./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem16_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem16_label01.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 67c147095efb46de95e554e09305e6c24ee3dfebae2911ec90ba2508ef10e1b1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:44:57,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:44:58,000 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:44:58,008 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:44:58,008 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:44:58,036 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:44:58,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:44:58,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:44:58,039 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:44:58,041 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:44:58,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:44:58,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:44:58,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:44:58,045 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:44:58,045 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:44:58,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:44:58,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:44:58,046 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:44:58,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:44:58,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:44:58,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:44:58,051 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:44:58,051 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:44:58,052 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:44:58,052 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:44:58,052 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:44:58,052 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:44:58,053 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:44:58,053 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:44:58,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:44:58,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:44:58,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:44:58,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:44:58,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:44:58,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:44:58,062 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:44:58,063 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:44:58,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:44:58,063 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:44:58,063 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:44:58,063 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:44:58,066 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:44:58,066 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67c147095efb46de95e554e09305e6c24ee3dfebae2911ec90ba2508ef10e1b1 [2024-11-09 19:44:58,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:44:58,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:44:58,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:44:58,368 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:44:58,369 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:44:58,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label01.c [2024-11-09 19:44:59,799 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:45:00,152 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:45:00,154 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label01.c [2024-11-09 19:45:00,178 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/256c6d03e/62c53a1bf91f438c8f313474301d8dc6/FLAG57d31c844 [2024-11-09 19:45:00,194 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/256c6d03e/62c53a1bf91f438c8f313474301d8dc6 [2024-11-09 19:45:00,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:45:00,198 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:45:00,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:45:00,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:45:00,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:45:00,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:45:00" (1/1) ... [2024-11-09 19:45:00,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d87f35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:00, skipping insertion in model container [2024-11-09 19:45:00,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:45:00" (1/1) ... [2024-11-09 19:45:00,274 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:45:00,495 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label01.c[2910,2923] [2024-11-09 19:45:00,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:45:00,872 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:45:00,894 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label01.c[2910,2923] [2024-11-09 19:45:01,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:45:01,138 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:45:01,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:01 WrapperNode [2024-11-09 19:45:01,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:45:01,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:45:01,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:45:01,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:45:01,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:01" (1/1) ... [2024-11-09 19:45:01,188 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:01" (1/1) ... [2024-11-09 19:45:01,398 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1769 [2024-11-09 19:45:01,399 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:45:01,400 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:45:01,400 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:45:01,400 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:45:01,411 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:01" (1/1) ... [2024-11-09 19:45:01,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:01" (1/1) ... [2024-11-09 19:45:01,425 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:01" (1/1) ... [2024-11-09 19:45:01,486 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 19:45:01,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:01" (1/1) ... [2024-11-09 19:45:01,486 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:01" (1/1) ... [2024-11-09 19:45:01,555 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:01" (1/1) ... [2024-11-09 19:45:01,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:01" (1/1) ... [2024-11-09 19:45:01,575 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:01" (1/1) ... [2024-11-09 19:45:01,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:01" (1/1) ... [2024-11-09 19:45:01,601 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:45:01,603 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:45:01,603 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:45:01,603 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:45:01,605 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:01" (1/1) ... [2024-11-09 19:45:01,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:45:01,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:45:01,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 19:45:01,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 19:45:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:45:01,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:45:01,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:45:01,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:45:01,754 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:45:01,756 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:45:04,196 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1501: havoc calculate_output_#t~ret7#1; [2024-11-09 19:45:04,326 INFO L? ?]: Removed 757 outVars from TransFormulas that were not future-live. [2024-11-09 19:45:04,327 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:45:04,354 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:45:04,354 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:45:04,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:45:04 BoogieIcfgContainer [2024-11-09 19:45:04,355 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:45:04,357 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:45:04,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:45:04,362 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:45:04,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:45:00" (1/3) ... [2024-11-09 19:45:04,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2beebd77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:45:04, skipping insertion in model container [2024-11-09 19:45:04,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:01" (2/3) ... [2024-11-09 19:45:04,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2beebd77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:45:04, skipping insertion in model container [2024-11-09 19:45:04,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:45:04" (3/3) ... [2024-11-09 19:45:04,365 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label01.c [2024-11-09 19:45:04,382 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:45:04,382 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:45:04,467 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:45:04,474 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;@2e44991, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:45:04,475 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:45:04,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 399 states, 397 states have (on average 2.4886649874055418) internal successors, (988), 398 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:04,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 19:45:04,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:04,489 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:45:04,489 