820 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2024-11-21 22:25:10,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2024-11-21 22:25:10,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2024-11-21 22:25:10,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2024-11-21 22:25:10,874 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 22:25:10,875 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 22:25:10,875 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 22:25:10,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 22:25:10,876 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (1/1) ... [2024-11-21 22:25:10,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:25:10,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:25:10,909 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 22:25:10,911 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 22:25:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 22:25:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 22:25:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 22:25:10,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 22:25:10,995 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 22:25:11,004 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 22:25:12,587 INFO L? ?]: Removed 276 outVars from TransFormulas that were not future-live. [2024-11-21 22:25:12,587 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 22:25:12,611 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 22:25:12,614 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-21 22:25:12,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:12 BoogieIcfgContainer [2024-11-21 22:25:12,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 22:25:12,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 22:25:12,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 22:25:12,618 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 22:25:12,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:25:09" (1/3) ... [2024-11-21 22:25:12,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549f9615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:25:12, skipping insertion in model container [2024-11-21 22:25:12,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:10" (2/3) ... [2024-11-21 22:25:12,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549f9615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:25:12, skipping insertion in model container [2024-11-21 22:25:12,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:12" (3/3) ... [2024-11-21 22:25:12,621 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label04.c [2024-11-21 22:25:12,632 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 22:25:12,633 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 22:25:12,697 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 22:25:12,702 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;@167e4f81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 22:25:12,703 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 22:25:12,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 0 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 22:25:12,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-21 22:25:12,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:12,714 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:12,714 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:12,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:12,719 INFO L85 PathProgramCache]: Analyzing trace with hash -716875070, now seen corresponding path program 1 times [2024-11-21 22:25:12,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:12,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797818745] [2024-11-21 22:25:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:12,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:13,186 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 22:25:13,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:13,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797818745] [2024-11-21 22:25:13,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797818745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:13,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:13,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:13,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102725976] [2024-11-21 22:25:13,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:13,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:25:13,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:13,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:25:13,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:25:13,214 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:15,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:15,749 INFO L93 Difference]: Finished difference Result 1456 states and 2764 transitions. [2024-11-21 22:25:15,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:25:15,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-21 22:25:15,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:15,763 INFO L225 Difference]: With dead ends: 1456 [2024-11-21 22:25:15,763 INFO L226 Difference]: Without dead ends: 991 [2024-11-21 22:25:15,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:25:15,772 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 976 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:15,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 347 Invalid, 2946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-21 22:25:15,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2024-11-21 22:25:15,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2024-11-21 22:25:15,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.4858585858585858) internal successors, (1471), 990 states have internal predecessors, (1471), 0 states have call successors, (0), 0 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 22:25:15,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1471 transitions. [2024-11-21 22:25:15,836 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1471 transitions. Word has length 28 [2024-11-21 22:25:15,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:15,836 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1471 transitions. [2024-11-21 22:25:15,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:15,837 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1471 transitions. [2024-11-21 22:25:15,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-21 22:25:15,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:15,839 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:15,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 22:25:15,840 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:15,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:15,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1283127025, now seen corresponding path program 1 times [2024-11-21 22:25:15,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:15,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110644555] [2024-11-21 22:25:15,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:15,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-21 22:25:15,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:15,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110644555] [2024-11-21 22:25:15,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110644555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:15,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:15,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:25:15,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972769830] [2024-11-21 22:25:15,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:15,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:15,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:15,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:15,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:15,979 INFO L87 Difference]: Start difference. First operand 991 states and 1471 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:25:17,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:17,070 INFO L93 Difference]: Finished difference Result 2309 states and 3726 transitions. [2024-11-21 22:25:17,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:17,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 115 [2024-11-21 22:25:17,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:17,075 INFO L225 Difference]: With dead ends: 2309 [2024-11-21 22:25:17,076 INFO L226 Difference]: Without dead ends: 1649 [2024-11-21 22:25:17,077 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 22:25:17,078 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 280 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:17,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 199 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-21 22:25:17,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2024-11-21 22:25:17,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1649. [2024-11-21 22:25:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1648 states have (on average 1.379247572815534) internal successors, (2273), 1648 states have internal predecessors, (2273), 0 states have call successors, (0), 0 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 22:25:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2273 transitions. [2024-11-21 22:25:17,109 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2273 transitions. Word has length 115 [2024-11-21 22:25:17,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:17,111 INFO L471 AbstractCegarLoop]: Abstraction has 1649 states and 2273 transitions. [2024-11-21 22:25:17,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:25:17,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2273 transitions. [2024-11-21 22:25:17,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-21 22:25:17,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:17,116 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:25:17,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 22:25:17,117 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:17,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:17,120 INFO L85 PathProgramCache]: Analyzing trace with hash 158615286, now seen corresponding path program 1 times [2024-11-21 22:25:17,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:17,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079783469] [2024-11-21 22:25:17,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:17,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-21 22:25:17,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:17,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079783469] [2024-11-21 22:25:17,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079783469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:17,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:17,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:25:17,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662208703] [2024-11-21 22:25:17,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:17,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:17,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:17,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:17,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:17,323 