./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label47.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label47.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 6b006d8e4231a58992706b525e43e67dd3e0df162d0a378f0ac12d9a99bfe781 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:28:53,652 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:28:53,735 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:28:53,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:28:53,740 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:28:53,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:28:53,772 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:28:53,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:28:53,774 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:28:53,775 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:28:53,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:28:53,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:28:53,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:28:53,779 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:28:53,780 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:28:53,780 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:28:53,780 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:28:53,781 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:28:53,783 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:28:53,784 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:28:53,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:28:53,786 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:28:53,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:28:53,787 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:28:53,787 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:28:53,788 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:28:53,788 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:28:53,788 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:28:53,788 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:28:53,789 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:28:53,789 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:28:53,789 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:28:53,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:28:53,790 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:28:53,790 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:28:53,790 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:28:53,791 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:28:53,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:28:53,791 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:28:53,792 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:28:53,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:28:53,793 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:28:53,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b006d8e4231a58992706b525e43e67dd3e0df162d0a378f0ac12d9a99bfe781 [2024-11-09 19:28:54,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:28:54,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:28:54,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:28:54,062 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:28:54,063 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:28:54,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label47.c [2024-11-09 19:28:55,564 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:28:56,002 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:28:56,004 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label47.c [2024-11-09 19:28:56,038 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1508ee7ae/133b18196b72494db184a43d277e0cbf/FLAG05fa2bcbc [2024-11-09 19:28:56,056 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1508ee7ae/133b18196b72494db184a43d277e0cbf [2024-11-09 19:28:56,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:28:56,060 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:28:56,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:28:56,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:28:56,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:28:56,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:28:56" (1/1) ... [2024-11-09 19:28:56,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b76755b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:56, skipping insertion in model container [2024-11-09 19:28:56,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:28:56" (1/1) ... [2024-11-09 19:28:56,178 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:28:56,455 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/Problem12_label47.c[4902,4915] [2024-11-09 19:28:57,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:28:57,222 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:28:57,252 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/Problem12_label47.c[4902,4915] [2024-11-09 19:28:57,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:28:57,675 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:28:57,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:57 WrapperNode [2024-11-09 19:28:57,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:28:57,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:28:57,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:28:57,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:28:57,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:57" (1/1) ... [2024-11-09 19:28:57,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:57" (1/1) ... [2024-11-09 19:28:57,951 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-09 19:28:57,951 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:28:57,952 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:28:57,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:28:57,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:28:57,962 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:57" (1/1) ... [2024-11-09 19:28:57,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:57" (1/1) ... [2024-11-09 19:28:57,999 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:57" (1/1) ... [2024-11-09 19:28:58,254 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]. [2024-11-09 19:28:58,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:57" (1/1) ... [2024-11-09 19:28:58,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:57" (1/1) ... [2024-11-09 19:28:58,376 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:57" (1/1) ... [2024-11-09 19:28:58,401 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:57" (1/1) ... [2024-11-09 19:28:58,422 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:57" (1/1) ... [2024-11-09 19:28:58,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:57" (1/1) ... [2024-11-09 19:28:58,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:28:58,488 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:28:58,489 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:28:58,489 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:28:58,490 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:57" (1/1) ... [2024-11-09 19:28:58,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:28:58,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:28:58,528 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) [2024-11-09 19:28:58,530 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 [2024-11-09 19:28:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:28:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:28:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:28:58,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:28:58,644 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:28:58,646 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:29:04,034 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L4665: havoc calculate_output3_#t~ret11#1; [2024-11-09 19:29:04,035 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1696: havoc calculate_output_#t~ret9#1; [2024-11-09 19:29:04,035 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3175: havoc calculate_output2_#t~ret10#1; [2024-11-09 19:29:04,387 INFO L? ?]: Removed 2039 outVars from TransFormulas that were not future-live. [2024-11-09 19:29:04,387 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:29:04,429 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:29:04,431 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:29:04,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:29:04 BoogieIcfgContainer [2024-11-09 19:29:04,432 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:29:04,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:29:04,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:29:04,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:29:04,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:28:56" (1/3) ... [2024-11-09 19:29:04,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5856b607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:29:04, skipping insertion in model container [2024-11-09 19:29:04,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:57" (2/3) ... [2024-11-09 19:29:04,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5856b607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:29:04, skipping insertion in model container [2024-11-09 19:29:04,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:29:04" (3/3) ... [2024-11-09 19:29:04,442 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label47.c [2024-11-09 19:29:04,459 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:29:04,459 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:29:04,558 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:29:04,565 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;@30b1913c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:29:04,565 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:29:04,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 821 states, 819 states have (on average 2.744810744810745) internal successors, (2248), 820 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:04,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 19:29:04,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:29:04,587 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:29:04,587 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:29:04,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:29:04,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1151518392, now seen corresponding path program 1 times [2024-11-09 19:29:04,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:29:04,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445915842] [2024-11-09 19:29:04,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:29:04,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:29:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:29:04,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:29:04,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:29:04,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445915842] [2024-11-09 19:29:04,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445915842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:29:04,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:29:04,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:29:04,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515602464] [2024-11-09 19:29:04,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:29:04,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:29:04,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:29:04,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:29:04,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:29:04,984 INFO L87 Difference]: Start difference. First operand has 821 states, 819 states have (on average 2.744810744810745) internal successors, (2248), 820 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:09,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:29:09,641 INFO L93 Difference]: Finished difference Result 2394 states and 6675 transitions. [2024-11-09 19:29:09,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:29:09,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-11-09 19:29:09,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:29:09,673 INFO L225 Difference]: With dead ends: 2394 [2024-11-09 19:29:09,673 INFO L226 Difference]: Without dead ends: 1509 [2024-11-09 19:29:09,678 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 [2024-11-09 19:29:09,681 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 1478 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3860 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 4624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 3860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:29:09,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 116 Invalid, 4624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 3860 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-09 19:29:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2024-11-09 19:29:09,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1509. [2024-11-09 19:29:09,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 2.7659151193633953) internal successors, (4171), 1508 states have internal predecessors, (4171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 4171 transitions. [2024-11-09 19:29:09,802 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 4171 transitions. Word has length 40 [2024-11-09 19:29:09,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:29:09,803 INFO L471 AbstractCegarLoop]: Abstraction has 1509 states and 4171 transitions. [2024-11-09 19:29:09,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:09,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 4171 transitions. [2024-11-09 19:29:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-09 19:29:09,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:29:09,807 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:29:09,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:29:09,807 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:29:09,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:29:09,808 INFO L85 PathProgramCache]: Analyzing trace with hash -546612648, now seen corresponding path program 1 times [2024-11-09 19:29:09,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:29:09,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658395698] [2024-11-09 19:29:09,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:29:09,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:29:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:29:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:29:10,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:29:10,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658395698] [2024-11-09 19:29:10,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658395698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:29:10,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:29:10,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:29:10,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708396748] [2024-11-09 19:29:10,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:29:10,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:29:10,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:29:10,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:29:10,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:29:10,198 INFO L87 Difference]: Start difference. First operand 1509 states and 4171 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:29:14,795 INFO L93 Difference]: Finished difference Result 4523 states and 12509 transitions. [2024-11-09 19:29:14,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:29:14,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2024-11-09 19:29:14,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:29:14,809 INFO L225 Difference]: With dead ends: 