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:04,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:04,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1820395994, now seen corresponding path program 1 times [2024-11-09 19:45:04,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:04,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184236056] [2024-11-09 19:45:04,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:04,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:45:04,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:45:04,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184236056] [2024-11-09 19:45:04,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184236056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:45:04,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:45:04,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:45:04,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505440508] [2024-11-09 19:45:04,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:45:04,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:45:04,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:45:04,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:45:04,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:45:04,955 INFO L87 Difference]: Start difference. First operand has 399 states, 397 states have (on average 2.4886649874055418) internal successors, (988), 398 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:08,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:45:08,700 INFO L93 Difference]: Finished difference Result 1463 states and 3819 transitions. [2024-11-09 19:45:08,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:45:08,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-09 19:45:08,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:45:08,735 INFO L225 Difference]: With dead ends: 1463 [2024-11-09 19:45:08,735 INFO L226 Difference]: Without dead ends: 995 [2024-11-09 19:45:08,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:45:08,746 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 1768 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 3485 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1768 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 3994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 3485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:45:08,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1768 Valid, 354 Invalid, 3994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 3485 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 19:45:08,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2024-11-09 19:45:08,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 995. [2024-11-09 19:45:08,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 994 states have (on average 2.2746478873239435) internal successors, (2261), 994 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:08,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 2261 transitions. [2024-11-09 19:45:08,857 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 2261 transitions. Word has length 28 [2024-11-09 19:45:08,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:45:08,858 INFO L471 AbstractCegarLoop]: Abstraction has 995 states and 2261 transitions. [2024-11-09 19:45:08,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:08,858 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 2261 transitions. [2024-11-09 19:45:08,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-09 19:45:08,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:08,862 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:45:08,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:45:08,863 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:08,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:08,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1660353472, now seen corresponding path program 1 times [2024-11-09 19:45:08,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:08,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544449204] [2024-11-09 19:45:08,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:08,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:45:09,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:45:09,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544449204] [2024-11-09 19:45:09,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544449204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:45:09,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894593020] [2024-11-09 19:45:09,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:09,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:45:09,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:45:09,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:45:09,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:45:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:09,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:45:09,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:45:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:45:09,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:45:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:45:10,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894593020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:45:10,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:45:10,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-09 19:45:10,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094570355] [2024-11-09 19:45:10,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:45:10,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 19:45:10,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:45:10,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 19:45:10,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:45:10,474 INFO L87 Difference]: Start difference. First operand 995 states and 2261 transitions. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 5 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) [2024-11-09 19:45:17,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:45:17,284 INFO L93 Difference]: Finished difference Result 6278 states and 15487 transitions. [2024-11-09 19:45:17,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 19:45:17,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 5 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 116 [2024-11-09 19:45:17,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:45:17,308 INFO L225 Difference]: With dead ends: 6278 [2024-11-09 19:45:17,308 INFO L226 Difference]: Without dead ends: 5615 [2024-11-09 19:45:17,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-09 19:45:17,312 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 6651 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 4885 mSolverCounterSat, 2853 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6651 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 7738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2853 IncrementalHoareTripleChecker+Valid, 4885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:45:17,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6651 Valid, 39 Invalid, 7738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2853 Valid, 4885 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-09 19:45:17,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5615 states. [2024-11-09 19:45:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5615 to 5615. [2024-11-09 19:45:17,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5614 states have (on average 2.286604916280727) internal successors, (12837), 5614 states have internal predecessors, (12837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:17,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 12837 transitions. [2024-11-09 19:45:17,450 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 12837 transitions. Word has length 116 [2024-11-09 19:45:17,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:45:17,451 INFO L471 AbstractCegarLoop]: Abstraction has 5615 states and 12837 transitions. [2024-11-09 19:45:17,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 5 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) [2024-11-09 19:45:17,452 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 12837 transitions. [2024-11-09 19:45:17,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-09 19:45:17,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:17,461 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:45:17,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:45:17,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:45:17,666 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:17,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:17,666 INFO L85 PathProgramCache]: Analyzing trace with hash -815185738, now seen corresponding path program 1 times [2024-11-09 19:45:17,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:17,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473674931] [2024-11-09 19:45:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:17,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:18,308 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:45:18,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:45:18,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473674931] [2024-11-09 19:45:18,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473674931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:45:18,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:45:18,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 19:45:18,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240283562] [2024-11-09 19:45:18,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:45:18,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 19:45:18,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:45:18,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 19:45:18,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:45:18,312 INFO L87 