./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label48.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 6abe6deda42e5cd6457f2c2e337625778fbe4d0886f20421ed4af9df8a9f44a2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 03:56:26,932 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:56:27,018 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:56:27,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:56:27,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:56:27,044 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:56:27,044 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:56:27,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:56:27,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:56:27,046 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:56:27,046 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:56:27,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:56:27,048 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:56:27,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:56:27,050 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:56:27,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:56:27,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:56:27,051 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:56:27,053 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:56:27,053 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:56:27,054 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:56:27,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:56:27,055 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:56:27,055 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:56:27,055 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:56:27,056 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:56:27,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:56:27,056 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:56:27,057 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:56:27,057 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:56:27,057 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:56:27,058 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:56:27,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:56:27,058 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:56:27,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:56:27,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:56:27,059 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:56:27,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:56:27,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:56:27,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:56:27,060 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:56:27,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:56:27,062 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6abe6deda42e5cd6457f2c2e337625778fbe4d0886f20421ed4af9df8a9f44a2 [2024-11-16 03:56:27,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:56:27,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:56:27,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:56:27,370 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:56:27,370 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:56:27,372 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label48.c [2024-11-16 03:56:28,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:56:29,298 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:56:29,301 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label48.c [2024-11-16 03:56:29,342 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efdf81b67/b761e796302d4de09f2a6849e783053a/FLAG8b8b9ddc8 [2024-11-16 03:56:29,358 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efdf81b67/b761e796302d4de09f2a6849e783053a [2024-11-16 03:56:29,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:56:29,364 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:56:29,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:56:29,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:56:29,373 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:56:29,374 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:56:29" (1/1) ... [2024-11-16 03:56:29,375 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c67f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:29, skipping insertion in model container [2024-11-16 03:56:29,375 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:56:29" (1/1) ... [2024-11-16 03:56:29,524 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:56:29,751 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_label48.c[1668,1681] [2024-11-16 03:56:30,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:56:30,512 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:56:30,529 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_label48.c[1668,1681] [2024-11-16 03:56:30,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:56:30,946 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:56:30,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:30 WrapperNode [2024-11-16 03:56:30,948 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:56:30,949 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:56:30,949 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:56:30,949 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:56:30,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:30" (1/1) ... [2024-11-16 03:56:31,010 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:30" (1/1) ... [2024-11-16 03:56:31,339 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-16 03:56:31,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:56:31,340 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:56:31,340 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:56:31,340 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:56:31,350 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:30" (1/1) ... [2024-11-16 03:56:31,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:30" (1/1) ... [2024-11-16 03:56:31,385 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:30" (1/1) ... [2024-11-16 03:56:31,575 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 03:56:31,576 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:30" (1/1) ... [2024-11-16 03:56:31,576 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:30" (1/1) ... [2024-11-16 03:56:31,737 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:30" (1/1) ... [2024-11-16 03:56:31,751 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:30" (1/1) ... [2024-11-16 03:56:31,768 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:30" (1/1) ... [2024-11-16 03:56:31,786 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:30" (1/1) ... [2024-11-16 03:56:31,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 03:56:31,886 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 03:56:31,886 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 03:56:31,886 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 03:56:31,887 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:30" (1/1) ... [2024-11-16 03:56:31,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:56:31,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:56:31,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 03:56:31,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 03:56:31,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 03:56:31,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 03:56:31,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 03:56:31,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 03:56:32,023 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 03:56:32,026 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 