INFO L87 Difference]: Start difference. First operand 1649 states and 2273 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 22:25:18,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:18,365 INFO L93 Difference]: Finished difference Result 4283 states and 6132 transitions. [2024-11-21 22:25:18,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:18,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 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 194 [2024-11-21 22:25:18,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:18,374 INFO L225 Difference]: With dead ends: 4283 [2024-11-21 22:25:18,374 INFO L226 Difference]: Without dead ends: 2965 [2024-11-21 22:25:18,376 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 22:25:18,376 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 358 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:18,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 156 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-21 22:25:18,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2024-11-21 22:25:18,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 2636. [2024-11-21 22:25:18,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 1.3400379506641367) internal successors, (3531), 2635 states have internal predecessors, (3531), 0 states have call successors, (0), 0 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 22:25:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3531 transitions. [2024-11-21 22:25:18,412 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3531 transitions. Word has length 194 [2024-11-21 22:25:18,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:18,413 INFO L471 AbstractCegarLoop]: Abstraction has 2636 states and 3531 transitions. [2024-11-21 22:25:18,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 22:25:18,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3531 transitions. [2024-11-21 22:25:18,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-21 22:25:18,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:18,416 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:25:18,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 22:25:18,416 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:18,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:18,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1684873428, now seen corresponding path program 1 times [2024-11-21 22:25:18,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:18,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624914271] [2024-11-21 22:25:18,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:18,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-21 22:25:18,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:18,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624914271] [2024-11-21 22:25:18,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624914271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:18,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:18,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:25:18,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442631588] [2024-11-21 22:25:18,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:18,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:18,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:18,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:18,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:18,634 INFO L87 Difference]: Start difference. First operand 2636 states and 3531 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 22:25:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:19,717 INFO L93 Difference]: Finished difference Result 5599 states and 7527 transitions. [2024-11-21 22:25:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:19,718 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 270 [2024-11-21 22:25:19,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:19,726 INFO L225 Difference]: With dead ends: 5599 [2024-11-21 22:25:19,726 INFO L226 Difference]: Without dead ends: 3294 [2024-11-21 22:25:19,729 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 22:25:19,730 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 278 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:19,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 77 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-21 22:25:19,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2024-11-21 22:25:19,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3294. [2024-11-21 22:25:19,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3294 states, 3293 states have (on average 1.2247191011235956) internal successors, (4033), 3293 states have internal predecessors, (4033), 0 states have call successors, (0), 0 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 22:25:19,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3294 states to 3294 states and 4033 transitions. [2024-11-21 22:25:19,770 INFO L78 Accepts]: Start accepts. Automaton has 3294 states and 4033 transitions. Word has length 270 [2024-11-21 22:25:19,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:19,770 INFO L471 AbstractCegarLoop]: Abstraction has 3294 states and 4033 transitions. [2024-11-21 22:25:19,770 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 22:25:19,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3294 states and 4033 transitions. [2024-11-21 22:25:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-11-21 22:25:19,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:19,775 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:25:19,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 22:25:19,775 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:19,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:19,776 INFO L85 PathProgramCache]: Analyzing trace with hash -497570456, now seen corresponding path program 1 times [2024-11-21 22:25:19,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:19,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488996054] [2024-11-21 22:25:19,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:19,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-21 22:25:20,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:20,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488996054] [2024-11-21 22:25:20,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488996054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:20,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:20,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:20,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801121608] [2024-11-21 22:25:20,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:20,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:20,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:20,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:20,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:20,003 INFO L87 Difference]: Start difference. First operand 3294 states and 4033 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 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 22:25:21,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:21,004 INFO L93 Difference]: Finished difference Result 6586 states and 8076 transitions. [2024-11-21 22:25:21,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:21,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 447 [2024-11-21 22:25:21,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:21,013 INFO L225 Difference]: With dead ends: 6586 [2024-11-21 22:25:21,014 INFO L226 Difference]: Without dead ends: 3294 [2024-11-21 22:25:21,017 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 22:25:21,018 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 288 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:21,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 538 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-21 22:25:21,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2024-11-21 22:25:21,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3294. [2024-11-21 22:25:21,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3294 states, 3293 states have (on average 1.0567871242028546) internal successors, (3480), 3293 states have internal predecessors, (3480), 0 states have call successors, (0), 0 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 22:25:21,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3294 states to 3294 states and 3480 transitions. [2024-11-21 22:25:21,056 INFO L78 Accepts]: Start accepts. Automaton has 3294 states and 3480 transitions. Word has length 447 [2024-11-21 22:25:21,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:21,057 INFO L471 AbstractCegarLoop]: Abstraction has 3294 states and 3480 transitions. [2024-11-21 22:25:21,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 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 22:25:21,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3294 states and 3480 transitions. [2024-11-21 22:25:21,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-21 22:25:21,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:21,062 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:21,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-21 22:25:21,063 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:21,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:21,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1468600354, now seen corresponding path program 1 times [2024-11-21 22:25:21,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:21,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822634909] [2024-11-21 22:25:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:21,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:21,653 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-21 22:25:21,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:21,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822634909] [2024-11-21 22:25:21,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822634909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:21,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:21,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:21,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752271858] [2024-11-21 22:25:21,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:21,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:25:21,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:21,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:25:21,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:25:21,657 INFO L87 Difference]: Start difference. First operand 3294 states and 3480 transitions. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 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 22:25:22,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:22,902 INFO L93 Difference]: Finished difference Result 10865 states and 11555 transitions. [2024-11-21 22:25:22,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:25:22,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 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 499 [2024-11-21 22:25:22,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:22,922 INFO L225 Difference]: With dead ends: 10865 [2024-11-21 22:25:22,922 INFO L226 Difference]: Without dead ends: 7902 [2024-11-21 22:25:22,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:25:22,928 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 401 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:22,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 85 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-21 22:25:22,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7902 states. [2024-11-21 22:25:23,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7902 to 7242. [2024-11-21 22:25:23,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7242 states, 7241 states have (on average 1.0567601160060764) internal successors, (7652), 7241 states have internal predecessors, (7652), 0 states have call successors, (0), 0 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 22:25:23,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 7652 transitions. [2024-11-21 22:25:23,044 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 7652 transitions. Word has length 499 [2024-11-21 22:25:23,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:23,044 INFO L471 AbstractCegarLoop]: Abstraction has 7242 states and 7652 transitions. [2024-11-21 22:25:23,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 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 22:25:23,046 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 7652 transitions. [2024-11-21 22:25:23,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2024-11-21 22:25:23,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:23,054 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, 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, 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, 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] [2024-11-21 22:25:23,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-21 22:25:23,054 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:23,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:23,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1588765430, now seen corresponding path program 1 times [2024-11-21 22:25:23,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:23,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657440129] [2024-11-21 22:25:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:23,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 477 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2024-11-21 22:25:23,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:23,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657440129] [2024-11-21 22:25:23,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657440129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:23,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:23,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:25:23,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535751005] [2024-11-21 22:25:23,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:23,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:23,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:23,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:23,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:23,521 INFO L87 Difference]: Start difference. First operand 7242 states and 7652 transitions. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 2 states have internal predecessors, (366), 0 states have call successors, (0), 0 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 22:25:24,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:24,304 INFO L93 Difference]: Finished difference Result 16787 states and 17775 transitions. [2024-11-21 22:25:24,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:24,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 2 states have internal predecessors, (366), 0 states have call successors, (0), 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 595 [2024-11-21 22:25:24,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:24,325 INFO L225 Difference]: With dead ends: 16787 [2024-11-21 22:25:24,326 INFO L226 Difference]: Without dead ends: 9876 [2024-11-21 22:25:24,333 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 22:25:24,333 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 100 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:24,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 62 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 22:25:24,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9876 states. [2024-11-21 22:25:24,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9876 to 9545. [2024-11-21 22:25:24,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9545 states, 9544 states have (on average 1.0563704945515506) internal successors, (10082), 9544 states have internal predecessors, (10082), 0 states have call successors, (0), 0 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 22:25:24,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9545 states to 9545 states and 10082 transitions. [2024-11-21 22:25:24,443 INFO L78 Accepts]: Start accepts. Automaton has 9545 states and 10082 transitions. Word has length 595 [2024-11-21 22:25:24,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:24,443 INFO L471 AbstractCegarLoop]: Abstraction has 9545 states and 10082 transitions. [2024-11-21 22:25:24,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 2 states have internal predecessors, (366), 0 states have call successors, (0), 0 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 22:25:24,447 INFO L276 IsEmpty]: Start isEmpty. Operand 9545 states and 10082 transitions. [2024-11-21 22:25:24,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2024-11-21 22:25:24,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:24,507 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, 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, 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, 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 22:25:24,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-21 22:25:24,508 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:24,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:24,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1913678050, now seen corresponding path program 1 times [2024-11-21 22:25:24,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:24,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764651938] [2024-11-21 22:25:24,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:24,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 614 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-21 22:25:24,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:24,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764651938] [2024-11-21 22:25:24,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764651938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:24,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:24,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:24,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667795451] [2024-11-21 22:25:24,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:24,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:24,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:24,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:24,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:24,953 INFO L87 Difference]: Start difference. First operand 9545 states and 10082 transitions. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 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 22:25:25,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:25,677 INFO L93 Difference]: Finished difference Result 22378 states and 23788 transitions. [2024-11-21 22:25:25,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:25,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 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 603 [2024-11-21 22:25:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:25,698 INFO L225 Difference]: With dead ends: 22378 [2024-11-21 22:25:25,698 INFO L226 Difference]: Without dead ends: 13493 [2024-11-21 22:25:25,707 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 22:25:25,708 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 224 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:25,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 38 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 22:25:25,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13493 states. [2024-11-21 22:25:25,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13493 to 13164. [2024-11-21 22:25:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13164 states, 13163 states have (on average 1.0607764187495252) internal successors, (13963), 13163 states have internal predecessors, (13963), 0 states have call successors, (0), 0 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 22:25:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13164 states to 13164 states and 13963 transitions. [2024-11-21 22:25:25,955 INFO L78 Accepts]: Start accepts. Automaton has 13164 states and 13963 transitions. Word has length 603 [2024-11-21 22:25:25,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:25,955 INFO L471 AbstractCegarLoop]: Abstraction has 13164 states and 13963 transitions. [2024-11-21 22:25:25,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 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 22:25:25,956 INFO L276 IsEmpty]: Start isEmpty. Operand 13164 states and 13963 transitions. [2024-11-21 22:25:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2024-11-21 22:25:25,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:25,971 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:25,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-21 22:25:25,971 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:25,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:25,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1109247991, now seen corresponding path program 1 times [2024-11-21 22:25:25,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:25,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136960743] [2024-11-21 22:25:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:25,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 807 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2024-11-21 22:25:26,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:26,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136960743] [2024-11-21 22:25:26,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136960743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:26,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:26,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:26,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381708202] [2024-11-21 22:25:26,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:26,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:25:26,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:26,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:25:26,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:25:26,894 INFO L87 Difference]: Start difference. First operand 13164 states and 13963 transitions. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 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 22:25:27,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:27,887 INFO L93 Difference]: Finished difference Result 25997 states and 27593 transitions. [2024-11-21 22:25:27,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:25:27,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 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 722 [2024-11-21 22:25:27,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:27,907 INFO L225 Difference]: With dead ends: 25997 [2024-11-21 22:25:27,908 INFO L226 Difference]: Without dead ends: 13164 [2024-11-21 22:25:27,916 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 22:25:27,918 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 268 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:27,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 123 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-21 22:25:27,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13164 states. [2024-11-21 22:25:28,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13164 to 13164. [2024-11-21 22:25:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13164 states, 13163 states have (on average 1.0603965661323407) internal successors, (13958), 13163 states have internal predecessors, (13958), 0 states have call successors, (0), 0 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 22:25:28,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13164 states to 13164 states and 13958 transitions. [2024-11-21 22:25:28,198 INFO L78 Accepts]: Start accepts. Automaton has 13164 states and 13958 transitions. Word has length 722 [2024-11-21 22:25:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:28,198 INFO L471 AbstractCegarLoop]: Abstraction has 13164 states and 13958 transitions. [2024-11-21 22:25:28,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 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 22:25:28,198 INFO L276 IsEmpty]: Start isEmpty. Operand 13164 states and 13958 transitions. [2024-11-21 22:25:28,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2024-11-21 22:25:28,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:28,214 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 22:25:28,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-21 22:25:28,214 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:28,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:28,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1050631255, now seen corresponding path program 1 times [2024-11-21 22:25:28,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:28,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471595257] [2024-11-21 22:25:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:28,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 526 proven. 0 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2024-11-21 22:25:28,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:28,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471595257] [2024-11-21 22:25:28,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471595257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:28,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:28,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:28,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769488398] [2024-11-21 22:25:28,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:28,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:28,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:28,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:28,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:28,692 INFO L87 Difference]: Start difference. First operand 13164 states and 13958 transitions. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 22:25:29,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:29,574 INFO L93 Difference]: Finished difference Result 28629 states and 30447 transitions. [2024-11-21 22:25:29,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:29,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 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 783 [2024-11-21 22:25:29,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:29,598 INFO L225 Difference]: With dead ends: 28629 [2024-11-21 22:25:29,598 INFO L226 Difference]: Without dead ends: 15796 [2024-11-21 22:25:29,608 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 22:25:29,609 INFO L432 NwaCegarLoop]: 431 mSDtfsCounter, 220 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:29,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 437 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-21 22:25:29,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15796 states. [2024-11-21 22:25:29,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15796 to 15467. [2024-11-21 22:25:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15467 states, 15466 states have (on average 1.047588258114574) internal successors, (16202), 15466 states have internal predecessors, (16202), 0 states have call successors, (0), 0 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 22:25:29,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15467 states to 15467 states and 16202 transitions. [2024-11-21 22:25:29,751 INFO L78 Accepts]: Start accepts. Automaton has 15467 states and 16202 transitions. Word has length 783 [2024-11-21 22:25:29,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:29,752 INFO L471 AbstractCegarLoop]: Abstraction has 15467 states and 16202 transitions. [2024-11-21 22:25:29,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 22:25:29,753 INFO L276 IsEmpty]: Start isEmpty. Operand 15467 states and 16202 transitions. [2024-11-21 22:25:29,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2024-11-21 22:25:29,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:29,762 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 22:25:29,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-21 22:25:29,762 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:29,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:29,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1190772430, now seen corresponding path program 1 times [2024-11-21 22:25:29,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:29,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289992217] [2024-11-21 22:25:29,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:29,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2024-11-21 22:25:30,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:30,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289992217] [2024-11-21 22:25:30,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289992217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:30,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:30,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:30,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520578101] [2024-11-21 22:25:30,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:30,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:30,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:30,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:30,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:30,714 INFO L87 Difference]: Start difference. First operand 15467 states and 16202 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 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 22:25:31,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:31,419 INFO L93 Difference]: Finished difference Result 30274 states and 31740 transitions. [2024-11-21 22:25:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:31,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 784 [2024-11-21 22:25:31,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:31,436 INFO L225 Difference]: With dead ends: 30274 [2024-11-21 22:25:31,436 INFO L226 Difference]: Without dead ends: 15467 [2024-11-21 22:25:31,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 22:25:31,445 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 339 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:31,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 377 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:25:31,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15467 states. [2024-11-21 22:25:31,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15467 to 14809. [2024-11-21 22:25:31,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14809 states, 14808 states have (on average 1.040653700702323) internal successors, (15410), 14808 states have internal predecessors, (15410), 0 states have call successors, (0), 0 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 22:25:31,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14809 states to 14809 states and 15410 transitions. [2024-11-21 22:25:31,627 INFO L78 Accepts]: Start accepts. Automaton has 14809 states and 15410 transitions. Word has length 784 [2024-11-21 22:25:31,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:31,628 INFO L471 AbstractCegarLoop]: Abstraction has 14809 states and 15410 transitions. [2024-11-21 22:25:31,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 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 22:25:31,628 INFO L276 IsEmpty]: Start isEmpty. Operand 14809 states and 15410 transitions. [2024-11-21 22:25:31,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1204 [2024-11-21 22:25:31,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:31,645 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:31,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-21 22:25:31,645 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:31,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:31,646 INFO L85 PathProgramCache]: Analyzing trace with hash -701036074, now seen corresponding path program 1 times [2024-11-21 22:25:31,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:31,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636140803] [2024-11-21 22:25:31,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:31,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 1087 proven. 0 refuted. 0 times theorem prover too weak. 1884 trivial. 0 not checked. [2024-11-21 22:25:32,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:32,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636140803] [2024-11-21 22:25:32,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636140803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:32,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:32,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:32,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276828366] [2024-11-21 22:25:32,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:32,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:32,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:32,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:32,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:32,241 INFO L87 Difference]: Start difference. First operand 14809 states and 15410 transitions. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 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 22:25:33,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:33,022 INFO L93 Difference]: Finished difference Result 32577 states and 33948 transitions. [2024-11-21 22:25:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:33,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 1203 [2024-11-21 22:25:33,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:33,038 INFO L225 Difference]: With dead ends: 32577 [2024-11-21 22:25:33,038 INFO L226 Difference]: Without dead ends: 16125 [2024-11-21 22:25:33,042 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 22:25:33,043 INFO L432 NwaCegarLoop]: 411 mSDtfsCounter, 257 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:33,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 417 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:25:33,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2024-11-21 22:25:33,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 14480. [2024-11-21 22:25:33,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14480 states, 14479 states have (on average 1.0362594101802611) internal successors, (15004), 14479 states have internal predecessors, (15004), 0 states have call successors, (0), 0 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 22:25:33,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14480 states to 14480 states and 15004 transitions. [2024-11-21 22:25:33,153 INFO L78 Accepts]: Start accepts. Automaton has 14480 states and 15004 transitions. Word has length 1203 [2024-11-21 22:25:33,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:33,155 INFO L471 AbstractCegarLoop]: Abstraction has 14480 states and 15004 transitions. [2024-11-21 22:25:33,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 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 22:25:33,155 INFO L276 IsEmpty]: Start isEmpty. Operand 14480 states and 15004 transitions. [2024-11-21 22:25:33,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1323 [2024-11-21 22:25:33,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:33,174 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-21 22:25:33,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-21 22:25:33,174 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:33,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:33,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1607012204, now seen corresponding path program 1 times [2024-11-21 22:25:33,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:33,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674799457] [2024-11-21 22:25:33,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:33,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4080 backedges. 2668 proven. 0 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2024-11-21 22:25:33,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:33,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674799457] [2024-11-21 22:25:33,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674799457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:33,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:33,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:33,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397367236] [2024-11-21 22:25:33,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:33,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:33,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:33,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:33,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:33,729 INFO L87 Difference]: Start difference. First operand 14480 states and 15004 transitions. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 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 22:25:34,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:34,457 INFO L93 Difference]: Finished difference Result 29616 states and 30699 transitions. [2024-11-21 22:25:34,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:34,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 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 1322 [2024-11-21 22:25:34,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:34,472 INFO L225 Difference]: With dead ends: 29616 [2024-11-21 22:25:34,472 INFO L226 Difference]: Without dead ends: 15467 [2024-11-21 22:25:34,481 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 22:25:34,481 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 192 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:34,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 424 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 22:25:34,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15467 states. [2024-11-21 22:25:34,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15467 to 14809. [2024-11-21 22:25:34,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14809 states, 14808 states have (on average 1.0314019448946516) internal successors, (15273), 14808 states have internal predecessors, (15273), 0 states have call successors, (0), 0 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 22:25:34,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14809 states to 14809 states and 15273 transitions. [2024-11-21 22:25:34,595 INFO L78 Accepts]: Start accepts. Automaton has 14809 states and 15273 transitions. Word has length 1322 [2024-11-21 22:25:34,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:34,595 INFO L471 AbstractCegarLoop]: Abstraction has 14809 states and 15273 transitions. [2024-11-21 22:25:34,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 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 22:25:34,596 INFO L276 IsEmpty]: Start isEmpty. Operand 14809 states and 15273 transitions. [2024-11-21 22:25:34,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1352 [2024-11-21 22:25:34,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:34,615 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-21 22:25:34,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-21 22:25:34,616 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:34,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:34,616 INFO L85 PathProgramCache]: Analyzing trace with hash -307328779, now seen corresponding path program 1 times [2024-11-21 22:25:34,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:34,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265960182] [2024-11-21 22:25:34,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:34,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:35,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4208 backedges. 2841 proven. 0 refuted. 0 times theorem prover too weak. 1367 trivial. 0 not checked. [2024-11-21 22:25:35,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:35,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265960182] [2024-11-21 22:25:35,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265960182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:35,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:35,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:35,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793803648] [2024-11-21 22:25:35,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:35,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:35,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:35,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:35,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:35,294 INFO L87 Difference]: Start difference. First operand 14809 states and 15273 transitions. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 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 22:25:36,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:36,044 INFO L93 Difference]: Finished difference Result 29287 states and 30212 transitions. [2024-11-21 22:25:36,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:36,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 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 1351 [2024-11-21 22:25:36,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:36,059 INFO L225 Difference]: With dead ends: 29287 [2024-11-21 22:25:36,060 INFO L226 Difference]: Without dead ends: 14809 [2024-11-21 22:25:36,070 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 22:25:36,071 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 193 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:36,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 424 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 22:25:36,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14809 states. [2024-11-21 22:25:36,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14809 to 14480. [2024-11-21 22:25:36,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14480 states, 14479 states have (on average 1.0249326610953795) internal successors, (14840), 14479 states have internal predecessors, (14840), 0 states have call successors, (0), 0 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 22:25:36,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14480 states to 14480 states and 14840 transitions. [2024-11-21 22:25:36,227 INFO L78 Accepts]: Start accepts. Automaton has 14480 states and 14840 transitions. Word has length 1351 [2024-11-21 22:25:36,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:36,228 INFO L471 AbstractCegarLoop]: Abstraction has 14480 states and 14840 transitions. [2024-11-21 22:25:36,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 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 22:25:36,229 INFO L276 IsEmpty]: Start isEmpty. Operand 14480 states and 14840 transitions. [2024-11-21 22:25:36,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1362 [2024-11-21 22:25:36,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:36,262 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:36,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-21 22:25:36,262 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:36,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:36,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2066986105, now seen corresponding path program 1 times [2024-11-21 22:25:36,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:36,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531090425] [2024-11-21 22:25:36,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:36,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3368 backedges. 2260 proven. 