Difference]: Start difference. First operand 5615 states and 12837 transitions. Second operand has 7 states, 7 states have (on average 40.57142857142857) internal successors, (284), 6 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:20,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:45:20,475 INFO L93 Difference]: Finished difference Result 11158 states and 24901 transitions. [2024-11-09 19:45:20,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 19:45:20,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 40.57142857142857) internal successors, (284), 6 states have internal predecessors, (284), 0 states have call successors, (0), 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 284 [2024-11-09 19:45:20,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:45:20,493 INFO L225 Difference]: With dead ends: 11158 [2024-11-09 19:45:20,493 INFO L226 Difference]: Without dead ends: 5362 [2024-11-09 19:45:20,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:45:20,545 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 561 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 3015 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 3015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:45:20,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 284 Invalid, 3388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 3015 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:45:20,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2024-11-09 19:45:20,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 5311. [2024-11-09 19:45:20,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5311 states, 5310 states have (on average 1.9674199623352167) internal successors, (10447), 5310 states have internal predecessors, (10447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5311 states to 5311 states and 10447 transitions. [2024-11-09 19:45:20,650 INFO L78 Accepts]: Start accepts. Automaton has 5311 states and 10447 transitions. Word has length 284 [2024-11-09 19:45:20,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:45:20,651 INFO L471 AbstractCegarLoop]: Abstraction has 5311 states and 10447 transitions. [2024-11-09 19:45:20,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.57142857142857) internal successors, (284), 6 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:20,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5311 states and 10447 transitions. [2024-11-09 19:45:20,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-09 19:45:20,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:20,658 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:45:20,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:45:20,658 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:20,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1576163370, now seen corresponding path program 1 times [2024-11-09 19:45:20,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:20,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384359269] [2024-11-09 19:45:20,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:20,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 19:45:20,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:45:20,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384359269] [2024-11-09 19:45:20,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384359269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:45:20,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:45:20,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:45:20,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998774336] [2024-11-09 19:45:20,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:45:20,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:45:20,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:45:20,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:45:20,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:45:20,904 INFO L87 Difference]: Start difference. First operand 5311 states and 10447 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 2 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:22,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:45:22,226 INFO L93 Difference]: Finished difference Result 12270 states and 24102 transitions. [2024-11-09 19:45:22,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:45:22,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 2 states have internal predecessors, (264), 0 states have call successors, (0), 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 288 [2024-11-09 19:45:22,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:45:22,246 INFO L225 Difference]: With dead ends: 12270 [2024-11-09 19:45:22,246 INFO L226 Difference]: Without dead ends: 7291 [2024-11-09 19:45:22,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:45:22,252 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 482 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:45:22,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 37 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 19:45:22,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7291 states. [2024-11-09 19:45:22,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7291 to 7291. [2024-11-09 19:45:22,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7291 states, 7290 states have (on average 1.9281207133058984) internal successors, (14056), 7290 states have internal predecessors, (14056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7291 states to 7291 states and 14056 transitions. [2024-11-09 19:45:22,421 INFO L78 Accepts]: Start accepts. Automaton has 7291 states and 14056 transitions. Word has length 288 [2024-11-09 19:45:22,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:45:22,423 INFO L471 AbstractCegarLoop]: Abstraction has 7291 states and 14056 transitions. [2024-11-09 19:45:22,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 2 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:22,423 INFO L276 IsEmpty]: Start isEmpty. Operand 7291 states and 14056 transitions. [2024-11-09 19:45:22,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-11-09 19:45:22,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:22,430 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:45:22,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:45:22,432 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:22,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:22,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1732279866, now seen corresponding path program 1 times [2024-11-09 19:45:22,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:22,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976650369] [2024-11-09 19:45:22,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:22,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:23,032 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 206 proven. 61 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-09 19:45:23,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:45:23,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976650369] [2024-11-09 19:45:23,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976650369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:45:23,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594582793] [2024-11-09 19:45:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:23,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:45:23,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:45:23,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:45:23,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:45:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:23,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:45:23,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:45:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-09 19:45:23,571 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:45:23,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594582793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:45:23,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:45:23,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 19:45:23,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104435646] [2024-11-09 19:45:23,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:45:23,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:45:23,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:45:23,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:45:23,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:45:23,573 INFO L87 Difference]: Start difference. First operand 7291 states and 14056 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:24,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:45:24,902 INFO L93 Difference]: Finished difference Result 17220 states and 33355 transitions. [2024-11-09 19:45:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:45:24,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 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 422 [2024-11-09 19:45:24,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:45:24,932 INFO L225 Difference]: With dead ends: 17220 [2024-11-09 19:45:24,933 INFO L226 Difference]: Without dead ends: 10261 [2024-11-09 19:45:24,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:45:24,941 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 394 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:45:24,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 94 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 19:45:24,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10261 states. [2024-11-09 19:45:25,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10261 to 9601. [2024-11-09 19:45:25,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9601 states, 9600 states have (on average 1.88125) internal successors, (18060), 9600 states have internal predecessors, (18060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:25,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9601 states to 9601 states and 18060 transitions. [2024-11-09 19:45:25,145 INFO L78 Accepts]: Start accepts. Automaton has 9601 states and 18060 transitions. Word has length 422 [2024-11-09 19:45:25,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:45:25,145 INFO L471 AbstractCegarLoop]: Abstraction has 9601 states and 18060 transitions. [2024-11-09 19:45:25,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:25,146 INFO L276 IsEmpty]: Start isEmpty. Operand 9601 states and 18060 transitions. [2024-11-09 19:45:25,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2024-11-09 19:45:25,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:25,157 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:45:25,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 19:45:25,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:45:25,359 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:25,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:25,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2063681860, now seen corresponding path program 1 times [2024-11-09 19:45:25,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:25,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184056542] [2024-11-09 19:45:25,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:25,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 19:45:25,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:45:25,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184056542] [2024-11-09 19:45:25,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184056542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:45:25,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:45:25,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:45:25,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535858536] [2024-11-09 19:45:25,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:45:25,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:45:25,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:45:25,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:45:25,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:45:25,801 INFO L87 Difference]: Start difference. First operand 9601 states and 18060 transitions. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:45:27,285 INFO L93 Difference]: Finished difference Result 23160 states and 43754 transitions. [2024-11-09 19:45:27,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:45:27,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 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 532 [2024-11-09 19:45:27,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:45:27,316 INFO L225 Difference]: With dead ends: 23160 [2024-11-09 19:45:27,316 INFO L226 Difference]: Without dead ends: 13891 [2024-11-09 19:45:27,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:45:27,330 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 441 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:45:27,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 116 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 19:45:27,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13891 states. [2024-11-09 19:45:27,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13891 to 13891. [2024-11-09 19:45:27,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13891 states, 13890 states have (on average 1.876601871850252) internal successors, (26066), 13890 states have internal predecessors, (26066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13891 states to 13891 states and 26066 transitions. [2024-11-09 19:45:27,549 INFO L78 Accepts]: Start accepts. Automaton has 13891 states and 26066 transitions. Word has length 532 [2024-11-09 19:45:27,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:45:27,550 INFO L471 AbstractCegarLoop]: Abstraction has 13891 states and 26066 transitions. [2024-11-09 19:45:27,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 13891 states and 26066 transitions. [2024-11-09 19:45:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2024-11-09 19:45:27,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:27,563 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:45:27,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:45:27,565 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:27,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:27,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1012666358, now seen corresponding path program 1 times [2024-11-09 19:45:27,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:27,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299176993] [2024-11-09 19:45:27,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:27,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 49 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:45:28,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:45:28,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299176993] [2024-11-09 19:45:28,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299176993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:45:28,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819530116] [2024-11-09 19:45:28,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:28,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:45:28,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:45:28,400 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:45:28,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:45:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:28,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 19:45:28,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:45:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:45:29,280 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:45:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 49 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:45:30,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819530116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:45:30,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:45:30,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 19:45:30,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652285379] [2024-11-09 19:45:30,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:45:30,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 19:45:30,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:45:30,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 19:45:30,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-11-09 19:45:30,089 INFO L87 Difference]: Start difference. First operand 13891 states and 26066 transitions. Second operand has 11 states, 11 states have (on average 147.1818181818182) internal successors, (1619), 10 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:34,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:45:34,666 INFO L93 Difference]: Finished difference Result 33798 states and 63402 transitions. [2024-11-09 19:45:34,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 19:45:34,667 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 147.1818181818182) internal successors, (1619), 10 states have internal predecessors, (1619), 0 states have call successors, (0), 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 541 [2024-11-09 19:45:34,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:45:34,703 INFO L225 Difference]: With dead ends: 33798 [2024-11-09 19:45:34,703 INFO L226 Difference]: Without dead ends: 20188 [2024-11-09 19:45:34,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1084 GetRequests, 1075 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-11-09 19:45:34,718 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2936 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 8667 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2936 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 9138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 8667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:45:34,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2936 Valid, 122 Invalid, 9138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 8667 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-09 19:45:34,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20188 states. [2024-11-09 19:45:34,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20188 to 16860. [2024-11-09 19:45:34,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16860 states, 16859 states have (on average 1.8734800403345395) internal successors, (31585), 16859 states have internal predecessors, (31585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16860 states to 16860 states and 31585 transitions. [2024-11-09 19:45:34,961 INFO L78 Accepts]: Start accepts. Automaton has 16860 states and 31585 transitions. Word has length 541 [2024-11-09 19:45:34,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:45:34,962 INFO L471 AbstractCegarLoop]: Abstraction has 16860 states and 31585 transitions. [2024-11-09 19:45:34,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 147.1818181818182) internal successors, (1619), 10 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:34,962 INFO L276 IsEmpty]: Start isEmpty. Operand 16860 states and 31585 transitions. [2024-11-09 19:45:35,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2024-11-09 19:45:35,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:35,043 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:45:35,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 19:45:35,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:45:35,245 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:35,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:35,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1617910972, now seen corresponding path program 1 times [2024-11-09 19:45:35,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:35,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154841931] [2024-11-09 19:45:35,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:35,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:35,650 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 534 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2024-11-09 19:45:35,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:45:35,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154841931] [2024-11-09 19:45:35,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154841931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:45:35,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:45:35,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:45:35,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428034366] [2024-11-09 19:45:35,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:45:35,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:45:35,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:45:35,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:45:35,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:45:35,654 INFO L87 Difference]: Start difference. First operand 16860 states and 31585 transitions. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:36,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:45:36,887 INFO L93 Difference]: Finished difference Result 37348 states and 70103 transitions. [2024-11-09 19:45:36,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:45:36,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 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 708 [2024-11-09 19:45:36,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:45:36,918 INFO L225 Difference]: With dead ends: 37348 [2024-11-09 19:45:36,918 INFO L226 Difference]: Without dead ends: 21480 [2024-11-09 19:45:36,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:45:36,935 INFO L432 NwaCegarLoop]: 709 mSDtfsCounter, 413 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:45:36,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 717 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:45:36,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21480 states. [2024-11-09 19:45:37,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21480 to 18840. [2024-11-09 19:45:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18840 states, 18839 states have (on average 1.8668719146451511) internal successors, (35170), 18839 states have internal predecessors, (35170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:37,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18840 states to 18840 states and 35170 transitions. [2024-11-09 19:45:37,219 INFO L78 Accepts]: Start accepts. Automaton has 18840 states and 35170 transitions. Word has length 708 [2024-11-09 19:45:37,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:45:37,220 INFO L471 AbstractCegarLoop]: Abstraction has 18840 states and 35170 transitions. [2024-11-09 19:45:37,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:37,220 INFO L276 IsEmpty]: Start isEmpty. Operand 18840 states and 35170 transitions. [2024-11-09 19:45:37,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2024-11-09 19:45:37,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:37,231 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:45:37,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:45:37,232 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:37,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:37,233 INFO L85 PathProgramCache]: Analyzing trace with hash 282982120, now seen corresponding path program 1 times [2024-11-09 19:45:37,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:37,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589241725] [2024-11-09 19:45:37,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:37,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 895 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2024-11-09 19:45:38,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:45:38,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589241725] [2024-11-09 19:45:38,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589241725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:45:38,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:45:38,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:45:38,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365443021] [2024-11-09 19:45:38,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:45:38,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:45:38,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:45:38,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:45:38,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:45:38,092 INFO L87 Difference]: Start difference. First operand 18840 states and 35170 transitions. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:39,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:45:39,320 INFO L93 Difference]: Finished difference Result 38998 states and 73024 transitions. [2024-11-09 19:45:39,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:45:39,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 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 741 [2024-11-09 19:45:39,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:45:39,353 INFO L225 Difference]: With dead ends: 38998 [2024-11-09 19:45:39,354 INFO L226 Difference]: Without dead ends: 21150 [2024-11-09 19:45:39,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:45:39,369 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 488 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:45:39,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 43 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:45:39,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21150 states. [2024-11-09 19:45:39,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21150 to 20820. [2024-11-09 19:45:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20820 states, 20819 states have (on average 1.86810125366252) internal successors, (38892), 20819 states have internal predecessors, (38892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:39,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20820 states to 20820 states and 38892 transitions. [2024-11-09 19:45:39,713 INFO L78 Accepts]: Start accepts. Automaton has 20820 states and 38892 transitions. Word has length 741 [2024-11-09 19:45:39,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:45:39,713 INFO L471 AbstractCegarLoop]: Abstraction has 20820 states and 38892 transitions. [2024-11-09 19:45:39,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:39,714 INFO L276 IsEmpty]: Start isEmpty. Operand 20820 states and 38892 transitions. [2024-11-09 19:45:39,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2024-11-09 19:45:39,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:39,729 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:45:39,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:45:39,729 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:39,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:39,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1406155932, now seen corresponding path program 1 times [2024-11-09 19:45:39,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:39,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181310264] [2024-11-09 19:45:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:39,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:40,347 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2024-11-09 19:45:40,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:45:40,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181310264] [2024-11-09 19:45:40,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181310264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:45:40,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:45:40,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:45:40,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812355617] [2024-11-09 19:45:40,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:45:40,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:45:40,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:45:40,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:45:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:45:40,350 INFO L87 Difference]: Start difference. First operand 20820 states and 38892 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:41,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:45:41,577 INFO L93 Difference]: Finished difference Result 40978 states and 76594 transitions. [2024-11-09 19:45:41,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:45:41,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 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 790 [2024-11-09 19:45:41,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:45:41,610 INFO L225 Difference]: With dead ends: 40978 [2024-11-09 19:45:41,611 INFO L226 Difference]: Without dead ends: 21150 [2024-11-09 19:45:41,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:45:41,627 INFO L432 NwaCegarLoop]: 695 mSDtfsCounter, 568 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:45:41,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 703 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:45:41,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21150 states. [2024-11-09 19:45:41,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21150 to 19500. [2024-11-09 19:45:41,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19500 states, 19499 states have (on average 1.8528642494486898) internal successors, (36129), 19499 states have internal predecessors, (36129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:42,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19500 states to 19500 states and 36129 transitions. [2024-11-09 19:45:42,012 INFO L78 Accepts]: Start accepts. Automaton has 19500 states and 36129 transitions. Word has length 790 [2024-11-09 19:45:42,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:45:42,017 INFO L471 AbstractCegarLoop]: Abstraction has 19500 states and 36129 transitions. [2024-11-09 19:45:42,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:42,017 INFO L276 IsEmpty]: Start isEmpty. Operand 19500 states and 36129 transitions. [2024-11-09 19:45:42,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2024-11-09 19:45:42,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:42,030 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:45:42,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:45:42,031 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:42,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:42,032 INFO L85 PathProgramCache]: Analyzing trace with hash -749656034, now seen corresponding path program 1 times [2024-11-09 19:45:42,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:42,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461103793] [2024-11-09 19:45:42,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:42,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 732 trivial. 