03:56:36,324 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L4665: havoc calculate_output3_#t~ret11#1; [2024-11-16 03:56:36,325 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1696: havoc calculate_output_#t~ret9#1; [2024-11-16 03:56:36,325 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3175: havoc calculate_output2_#t~ret10#1; [2024-11-16 03:56:36,573 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-16 03:56:36,573 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 03:56:36,615 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 03:56:36,619 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 03:56:36,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:56:36 BoogieIcfgContainer [2024-11-16 03:56:36,620 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 03:56:36,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 03:56:36,624 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 03:56:36,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 03:56:36,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:56:29" (1/3) ... [2024-11-16 03:56:36,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c695438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:56:36, skipping insertion in model container [2024-11-16 03:56:36,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:30" (2/3) ... [2024-11-16 03:56:36,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c695438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:56:36, skipping insertion in model container [2024-11-16 03:56:36,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:56:36" (3/3) ... [2024-11-16 03:56:36,631 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label48.c [2024-11-16 03:56:36,649 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 03:56:36,650 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 03:56:36,752 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 03:56:36,762 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;@1029adb3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 03:56:36,763 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 03:56:36,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 821 states, 819 states have (on average 1.9145299145299146) internal successors, (1568), 820 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:56:36,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-16 03:56:36,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:56:36,780 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:56:36,780 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:56:36,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:56:36,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1252115442, now seen corresponding path program 1 times [2024-11-16 03:56:36,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:56:36,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522040679] [2024-11-16 03:56:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:56:36,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:56:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:56:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:56:37,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:56:37,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522040679] [2024-11-16 03:56:37,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522040679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:56:37,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:56:37,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:56:37,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367041899] [2024-11-16 03:56:37,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:56:37,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:56:37,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:56:37,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:56:37,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:56:37,091 INFO L87 Difference]: Start difference. First operand has 821 states, 819 states have (on average 1.9145299145299146) internal successors, (1568), 820 states have internal predecessors, (1568), 0 states have call successors, (0), 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 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:56:40,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:56:40,421 INFO L93 Difference]: Finished difference Result 2394 states and 4635 transitions. [2024-11-16 03:56:40,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:56:40,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-11-16 03:56:40,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:56:40,455 INFO L225 Difference]: With dead ends: 2394 [2024-11-16 03:56:40,456 INFO L226 Difference]: Without dead ends: 1509 [2024-11-16 03:56:40,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:56:40,471 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 824 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-16 03:56:40,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 485 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-16 03:56:40,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2024-11-16 03:56:40,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1509. [2024-11-16 03:56:40,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 1.6372679045092837) internal successors, (2469), 1508 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:56:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2469 transitions. [2024-11-16 03:56:40,602 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2469 transitions. Word has length 12 [2024-11-16 03:56:40,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:56:40,602 INFO L471 AbstractCegarLoop]: Abstraction has 1509 states and 2469 transitions. [2024-11-16 03:56:40,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:56:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2469 transitions. [2024-11-16 03:56:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-16 03:56:40,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:56:40,605 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:56:40,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 03:56:40,605 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:56:40,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:56:40,606 INFO L85 PathProgramCache]: Analyzing trace with hash 577047776, now seen corresponding path program 1 times [2024-11-16 03:56:40,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:56:40,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915853426] [2024-11-16 03:56:40,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:56:40,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:56:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:56:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:56:40,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:56:40,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915853426] [2024-11-16 03:56:40,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915853426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:56:40,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:56:40,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:56:40,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301291152] [2024-11-16 03:56:40,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:56:40,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:56:40,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:56:40,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:56:40,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:56:40,836 INFO L87 Difference]: Start difference. First operand 1509 states and 2469 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:56:44,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:56:44,243 