0 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2024-11-21 22:25:37,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:37,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531090425] [2024-11-21 22:25:37,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531090425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:37,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:37,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:25:37,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851540546] [2024-11-21 22:25:37,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:37,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:25:37,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:37,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:25:37,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:25:37,785 INFO L87 Difference]: Start difference. First operand 14480 states and 14840 transitions. Second operand has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 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 22:25:38,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:38,708 INFO L93 Difference]: Finished difference Result 28312 states and 29028 transitions. [2024-11-21 22:25:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 22:25:38,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 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 1361 [2024-11-21 22:25:38,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:38,721 INFO L225 Difference]: With dead ends: 28312 [2024-11-21 22:25:38,722 INFO L226 Difference]: Without dead ends: 14492 [2024-11-21 22:25:38,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:25:38,731 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 218 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:38,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 439 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-21 22:25:38,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14492 states. [2024-11-21 22:25:38,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14492 to 14480. [2024-11-21 22:25:38,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14480 states, 14479 states have (on average 1.0247945300089785) internal successors, (14838), 14479 states have internal predecessors, (14838), 0 states have call successors, (0), 0 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 22:25:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14480 states to 14480 states and 14838 transitions. [2024-11-21 22:25:38,829 INFO L78 Accepts]: Start accepts. Automaton has 14480 states and 14838 transitions. Word has length 1361 [2024-11-21 22:25:38,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:38,829 INFO L471 AbstractCegarLoop]: Abstraction has 14480 states and 14838 transitions. [2024-11-21 22:25:38,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 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 22:25:38,829 INFO L276 IsEmpty]: Start isEmpty. Operand 14480 states and 14838 transitions. [2024-11-21 22:25:38,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1410 [2024-11-21 22:25:38,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:38,851 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:38,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-21 22:25:38,851 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:38,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:38,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1152900176, now seen corresponding path program 1 times [2024-11-21 22:25:38,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:38,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287605962] [2024-11-21 22:25:38,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:38,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4531 backedges. 2436 proven. 0 refuted. 0 times theorem prover too weak. 2095 trivial. 0 not checked. [2024-11-21 22:25:39,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:39,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287605962] [2024-11-21 22:25:39,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287605962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:39,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:39,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:39,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335036709] [2024-11-21 22:25:39,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:39,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:39,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:39,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:39,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:39,906 INFO L87 Difference]: Start difference. First operand 14480 states and 14838 transitions. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 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 22:25:40,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:40,562 INFO L93 Difference]: Finished difference Result 28958 states and 29681 transitions. [2024-11-21 22:25:40,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:40,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 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 1409 [2024-11-21 22:25:40,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:40,576 INFO L225 Difference]: With dead ends: 28958 [2024-11-21 22:25:40,576 INFO L226 Difference]: Without dead ends: 15138 [2024-11-21 22:25:40,585 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 22:25:40,586 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 224 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:40,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 434 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:25:40,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15138 states. [2024-11-21 22:25:40,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15138 to 15138. [2024-11-21 22:25:40,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15138 states, 15137 states have (on average 1.024047037061505) internal successors, (15501), 15137 states have internal predecessors, (15501), 0 states have call successors, (0), 0 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 22:25:40,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15138 states to 15138 states and 15501 transitions. [2024-11-21 22:25:40,695 INFO L78 Accepts]: Start accepts. Automaton has 15138 states and 15501 transitions. Word has length 1409 [2024-11-21 22:25:40,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:40,696 INFO L471 AbstractCegarLoop]: Abstraction has 15138 states and 15501 transitions. [2024-11-21 22:25:40,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 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 22:25:40,696 INFO L276 IsEmpty]: Start isEmpty. Operand 15138 states and 15501 transitions. [2024-11-21 22:25:40,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1433 [2024-11-21 22:25:40,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:40,716 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:25:40,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-21 22:25:40,717 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:40,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:40,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1353976321, now seen corresponding path program 1 times [2024-11-21 22:25:40,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:40,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909732898] [2024-11-21 22:25:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:40,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4335 backedges. 879 proven. 0 refuted. 0 times theorem prover too weak. 3456 trivial. 0 not checked. [2024-11-21 22:25:41,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:41,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909732898] [2024-11-21 22:25:41,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909732898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:41,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:41,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:25:41,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781237546] [2024-11-21 22:25:41,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:41,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:25:41,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:41,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:25:41,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:25:41,899 INFO L87 Difference]: Start difference. First operand 15138 states and 15501 transitions. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 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 22:25:42,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:42,827 INFO L93 Difference]: Finished difference Result 29620 states and 30342 transitions. [2024-11-21 22:25:42,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:25:42,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 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 1432 [2024-11-21 22:25:42,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:42,841 INFO L225 Difference]: With dead ends: 29620 [2024-11-21 22:25:42,842 INFO L226 Difference]: Without dead ends: 15138 [2024-11-21 22:25:42,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:25:42,851 INFO L432 NwaCegarLoop]: 409 mSDtfsCounter, 253 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:42,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 423 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-21 22:25:42,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15138 states. [2024-11-21 22:25:42,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15138 to 14151. [2024-11-21 22:25:42,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14151 states, 14150 states have (on average 1.0180918727915194) internal successors, (14406), 14150 states have internal predecessors, (14406), 0 states have call successors, (0), 0 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 22:25:42,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14151 states to 14151 states and 14406 transitions. [2024-11-21 22:25:42,952 INFO L78 Accepts]: Start accepts. Automaton has 14151 states and 14406 transitions. Word has length 1432 [2024-11-21 22:25:42,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:42,953 INFO L471 AbstractCegarLoop]: Abstraction has 14151 states and 14406 transitions. [2024-11-21 22:25:42,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 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 22:25:42,953 INFO L276 IsEmpty]: Start isEmpty. Operand 14151 states and 14406 transitions. [2024-11-21 22:25:42,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1874 [2024-11-21 22:25:42,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:42,976 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:42,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-21 22:25:42,976 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:42,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:42,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1950534880, now seen corresponding path program 1 times [2024-11-21 22:25:42,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:42,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120488751] [2024-11-21 22:25:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:42,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:45,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6422 backedges. 1646 proven. 0 refuted. 0 times theorem prover too weak. 4776 trivial. 