0 not checked. [2024-11-09 19:45:43,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:45:43,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461103793] [2024-11-09 19:45:43,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461103793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:45:43,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:45:43,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:45:43,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925436587] [2024-11-09 19:45:43,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:45:43,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:45:43,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:45:43,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:45:43,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:45:43,317 INFO L87 Difference]: Start difference. First operand 19500 states and 36129 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:44,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:45:44,537 INFO L93 Difference]: Finished difference Result 38008 states and 70468 transitions. [2024-11-09 19:45:44,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:45:44,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 791 [2024-11-09 19:45:44,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:45:44,557 INFO L225 Difference]: With dead ends: 38008 [2024-11-09 19:45:44,558 INFO L226 Difference]: Without dead ends: 19500 [2024-11-09 19:45:44,565 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 [2024-11-09 19:45:44,565 INFO L432 NwaCegarLoop]: 637 mSDtfsCounter, 603 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:45:44,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 645 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:45:44,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19500 states. [2024-11-09 19:45:44,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19500 to 19170. [2024-11-09 19:45:44,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19170 states, 19169 states have (on average 1.8450101726746309) internal successors, (35367), 19169 states have internal predecessors, (35367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:44,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19170 states to 19170 states and 35367 transitions. [2024-11-09 19:45:44,761 INFO L78 Accepts]: Start accepts. Automaton has 19170 states and 35367 transitions. Word has length 791 [2024-11-09 19:45:44,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:45:44,762 INFO L471 AbstractCegarLoop]: Abstraction has 19170 states and 35367 transitions. [2024-11-09 19:45:44,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:44,762 INFO L276 IsEmpty]: Start isEmpty. Operand 19170 states and 35367 transitions. [2024-11-09 19:45:44,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2024-11-09 19:45:44,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:44,777 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:45:44,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:45:44,778 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:44,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:44,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1470301930, now seen corresponding path program 1 times [2024-11-09 19:45:44,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:44,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599015456] [2024-11-09 19:45:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:44,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 927 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-09 19:45:45,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:45:45,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599015456] [2024-11-09 19:45:45,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599015456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:45:45,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:45:45,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:45:45,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159701848] [2024-11-09 19:45:45,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:45:45,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:45:45,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:45:45,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:45:45,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:45:45,649 INFO L87 Difference]: Start difference. First operand 19170 states and 35367 transitions. Second operand has 4 states, 4 states have (on average 145.25) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:47,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:45:47,086 INFO L93 Difference]: Finished difference Result 37348 states and 68944 transitions. [2024-11-09 19:45:47,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:45:47,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 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 795 [2024-11-09 19:45:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:45:47,112 INFO L225 Difference]: With dead ends: 37348 [2024-11-09 19:45:47,112 INFO L226 Difference]: Without dead ends: 19170 [2024-11-09 19:45:47,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:45:47,128 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 435 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:45:47,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 127 Invalid, 1984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 19:45:47,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19170 states. [2024-11-09 19:45:47,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19170 to 19170. [2024-11-09 19:45:47,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19170 states, 19169 states have (on average 1.8448536699880014) internal successors, (35364), 19169 states have internal predecessors, (35364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:47,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19170 states to 19170 states and 35364 transitions. [2024-11-09 19:45:47,322 INFO L78 Accepts]: Start accepts. Automaton has 19170 states and 35364 transitions. Word has length 795 [2024-11-09 19:45:47,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:45:47,323 INFO L471 AbstractCegarLoop]: Abstraction has 19170 states and 35364 transitions. [2024-11-09 19:45:47,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:47,323 INFO L276 IsEmpty]: Start isEmpty. Operand 19170 states and 35364 transitions. [2024-11-09 19:45:47,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2024-11-09 19:45:47,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:47,334 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:45:47,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:45:47,335 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:47,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:47,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1665295322, now seen corresponding path program 1 times [2024-11-09 19:45:47,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:47,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647225591] [2024-11-09 19:45:47,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:47,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 615 proven. 0 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2024-11-09 19:45:48,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:45:48,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647225591] [2024-11-09 19:45:48,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647225591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:45:48,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:45:48,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:45:48,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967371021] [2024-11-09 19:45:48,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:45:48,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:45:48,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:45:48,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:45:48,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:45:48,100 INFO L87 Difference]: Start difference. First operand 19170 states and 35364 transitions. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:49,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:45:49,260 INFO L93 Difference]: Finished difference Result 38338 states and 70799 transitions. [2024-11-09 19:45:49,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:45:49,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 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 830 [2024-11-09 19:45:49,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:45:49,290 INFO L225 Difference]: With dead ends: 38338 [2024-11-09 19:45:49,290 INFO L226 Difference]: Without dead ends: 20160 [2024-11-09 19:45:49,303 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 [2024-11-09 19:45:49,304 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 434 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:45:49,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 38 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:45:49,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20160 states. [2024-11-09 19:45:49,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20160 to 19830. [2024-11-09 19:45:49,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19830 states, 19829 states have (on average 1.838670633920016) internal successors, (36459), 19829 states have internal predecessors, (36459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:49,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19830 states to 19830 states and 36459 transitions. [2024-11-09 19:45:49,475 INFO L78 Accepts]: Start accepts. Automaton has 19830 states and 36459 transitions. Word has length 830 [2024-11-09 19:45:49,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:45:49,476 INFO L471 AbstractCegarLoop]: Abstraction has 19830 states and 36459 transitions. [2024-11-09 19:45:49,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:49,476 INFO L276 IsEmpty]: Start isEmpty. Operand 19830 states and 36459 transitions. [2024-11-09 19:45:49,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2024-11-09 19:45:49,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:49,488 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:45:49,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:45:49,488 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:49,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:49,488 INFO L85 PathProgramCache]: Analyzing trace with hash 189024154, now seen corresponding path program 1 times [2024-11-09 19:45:49,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:49,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780679837] [2024-11-09 19:45:49,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:49,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 680 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2024-11-09 19:45:50,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:45:50,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780679837] [2024-11-09 19:45:50,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780679837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:45:50,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:45:50,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:45:50,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962662942] [2024-11-09 19:45:50,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:45:50,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:45:50,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:45:50,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:45:50,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:45:50,166 INFO L87 Difference]: Start difference. First operand 19830 states and 36459 transitions. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:51,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:45:51,417 INFO L93 Difference]: Finished difference Result 39988 states and 73514 transitions. [2024-11-09 19:45:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:45:51,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 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 905 [2024-11-09 19:45:51,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:45:51,443 INFO L225 Difference]: With dead ends: 39988 [2024-11-09 19:45:51,443 INFO L226 Difference]: Without dead ends: 19830 [2024-11-09 19:45:51,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:45:51,457 INFO L432 NwaCegarLoop]: 689 mSDtfsCounter, 409 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:45:51,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 695 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:45:51,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19830 states. [2024-11-09 19:45:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19830 to 19500. [2024-11-09 19:45:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19500 states, 19499 states have (on average 1.8260936458279913) internal successors, (35607), 19499 states have internal predecessors, (35607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:51,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19500 states to 19500 states and 35607 transitions. [2024-11-09 19:45:51,658 INFO L78 Accepts]: Start accepts. Automaton has 19500 states and 35607 transitions. Word has length 905 [2024-11-09 19:45:51,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:45:51,659 INFO L471 AbstractCegarLoop]: Abstraction has 19500 states and 35607 transitions. [2024-11-09 19:45:51,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:51,659 INFO L276 IsEmpty]: Start isEmpty. Operand 19500 states and 35607 transitions. [2024-11-09 19:45:51,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2024-11-09 19:45:51,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:51,671 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:45:51,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:45:51,671 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:51,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:51,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1870267416, now seen corresponding path program 1 times [2024-11-09 19:45:51,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:51,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926818845] [2024-11-09 19:45:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:51,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 867 proven. 140 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-11-09 19:45:52,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:45:52,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926818845] [2024-11-09 19:45:52,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926818845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:45:52,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948835745] [2024-11-09 19:45:52,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:52,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:45:52,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:45:52,868 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:45:52,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 19:45:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:53,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 19:45:53,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:45:55,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 817 proven. 201 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-09 19:45:55,177 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:45:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 817 proven. 201 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-09 19:45:58,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948835745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:45:58,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:45:58,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-09 19:45:58,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713247209] [2024-11-09 19:45:58,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:45:58,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 19:45:58,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:45:58,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 19:45:58,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-09 19:45:58,896 INFO L87 Difference]: Start difference. First operand 19500 states and 35607 transitions. Second operand has 9 states, 9 states have (on average 207.11111111111111) internal successors, (1864), 9 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:04,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:04,589 INFO L93 Difference]: Finished difference Result 47631 states and 86898 transitions. [2024-11-09 19:46:04,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 19:46:04,590 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 207.11111111111111) internal successors, (1864), 9 states have internal predecessors, (1864), 0 states have call successors, (0), 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 931 [2024-11-09 19:46:04,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:04,618 INFO L225 Difference]: With dead ends: 47631 [2024-11-09 19:46:04,618 INFO L226 Difference]: Without dead ends: 28768 [2024-11-09 19:46:04,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1877 GetRequests, 1864 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-11-09 19:46:04,634 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 6986 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 7622 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6986 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 8062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 7622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:04,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6986 Valid, 84 Invalid, 8062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 7622 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-09 19:46:04,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28768 states. [2024-11-09 19:46:04,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28768 to 20160. [2024-11-09 19:46:04,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20160 states, 20159 states have (on average 1.8260826429882435) internal successors, (36812), 20159 states have internal predecessors, (36812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20160 states to 20160 states and 36812 transitions. [2024-11-09 19:46:04,996 INFO L78 Accepts]: Start accepts. Automaton has 20160 states and 36812 transitions. Word has length 931 [2024-11-09 19:46:04,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:04,997 INFO L471 AbstractCegarLoop]: Abstraction has 20160 states and 36812 transitions. [2024-11-09 19:46:04,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 207.11111111111111) internal successors, (1864), 9 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:04,997 INFO L276 IsEmpty]: Start isEmpty. Operand 20160 states and 36812 transitions. [2024-11-09 19:46:05,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1205 [2024-11-09 19:46:05,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:05,024 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:05,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 19:46:05,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 19:46:05,225 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:05,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:05,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1166150210, now seen corresponding path program 1 times [2024-11-09 19:46:05,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:05,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563337232] [2024-11-09 19:46:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:05,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3019 backedges. 956 proven. 0 refuted. 0 times theorem prover too weak. 2063 trivial. 0 not checked. [2024-11-09 19:46:06,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:06,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563337232] [2024-11-09 19:46:06,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563337232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:06,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:06,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:06,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300052462] [2024-11-09 19:46:06,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:06,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:06,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:06,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:06,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:06,358 INFO L87 Difference]: Start difference. First operand 20160 states and 36812 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:07,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:07,475 INFO L93 Difference]: Finished difference Result 39658 states and 72431 transitions. [2024-11-09 19:46:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:07,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 1204 [2024-11-09 19:46:07,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:07,497 INFO L225 Difference]: With dead ends: 39658 [2024-11-09 19:46:07,497 INFO L226 Difference]: Without dead ends: 19500 [2024-11-09 19:46:07,509 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 [2024-11-09 19:46:07,510 INFO L432 NwaCegarLoop]: 631 mSDtfsCounter, 460 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:07,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 639 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:46:07,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19500 states. [2024-11-09 19:46:07,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19500 to 18510. [2024-11-09 19:46:07,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18510 states, 18509 states have (on average 1.819277108433735) internal successors, (33673), 18509 states have internal predecessors, (33673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18510 states to 18510 states and 33673 transitions. [2024-11-09 19:46:07,773 INFO L78 Accepts]: Start accepts. Automaton has 18510 states and 33673 transitions. Word has length 1204 [2024-11-09 19:46:07,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:07,774 INFO L471 AbstractCegarLoop]: Abstraction has 18510 states and 33673 transitions. [2024-11-09 19:46:07,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:07,774 INFO L276 IsEmpty]: Start isEmpty. Operand 18510 states and 33673 transitions. [2024-11-09 19:46:07,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1488 [2024-11-09 19:46:07,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:07,794 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:07,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 19:46:07,795 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:07,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:07,795 INFO L85 PathProgramCache]: Analyzing trace with hash 862445030, now seen corresponding path program 1 times [2024-11-09 19:46:07,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:07,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140484500] [2024-11-09 19:46:07,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:07,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4405 backedges. 2022 proven. 1630 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2024-11-09 19:46:09,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:09,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140484500] [2024-11-09 19:46:09,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140484500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:46:09,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981977250] [2024-11-09 19:46:09,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:09,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:46:09,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:46:09,445 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:46:09,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 19:46:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:09,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:46:09,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:46:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4405 backedges. 2187 proven. 0 refuted. 0 times theorem prover too weak. 2218 trivial. 0 not checked. [2024-11-09 19:46:10,159 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:46:10,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981977250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:10,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:46:10,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 19:46:10,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330837237] [2024-11-09 19:46:10,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:10,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:10,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:10,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:10,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:10,163 INFO L87 Difference]: Start difference. First operand 18510 states and 33673 transitions. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:11,272 INFO L93 Difference]: Finished difference Result 35698 states and 64966 transitions. [2024-11-09 19:46:11,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:11,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 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 1487 [2024-11-09 19:46:11,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:11,291 INFO L225 Difference]: With dead ends: 35698 [2024-11-09 19:46:11,292 INFO L226 Difference]: Without dead ends: 18180 [2024-11-09 19:46:11,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1493 GetRequests, 1488 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:11,303 INFO L432 NwaCegarLoop]: 673 mSDtfsCounter, 323 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:11,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 681 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:46:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18180 states. [2024-11-09 19:46:11,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18180 to 18180. [2024-11-09 19:46:11,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18180 states, 18179 states have (on average 1.8167665988228174) internal successors, (33027), 18179 states have internal predecessors, (33027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:11,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18180 states to 18180 states and 33027 transitions. [2024-11-09 19:46:11,474 INFO L78 Accepts]: Start accepts. Automaton has 18180 states and 33027 transitions. Word has length 1487 [2024-11-09 19:46:11,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:11,475 INFO L471 AbstractCegarLoop]: Abstraction has 18180 states and 33027 transitions. [2024-11-09 19:46:11,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:11,476 INFO L276 IsEmpty]: Start isEmpty. Operand 18180 states and 33027 transitions. [2024-11-09 19:46:11,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1583 [2024-11-09 19:46:11,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:11,496 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:46:11,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 19:46:11,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 19:46:11,697 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:11,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:11,697 INFO L85 PathProgramCache]: Analyzing trace with hash 643387500, now seen corresponding path program 1 times [2024-11-09 19:46:11,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:11,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17681656] [2024-11-09 19:46:11,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:11,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5126 backedges. 3411 proven. 0 refuted. 0 times theorem prover too weak. 1715 trivial. 0 not checked. [2024-11-09 19:46:13,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:13,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17681656] [2024-11-09 19:46:13,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17681656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:13,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:13,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:46:13,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78486839] [2024-11-09 19:46:13,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:13,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:46:13,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:13,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:46:13,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:46:13,350 INFO L87 Difference]: Start difference. First operand 18180 states and 33027 transitions. Second operand has 4 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)