INFO L93 Difference]: Finished difference Result 3768 states and 6373 transitions. [2024-11-16 03:56:44,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:56:44,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2024-11-16 03:56:44,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:56:44,253 INFO L225 Difference]: With dead ends: 3768 [2024-11-16 03:56:44,253 INFO L226 Difference]: Without dead ends: 2261 [2024-11-16 03:56:44,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:56:44,257 INFO L432 NwaCegarLoop]: 1205 mSDtfsCounter, 853 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2106 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:56:44,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1215 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2106 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-16 03:56:44,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2024-11-16 03:56:44,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2261. [2024-11-16 03:56:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 2260 states have (on average 1.5393805309734514) internal successors, (3479), 2260 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:56:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3479 transitions. [2024-11-16 03:56:44,312 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3479 transitions. Word has length 84 [2024-11-16 03:56:44,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:56:44,313 INFO L471 AbstractCegarLoop]: Abstraction has 2261 states and 3479 transitions. [2024-11-16 03:56:44,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:56:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3479 transitions. [2024-11-16 03:56:44,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 03:56:44,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:56:44,316 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:56:44,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 03:56:44,316 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:56:44,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:56:44,317 INFO L85 PathProgramCache]: Analyzing trace with hash 903902447, now seen corresponding path program 1 times [2024-11-16 03:56:44,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:56:44,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143753369] [2024-11-16 03:56:44,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:56:44,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:56:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:56:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:56:44,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:56:44,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143753369] [2024-11-16 03:56:44,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143753369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:56:44,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:56:44,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:56:44,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344093891] [2024-11-16 03:56:44,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:56:44,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:56:44,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:56:44,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:56:44,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:56:44,527 INFO L87 Difference]: Start difference. First operand 2261 states and 3479 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:56:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:56:47,769 INFO L93 Difference]: Finished difference Result 6776 states and 10431 transitions. [2024-11-16 03:56:47,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:56:47,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2024-11-16 03:56:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:56:47,787 INFO L225 Difference]: With dead ends: 6776 [2024-11-16 03:56:47,787 INFO L226 Difference]: Without dead ends: 4517 [2024-11-16 03:56:47,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:56:47,793 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 776 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:56:47,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 450 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-16 03:56:47,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2024-11-16 03:56:47,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 4517. [2024-11-16 03:56:47,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 4516 states have (on average 1.371124889282551) internal successors, (6192), 4516 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:56:47,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 6192 transitions. [2024-11-16 03:56:47,875 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 6192 transitions. Word has length 87 [2024-11-16 03:56:47,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:56:47,876 INFO L471 AbstractCegarLoop]: Abstraction has 4517 states and 6192 transitions. [2024-11-16 03:56:47,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:56:47,876 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 6192 transitions. [2024-11-16 03:56:47,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-16 03:56:47,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:56:47,878 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:56:47,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 03:56:47,879 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:56:47,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:56:47,880 INFO L85 PathProgramCache]: Analyzing trace with hash 91964871, now seen corresponding path program 1 times [2024-11-16 03:56:47,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:56:47,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236991384] [2024-11-16 03:56:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:56:47,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:56:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:56:48,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:56:48,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:56:48,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236991384] [2024-11-16 03:56:48,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236991384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:56:48,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:56:48,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:56:48,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848081381] [2024-11-16 03:56:48,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:56:48,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:56:48,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:56:48,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:56:48,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:56:48,039 INFO L87 Difference]: Start difference. First operand 4517 states and 6192 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:56:50,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:56:50,821 INFO L93 Difference]: Finished difference Result 13547 states and 18572 transitions. [2024-11-16 03:56:50,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:56:50,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2024-11-16 03:56:50,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:56:50,854 INFO L225 Difference]: With dead ends: 13547 [2024-11-16 03:56:50,855 INFO L226 Difference]: Without dead ends: 9032 [2024-11-16 03:56:50,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:56:50,869 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 902 