0 not checked. [2024-11-21 22:25:45,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:45,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120488751] [2024-11-21 22:25:45,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120488751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:45,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:45,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:25:45,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324569292] [2024-11-21 22:25:45,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:45,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:25:45,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:45,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:25:45,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:25:45,441 INFO L87 Difference]: Start difference. First operand 14151 states and 14406 transitions. Second operand has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 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 22:25:46,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:46,321 INFO L93 Difference]: Finished difference Result 30940 states and 31517 transitions. [2024-11-21 22:25:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:25:46,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 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 1873 [2024-11-21 22:25:46,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:46,337 INFO L225 Difference]: With dead ends: 30940 [2024-11-21 22:25:46,337 INFO L226 Difference]: Without dead ends: 17441 [2024-11-21 22:25:46,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:25:46,346 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 139 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:46,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 36 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-21 22:25:46,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17441 states. [2024-11-21 22:25:46,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17441 to 14151. [2024-11-21 22:25:46,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14151 states, 14150 states have (on average 1.0178798586572437) internal successors, (14403), 14150 states have internal predecessors, (14403), 0 states have call successors, (0), 0 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 22:25:46,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14151 states to 14151 states and 14403 transitions. [2024-11-21 22:25:46,456 INFO L78 Accepts]: Start accepts. Automaton has 14151 states and 14403 transitions. Word has length 1873 [2024-11-21 22:25:46,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:46,457 INFO L471 AbstractCegarLoop]: Abstraction has 14151 states and 14403 transitions. [2024-11-21 22:25:46,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 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 22:25:46,458 INFO L276 IsEmpty]: Start isEmpty. Operand 14151 states and 14403 transitions. [2024-11-21 22:25:46,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1913 [2024-11-21 22:25:46,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:46,481 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 22:25:46,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-21 22:25:46,481 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:46,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:46,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1753422718, now seen corresponding path program 1 times [2024-11-21 22:25:46,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:46,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934880091] [2024-11-21 22:25:46,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:46,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:47,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6603 backedges. 3458 proven. 0 refuted. 0 times theorem prover too weak. 3145 trivial. 0 not checked. [2024-11-21 22:25:47,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:47,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934880091] [2024-11-21 22:25:47,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934880091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:47,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:25:47,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:25:47,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741901559] [2024-11-21 22:25:47,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:47,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:47,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:47,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:47,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:25:47,981 INFO L87 Difference]: Start difference. First operand 14151 states and 14403 transitions. Second operand has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 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 22:25:48,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:48,716 INFO L93 Difference]: Finished difference Result 30932 states and 31484 transitions. [2024-11-21 22:25:48,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:48,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 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 1912 [2024-11-21 22:25:48,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:48,730 INFO L225 Difference]: With dead ends: 30932 [2024-11-21 22:25:48,731 INFO L226 Difference]: Without dead ends: 17441 [2024-11-21 22:25:48,738 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 22:25:48,739 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 209 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:48,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 44 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 22:25:48,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17441 states. [2024-11-21 22:25:48,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17441 to 15138. [2024-11-21 22:25:48,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15138 states, 15137 states have (on average 1.0174407081984542) internal successors, (15401), 15137 states have internal predecessors, (15401), 0 states have call successors, (0), 0 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 22:25:48,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15138 states to 15138 states and 15401 transitions. [2024-11-21 22:25:48,862 INFO L78 Accepts]: Start accepts. Automaton has 15138 states and 15401 transitions. Word has length 1912 [2024-11-21 22:25:48,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:48,862 INFO L471 AbstractCegarLoop]: Abstraction has 15138 states and 15401 transitions. [2024-11-21 22:25:48,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 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 22:25:48,863 INFO L276 IsEmpty]: Start isEmpty. Operand 15138 states and 15401 transitions. [2024-11-21 22:25:48,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1954 [2024-11-21 22:25:48,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:48,886 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-21 22:25:48,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-21 22:25:48,886 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:48,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:48,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1357154159, now seen corresponding path program 1 times [2024-11-21 22:25:48,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:48,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401541982] [2024-11-21 22:25:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:48,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 7277 backedges. 5380 proven. 41 refuted. 0 times theorem prover too weak. 1856 trivial. 0 not checked. [2024-11-21 22:25:51,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:51,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401541982] [2024-11-21 22:25:51,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401541982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:25:51,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203613649] [2024-11-21 22:25:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:51,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:25:51,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:25:51,395 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 22:25:51,403 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 22:25:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:51,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 22:25:51,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:25:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 7277 backedges. 4038 proven. 0 refuted. 0 times theorem prover too weak. 3239 trivial. 0 not checked. [2024-11-21 22:25:52,619 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:25:52,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203613649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:52,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:25:52,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-21 22:25:52,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335026603] [2024-11-21 22:25:52,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:52,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:52,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:52,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:52,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:25:52,624 INFO L87 Difference]: Start difference. First operand 15138 states and 15401 transitions. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:53,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:53,304 INFO L93 Difference]: Finished difference Result 29616 states and 30138 transitions. [2024-11-21 22:25:53,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:53,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1953 [2024-11-21 22:25:53,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:53,316 INFO L225 Difference]: With dead ends: 29616 [2024-11-21 22:25:53,317 INFO L226 Difference]: Without dead ends: 15138 [2024-11-21 22:25:53,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1957 GetRequests, 1953 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:25:53,325 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 120 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:53,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 426 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 22:25:53,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15138 states. [2024-11-21 22:25:53,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15138 to 15138. [2024-11-21 22:25:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15138 states, 15137 states have (on average 1.0171764550439322) internal successors, (15397), 15137 states have internal predecessors, (15397), 0 states have call successors, (0), 0 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 22:25:53,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15138 states to 15138 states and 15397 transitions. [2024-11-21 22:25:53,434 INFO L78 Accepts]: Start accepts. Automaton has 15138 states and 15397 transitions. Word has length 1953 [2024-11-21 22:25:53,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:53,435 INFO L471 AbstractCegarLoop]: Abstraction has 15138 states and 15397 transitions. [2024-11-21 22:25:53,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:25:53,436 INFO L276 IsEmpty]: Start isEmpty. Operand 15138 states and 15397 transitions. [2024-11-21 22:25:53,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1975 [2024-11-21 22:25:53,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:53,513 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:53,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-21 22:25:53,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:25:53,715 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:53,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:53,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1531808275, now seen corresponding path program 1 times [2024-11-21 22:25:53,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:53,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168519490] [2024-11-21 22:25:53,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:53,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:55,736 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 5050 proven. 