4523 [2024-11-09 19:29:14,810 INFO L226 Difference]: Without dead ends: 3016 [2024-11-09 19:29:14,812 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 [2024-11-09 19:29:14,813 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 1417 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3622 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 4273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 3622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:29:14,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 478 Invalid, 4273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 3622 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-09 19:29:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2024-11-09 19:29:14,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 3013. [2024-11-09 19:29:14,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3012 states have (on average 2.4794156706507304) internal successors, (7468), 3012 states have internal predecessors, (7468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:14,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 7468 transitions. [2024-11-09 19:29:14,884 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 7468 transitions. Word has length 106 [2024-11-09 19:29:14,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:29:14,885 INFO L471 AbstractCegarLoop]: Abstraction has 3013 states and 7468 transitions. [2024-11-09 19:29:14,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:14,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 7468 transitions. [2024-11-09 19:29:14,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-09 19:29:14,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:29:14,891 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:29:14,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:29:14,891 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:29:14,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:29:14,892 INFO L85 PathProgramCache]: Analyzing trace with hash -2060768428, now seen corresponding path program 1 times [2024-11-09 19:29:14,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:29:14,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293904021] [2024-11-09 19:29:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:29:14,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:29:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:29:15,251 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:29:15,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:29:15,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293904021] [2024-11-09 19:29:15,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293904021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:29:15,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:29:15,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:29:15,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499798178] [2024-11-09 19:29:15,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:29:15,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:29:15,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:29:15,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:29:15,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:29:15,259 INFO L87 Difference]: Start difference. First operand 3013 states and 7468 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:21,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:29:21,433 INFO L93 Difference]: Finished difference Result 9784 states and 24034 transitions. [2024-11-09 19:29:21,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:29:21,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2024-11-09 19:29:21,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:29:21,468 INFO L225 Difference]: With dead ends: 9784 [2024-11-09 19:29:21,470 INFO L226 Difference]: Without dead ends: 6773 [2024-11-09 19:29:21,477 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 [2024-11-09 19:29:21,479 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 4316 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 7419 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 8250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 7419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:29:21,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4316 Valid, 410 Invalid, 8250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 7419 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-09 19:29:21,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2024-11-09 19:29:21,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6773. [2024-11-09 19:29:21,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6773 states, 6772 states have (on average 2.340224453632605) internal successors, (15848), 6772 states have internal predecessors, (15848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:21,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 15848 transitions. [2024-11-09 19:29:21,630 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 15848 transitions. Word has length 107 [2024-11-09 19:29:21,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:29:21,633 INFO L471 AbstractCegarLoop]: Abstraction has 6773 states and 15848 transitions. [2024-11-09 19:29:21,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 15848 transitions. [2024-11-09 19:29:21,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-09 19:29:21,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:29:21,639 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:29:21,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:29:21,640 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:29:21,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:29:21,640 INFO L85 PathProgramCache]: Analyzing trace with hash 2144367110, now seen corresponding path program 1 times [2024-11-09 19:29:21,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:29:21,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382162205] [2024-11-09 19:29:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:29:21,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:29:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:29:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:29:21,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:29:21,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382162205] [2024-11-09 19:29:21,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382162205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:29:21,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:29:21,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:29:21,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387473108] [2024-11-09 19:29:21,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:29:21,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:29:21,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:29:21,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:29:21,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:29:21,884 INFO L87 Difference]: Start difference. First operand 6773 states and 15848 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:26,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:29:26,067 INFO L93 Difference]: Finished difference Result 16593 states and 38214 transitions. [2024-11-09 19:29:26,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:29:26,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2024-11-09 19:29:26,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:29:26,100 INFO L225 Difference]: With dead ends: 16593 [2024-11-09 19:29:26,100 INFO L226 Difference]: Without dead ends: 9784 [2024-11-09 19:29:26,110 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 [2024-11-09 19:29:26,115 INFO L432 NwaCegarLoop]: 698 mSDtfsCounter, 1386 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 5149 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 5421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 5149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:29:26,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 717 Invalid, 5421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 5149 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-09 19:29:26,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9784 states. [2024-11-09 19:29:26,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9784 to 9781. [2024-11-09 19:29:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9781 states, 9780 states have (on average 2.219836400817996) internal successors, (21710), 9780 states have internal predecessors, (21710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:26,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9781 states to 9781 states and 21710 transitions. [2024-11-09 19:29:26,338 INFO L78 Accepts]: Start accepts. Automaton has 9781 states and 21710 transitions. Word has length 112 [2024-11-09 19:29:26,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:29:26,339 INFO L471 AbstractCegarLoop]: Abstraction has 9781 states and 21710 transitions. [2024-11-09 19:29:26,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:26,339 INFO L276 IsEmpty]: Start isEmpty. Operand 9781 states and 21710 transitions. [2024-11-09 19:29:26,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-09 19:29:26,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:29:26,342 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:29:26,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:29:26,342 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:29:26,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:29:26,343 INFO L85 PathProgramCache]: Analyzing trace with hash -482014360, now seen corresponding path program 1 times [2024-11-09 19:29:26,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:29:26,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080362366] [2024-11-09 19:29:26,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:29:26,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:29:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:29:26,848 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 19:29:26,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:29:26,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080362366] [2024-11-09 19:29:26,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080362366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:29:26,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357859943] [2024-11-09 19:29:26,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:29:26,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:29:26,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:29:26,852 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) [2024-11-09 19:29:26,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:29:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:29:26,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:29:26,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:29:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 19:29:27,241 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:29:27,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357859943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:29:27,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:29:27,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 19:29:27,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520344583] [2024-11-09 19:29:27,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:29:27,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:29:27,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:29:27,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:29:27,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:29:27,243 INFO L87 Difference]: Start difference. First operand 9781 states and 21710 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:30,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:29:30,492 INFO L93 Difference]: Finished difference Result 24824 states and 54736 transitions. [2024-11-09 19:29:30,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:29:30,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2024-11-09 19:29:30,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:29:30,525 INFO L225 Difference]: With dead ends: 24824 [2024-11-09 19:29:30,526 INFO L226 Difference]: Without dead ends: 15045 [2024-11-09 19:29:30,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:29:30,626 INFO L432 NwaCegarLoop]: 397 mSDtfsCounter, 1349 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3573 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 3942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 3573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:29:30,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 406 Invalid, 3942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 3573 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 19:29:30,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15045 states. [2024-11-09 19:29:30,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15045 to 14293. [2024-11-09 19:29:30,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14293 states, 14292 states have (on average 2.171004757906521) internal successors, (31028), 14292 states have internal predecessors, (31028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14293 states to 14293 states and 31028 transitions. [2024-11-09 19:29:30,960 INFO L78 Accepts]: Start accepts. Automaton has 14293 states and 31028 transitions. Word has length 186 [2024-11-09 19:29:30,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:29:30,961 INFO L471 AbstractCegarLoop]: Abstraction has 14293 states and 31028 transitions. [2024-11-09 19:29:30,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:30,962 INFO L276 IsEmpty]: Start isEmpty. Operand 14293 states and 31028 transitions. [2024-11-09 19:29:30,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-09 19:29:30,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:29:30,968 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:29:30,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:29:31,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:29:31,173 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:29:31,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:29:31,174 INFO L85 PathProgramCache]: Analyzing trace with hash 423781810, now seen corresponding path program 1 times [2024-11-09 19:29:31,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:29:31,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231471894] [2024-11-09 19:29:31,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:29:31,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:29:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:29:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:29:31,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:29:31,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231471894] [2024-11-09 19:29:31,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231471894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:29:31,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:29:31,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:29:31,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797049440] [2024-11-09 19:29:31,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:29:31,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:29:31,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:29:31,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:29:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:29:31,623 INFO L87 Difference]: Start difference. First operand 14293 states and 31028 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:36,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:29:36,108 INFO L93 Difference]: Finished difference Result 37687 states and 82756 transitions. [2024-11-09 19:29:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:29:36,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2024-11-09 19:29:36,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:29:36,157 INFO L225 Difference]: With dead ends: 37687 [2024-11-09 19:29:36,158 INFO L226 Difference]: Without dead ends: 23320 [2024-11-09 19:29:36,174 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 [2024-11-09 19:29:36,175 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 1531 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 5488 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 6041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 5488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:29:36,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 427 Invalid, 6041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 5488 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-09 19:29:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23320 states. [2024-11-09 19:29:36,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23320 to 23317. [2024-11-09 19:29:36,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23317 states, 23316 states have (on average 2.1298679018699604) internal successors, (49660), 23316 states have internal predecessors, (49660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:36,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23317 states to 23317 states and 49660 transitions. [2024-11-09 19:29:36,507 INFO L78 Accepts]: Start accepts. Automaton has 23317 states and 49660 transitions. Word has length 254 [2024-11-09 19:29:36,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:29:36,508 INFO L471 AbstractCegarLoop]: Abstraction has 23317 states and 49660 transitions. [2024-11-09 19:29:36,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 23317 states and 49660 transitions. [2024-11-09 19:29:36,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-09 19:29:36,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:29:36,512 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:29:36,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:29:36,512 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:29:36,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:29:36,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1924427588, now seen corresponding path program 1 times [2024-11-09 19:29:36,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:29:36,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765966122] [2024-11-09 19:29:36,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:29:36,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:29:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:29:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 42 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:29:37,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:29:37,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765966122] [2024-11-09 19:29:37,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765966122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:29:37,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615153567] [2024-11-09 19:29:37,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:29:37,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:29:37,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:29:37,008 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) [2024-11-09 19:29:37,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:29:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:29:37,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:29:37,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:29:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 19:29:37,243 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:29:37,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615153567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:29:37,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:29:37,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 19:29:37,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87739062] [2024-11-09 19:29:37,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:29:37,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:29:37,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:29:37,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:29:37,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:29:37,246 INFO L87 Difference]: Start difference. First operand 23317 states and 49660 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:41,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:29:41,039 INFO L93 Difference]: Finished difference Result 55656 states and 120155 transitions. [2024-11-09 19:29:41,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:29:41,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 272 [2024-11-09 19:29:41,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:29:41,110 INFO L225 Difference]: With dead ends: 55656 [2024-11-09 19:29:41,110 INFO L226 Difference]: Without dead ends: 32341 [2024-11-09 19:29:41,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:29:41,142 INFO L432 NwaCegarLoop]: 1533 mSDtfsCounter, 1473 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 4395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:29:41,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1543 Invalid, 4395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [782 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 19:29:41,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32341 states. [2024-11-09 19:29:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32341 to 32341. [2024-11-09 19:29:41,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32341 states, 32340 states have (on average 2.16413110698825) internal successors, (69988), 32340 states have internal predecessors, (69988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:41,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32341 states to 32341 states and 69988 transitions. [2024-11-09 19:29:41,702 INFO L78 Accepts]: Start accepts. Automaton has 32341 states and 69988 transitions. Word has length 272 [2024-11-09 19:29:41,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:29:41,702 INFO L471 AbstractCegarLoop]: Abstraction has 32341 states and 69988 transitions. [2024-11-09 19:29:41,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:41,703 INFO L276 IsEmpty]: Start isEmpty. Operand 32341 states and 69988 transitions. [2024-11-09 19:29:41,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-09 19:29:41,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:29:41,707 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:29:41,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:29:41,908 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,SelfDestructingSolverStorable6 [2024-11-09 19:29:41,909 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:29:41,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:29:41,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1428388304, now seen corresponding path program 1 times [2024-11-09 19:29:41,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:29:41,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839794851] [2024-11-09 19:29:41,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:29:41,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:29:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:29:42,100 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-09 19:29:42,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:29:42,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839794851] [2024-11-09 19:29:42,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839794851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:29:42,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:29:42,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:29:42,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054729407] [2024-11-09 19:29:42,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:29:42,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:29:42,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:29:42,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:29:42,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:29:42,103 INFO L87 Difference]: Start difference. First operand 32341 states and 69988 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:46,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:29:46,266 INFO L93 Difference]: Finished difference Result 90248 states and 196375 transitions. [2024-11-09 19:29:46,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:29:46,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 276 [2024-11-09 19:29:46,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:29:46,392 INFO L225 Difference]: With dead ends: 90248 [2024-11-09 19:29:46,393 INFO L226 Difference]: Without dead ends: 57909 [2024-11-09 19:29:46,423 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 [2024-11-09 19:29:46,424 INFO L432 NwaCegarLoop]: 438 mSDtfsCounter, 1372 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3340 mSolverCounterSat, 837 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 4177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 837 IncrementalHoareTripleChecker+Valid, 3340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:29:46,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 445 Invalid, 4177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [837 Valid, 3340 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-09 19:29:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57909 states. [2024-11-09 19:29:47,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57909 to 50389. [2024-11-09 19:29:47,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50389 states, 50388 states have (on average 2.1141938556799236) internal successors, (106530), 50388 states have internal predecessors, (106530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:47,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50389 states to 50389 states and 106530 transitions. [2024-11-09 19:29:47,623 INFO L78 Accepts]: Start accepts. Automaton has 50389 states and 106530 transitions. Word has length 276 [2024-11-09 19:29:47,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:29:47,623 INFO L471 AbstractCegarLoop]: Abstraction has 50389 states and 106530 transitions. [2024-11-09 19:29:47,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:47,624 INFO L276 IsEmpty]: Start isEmpty. Operand 50389 states and 106530 transitions. [2024-11-09 19:29:47,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-09 19:29:47,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:29:47,648 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-09 19:29:47,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:29:47,652 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:29:47,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:29:47,653 INFO L85 PathProgramCache]: Analyzing trace with hash 729354232, now seen corresponding path program 1 times [2024-11-09 19:29:47,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:29:47,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486838148] [2024-11-09 19:29:47,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:29:47,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:29:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:29:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 289 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 19:29:48,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:29:48,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486838148] [2024-11-09 19:29:48,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486838148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:29:48,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:29:48,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:29:48,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928716538] [2024-11-09 19:29:48,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:29:48,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:29:48,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:29:48,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:29:48,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:29:48,091 INFO L87 Difference]: Start difference. First operand 50389 states and 106530 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:29:52,170 INFO L93 Difference]: Finished difference Result 124088 states and 263623 transitions. [2024-11-09 19:29:52,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:29:52,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 366 [2024-11-09 19:29:52,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:29:52,492 INFO L225 Difference]: With dead ends: 124088 [2024-11-09 19:29:52,492 INFO L226 Difference]: Without dead ends: 73701 [2024-11-09 19:29:52,553 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 [2024-11-09 19:29:52,555 INFO L432 NwaCegarLoop]: 1895 mSDtfsCounter, 1360 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3614 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 4116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 3614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:29:52,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 1905 Invalid, 4116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 3614 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 19:29:52,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73701 states. [2024-11-09 19:29:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73701 to 68437. [2024-11-09 19:29:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68437 states, 68436 states have (on average 2.0778683733707406) internal successors, (142201), 68436 states have internal predecessors, (142201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:53,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68437 states to 68437 states and 142201 transitions. [2024-11-09 19:29:53,821 INFO L78 Accepts]: Start accepts. Automaton has 68437 states and 142201 transitions. Word has length 366 [2024-11-09 19:29:53,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:29:53,822 INFO L471 AbstractCegarLoop]: Abstraction has 68437 states and 142201 transitions. [2024-11-09 19:29:53,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand 68437 states and 142201 transitions. [2024-11-09 19:29:53,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-09 19:29:53,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:29:53,839 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:29:53,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:29:53,844 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:29:53,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:29:53,848 INFO L85 PathProgramCache]: Analyzing trace with hash 7863138, now seen corresponding path program 1 times [2024-11-09 19:29:53,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:29:53,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767707671] [2024-11-09 19:29:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:29:53,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:29:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:29:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 19:29:54,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:29:54,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767707671] [2024-11-09 19:29:54,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767707671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:29:54,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:29:54,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:29:54,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863534350] [2024-11-09 19:29:54,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:29:54,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:29:54,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:29:54,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:29:54,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:29:54,350 INFO L87 Difference]: Start difference. First operand 68437 states and 142201 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:29:58,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:29:58,811 INFO L93 Difference]: Finished difference Result 169960 states and 355188 transitions. [2024-11-09 19:29:58,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:29:58,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 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 381 [2024-11-09 19:29:58,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:29:58,991 INFO L225 Difference]: With dead ends: 169960 [2024-11-09 19:29:58,992 INFO L226 Difference]: Without dead ends: 101525 [2024-11-09 19:29:59,034 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 [2024-11-09 19:29:59,035 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 1353 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3639 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 4270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 3639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:29:59,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 532 Invalid, 4270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 3639 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 19:29:59,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101525 states. [2024-11-09 19:30:00,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101525 to 100773. [2024-11-09 19:30:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100773 states, 100772 states have (on average 2.059470884769579) internal successors, (207537), 100772 states have internal predecessors, (207537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100773 states to 100773 states and 207537 transitions. [2024-11-09 19:30:00,936 INFO L78 Accepts]: Start accepts. Automaton has 100773 states and 207537 transitions. Word has length 381 [2024-11-09 19:30:00,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:30:00,937 INFO L471 AbstractCegarLoop]: Abstraction has 100773 states and 207537 transitions. [2024-11-09 19:30:00,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:00,937 INFO L276 IsEmpty]: Start isEmpty. Operand 100773 states and 207537 transitions. [2024-11-09 19:30:00,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-09 19:30:00,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:30:00,956 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-09 19:30:00,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:30:00,956 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:30:00,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:30:00,957 INFO L85 PathProgramCache]: Analyzing trace with hash -968127592, now seen corresponding path program 1 times [2024-11-09 19:30:00,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:30:00,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233437055] [2024-11-09 19:30:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:30:00,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:30:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:30:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-09 19:30:01,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:30:01,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233437055] [2024-11-09 19:30:01,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233437055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:30:01,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:30:01,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:30:01,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770719205] [2024-11-09 19:30:01,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:30:01,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:30:01,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:30:01,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:30:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:30:01,381 INFO L87 Difference]: Start difference. First operand 100773 states and 207537 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:06,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:30:06,115 INFO L93 Difference]: Finished difference Result 228616 states and 472586 transitions. [2024-11-09 19:30:06,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:30:06,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 398 [2024-11-09 19:30:06,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:30:06,337 INFO L225 Difference]: With dead ends: 228616 [2024-11-09 19:30:06,337 INFO L226 Difference]: Without dead ends: 127845 [2024-11-09 19:30:06,670 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 [2024-11-09 19:30:06,670 INFO L432 NwaCegarLoop]: 1951 mSDtfsCounter, 1353 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3587 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 4118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 3587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:30:06,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 1961 Invalid, 4118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 3587 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 19:30:06,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127845 states. [2024-11-09 19:30:08,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127845 to 125589. [2024-11-09 19:30:08,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125589 states, 125588 states have (on average 2.0249227633213365) internal successors, (254306), 125588 states have internal predecessors, (254306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125589 states to 125589 states and 254306 transitions. [2024-11-09 19:30:08,885 INFO L78 Accepts]: Start accepts. Automaton has 125589 states and 254306 transitions. Word has length 398 [2024-11-09 19:30:08,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:30:08,885 INFO L471 AbstractCegarLoop]: Abstraction has 125589 states and 254306 transitions. [2024-11-09 19:30:08,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:08,885 INFO L276 IsEmpty]: Start isEmpty. Operand 125589 states and 254306 transitions. [2024-11-09 19:30:08,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-11-09 19:30:08,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:30:08,891 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:30:08,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:30:08,892 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:30:08,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:30:08,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1976962036, now seen corresponding path program 1 times [2024-11-09 19:30:08,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:30:08,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107394123] [2024-11-09 19:30:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:30:08,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:30:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:30:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 299 proven. 6 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-09 19:30:09,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:30:09,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107394123] [2024-11-09 19:30:09,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107394123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:30:09,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312671375] [2024-11-09 19:30:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:30:09,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:30:09,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:30:09,853 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) [2024-11-09 19:30:09,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:30:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:30:10,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:30:10,033 INFO L278 TraceCheckSpWp]: Computing forward predicates...