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:56:50,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 356 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-16 03:56:50,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9032 states. [2024-11-16 03:56:51,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9032 to 9029. [2024-11-16 03:56:51,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9029 states, 9028 states have (on average 1.2656180770934868) internal successors, (11426), 9028 states have internal predecessors, (11426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:56:51,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9029 states to 9029 states and 11426 transitions. [2024-11-16 03:56:51,040 INFO L78 Accepts]: Start accepts. Automaton has 9029 states and 11426 transitions. Word has length 103 [2024-11-16 03:56:51,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:56:51,041 INFO L471 AbstractCegarLoop]: Abstraction has 9029 states and 11426 transitions. [2024-11-16 03:56:51,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:56:51,042 INFO L276 IsEmpty]: Start isEmpty. Operand 9029 states and 11426 transitions. [2024-11-16 03:56:51,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-16 03:56:51,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:56:51,044 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:56:51,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 03:56:51,044 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:56:51,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:56:51,045 INFO L85 PathProgramCache]: Analyzing trace with hash 791281946, now seen corresponding path program 1 times [2024-11-16 03:56:51,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:56:51,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770577474] [2024-11-16 03:56:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:56:51,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:56:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:56:51,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:56:51,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:56:51,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770577474] [2024-11-16 03:56:51,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770577474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:56:51,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:56:51,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:56:51,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175056163] [2024-11-16 03:56:51,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:56:51,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:56:51,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:56:51,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:56:51,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:56:51,295 INFO L87 Difference]: Start difference. First operand 9029 states and 11426 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 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) [2024-11-16 03:56:54,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:56:54,129 INFO L93 Difference]: Finished difference Result 27083 states and 34274 transitions. [2024-11-16 03:56:54,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:56:54,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 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 [2024-11-16 03:56:54,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:56:54,182 INFO L225 Difference]: With dead ends: 27083 [2024-11-16 03:56:54,182 INFO L226 Difference]: Without dead ends: 18056 [2024-11-16 03:56:54,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:56:54,198 INFO L432 NwaCegarLoop]: 627 mSDtfsCounter, 703 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:56:54,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 636 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-16 03:56:54,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18056 states. [2024-11-16 03:56:54,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18056 to 18053. [2024-11-16 03:56:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18053 states, 18052 states have (on average 1.1802570352315533) internal successors, (21306), 18052 states have internal predecessors, (21306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:56:54,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18053 states to 18053 states and 21306 transitions. [2024-11-16 03:56:54,505 INFO L78 Accepts]: Start accepts. Automaton has 18053 states and 21306 transitions. Word has length 112 [2024-11-16 03:56:54,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:56:54,505 INFO L471 AbstractCegarLoop]: Abstraction has 18053 states and 21306 transitions. [2024-11-16 03:56:54,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 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) [2024-11-16 03:56:54,507 INFO L276 IsEmpty]: Start isEmpty. Operand 18053 states and 21306 transitions. [2024-11-16 03:56:54,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-16 03:56:54,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:56:54,511 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:56:54,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 03:56:54,511 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:56:54,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:56:54,512 INFO L85 PathProgramCache]: Analyzing trace with hash -116951725, now seen corresponding path program 1 times [2024-11-16 03:56:54,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:56:54,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839496211] [2024-11-16 03:56:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:56:54,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:56:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:56:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-16 03:56:55,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:56:55,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839496211] [2024-11-16 03:56:55,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839496211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:56:55,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:56:55,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 03:56:55,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862032727] [2024-11-16 03:56:55,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:56:55,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 03:56:55,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:56:55,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 03:56:55,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:56:55,338 INFO L87 Difference]: Start difference. First operand 18053 states and 21306 transitions. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:56:59,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:56:59,940 INFO L93 Difference]: Finished difference Result 42875 states and 50038 transitions. [2024-11-16 03:56:59,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 03:56:59,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2024-11-16 03:56:59,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:56:59,989 INFO L225 Difference]: With dead ends: 42875 [2024-11-16 03:56:59,990 INFO L226 Difference]: Without dead ends: 24824 [2024-11-16 03:57:00,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:57:00,019 INFO L432 NwaCegarLoop]: 647 mSDtfsCounter, 2818 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5281 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2818 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 5442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 5281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:57:00,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2818 Valid, 681 Invalid, 5442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 5281 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-16 03:57:00,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24824 states. [2024-11-16 03:57:00,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24824 to 23317. [2024-11-16 03:57:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23317 states, 23316 states have (on average 1.1530708526333848) internal successors, (26885), 23316 states have internal predecessors, (26885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:00,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23317 states to 23317 states and 26885 transitions. [2024-11-16 03:57:00,521 INFO L78 Accepts]: Start accepts. Automaton has 23317 states and 26885 transitions. Word has length 227 [2024-11-16 03:57:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:57:00,521 INFO L471 AbstractCegarLoop]: Abstraction has 23317 states and 26885 transitions. [2024-11-16 03:57:00,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:00,522 INFO L276 IsEmpty]: Start isEmpty. Operand 23317 states and 26885 transitions. [2024-11-16 03:57:00,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-16 03:57:00,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:57:00,527 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:57:00,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 03:57:00,528 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:57:00,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:57:00,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1727413017, now seen corresponding path program 1 times [2024-11-16 03:57:00,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:57:00,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116403122] [2024-11-16 03:57:00,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:57:00,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:57:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:57:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-16 03:57:00,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:57:00,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116403122] [2024-11-16 03:57:00,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116403122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:57:00,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:57:00,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:57:00,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595915055] [2024-11-16 03:57:00,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:57:00,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:57:00,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:57:00,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:57:00,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:57:00,803 INFO L87 Difference]: Start difference. First operand 23317 states and 26885 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:04,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:57:04,111 INFO L93 Difference]: Finished difference Result 67688 states and 78237 transitions. [2024-11-16 03:57:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:57:04,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 [2024-11-16 03:57:04,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:57:04,186 INFO L225 Difference]: With dead ends: 67688 [2024-11-16 03:57:04,186 INFO L226 Difference]: Without dead ends: 44373 [2024-11-16 03:57:04,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:57:04,219 INFO L432 NwaCegarLoop]: 1316 mSDtfsCounter, 751 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 3150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:57:04,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 1326 Invalid, 3150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 2753 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-16 03:57:04,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44373 states. [2024-11-16 03:57:04,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44373 to 39109. [2024-11-16 03:57:04,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39109 states, 39108 states have (on average 1.1503272987624016) internal successors, (44987), 39108 states have internal predecessors, (44987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:04,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39109 states to 39109 states and 44987 transitions. [2024-11-16 03:57:04,725 INFO L78 Accepts]: Start accepts. Automaton has 39109 states and 44987 transitions. Word has length 254 [2024-11-16 03:57:04,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:57:04,726 INFO L471 AbstractCegarLoop]: Abstraction has 39109 states and 44987 transitions. [2024-11-16 03:57:04,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:04,726 INFO L276 IsEmpty]: Start isEmpty. Operand 39109 states and 44987 transitions. [2024-11-16 03:57:04,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-16 03:57:04,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:57:04,731 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:57:04,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 03:57:04,732 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:57:04,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:57:04,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1165709477, now seen corresponding path program 1 times [2024-11-16 03:57:04,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:57:04,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804393551] [2024-11-16 03:57:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:57:04,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:57:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:57:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 03:57:05,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:57:05,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804393551] [2024-11-16 03:57:05,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804393551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:57:05,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:57:05,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:57:05,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324798592] [2024-11-16 03:57:05,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:57:05,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:57:05,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:57:05,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:57:05,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:57:05,321 INFO L87 Difference]: Start difference. First operand 39109 states and 44987 transitions. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:08,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:57:08,123 INFO L93 Difference]: Finished difference Result 86529 states and 98808 transitions. [2024-11-16 03:57:08,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:57:08,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 299 [2024-11-16 03:57:08,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:57:08,187 INFO L225 Difference]: With dead ends: 86529 [2024-11-16 03:57:08,187 INFO L226 Difference]: Without dead ends: 47384 [2024-11-16 03:57:08,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:57:08,225 INFO L432 NwaCegarLoop]: 699 mSDtfsCounter, 705 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:57:08,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 718 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-16 03:57:08,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47384 states. [2024-11-16 03:57:08,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47384 to 47381. [2024-11-16 03:57:08,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47381 states, 47380 states have (on average 1.1257703672435626) internal successors, (53339), 47380 states have internal predecessors, (53339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47381 states to 47381 states and 53339 transitions. [2024-11-16 03:57:08,777 INFO L78 Accepts]: Start accepts. Automaton has 47381 states and 53339 transitions. Word has length 299 [2024-11-16 03:57:08,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:57:08,778 INFO L471 AbstractCegarLoop]: Abstraction has 47381 states and 53339 transitions. [2024-11-16 03:57:08,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:08,778 INFO L276 IsEmpty]: Start isEmpty. Operand 47381 states and 53339 transitions. [2024-11-16 03:57:08,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-16 03:57:08,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:57:08,783 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:57:08,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 03:57:08,783 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:57:08,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:57:08,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1017263973, now seen corresponding path program 1 times [2024-11-16 03:57:08,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:57:08,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263529677] [2024-11-16 03:57:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:57:08,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:57:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:57:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-16 03:57:09,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:57:09,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263529677] [2024-11-16 03:57:09,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263529677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:57:09,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:57:09,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:57:09,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24746234] [2024-11-16 03:57:09,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:57:09,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:57:09,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:57:09,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:57:09,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:57:09,177 INFO L87 Difference]: Start difference. First operand 47381 states and 53339 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:12,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:57:12,156 INFO L93 Difference]: Finished difference Result 111304 states and 127006 transitions. [2024-11-16 03:57:12,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:57:12,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 314 [2024-11-16 03:57:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:57:12,235 INFO L225 Difference]: With dead ends: 111304 [2024-11-16 03:57:12,235 INFO L226 Difference]: Without dead ends: 63925 [2024-11-16 03:57:12,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:57:12,278 INFO L432 NwaCegarLoop]: 461 mSDtfsCounter, 719 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:57:12,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 468 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-16 03:57:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63925 states. [2024-11-16 03:57:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63925 to 63173. [2024-11-16 03:57:12,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63173 states, 63172 states have (on average 1.1315297916798581) internal successors, (71481), 63172 states have internal predecessors, (71481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63173 states to 63173 states and 71481 transitions. [2024-11-16 03:57:12,933 INFO L78 Accepts]: Start accepts. Automaton has 63173 states and 71481 transitions. Word has length 314 [2024-11-16 03:57:12,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:57:12,934 INFO L471 AbstractCegarLoop]: Abstraction has 63173 states and 71481 transitions. [2024-11-16 03:57:12,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:12,934 INFO L276 IsEmpty]: Start isEmpty. Operand 63173 states and 71481 transitions. [2024-11-16 03:57:12,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-11-16 03:57:12,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:57:12,945 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 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] [2024-11-16 03:57:12,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 03:57:12,946 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:57:12,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:57:12,950 INFO L85 PathProgramCache]: Analyzing trace with hash 480402197, now seen corresponding path program 1 times [2024-11-16 03:57:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:57:12,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348862379] [2024-11-16 03:57:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:57:12,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:57:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:57:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-16 03:57:13,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:57:13,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348862379] [2024-11-16 03:57:13,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348862379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:57:13,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:57:13,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:57:13,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105028054] [2024-11-16 03:57:13,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:57:13,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:57:13,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:57:13,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:57:13,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:57:13,558 INFO L87 Difference]: Start difference. First operand 63173 states and 71481 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:16,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:57:16,311 INFO L93 Difference]: Finished difference Result 145144 states and 163255 transitions. [2024-11-16 03:57:16,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:57:16,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 346 [2024-11-16 03:57:16,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:57:16,400 INFO L225 Difference]: With dead ends: 145144 [2024-11-16 03:57:16,400 INFO L226 Difference]: Without dead ends: 74453 [2024-11-16 03:57:16,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:57:16,438 INFO L432 NwaCegarLoop]: 1319 mSDtfsCounter, 788 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:57:16,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1329 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-16 03:57:16,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74453 states. [2024-11-16 03:57:17,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74453 to 66933. [2024-11-16 03:57:17,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66933 states, 66932 states have (on average 1.1073925775413853) internal successors, (74120), 66932 states have internal predecessors, (74120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66933 states to 66933 states and 74120 transitions. [2024-11-16 03:57:17,429 INFO L78 Accepts]: Start accepts. Automaton has 66933 states and 74120 transitions. Word has length 346 [2024-11-16 03:57:17,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:57:17,430 INFO L471 AbstractCegarLoop]: Abstraction has 66933 states and 74120 transitions. [2024-11-16 03:57:17,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:17,430 INFO L276 IsEmpty]: Start isEmpty. Operand 66933 states and 74120 transitions. [2024-11-16 03:57:17,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-11-16 03:57:17,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:57:17,437 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 03:57:17,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 03:57:17,439 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:57:17,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:57:17,439 INFO L85 PathProgramCache]: Analyzing trace with hash -559880779, now seen corresponding path program 1 times [2024-11-16 03:57:17,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:57:17,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395050113] [2024-11-16 03:57:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:57:17,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:57:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:57:18,105 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 42 proven. 205 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-16 03:57:18,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:57:18,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395050113] [2024-11-16 03:57:18,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395050113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:57:18,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667596685] [2024-11-16 03:57:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:57:18,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:57:18,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:57:18,109 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:57:18,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 03:57:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:57:18,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:57:18,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:57:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-16 03:57:18,453 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:57:18,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667596685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:57:18,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:57:18,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 03:57:18,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258647694] [2024-11-16 03:57:18,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:57:18,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:57:18,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:57:18,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:57:18,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:57:18,455 INFO L87 Difference]: Start difference. First operand 66933 states and 74120 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:20,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:57:20,958 INFO L93 Difference]: Finished difference Result 133112 states and 147481 transitions. [2024-11-16 03:57:20,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:57:20,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 347 [2024-11-16 03:57:20,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:57:21,037 INFO L225 Difference]: With dead ends: 133112 [2024-11-16 03:57:21,037 INFO L226 Difference]: Without dead ends: 66933 [2024-11-16 03:57:21,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:57:21,074 INFO L432 NwaCegarLoop]: 959 mSDtfsCounter, 750 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2248 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:57:21,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 969 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-16 03:57:21,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66933 states. [2024-11-16 03:57:21,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66933 to 66933. [2024-11-16 03:57:21,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66933 states, 66932 states have (on average 1.0879698798780852) internal successors, (72820), 66932 states have internal predecessors, (72820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66933 states to 66933 states and 72820 transitions. [2024-11-16 03:57:21,842 INFO L78 Accepts]: Start accepts. Automaton has 66933 states and 72820 transitions. Word has length 347 [2024-11-16 03:57:21,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:57:21,842 INFO L471 AbstractCegarLoop]: Abstraction has 66933 states and 72820 transitions. [2024-11-16 03:57:21,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:21,843 INFO L276 IsEmpty]: Start isEmpty. Operand 66933 states and 72820 transitions. [2024-11-16 03:57:21,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2024-11-16 03:57:21,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:57:21,849 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:57:21,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 03:57:22,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 03:57:22,050 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:57:22,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:57:22,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1220558683, now seen corresponding path program 1 times [2024-11-16 03:57:22,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:57:22,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329854448] [2024-11-16 03:57:22,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:57:22,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:57:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:57:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-16 03:57:23,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:57:23,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329854448] [2024-11-16 03:57:23,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329854448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:57:23,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:57:23,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 03:57:23,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746390820] [2024-11-16 03:57:23,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:57:23,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:57:23,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:57:23,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:57:23,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:57:23,493 INFO L87 Difference]: Start difference. First operand 66933 states and 72820 transitions. Second operand has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:28,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:57:28,129 INFO L93 Difference]: Finished difference Result 175976 states and 193704 transitions. [2024-11-16 03:57:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:57:28,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 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 415 [2024-11-16 03:57:28,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:57:28,261 INFO L225 Difference]: With dead ends: 175976 [2024-11-16 03:57:28,261 INFO L226 Difference]: Without dead ends: 109797 [2024-11-16 03:57:28,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:57:28,289 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 2066 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3642 mSolverCounterSat, 1558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 5200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1558 IncrementalHoareTripleChecker+Valid, 3642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-16 03:57:28,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2066 Valid, 130 Invalid, 5200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1558 Valid, 3642 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-16 03:57:28,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109797 states. [2024-11-16 03:57:29,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109797 to 81973. [2024-11-16 03:57:29,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81973 states, 81972 states have (on average 1.1040965207631874) internal successors, (90505), 81972 states have internal predecessors, (90505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:29,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81973 states to 81973 states and 90505 transitions. [2024-11-16 03:57:29,412 INFO L78 Accepts]: Start accepts. Automaton has 81973 states and 90505 transitions. Word has length 415 [2024-11-16 03:57:29,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:57:29,413 INFO L471 AbstractCegarLoop]: Abstraction has 81973 states and 90505 transitions. [2024-11-16 03:57:29,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:29,413 INFO L276 IsEmpty]: Start isEmpty. Operand 81973 states and 90505 transitions. [2024-11-16 03:57:29,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2024-11-16 03:57:29,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:57:29,421 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:57:29,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 03:57:29,422 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:57:29,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:57:29,422 INFO L85 PathProgramCache]: Analyzing trace with hash 924053448, now seen corresponding path program 1 times [2024-11-16 03:57:29,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:57:29,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516814276] [2024-11-16 03:57:29,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:57:29,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:57:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:57:30,363 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-16 03:57:30,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:57:30,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516814276] [2024-11-16 03:57:30,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516814276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:57:30,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:57:30,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:57:30,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099684151] [2024-11-16 03:57:30,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:57:30,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:57:30,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:57:30,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:57:30,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:57:30,366 INFO L87 Difference]: Start difference. First operand 81973 states and 90505 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:33,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:57:33,267 INFO L93 Difference]: Finished difference Result 191768 states and 213610 transitions. [2024-11-16 03:57:33,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:57:33,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 430 [2024-11-16 03:57:33,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:57:33,597 INFO L225 Difference]: With dead ends: 191768 [2024-11-16 03:57:33,598 INFO L226 Difference]: Without dead ends: 110549 [2024-11-16 03:57:33,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:57:33,630 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 814 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 833 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 833 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:57:33,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 141 Invalid, 2835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [833 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 03:57:33,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110549 states. [2024-11-16 03:57:34,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110549 to 109045. [2024-11-16 03:57:34,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109045 states, 109044 states have (on average 1.1054161622831151) internal successors, (120539), 109044 states have internal predecessors, (120539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109045 states to 109045 states and 120539 transitions. [2024-11-16 03:57:35,086 INFO L78 Accepts]: Start accepts. Automaton has 109045 states and 120539 transitions. Word has length 430 [2024-11-16 03:57:35,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:57:35,086 INFO L471 AbstractCegarLoop]: Abstraction has 109045 states and 120539 transitions. [2024-11-16 03:57:35,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:57:35,087 INFO L276 IsEmpty]: Start isEmpty. Operand 109045 states and 120539 transitions. [2024-11-16 03:57:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-16 03:57:35,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:57:35,110 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:57:35,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 03:57:35,110 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:57:35,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:57:35,111 INFO L85 PathProgramCache]: Analyzing trace with hash -334099236, now seen corresponding path program 1 times [2024-11-16 03:57:35,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:57:35,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188333748] [2024-11-16 03:57:35,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:57:35,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:57:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:57:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 379 proven. 55 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-16 03:57:36,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:57:36,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188333748] [2024-11-16 03:57:36,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188333748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:57:36,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235840048] [2024-11-16 03:57:36,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:57:36,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:57:36,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:57:36,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:57:36,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 03:57:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:57:36,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 03:57:36,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:57:37,108 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 380 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-16 03:57:37,110 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:57:37,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235840048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:57:37,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:57:37,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-16 03:57:37,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714867971] [2024-11-16 03:57:37,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:57:37,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:57:37,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:57:37,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:57:37,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:57:37,114 INFO L87 Difference]: Start difference. First operand 109045 states and 120539 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)