140 refuted. 0 times theorem prover too weak. 1912 trivial. 0 not checked. [2024-11-21 22:25:55,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:55,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168519490] [2024-11-21 22:25:55,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168519490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:25:55,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155131938] [2024-11-21 22:25:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:55,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:25:55,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:25:55,739 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 22:25:55,740 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 22:25:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:56,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 2274 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 22:25:56,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:25:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 4241 proven. 0 refuted. 0 times theorem prover too weak. 2861 trivial. 0 not checked. [2024-11-21 22:25:56,356 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:25:56,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155131938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:25:56,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:25:56,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-21 22:25:56,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349193302] [2024-11-21 22:25:56,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:25:56,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:25:56,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:25:56,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:25:56,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:25:56,362 INFO L87 Difference]: Start difference. First operand 15138 states and 15397 transitions. Second operand has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 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 22:25:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:25:57,204 INFO L93 Difference]: Finished difference Result 31590 states and 32136 transitions. [2024-11-21 22:25:57,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:25:57,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 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 1974 [2024-11-21 22:25:57,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:25:57,220 INFO L225 Difference]: With dead ends: 31590 [2024-11-21 22:25:57,221 INFO L226 Difference]: Without dead ends: 17112 [2024-11-21 22:25:57,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1979 GetRequests, 1974 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:25:57,232 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 221 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:25:57,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 427 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-21 22:25:57,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17112 states. [2024-11-21 22:25:57,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17112 to 16125. [2024-11-21 22:25:57,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16125 states, 16124 states have (on average 1.0164351277598611) internal successors, (16389), 16124 states have internal predecessors, (16389), 0 states have call successors, (0), 0 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 22:25:57,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16125 states to 16125 states and 16389 transitions. [2024-11-21 22:25:57,354 INFO L78 Accepts]: Start accepts. Automaton has 16125 states and 16389 transitions. Word has length 1974 [2024-11-21 22:25:57,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:25:57,355 INFO L471 AbstractCegarLoop]: Abstraction has 16125 states and 16389 transitions. [2024-11-21 22:25:57,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 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 22:25:57,355 INFO L276 IsEmpty]: Start isEmpty. Operand 16125 states and 16389 transitions. [2024-11-21 22:25:57,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2006 [2024-11-21 22:25:57,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:25:57,378 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-21 22:25:57,387 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 22:25:57,582 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,SelfDestructingSolverStorable20 [2024-11-21 22:25:57,583 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:25:57,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:25:57,584 INFO L85 PathProgramCache]: Analyzing trace with hash -800797702, now seen corresponding path program 1 times [2024-11-21 22:25:57,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:25:57,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851698084] [2024-11-21 22:25:57,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:57,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:25:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:25:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 5548 proven. 78 refuted. 0 times theorem prover too weak. 1803 trivial. 0 not checked. [2024-11-21 22:25:59,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:25:59,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851698084] [2024-11-21 22:25:59,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851698084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:25:59,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6625303] [2024-11-21 22:25:59,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:25:59,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:25:59,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:25:59,681 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 22:25:59,682 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 22:26:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:26:00,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 2308 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-21 22:26:00,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:26:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 4579 proven. 67 refuted. 0 times theorem prover too weak. 2783 trivial. 0 not checked. [2024-11-21 22:26:23,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:26:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 3571 proven. 0 refuted. 0 times theorem prover too weak. 3858 trivial. 0 not checked. [2024-11-21 22:26:26,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6625303] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-21 22:26:26,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-21 22:26:26,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 4] total 9 [2024-11-21 22:26:26,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900402093] [2024-11-21 22:26:26,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:26:26,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:26:26,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:26:26,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:26:26,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-21 22:26:26,670 INFO L87 Difference]: Start difference. First operand 16125 states and 16389 transitions. Second operand has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 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 22:26:27,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:26:27,420 INFO L93 Difference]: Finished difference Result 33235 states and 33785 transitions. [2024-11-21 22:26:27,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:26:27,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 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 2005 [2024-11-21 22:26:27,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:26:27,437 INFO L225 Difference]: With dead ends: 33235 [2024-11-21 22:26:27,437 INFO L226 Difference]: Without dead ends: 17770 [2024-11-21 22:26:27,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4014 GetRequests, 4007 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-21 22:26:27,449 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 269 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:26:27,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 34 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-21 22:26:27,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17770 states. [2024-11-21 22:26:27,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17770 to 16783. [2024-11-21 22:26:27,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16783 states, 16782 states have (on average 1.0155523775473723) internal successors, (17043), 16782 states have internal predecessors, (17043), 0 states have call successors, (0), 0 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 22:26:27,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16783 states to 16783 states and 17043 transitions. [2024-11-21 22:26:27,577 INFO L78 Accepts]: Start accepts. Automaton has 16783 states and 17043 transitions. Word has length 2005 [2024-11-21 22:26:27,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:26:27,577 INFO L471 AbstractCegarLoop]: Abstraction has 16783 states and 17043 transitions. [2024-11-21 22:26:27,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 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 22:26:27,578 INFO L276 IsEmpty]: Start isEmpty. Operand 16783 states and 17043 transitions. [2024-11-21 22:26:27,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2056 [2024-11-21 22:26:27,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:26:27,602 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-21 22:26:27,611 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 22:26:27,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:26:27,803 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:26:27,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:26:27,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1412426288, now seen corresponding path program 1 times [2024-11-21 22:26:27,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:26:27,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201101700] [2024-11-21 22:26:27,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:26:27,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:26:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat